20199874437

Committed 06 Dec 2025 10:32PM UTC coverage: 27.015% (+0.2%) from 26.849%

Build # 20199874437

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web-flow

Commit Message

feat: Add leftTranslateByVector2 method to Matrix4 (#351)

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/lib/src/vector_math_64/matrix4.dart

// Copyright (c) 2015, Google Inc. Please see the AUTHORS file for details.
// All rights reserved. Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

part of '../../vector_math_64.dart';

/// 4D Matrix.
/// Values are stored in column major order.
class Matrix4 {
  final Float64List _m4storage;

  /// The components of the matrix.
  Float64List get storage => _m4storage;

  /// Solve [A] * [x] = [b].
  static void solve2(Matrix4 A, Vector2 x, Vector2 b) {
    final a11 = A.entry(0, 0);
    final a12 = A.entry(0, 1);
    final a21 = A.entry(1, 0);
    final a22 = A.entry(1, 1);
    final bx = b.x - A._m4storage[8];
    final by = b.y - A._m4storage[9];
    var det = a11 * a22 - a12 * a21;

    if (det != 0.0) {
      det = 1.0 / det;
    }

    x
      ..x = det * (a22 * bx - a12 * by)
      ..y = det * (a11 * by - a21 * bx);
  }

  /// Solve [A] * [x] = [b].
  static void solve3(Matrix4 A, Vector3 x, Vector3 b) {
    final A0x = A.entry(0, 0);
    final A0y = A.entry(1, 0);
    final A0z = A.entry(2, 0);
    final A1x = A.entry(0, 1);
    final A1y = A.entry(1, 1);
    final A1z = A.entry(2, 1);
    final A2x = A.entry(0, 2);
    final A2y = A.entry(1, 2);
    final A2z = A.entry(2, 2);
    final bx = b.x - A._m4storage[12];
    final by = b.y - A._m4storage[13];
    final bz = b.z - A._m4storage[14];
    double rx, ry, rz;
    double det;

    // Column1 cross Column 2
    rx = A1y * A2z - A1z * A2y;
    ry = A1z * A2x - A1x * A2z;
    rz = A1x * A2y - A1y * A2x;

    // A.getColumn(0).dot(x)
    det = A0x * rx + A0y * ry + A0z * rz;
    if (det != 0.0) {
      det = 1.0 / det;
    }

    // b dot [Column1 cross Column 2]
    final x_ = det * (bx * rx + by * ry + bz * rz);

    // Column2 cross b
    rx = -(A2y * bz - A2z * by);
    ry = -(A2z * bx - A2x * bz);
    rz = -(A2x * by - A2y * bx);
    // Column0 dot -[Column2 cross b (Column3)]
    final y_ = det * (A0x * rx + A0y * ry + A0z * rz);

    // b cross Column 1
    rx = -(by * A1z - bz * A1y);
    ry = -(bz * A1x - bx * A1z);
    rz = -(bx * A1y - by * A1x);
    // Column0 dot -[b cross Column 1]
    final z_ = det * (A0x * rx + A0y * ry + A0z * rz);

    x
      ..x = x_
      ..y = y_
      ..z = z_;
  }

  /// Solve [A] * [x] = [b].
  static void solve(Matrix4 A, Vector4 x, Vector4 b) {
    final a00 = A._m4storage[0];
    final a01 = A._m4storage[1];
    final a02 = A._m4storage[2];
    final a03 = A._m4storage[3];
    final a10 = A._m4storage[4];
    final a11 = A._m4storage[5];
    final a12 = A._m4storage[6];
    final a13 = A._m4storage[7];
    final a20 = A._m4storage[8];
    final a21 = A._m4storage[9];
    final a22 = A._m4storage[10];
    final a23 = A._m4storage[11];
    final a30 = A._m4storage[12];
    final a31 = A._m4storage[13];
    final a32 = A._m4storage[14];
    final a33 = A._m4storage[15];
    final b00 = a00 * a11 - a01 * a10;
    final b01 = a00 * a12 - a02 * a10;
    final b02 = a00 * a13 - a03 * a10;
    final b03 = a01 * a12 - a02 * a11;
    final b04 = a01 * a13 - a03 * a11;
    final b05 = a02 * a13 - a03 * a12;
    final b06 = a20 * a31 - a21 * a30;
    final b07 = a20 * a32 - a22 * a30;
    final b08 = a20 * a33 - a23 * a30;
    final b09 = a21 * a32 - a22 * a31;
    final b10 = a21 * a33 - a23 * a31;
    final b11 = a22 * a33 - a23 * a32;

    final bX = b.storage[0];
    final bY = b.storage[1];
    final bZ = b.storage[2];
    final bW = b.storage[3];

    var det =
        b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;

    if (det != 0.0) {
      det = 1.0 / det;
    }

    x
      ..x =
          det *
          ((a11 * b11 - a12 * b10 + a13 * b09) * bX -
              (a10 * b11 - a12 * b08 + a13 * b07) * bY +
              (a10 * b10 - a11 * b08 + a13 * b06) * bZ -
              (a10 * b09 - a11 * b07 + a12 * b06) * bW)
      ..y =
          det *
          -((a01 * b11 - a02 * b10 + a03 * b09) * bX -
              (a00 * b11 - a02 * b08 + a03 * b07) * bY +
              (a00 * b10 - a01 * b08 + a03 * b06) * bZ -
              (a00 * b09 - a01 * b07 + a02 * b06) * bW)
      ..z =
          det *
          ((a31 * b05 - a32 * b04 + a33 * b03) * bX -
              (a30 * b05 - a32 * b02 + a33 * b01) * bY +
              (a30 * b04 - a31 * b02 + a33 * b00) * bZ -
              (a30 * b03 - a31 * b01 + a32 * b00) * bW)
      ..w =
          det *
          -((a21 * b05 - a22 * b04 + a23 * b03) * bX -
              (a20 * b05 - a22 * b02 + a23 * b01) * bY +
              (a20 * b04 - a21 * b02 + a23 * b00) * bZ -
              (a20 * b03 - a21 * b01 + a22 * b00) * bW);
  }

  /// Returns a matrix that is the inverse of [other] if [other] is invertible,
  /// otherwise `null`.
  static Matrix4? tryInvert(Matrix4 other) {
    final r = Matrix4.zero();
    final determinant = r.copyInverse(other);
    if (determinant == 0.0) {
      return null;
    }
    return r;
  }

  /// Return index in storage for [row], [col] value.
  int index(int row, int col) => (col * 4) + row;

  /// Value at [row], [col].
  double entry(int row, int col) {
    assert((row >= 0) && (row < dimension));
    assert((col >= 0) && (col < dimension));

    return _m4storage[index(row, col)];
  }

  /// Set value at [row], [col] to be [v].
  void setEntry(int row, int col, double v) {
    assert((row >= 0) && (row < dimension));
    assert((col >= 0) && (col < dimension));

    _m4storage[index(row, col)] = v;
  }

  /// Constructs a new mat4.
  factory Matrix4(
    double arg0,
    double arg1,
    double arg2,
    double arg3,
    double arg4,
    double arg5,
    double arg6,
    double arg7,
    double arg8,
    double arg9,
    double arg10,
    double arg11,
    double arg12,
    double arg13,
    double arg14,
    double arg15,
  ) =>
      Matrix4.zero()..setValues(
        arg0,
        arg1,
        arg2,
        arg3,
        arg4,
        arg5,
        arg6,
        arg7,
        arg8,
        arg9,
        arg10,
        arg11,
        arg12,
        arg13,
        arg14,
        arg15,
      );

  /// New matrix from [values].
  factory Matrix4.fromList(List<double> values) =>
      Matrix4.zero()..setValues(
        values[0],
        values[1],
        values[2],
        values[3],
        values[4],
        values[5],
        values[6],
        values[7],
        values[8],
        values[9],
        values[10],
        values[11],
        values[12],
        values[13],
        values[14],
        values[15],
      );

  /// Zero matrix.
  Matrix4.zero() : _m4storage = Float64List(16);

  /// Identity matrix.
  factory Matrix4.identity() => Matrix4.zero()..setIdentity();

  /// Copies values from [other].
  factory Matrix4.copy(Matrix4 other) => Matrix4.zero()..setFrom(other);

  /// Constructs a matrix that is the inverse of [other].
  factory Matrix4.inverted(Matrix4 other) {
    final r = Matrix4.zero();
    final determinant = r.copyInverse(other);
    if (determinant == 0.0) {
      throw ArgumentError.value(other, 'other', 'Matrix cannot be inverted');
    }
    return r;
  }

  /// Constructs a new mat4 from columns.
  factory Matrix4.columns(
    Vector4 arg0,
    Vector4 arg1,
    Vector4 arg2,
    Vector4 arg3,
  ) => Matrix4.zero()..setColumns(arg0, arg1, arg2, arg3);

  /// Outer product of [u] and [v].
  factory Matrix4.outer(Vector4 u, Vector4 v) => Matrix4.zero()..setOuter(u, v);

  /// Rotation of [radians] around X.
  factory Matrix4.rotationX(double radians) =>
      Matrix4.zero()
        .._m4storage[15] = 1.0
        ..setRotationX(radians);

  /// Rotation of [radians] around Y.
  factory Matrix4.rotationY(double radians) =>
      Matrix4.zero()
        .._m4storage[15] = 1.0
        ..setRotationY(radians);

  /// Rotation of [radians] around Z.
  factory Matrix4.rotationZ(double radians) =>
      Matrix4.zero()
        .._m4storage[15] = 1.0
        ..setRotationZ(radians);

  /// Translation matrix.
  factory Matrix4.translation(Vector3 translation) =>
      Matrix4.zero()
        ..setIdentity()
        ..setTranslation(translation);

  /// Translation matrix.
  factory Matrix4.translationValues(double x, double y, double z) =>
      Matrix4.zero()
        ..setIdentity()
        ..setTranslationRaw(x, y, z);

  /// Scale matrix.
  factory Matrix4.diagonal3(Vector3 scale) {
    final m = Matrix4.zero();
    final mStorage = m._m4storage;
    final scaleStorage = scale._v3storage;
    mStorage[15] = 1.0;
    mStorage[10] = scaleStorage[2];
    mStorage[5] = scaleStorage[1];
    mStorage[0] = scaleStorage[0];
    return m;
  }

  /// Scale matrix.
  factory Matrix4.diagonal3Values(double x, double y, double z) =>
      Matrix4.zero()
        .._m4storage[15] = 1.0
        .._m4storage[10] = z
        .._m4storage[5] = y
        .._m4storage[0] = x;

  /// Skew matrix around X axis
  factory Matrix4.skewX(double alpha) {
    final m = Matrix4.identity();
    m._m4storage[4] = math.tan(alpha);
    return m;
  }

  /// Skew matrix around Y axis.
  factory Matrix4.skewY(double beta) {
    final m = Matrix4.identity();
    m._m4storage[1] = math.tan(beta);
    return m;
  }

  /// Skew matrix around X axis (alpha) and Y axis (beta).
  factory Matrix4.skew(double alpha, double beta) {
    final m = Matrix4.identity();
    m._m4storage[1] = math.tan(beta);
    m._m4storage[4] = math.tan(alpha);
    return m;
  }

  /// Constructs Matrix4 with given [Float64List] as [storage].
  Matrix4.fromFloat64List(this._m4storage);

  /// Constructs Matrix4 with a [storage] that views given [buffer] starting at
  /// [offset]. [offset] has to be multiple of [Float64List.bytesPerElement].
  Matrix4.fromBuffer(ByteBuffer buffer, int offset)
    : _m4storage = Float64List.view(buffer, offset, 16);

  /// Constructs Matrix4 from [translation], [rotation] and [scale].
  factory Matrix4.compose(
    Vector3 translation,
    Quaternion rotation,
    Vector3 scale,
  ) =>
      Matrix4.zero()
        ..setFromTranslationRotationScale(translation, rotation, scale);

  /// Sets the diagonal to [arg].
  void splatDiagonal(double arg) {
    _m4storage[0] = arg;
    _m4storage[5] = arg;
    _m4storage[10] = arg;
    _m4storage[15] = arg;
  }

  /// Sets the matrix with specified values.
  void setValues(
    double arg0,
    double arg1,
    double arg2,
    double arg3,
    double arg4,
    double arg5,
    double arg6,
    double arg7,
    double arg8,
    double arg9,
    double arg10,
    double arg11,
    double arg12,
    double arg13,
    double arg14,
    double arg15,
  ) {
    _m4storage[15] = arg15;
    _m4storage[14] = arg14;
    _m4storage[13] = arg13;
    _m4storage[12] = arg12;
    _m4storage[11] = arg11;
    _m4storage[10] = arg10;
    _m4storage[9] = arg9;
    _m4storage[8] = arg8;
    _m4storage[7] = arg7;
    _m4storage[6] = arg6;
    _m4storage[5] = arg5;
    _m4storage[4] = arg4;
    _m4storage[3] = arg3;
    _m4storage[2] = arg2;
    _m4storage[1] = arg1;
    _m4storage[0] = arg0;
  }

  /// Sets the entire matrix to the column values.
  void setColumns(Vector4 arg0, Vector4 arg1, Vector4 arg2, Vector4 arg3) {
    final arg0Storage = arg0._v4storage;
    final arg1Storage = arg1._v4storage;
    final arg2Storage = arg2._v4storage;
    final arg3Storage = arg3._v4storage;
    _m4storage[0] = arg0Storage[0];
    _m4storage[1] = arg0Storage[1];
    _m4storage[2] = arg0Storage[2];
    _m4storage[3] = arg0Storage[3];
    _m4storage[4] = arg1Storage[0];
    _m4storage[5] = arg1Storage[1];
    _m4storage[6] = arg1Storage[2];
    _m4storage[7] = arg1Storage[3];
    _m4storage[8] = arg2Storage[0];
    _m4storage[9] = arg2Storage[1];
    _m4storage[10] = arg2Storage[2];
    _m4storage[11] = arg2Storage[3];
    _m4storage[12] = arg3Storage[0];
    _m4storage[13] = arg3Storage[1];
    _m4storage[14] = arg3Storage[2];
    _m4storage[15] = arg3Storage[3];
  }

  /// Sets the entire matrix to the matrix in [arg].
  void setFrom(Matrix4 arg) {
    final argStorage = arg._m4storage;
    _m4storage[15] = argStorage[15];
    _m4storage[14] = argStorage[14];
    _m4storage[13] = argStorage[13];
    _m4storage[12] = argStorage[12];
    _m4storage[11] = argStorage[11];
    _m4storage[10] = argStorage[10];
    _m4storage[9] = argStorage[9];
    _m4storage[8] = argStorage[8];
    _m4storage[7] = argStorage[7];
    _m4storage[6] = argStorage[6];
    _m4storage[5] = argStorage[5];
    _m4storage[4] = argStorage[4];
    _m4storage[3] = argStorage[3];
    _m4storage[2] = argStorage[2];
    _m4storage[1] = argStorage[1];
    _m4storage[0] = argStorage[0];
  }

  /// Sets the matrix from translation [arg0] and rotation [arg1].
  void setFromTranslationRotation(Vector3 arg0, Quaternion arg1) {
    final arg1Storage = arg1._qStorage;
    final x = arg1Storage[0];
    final y = arg1Storage[1];
    final z = arg1Storage[2];
    final w = arg1Storage[3];
    final x2 = x + x;
    final y2 = y + y;
    final z2 = z + z;
    final xx = x * x2;
    final xy = x * y2;
    final xz = x * z2;
    final yy = y * y2;
    final yz = y * z2;
    final zz = z * z2;
    final wx = w * x2;
    final wy = w * y2;
    final wz = w * z2;

    final arg0Storage = arg0._v3storage;
    _m4storage[0] = 1.0 - (yy + zz);
    _m4storage[1] = xy + wz;
    _m4storage[2] = xz - wy;
    _m4storage[3] = 0.0;
    _m4storage[4] = xy - wz;
    _m4storage[5] = 1.0 - (xx + zz);
    _m4storage[6] = yz + wx;
    _m4storage[7] = 0.0;
    _m4storage[8] = xz + wy;
    _m4storage[9] = yz - wx;
    _m4storage[10] = 1.0 - (xx + yy);
    _m4storage[11] = 0.0;
    _m4storage[12] = arg0Storage[0];
    _m4storage[13] = arg0Storage[1];
    _m4storage[14] = arg0Storage[2];
    _m4storage[15] = 1.0;
  }

  /// Sets the matrix from [translation], [rotation] and [scale].
  void setFromTranslationRotationScale(
    Vector3 translation,
    Quaternion rotation,
    Vector3 scale,
  ) {
    setFromTranslationRotation(translation, rotation);
    scaleByVector3(scale);
  }

  /// Sets the upper 2x2 of the matrix to be [arg].
  void setUpper2x2(Matrix2 arg) {
    final argStorage = arg._m2storage;
    _m4storage[0] = argStorage[0];
    _m4storage[1] = argStorage[1];
    _m4storage[4] = argStorage[2];
    _m4storage[5] = argStorage[3];
  }

  /// Sets the diagonal of the matrix to be [arg].
  void setDiagonal(Vector4 arg) {
    final argStorage = arg._v4storage;
    _m4storage[0] = argStorage[0];
    _m4storage[5] = argStorage[1];
    _m4storage[10] = argStorage[2];
    _m4storage[15] = argStorage[3];
  }

  void setOuter(Vector4 u, Vector4 v) {
    final uStorage = u._v4storage;
    final vStorage = v._v4storage;
    _m4storage[0] = uStorage[0] * vStorage[0];
    _m4storage[1] = uStorage[0] * vStorage[1];
    _m4storage[2] = uStorage[0] * vStorage[2];
    _m4storage[3] = uStorage[0] * vStorage[3];
    _m4storage[4] = uStorage[1] * vStorage[0];
    _m4storage[5] = uStorage[1] * vStorage[1];
    _m4storage[6] = uStorage[1] * vStorage[2];
    _m4storage[7] = uStorage[1] * vStorage[3];
    _m4storage[8] = uStorage[2] * vStorage[0];
    _m4storage[9] = uStorage[2] * vStorage[1];
    _m4storage[10] = uStorage[2] * vStorage[2];
    _m4storage[11] = uStorage[2] * vStorage[3];
    _m4storage[12] = uStorage[3] * vStorage[0];
    _m4storage[13] = uStorage[3] * vStorage[1];
    _m4storage[14] = uStorage[3] * vStorage[2];
    _m4storage[15] = uStorage[3] * vStorage[3];
  }

  /// Returns a printable string
  @override
  String toString() =>
      '[0] ${getRow(0)}\n[1] ${getRow(1)}\n'
      '[2] ${getRow(2)}\n[3] ${getRow(3)}\n';

  /// Dimension of the matrix.
  int get dimension => 4;

  /// Access the element of the matrix at the index [i].
  double operator [](int i) => _m4storage[i];

  /// Set the element of the matrix at the index [i].
  void operator []=(int i, double v) {
    _m4storage[i] = v;
  }

  /// Check if two matrices are the same.
  @override
  bool operator ==(Object other) =>
      (other is Matrix4) &&
      (_m4storage[0] == other._m4storage[0]) &&
      (_m4storage[1] == other._m4storage[1]) &&
      (_m4storage[2] == other._m4storage[2]) &&
      (_m4storage[3] == other._m4storage[3]) &&
      (_m4storage[4] == other._m4storage[4]) &&
      (_m4storage[5] == other._m4storage[5]) &&
      (_m4storage[6] == other._m4storage[6]) &&
      (_m4storage[7] == other._m4storage[7]) &&
      (_m4storage[8] == other._m4storage[8]) &&
      (_m4storage[9] == other._m4storage[9]) &&
      (_m4storage[10] == other._m4storage[10]) &&
      (_m4storage[11] == other._m4storage[11]) &&
      (_m4storage[12] == other._m4storage[12]) &&
      (_m4storage[13] == other._m4storage[13]) &&
      (_m4storage[14] == other._m4storage[14]) &&
      (_m4storage[15] == other._m4storage[15]);

  @override
  int get hashCode => Object.hashAll(_m4storage);

  /// Returns row 0
  Vector4 get row0 => getRow(0);

  /// Returns row 1
  Vector4 get row1 => getRow(1);

  /// Returns row 2
  Vector4 get row2 => getRow(2);

  /// Returns row 3
  Vector4 get row3 => getRow(3);

  /// Sets row 0 to [arg]
  set row0(Vector4 arg) => setRow(0, arg);

  /// Sets row 1 to [arg]
  set row1(Vector4 arg) => setRow(1, arg);

  /// Sets row 2 to [arg]
  set row2(Vector4 arg) => setRow(2, arg);

  /// Sets row 3 to [arg]
  set row3(Vector4 arg) => setRow(3, arg);

  /// Assigns the [row] of the matrix [arg]
  void setRow(int row, Vector4 arg) {
    final argStorage = arg._v4storage;
    _m4storage[index(row, 0)] = argStorage[0];
    _m4storage[index(row, 1)] = argStorage[1];
    _m4storage[index(row, 2)] = argStorage[2];
    _m4storage[index(row, 3)] = argStorage[3];
  }

  /// Gets the [row] of the matrix
  Vector4 getRow(int row) {
    final r = Vector4.zero();
    final rStorage = r._v4storage;
    rStorage[0] = _m4storage[index(row, 0)];
    rStorage[1] = _m4storage[index(row, 1)];
    rStorage[2] = _m4storage[index(row, 2)];
    rStorage[3] = _m4storage[index(row, 3)];
    return r;
  }

  /// Assigns the [column] of the matrix [arg]
  void setColumn(int column, Vector4 arg) {
    final entry = column * 4;
    final argStorage = arg._v4storage;
    _m4storage[entry + 3] = argStorage[3];
    _m4storage[entry + 2] = argStorage[2];
    _m4storage[entry + 1] = argStorage[1];
    _m4storage[entry + 0] = argStorage[0];
  }

  /// Gets the [column] of the matrix
  Vector4 getColumn(int column) {
    final r = Vector4.zero();
    final rStorage = r._v4storage;
    final entry = column * 4;
    rStorage[3] = _m4storage[entry + 3];
    rStorage[2] = _m4storage[entry + 2];
    rStorage[1] = _m4storage[entry + 1];
    rStorage[0] = _m4storage[entry + 0];
    return r;
  }

  /// Clone matrix.
  Matrix4 clone() => Matrix4.copy(this);

  /// Copy into [arg].
  Matrix4 copyInto(Matrix4 arg) {
    final argStorage = arg._m4storage;
    argStorage[0] = _m4storage[0];
    argStorage[1] = _m4storage[1];
    argStorage[2] = _m4storage[2];
    argStorage[3] = _m4storage[3];
    argStorage[4] = _m4storage[4];
    argStorage[5] = _m4storage[5];
    argStorage[6] = _m4storage[6];
    argStorage[7] = _m4storage[7];
    argStorage[8] = _m4storage[8];
    argStorage[9] = _m4storage[9];
    argStorage[10] = _m4storage[10];
    argStorage[11] = _m4storage[11];
    argStorage[12] = _m4storage[12];
    argStorage[13] = _m4storage[13];
    argStorage[14] = _m4storage[14];
    argStorage[15] = _m4storage[15];
    return arg;
  }

  /// Returns new matrix -this
  Matrix4 operator -() => clone()..negate();

  /// Returns a new vector or matrix by multiplying this with [arg].
  ///
  /// [arg] should be a [double] (to scale), [Vector4] (to transform), [Vector3]
  /// (to transform), or [Matrix4] (to multiply).
  ///
  /// If you know the argument type in a call site, prefer [scaledByDouble],
  /// [transformed], [transformed3], or [multiplied] for performance.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  dynamic operator *(dynamic arg) {
    final Object result;
    if (arg is double) {
      result = scaledByDouble(arg, arg, arg, 1.0);
    } else if (arg is Vector4) {
      result = transformed(arg);
    } else if (arg is Vector3) {
      result = transformed3(arg);
    } else if (arg is Matrix4) {
      result = multiplied(arg);
    } else {
      throw ArgumentError(arg);
    }
    return result;
  }

  /// Returns new matrix after component wise this + [arg]
  Matrix4 operator +(Matrix4 arg) => clone()..add(arg);

  /// Returns new matrix after component wise this - [arg]
  Matrix4 operator -(Matrix4 arg) => clone()..sub(arg);

  /// Translate this matrix by a [Vector3], [Vector4], or x,y,z as [double]s.
  ///
  /// If you know the argument types in a call site, prefer [translateByDouble],
  /// [translateByVector3], or [translateByVector4] for performance.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  @Deprecated(
    'Use translateByVector3, translateByVector4, '
    'or translateByDouble instead',
  )
  void translate(dynamic x, [double y = 0.0, double z = 0.0]) {
    if (x is Vector3) {
      translateByVector3(x);
    } else if (x is Vector4) {
      translateByVector4(x);
    } else if (x is double) {
      translateByDouble(x, y, z, 1.0);
    } else {
      throw UnimplementedError();
    }
  }

  /// Translate this matrix by x, y, z, w.
  void translateByDouble(double tx, double ty, double tz, double tw) {
    final t1 =
        _m4storage[0] * tx +
        _m4storage[4] * ty +
        _m4storage[8] * tz +
        _m4storage[12] * tw;
    _m4storage[12] = t1;

    final t2 =
        _m4storage[1] * tx +
        _m4storage[5] * ty +
        _m4storage[9] * tz +
        _m4storage[13] * tw;
    _m4storage[13] = t2;

    final t3 =
        _m4storage[2] * tx +
        _m4storage[6] * ty +
        _m4storage[10] * tz +
        _m4storage[14] * tw;
    _m4storage[14] = t3;

    final t4 =
        _m4storage[3] * tx +
        _m4storage[7] * ty +
        _m4storage[11] * tz +
        _m4storage[15] * tw;
    _m4storage[15] = t4;
  }

  /// Translate this matrix by a [Vector2].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void translateByVector2(Vector2 v2) =>
      translateByDouble(v2.x, v2.y, 0.0, 1.0);

  /// Translate this matrix by a [Vector3].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void translateByVector3(Vector3 v3) =>
      translateByDouble(v3.x, v3.y, v3.z, 1.0);

  /// Translate this matrix by a [Vector4].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void translateByVector4(Vector4 v4) =>
      translateByDouble(v4.x, v4.y, v4.z, v4.w);

  /// Multiply this by a translation from the left.
  ///
  /// The translation can be specified with a [Vector3], [Vector4], or x, y, z
  /// as [double]s.
  ///
  /// If you know the argument types in a call site, prefer
  /// [leftTranslateByDouble], [leftTranslateByVector3], or
  /// [leftTranslateByVector4] for performance.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  @Deprecated(
    'Use leftTranslateByVector3, leftTranslateByVector4, '
    'or leftTranslateByDouble instead',
  )
  void leftTranslate(dynamic x, [double y = 0.0, double z = 0.0]) {
    if (x is Vector3) {
      leftTranslateByVector3(x);
    } else if (x is Vector4) {
      leftTranslateByVector4(x);
    } else if (x is double) {
      leftTranslateByDouble(x, y, z, 1.0);
    } else {
      throw UnimplementedError();
    }
  }

  /// Multiply this by a translation from the left.
  void leftTranslateByDouble(double tx, double ty, double tz, double tw) {
    // Column 1
    final r1 = _m4storage[3];
    _m4storage[0] += tx * r1;
    _m4storage[1] += ty * r1;
    _m4storage[2] += tz * r1;
    _m4storage[3] = tw * r1;

    // Column 2
    final r2 = _m4storage[7];
    _m4storage[4] += tx * r2;
    _m4storage[5] += ty * r2;
    _m4storage[6] += tz * r2;
    _m4storage[7] = tw * r2;

    // Column 3
    final r3 = _m4storage[11];
    _m4storage[8] += tx * r3;
    _m4storage[9] += ty * r3;
    _m4storage[10] += tz * r3;
    _m4storage[11] = tw * r3;

    // Column 4
    final r4 = _m4storage[15];
    _m4storage[12] += tx * r4;
    _m4storage[13] += ty * r4;
    _m4storage[14] += tz * r4;
    _m4storage[15] = tw * r4;
  }

  /// Multiply this by a translation from the left.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void leftTranslateByVector2(Vector2 v2) =>
      leftTranslateByDouble(v2.x, v2.y, 0.0, 1.0);

  /// Multiply this by a translation from the left.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void leftTranslateByVector3(Vector3 v3) =>
      leftTranslateByDouble(v3.x, v3.y, v3.z, 1.0);

  /// Multiply this by a translation from the left.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void leftTranslateByVector4(Vector4 v4) =>
      leftTranslateByDouble(v4.x, v4.y, v4.z, v4.w);

  /// Rotate this [angle] radians around [axis]
  void rotate(Vector3 axis, double angle) {
    final len = axis.length;
    final axisStorage = axis._v3storage;
    final x = axisStorage[0] / len;
    final y = axisStorage[1] / len;
    final z = axisStorage[2] / len;
    final c = math.cos(angle);
    final s = math.sin(angle);
    final C = 1.0 - c;
    final m11 = x * x * C + c;
    final m12 = x * y * C - z * s;
    final m13 = x * z * C + y * s;
    final m21 = y * x * C + z * s;
    final m22 = y * y * C + c;
    final m23 = y * z * C - x * s;
    final m31 = z * x * C - y * s;
    final m32 = z * y * C + x * s;
    final m33 = z * z * C + c;
    final t1 = _m4storage[0] * m11 + _m4storage[4] * m21 + _m4storage[8] * m31;
    final t2 = _m4storage[1] * m11 + _m4storage[5] * m21 + _m4storage[9] * m31;
    final t3 = _m4storage[2] * m11 + _m4storage[6] * m21 + _m4storage[10] * m31;
    final t4 = _m4storage[3] * m11 + _m4storage[7] * m21 + _m4storage[11] * m31;
    final t5 = _m4storage[0] * m12 + _m4storage[4] * m22 + _m4storage[8] * m32;
    final t6 = _m4storage[1] * m12 + _m4storage[5] * m22 + _m4storage[9] * m32;
    final t7 = _m4storage[2] * m12 + _m4storage[6] * m22 + _m4storage[10] * m32;
    final t8 = _m4storage[3] * m12 + _m4storage[7] * m22 + _m4storage[11] * m32;
    final t9 = _m4storage[0] * m13 + _m4storage[4] * m23 + _m4storage[8] * m33;
    final t10 = _m4storage[1] * m13 + _m4storage[5] * m23 + _m4storage[9] * m33;
    final t11 =
        _m4storage[2] * m13 + _m4storage[6] * m23 + _m4storage[10] * m33;
    final t12 =
        _m4storage[3] * m13 + _m4storage[7] * m23 + _m4storage[11] * m33;
    _m4storage[0] = t1;
    _m4storage[1] = t2;
    _m4storage[2] = t3;
    _m4storage[3] = t4;
    _m4storage[4] = t5;
    _m4storage[5] = t6;
    _m4storage[6] = t7;
    _m4storage[7] = t8;
    _m4storage[8] = t9;
    _m4storage[9] = t10;
    _m4storage[10] = t11;
    _m4storage[11] = t12;
  }

  /// Rotate this [angle] radians around X
  void rotateX(double angle) {
    final cosAngle = math.cos(angle);
    final sinAngle = math.sin(angle);
    final t1 = _m4storage[4] * cosAngle + _m4storage[8] * sinAngle;
    final t2 = _m4storage[5] * cosAngle + _m4storage[9] * sinAngle;
    final t3 = _m4storage[6] * cosAngle + _m4storage[10] * sinAngle;
    final t4 = _m4storage[7] * cosAngle + _m4storage[11] * sinAngle;
    final t5 = _m4storage[4] * -sinAngle + _m4storage[8] * cosAngle;
    final t6 = _m4storage[5] * -sinAngle + _m4storage[9] * cosAngle;
    final t7 = _m4storage[6] * -sinAngle + _m4storage[10] * cosAngle;
    final t8 = _m4storage[7] * -sinAngle + _m4storage[11] * cosAngle;
    _m4storage[4] = t1;
    _m4storage[5] = t2;
    _m4storage[6] = t3;
    _m4storage[7] = t4;
    _m4storage[8] = t5;
    _m4storage[9] = t6;
    _m4storage[10] = t7;
    _m4storage[11] = t8;
  }

  /// Rotate this matrix [angle] radians around Y
  void rotateY(double angle) {
    final cosAngle = math.cos(angle);
    final sinAngle = math.sin(angle);
    final t1 = _m4storage[0] * cosAngle + _m4storage[8] * -sinAngle;
    final t2 = _m4storage[1] * cosAngle + _m4storage[9] * -sinAngle;
    final t3 = _m4storage[2] * cosAngle + _m4storage[10] * -sinAngle;
    final t4 = _m4storage[3] * cosAngle + _m4storage[11] * -sinAngle;
    final t5 = _m4storage[0] * sinAngle + _m4storage[8] * cosAngle;
    final t6 = _m4storage[1] * sinAngle + _m4storage[9] * cosAngle;
    final t7 = _m4storage[2] * sinAngle + _m4storage[10] * cosAngle;
    final t8 = _m4storage[3] * sinAngle + _m4storage[11] * cosAngle;
    _m4storage[0] = t1;
    _m4storage[1] = t2;
    _m4storage[2] = t3;
    _m4storage[3] = t4;
    _m4storage[8] = t5;
    _m4storage[9] = t6;
    _m4storage[10] = t7;
    _m4storage[11] = t8;
  }

  /// Rotate this matrix [angle] radians around Z
  void rotateZ(double angle) {
    final cosAngle = math.cos(angle);
    final sinAngle = math.sin(angle);
    final t1 = _m4storage[0] * cosAngle + _m4storage[4] * sinAngle;
    final t2 = _m4storage[1] * cosAngle + _m4storage[5] * sinAngle;
    final t3 = _m4storage[2] * cosAngle + _m4storage[6] * sinAngle;
    final t4 = _m4storage[3] * cosAngle + _m4storage[7] * sinAngle;
    final t5 = _m4storage[0] * -sinAngle + _m4storage[4] * cosAngle;
    final t6 = _m4storage[1] * -sinAngle + _m4storage[5] * cosAngle;
    final t7 = _m4storage[2] * -sinAngle + _m4storage[6] * cosAngle;
    final t8 = _m4storage[3] * -sinAngle + _m4storage[7] * cosAngle;
    _m4storage[0] = t1;
    _m4storage[1] = t2;
    _m4storage[2] = t3;
    _m4storage[3] = t4;
    _m4storage[4] = t5;
    _m4storage[5] = t6;
    _m4storage[6] = t7;
    _m4storage[7] = t8;
  }

  /// Scale this matrix by a [Vector3], [Vector4], or x,y,z as [double]s.
  ///
  /// If you know the argument types in a call site, prefer [scaleByDouble],
  /// [scaleByVector3], or [scaleByVector4] for performance.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  @Deprecated('Use scaleByVector3, scaleByVector4, or scaleByDouble instead')
  void scale(dynamic x, [double? y, double? z]) {
    if (x is Vector3) {
      scaleByVector3(x);
    } else if (x is Vector4) {
      scaleByVector4(x);
    } else if (x is double) {
      scaleByDouble(x, y ?? x, z ?? x, 1.0);
    } else {
      throw UnimplementedError();
    }
  }

  /// Scale this matrix.
  void scaleByDouble(double sx, double sy, double sz, double sw) {
    _m4storage[0] *= sx;
    _m4storage[1] *= sx;
    _m4storage[2] *= sx;
    _m4storage[3] *= sx;
    _m4storage[4] *= sy;
    _m4storage[5] *= sy;
    _m4storage[6] *= sy;
    _m4storage[7] *= sy;
    _m4storage[8] *= sz;
    _m4storage[9] *= sz;
    _m4storage[10] *= sz;
    _m4storage[11] *= sz;
    _m4storage[12] *= sw;
    _m4storage[13] *= sw;
    _m4storage[14] *= sw;
    _m4storage[15] *= sw;
  }

  /// Scale this matrix.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void scaleByVector3(Vector3 v3) => scaleByDouble(v3.x, v3.y, v3.z, 1.0);

  /// Scale this matrix.
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  void scaleByVector4(Vector4 v4) => scaleByDouble(v4.x, v4.y, v4.z, v4.w);

  /// Create a copy of this scaled by a [Vector3], [Vector4] or [x],[y], and
  /// [z].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  @Deprecated('Use scaledByVector3, scaledByVector4, or scaledByDouble instead')
  Matrix4 scaled(dynamic x, [double? y, double? z]) => clone()..scale(x, y, z);

  /// Create a copy of this scaled by [x], [y], [z], and [t].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  Matrix4 scaledByDouble(double x, double y, double z, double t) =>
      clone()..scaleByDouble(x, y, z, t);

  /// Create a copy of this scaled by a [Vector3].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  Matrix4 scaledByVector3(Vector3 v3) => clone()..scaleByVector3(v3);

  /// Create a copy of this scaled by a [Vector4].
  @pragma('wasm:prefer-inline')
  @pragma('vm:prefer-inline')
  @pragma('dart2js:prefer-inline')
  Matrix4 scaledByVector4(Vector4 v4) => clone()..scaleByVector4(v4);

  /// Zeros this.
  void setZero() {
    _m4storage[0] = 0.0;
    _m4storage[1] = 0.0;
    _m4storage[2] = 0.0;
    _m4storage[3] = 0.0;
    _m4storage[4] = 0.0;
    _m4storage[5] = 0.0;
    _m4storage[6] = 0.0;
    _m4storage[7] = 0.0;
    _m4storage[8] = 0.0;
    _m4storage[9] = 0.0;
    _m4storage[10] = 0.0;
    _m4storage[11] = 0.0;
    _m4storage[12] = 0.0;
    _m4storage[13] = 0.0;
    _m4storage[14] = 0.0;
    _m4storage[15] = 0.0;
  }

  /// Makes this into the identity matrix.
  void setIdentity() {
    _m4storage[0] = 1.0;
    _m4storage[1] = 0.0;
    _m4storage[2] = 0.0;
    _m4storage[3] = 0.0;
    _m4storage[4] = 0.0;
    _m4storage[5] = 1.0;
    _m4storage[6] = 0.0;
    _m4storage[7] = 0.0;
    _m4storage[8] = 0.0;
    _m4storage[9] = 0.0;
    _m4storage[10] = 1.0;
    _m4storage[11] = 0.0;
    _m4storage[12] = 0.0;
    _m4storage[13] = 0.0;
    _m4storage[14] = 0.0;
    _m4storage[15] = 1.0;
  }

  /// Returns the tranpose of this.
  Matrix4 transposed() => clone()..transpose();

  void transpose() {
    double temp;
    temp = _m4storage[4];
    _m4storage[4] = _m4storage[1];
    _m4storage[1] = temp;
    temp = _m4storage[8];
    _m4storage[8] = _m4storage[2];
    _m4storage[2] = temp;
    temp = _m4storage[12];
    _m4storage[12] = _m4storage[3];
    _m4storage[3] = temp;
    temp = _m4storage[9];
    _m4storage[9] = _m4storage[6];
    _m4storage[6] = temp;
    temp = _m4storage[13];
    _m4storage[13] = _m4storage[7];
    _m4storage[7] = temp;
    temp = _m4storage[14];
    _m4storage[14] = _m4storage[11];
    _m4storage[11] = temp;
  }

  /// Returns the component wise absolute value of this.
  Matrix4 absolute() {
    final r = Matrix4.zero();
    final rStorage = r._m4storage;
    rStorage[0] = _m4storage[0].abs();
    rStorage[1] = _m4storage[1].abs();
    rStorage[2] = _m4storage[2].abs();
    rStorage[3] = _m4storage[3].abs();
    rStorage[4] = _m4storage[4].abs();
    rStorage[5] = _m4storage[5].abs();
    rStorage[6] = _m4storage[6].abs();
    rStorage[7] = _m4storage[7].abs();
    rStorage[8] = _m4storage[8].abs();
    rStorage[9] = _m4storage[9].abs();
    rStorage[10] = _m4storage[10].abs();
    rStorage[11] = _m4storage[11].abs();
    rStorage[12] = _m4storage[12].abs();
    rStorage[13] = _m4storage[13].abs();
    rStorage[14] = _m4storage[14].abs();
    rStorage[15] = _m4storage[15].abs();
    return r;
  }

  /// Returns the determinant of this matrix.
  double determinant() {
    final det2_01_01 =
        _m4storage[0] * _m4storage[5] - _m4storage[1] * _m4storage[4];
    final det2_01_02 =
        _m4storage[0] * _m4storage[6] - _m4storage[2] * _m4storage[4];
    final det2_01_03 =
        _m4storage[0] * _m4storage[7] - _m4storage[3] * _m4storage[4];
    final det2_01_12 =
        _m4storage[1] * _m4storage[6] - _m4storage[2] * _m4storage[5];
    final det2_01_13 =
        _m4storage[1] * _m4storage[7] - _m4storage[3] * _m4storage[5];
    final det2_01_23 =
        _m4storage[2] * _m4storage[7] - _m4storage[3] * _m4storage[6];
    final det3_201_012 =
        _m4storage[8] * det2_01_12 -
        _m4storage[9] * det2_01_02 +
        _m4storage[10] * det2_01_01;
    final det3_201_013 =
        _m4storage[8] * det2_01_13 -
        _m4storage[9] * det2_01_03 +
        _m4storage[11] * det2_01_01;
    final det3_201_023 =
        _m4storage[8] * det2_01_23 -
        _m4storage[10] * det2_01_03 +
        _m4storage[11] * det2_01_02;
    final det3_201_123 =
        _m4storage[9] * det2_01_23 -
        _m4storage[10] * det2_01_13 +
        _m4storage[11] * det2_01_12;
    return -det3_201_123 * _m4storage[12] +
        det3_201_023 * _m4storage[13] -
        det3_201_013 * _m4storage[14] +
        det3_201_012 * _m4storage[15];
  }

  /// Returns the dot product of row [i] and [v].
  double dotRow(int i, Vector4 v) {
    final vStorage = v._v4storage;
    return _m4storage[i] * vStorage[0] +
        _m4storage[4 + i] * vStorage[1] +
        _m4storage[8 + i] * vStorage[2] +
        _m4storage[12 + i] * vStorage[3];
  }

  /// Returns the dot product of column [j] and [v].
  double dotColumn(int j, Vector4 v) {
    final vStorage = v._v4storage;
    return _m4storage[j * 4] * vStorage[0] +
        _m4storage[j * 4 + 1] * vStorage[1] +
        _m4storage[j * 4 + 2] * vStorage[2] +
        _m4storage[j * 4 + 3] * vStorage[3];
  }

  /// Returns the trace of the matrix. The trace of a matrix is the sum of the
  /// diagonal entries.
  double trace() {
    var t = 0.0;
    t += _m4storage[0];
    t += _m4storage[5];
    t += _m4storage[10];
    t += _m4storage[15];
    return t;
  }

  /// Returns infinity norm of the matrix. Used for numerical analysis.
  double infinityNorm() {
    var norm = 0.0;
    {
      var row_norm = 0.0;
      row_norm += _m4storage[0].abs();
      row_norm += _m4storage[1].abs();
      row_norm += _m4storage[2].abs();
      row_norm += _m4storage[3].abs();
      norm = row_norm > norm ? row_norm : norm;
    }
    {
      var row_norm = 0.0;
      row_norm += _m4storage[4].abs();
      row_norm += _m4storage[5].abs();
      row_norm += _m4storage[6].abs();
      row_norm += _m4storage[7].abs();
      norm = row_norm > norm ? row_norm : norm;
    }
    {
      var row_norm = 0.0;
      row_norm += _m4storage[8].abs();
      row_norm += _m4storage[9].abs();
      row_norm += _m4storage[10].abs();
      row_norm += _m4storage[11].abs();
      norm = row_norm > norm ? row_norm : norm;
    }
    {
      var row_norm = 0.0;
      row_norm += _m4storage[12].abs();
      row_norm += _m4storage[13].abs();
      row_norm += _m4storage[14].abs();
      row_norm += _m4storage[15].abs();
      norm = row_norm > norm ? row_norm : norm;
    }
    return norm;
  }

  /// Returns relative error between this and [correct]
  double relativeError(Matrix4 correct) {
    final diff = correct - this;
    final correct_norm = correct.infinityNorm();
    final diff_norm = diff.infinityNorm();
    return diff_norm / correct_norm;
  }

  /// Returns absolute error between this and [correct]
  double absoluteError(Matrix4 correct) {
    final this_norm = infinityNorm();
    final correct_norm = correct.infinityNorm();
    final diff_norm = (this_norm - correct_norm).abs();
    return diff_norm;
  }

  /// Returns the translation vector from this homogeneous transformation
  /// matrix.
  Vector3 getTranslation() {
    final z = _m4storage[14];
    final y = _m4storage[13];
    final x = _m4storage[12];
    return Vector3(x, y, z);
  }

  /// Sets the translation vector in this homogeneous transformation matrix.
  void setTranslation(Vector3 t) {
    final tStorage = t._v3storage;
    final z = tStorage[2];
    final y = tStorage[1];
    final x = tStorage[0];
    _m4storage[14] = z;
    _m4storage[13] = y;
    _m4storage[12] = x;
  }

  /// Sets the translation vector in this homogeneous transformation matrix.
  void setTranslationRaw(double x, double y, double z) {
    _m4storage[14] = z;
    _m4storage[13] = y;
    _m4storage[12] = x;
  }

  /// Returns the rotation matrix from this homogeneous transformation matrix.
  Matrix3 getRotation() {
    final r = Matrix3.zero();
    copyRotation(r);
    return r;
  }

  /// Copies the rotation matrix from this homogeneous transformation matrix
  /// into [rotation].
  void copyRotation(Matrix3 rotation) {
    final rStorage = rotation._m3storage;
    rStorage[0] = _m4storage[0];
    rStorage[1] = _m4storage[1];
    rStorage[2] = _m4storage[2];
    rStorage[3] = _m4storage[4];
    rStorage[4] = _m4storage[5];
    rStorage[5] = _m4storage[6];
    rStorage[6] = _m4storage[8];
    rStorage[7] = _m4storage[9];
    rStorage[8] = _m4storage[10];
  }

  /// Sets the rotation matrix in this homogeneous transformation matrix.
  void setRotation(Matrix3 r) {
    final rStorage = r._m3storage;
    _m4storage[0] = rStorage[0];
    _m4storage[1] = rStorage[1];
    _m4storage[2] = rStorage[2];
    _m4storage[4] = rStorage[3];
    _m4storage[5] = rStorage[4];
    _m4storage[6] = rStorage[5];
    _m4storage[8] = rStorage[6];
    _m4storage[9] = rStorage[7];
    _m4storage[10] = rStorage[8];
  }

  /// Returns the normal matrix from this homogeneous transformation matrix.
  ///
  /// The normal matrix is the transpose of the inverse of the top-left 3x3 part
  /// of this 4x4 matrix.
  Matrix3 getNormalMatrix() => Matrix3.identity()..copyNormalMatrix(this);

  /// Returns the max scale value of the 3 axes.
  double getMaxScaleOnAxis() {
    final scaleXSq =
        _m4storage[0] * _m4storage[0] +
        _m4storage[1] * _m4storage[1] +
        _m4storage[2] * _m4storage[2];
    final scaleYSq =
        _m4storage[4] * _m4storage[4] +
        _m4storage[5] * _m4storage[5] +
        _m4storage[6] * _m4storage[6];
    final scaleZSq =
        _m4storage[8] * _m4storage[8] +
        _m4storage[9] * _m4storage[9] +
        _m4storage[10] * _m4storage[10];
    return math.sqrt(math.max(scaleXSq, math.max(scaleYSq, scaleZSq)));
  }

  /// Transposes just the upper 3x3 rotation matrix.
  void transposeRotation() {
    double temp;
    temp = _m4storage[1];
    _m4storage[1] = _m4storage[4];
    _m4storage[4] = temp;
    temp = _m4storage[2];
    _m4storage[2] = _m4storage[8];
    _m4storage[8] = temp;
    temp = _m4storage[4];
    _m4storage[4] = _m4storage[1];
    _m4storage[1] = temp;
    temp = _m4storage[6];
    _m4storage[6] = _m4storage[9];
    _m4storage[9] = temp;
    temp = _m4storage[8];
    _m4storage[8] = _m4storage[2];
    _m4storage[2] = temp;
    temp = _m4storage[9];
    _m4storage[9] = _m4storage[6];
    _m4storage[6] = temp;
  }

  /// Invert this.
  double invert() => copyInverse(this);

  /// Set this matrix to be the inverse of [arg]
  double copyInverse(Matrix4 arg) {
    final argStorage = arg._m4storage;
    final a00 = argStorage[0];
    final a01 = argStorage[1];
    final a02 = argStorage[2];
    final a03 = argStorage[3];
    final a10 = argStorage[4];
    final a11 = argStorage[5];
    final a12 = argStorage[6];
    final a13 = argStorage[7];
    final a20 = argStorage[8];
    final a21 = argStorage[9];
    final a22 = argStorage[10];
    final a23 = argStorage[11];
    final a30 = argStorage[12];
    final a31 = argStorage[13];
    final a32 = argStorage[14];
    final a33 = argStorage[15];
    final b00 = a00 * a11 - a01 * a10;
    final b01 = a00 * a12 - a02 * a10;
    final b02 = a00 * a13 - a03 * a10;
    final b03 = a01 * a12 - a02 * a11;
    final b04 = a01 * a13 - a03 * a11;
    final b05 = a02 * a13 - a03 * a12;
    final b06 = a20 * a31 - a21 * a30;
    final b07 = a20 * a32 - a22 * a30;
    final b08 = a20 * a33 - a23 * a30;
    final b09 = a21 * a32 - a22 * a31;
    final b10 = a21 * a33 - a23 * a31;
    final b11 = a22 * a33 - a23 * a32;
    final det =
        b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
    if (det == 0.0) {
      setFrom(arg);
      return 0.0;
    }
    final invDet = 1.0 / det;
    _m4storage[0] = (a11 * b11 - a12 * b10 + a13 * b09) * invDet;
    _m4storage[1] = (-a01 * b11 + a02 * b10 - a03 * b09) * invDet;
    _m4storage[2] = (a31 * b05 - a32 * b04 + a33 * b03) * invDet;
    _m4storage[3] = (-a21 * b05 + a22 * b04 - a23 * b03) * invDet;
    _m4storage[4] = (-a10 * b11 + a12 * b08 - a13 * b07) * invDet;
    _m4storage[5] = (a00 * b11 - a02 * b08 + a03 * b07) * invDet;
    _m4storage[6] = (-a30 * b05 + a32 * b02 - a33 * b01) * invDet;
    _m4storage[7] = (a20 * b05 - a22 * b02 + a23 * b01) * invDet;
    _m4storage[8] = (a10 * b10 - a11 * b08 + a13 * b06) * invDet;
    _m4storage[9] = (-a00 * b10 + a01 * b08 - a03 * b06) * invDet;
    _m4storage[10] = (a30 * b04 - a31 * b02 + a33 * b00) * invDet;
    _m4storage[11] = (-a20 * b04 + a21 * b02 - a23 * b00) * invDet;
    _m4storage[12] = (-a10 * b09 + a11 * b07 - a12 * b06) * invDet;
    _m4storage[13] = (a00 * b09 - a01 * b07 + a02 * b06) * invDet;
    _m4storage[14] = (-a30 * b03 + a31 * b01 - a32 * b00) * invDet;
    _m4storage[15] = (a20 * b03 - a21 * b01 + a22 * b00) * invDet;
    return det;
  }

  double invertRotation() {
    final det = determinant();
    if (det == 0.0) {
      return 0.0;
    }
    final invDet = 1.0 / det;
    double ix;
    double iy;
    double iz;
    double jx;
    double jy;
    double jz;
    double kx;
    double ky;
    double kz;
    ix =
        invDet *
        (_m4storage[5] * _m4storage[10] - _m4storage[6] * _m4storage[9]);
    iy =
        invDet *
        (_m4storage[2] * _m4storage[9] - _m4storage[1] * _m4storage[10]);
    iz =
        invDet *
        (_m4storage[1] * _m4storage[6] - _m4storage[2] * _m4storage[5]);
    jx =
        invDet *
        (_m4storage[6] * _m4storage[8] - _m4storage[4] * _m4storage[10]);
    jy =
        invDet *
        (_m4storage[0] * _m4storage[10] - _m4storage[2] * _m4storage[8]);
    jz =
        invDet *
        (_m4storage[2] * _m4storage[4] - _m4storage[0] * _m4storage[6]);
    kx =
        invDet *
        (_m4storage[4] * _m4storage[9] - _m4storage[5] * _m4storage[8]);
    ky =
        invDet *
        (_m4storage[1] * _m4storage[8] - _m4storage[0] * _m4storage[9]);
    kz =
        invDet *
        (_m4storage[0] * _m4storage[5] - _m4storage[1] * _m4storage[4]);
    _m4storage[0] = ix;
    _m4storage[1] = iy;
    _m4storage[2] = iz;
    _m4storage[4] = jx;
    _m4storage[5] = jy;
    _m4storage[6] = jz;
    _m4storage[8] = kx;
    _m4storage[9] = ky;
    _m4storage[10] = kz;
    return det;
  }

  /// Sets the upper 3x3 to a rotation of [radians] around X
  void setRotationX(double radians) {
    final c = math.cos(radians);
    final s = math.sin(radians);
    _m4storage[0] = 1.0;
    _m4storage[1] = 0.0;
    _m4storage[2] = 0.0;
    _m4storage[4] = 0.0;
    _m4storage[5] = c;
    _m4storage[6] = s;
    _m4storage[8] = 0.0;
    _m4storage[9] = -s;
    _m4storage[10] = c;
    _m4storage[3] = 0.0;
    _m4storage[7] = 0.0;
    _m4storage[11] = 0.0;
  }

  /// Sets the upper 3x3 to a rotation of [radians] around Y
  void setRotationY(double radians) {
    final c = math.cos(radians);
    final s = math.sin(radians);
    _m4storage[0] = c;
    _m4storage[1] = 0.0;
    _m4storage[2] = -s;
    _m4storage[4] = 0.0;
    _m4storage[5] = 1.0;
    _m4storage[6] = 0.0;
    _m4storage[8] = s;
    _m4storage[9] = 0.0;
    _m4storage[10] = c;
    _m4storage[3] = 0.0;
    _m4storage[7] = 0.0;
    _m4storage[11] = 0.0;
  }

  /// Sets the upper 3x3 to a rotation of [radians] around Z
  void setRotationZ(double radians) {
    final c = math.cos(radians);
    final s = math.sin(radians);
    _m4storage[0] = c;
    _m4storage[1] = s;
    _m4storage[2] = 0.0;
    _m4storage[4] = -s;
    _m4storage[5] = c;
    _m4storage[6] = 0.0;
    _m4storage[8] = 0.0;
    _m4storage[9] = 0.0;
    _m4storage[10] = 1.0;
    _m4storage[3] = 0.0;
    _m4storage[7] = 0.0;
    _m4storage[11] = 0.0;
  }

  /// Converts into Adjugate matrix and scales by [scale]
  void scaleAdjoint(double scale) {
    // Adapted from code by Richard Carling.
    final a1 = _m4storage[0];
    final b1 = _m4storage[4];
    final c1 = _m4storage[8];
    final d1 = _m4storage[12];
    final a2 = _m4storage[1];
    final b2 = _m4storage[5];
    final c2 = _m4storage[9];
    final d2 = _m4storage[13];
    final a3 = _m4storage[2];
    final b3 = _m4storage[6];
    final c3 = _m4storage[10];
    final d3 = _m4storage[14];
    final a4 = _m4storage[3];
    final b4 = _m4storage[7];
    final c4 = _m4storage[11];
    final d4 = _m4storage[15];
    _m4storage[0] =
        (b2 * (c3 * d4 - c4 * d3) -
            c2 * (b3 * d4 - b4 * d3) +
            d2 * (b3 * c4 - b4 * c3)) *
        scale;
    _m4storage[1] =
        -(a2 * (c3 * d4 - c4 * d3) -
            c2 * (a3 * d4 - a4 * d3) +
            d2 * (a3 * c4 - a4 * c3)) *
        scale;
    _m4storage[2] =
        (a2 * (b3 * d4 - b4 * d3) -
            b2 * (a3 * d4 - a4 * d3) +
            d2 * (a3 * b4 - a4 * b3)) *
        scale;
    _m4storage[3] =
        -(a2 * (b3 * c4 - b4 * c3) -
            b2 * (a3 * c4 - a4 * c3) +
            c2 * (a3 * b4 - a4 * b3)) *
        scale;
    _m4storage[4] =
        -(b1 * (c3 * d4 - c4 * d3) -
            c1 * (b3 * d4 - b4 * d3) +
            d1 * (b3 * c4 - b4 * c3)) *
        scale;
    _m4storage[5] =
        (a1 * (c3 * d4 - c4 * d3) -
            c1 * (a3 * d4 - a4 * d3) +
            d1 * (a3 * c4 - a4 * c3)) *
        scale;
    _m4storage[6] =
        -(a1 * (b3 * d4 - b4 * d3) -
            b1 * (a3 * d4 - a4 * d3) +
            d1 * (a3 * b4 - a4 * b3)) *
        scale;
    _m4storage[7] =
        (a1 * (b3 * c4 - b4 * c3) -
            b1 * (a3 * c4 - a4 * c3) +
            c1 * (a3 * b4 - a4 * b3)) *
        scale;
    _m4storage[8] =
        (b1 * (c2 * d4 - c4 * d2) -
            c1 * (b2 * d4 - b4 * d2) +
            d1 * (b2 * c4 - b4 * c2)) *
        scale;
    _m4storage[9] =
        -(a1 * (c2 * d4 - c4 * d2) -
            c1 * (a2 * d4 - a4 * d2) +
            d1 * (a2 * c4 - a4 * c2)) *
        scale;
    _m4storage[10] =
        (a1 * (b2 * d4 - b4 * d2) -
            b1 * (a2 * d4 - a4 * d2) +
            d1 * (a2 * b4 - a4 * b2)) *
        scale;
    _m4storage[11] =
        -(a1 * (b2 * c4 - b4 * c2) -
            b1 * (a2 * c4 - a4 * c2) +
            c1 * (a2 * b4 - a4 * b2)) *
        scale;
    _m4storage[12] =
        -(b1 * (c2 * d3 - c3 * d2) -
            c1 * (b2 * d3 - b3 * d2) +
            d1 * (b2 * c3 - b3 * c2)) *
        scale;
    _m4storage[13] =
        (a1 * (c2 * d3 - c3 * d2) -
            c1 * (a2 * d3 - a3 * d2) +
            d1 * (a2 * c3 - a3 * c2)) *
        scale;
    _m4storage[14] =
        -(a1 * (b2 * d3 - b3 * d2) -
            b1 * (a2 * d3 - a3 * d2) +
            d1 * (a2 * b3 - a3 * b2)) *
        scale;
    _m4storage[15] =
        (a1 * (b2 * c3 - b3 * c2) -
            b1 * (a2 * c3 - a3 * c2) +
            c1 * (a2 * b3 - a3 * b2)) *
        scale;
  }

  /// Rotates [arg] by the absolute rotation of this
  /// Returns [arg].
  /// Primarily used by AABB transformation code.
  Vector3 absoluteRotate(Vector3 arg) {
    final m00 = _m4storage[0].abs();
    final m01 = _m4storage[4].abs();
    final m02 = _m4storage[8].abs();
    final m10 = _m4storage[1].abs();
    final m11 = _m4storage[5].abs();
    final m12 = _m4storage[9].abs();
    final m20 = _m4storage[2].abs();
    final m21 = _m4storage[6].abs();
    final m22 = _m4storage[10].abs();
    final argStorage = arg._v3storage;
    final x = argStorage[0];
    final y = argStorage[1];
    final z = argStorage[2];
    argStorage[0] = x * m00 + y * m01 + z * m02 + 0.0 * 0.0;
    argStorage[1] = x * m10 + y * m11 + z * m12 + 0.0 * 0.0;
    argStorage[2] = x * m20 + y * m21 + z * m22 + 0.0 * 0.0;
    return arg;
  }

  /// Adds [o] to this.
  void add(Matrix4 o) {
    final oStorage = o._m4storage;
    _m4storage[0] = _m4storage[0] + oStorage[0];
    _m4storage[1] = _m4storage[1] + oStorage[1];
    _m4storage[2] = _m4storage[2] + oStorage[2];
    _m4storage[3] = _m4storage[3] + oStorage[3];
    _m4storage[4] = _m4storage[4] + oStorage[4];
    _m4storage[5] = _m4storage[5] + oStorage[5];
    _m4storage[6] = _m4storage[6] + oStorage[6];
    _m4storage[7] = _m4storage[7] + oStorage[7];
    _m4storage[8] = _m4storage[8] + oStorage[8];
    _m4storage[9] = _m4storage[9] + oStorage[9];
    _m4storage[10] = _m4storage[10] + oStorage[10];
    _m4storage[11] = _m4storage[11] + oStorage[11];
    _m4storage[12] = _m4storage[12] + oStorage[12];
    _m4storage[13] = _m4storage[13] + oStorage[13];
    _m4storage[14] = _m4storage[14] + oStorage[14];
    _m4storage[15] = _m4storage[15] + oStorage[15];
  }

  /// Subtracts [o] from this.
  void sub(Matrix4 o) {
    final oStorage = o._m4storage;
    _m4storage[0] = _m4storage[0] - oStorage[0];
    _m4storage[1] = _m4storage[1] - oStorage[1];
    _m4storage[2] = _m4storage[2] - oStorage[2];
    _m4storage[3] = _m4storage[3] - oStorage[3];
    _m4storage[4] = _m4storage[4] - oStorage[4];
    _m4storage[5] = _m4storage[5] - oStorage[5];
    _m4storage[6] = _m4storage[6] - oStorage[6];
    _m4storage[7] = _m4storage[7] - oStorage[7];
    _m4storage[8] = _m4storage[8] - oStorage[8];
    _m4storage[9] = _m4storage[9] - oStorage[9];
    _m4storage[10] = _m4storage[10] - oStorage[10];
    _m4storage[11] = _m4storage[11] - oStorage[11];
    _m4storage[12] = _m4storage[12] - oStorage[12];
    _m4storage[13] = _m4storage[13] - oStorage[13];
    _m4storage[14] = _m4storage[14] - oStorage[14];
    _m4storage[15] = _m4storage[15] - oStorage[15];
  }

  /// Negate this.
  void negate() {
    _m4storage[0] = -_m4storage[0];
    _m4storage[1] = -_m4storage[1];
    _m4storage[2] = -_m4storage[2];
    _m4storage[3] = -_m4storage[3];
    _m4storage[4] = -_m4storage[4];
    _m4storage[5] = -_m4storage[5];
    _m4storage[6] = -_m4storage[6];
    _m4storage[7] = -_m4storage[7];
    _m4storage[8] = -_m4storage[8];
    _m4storage[9] = -_m4storage[9];
    _m4storage[10] = -_m4storage[10];
    _m4storage[11] = -_m4storage[11];
    _m4storage[12] = -_m4storage[12];
    _m4storage[13] = -_m4storage[13];
    _m4storage[14] = -_m4storage[14];
    _m4storage[15] = -_m4storage[15];
  }

  /// Multiply this by [arg].
  void multiply(Matrix4 arg) {
    final m00 = _m4storage[0];
    final m01 = _m4storage[4];
    final m02 = _m4storage[8];
    final m03 = _m4storage[12];
    final m10 = _m4storage[1];
    final m11 = _m4storage[5];
    final m12 = _m4storage[9];
    final m13 = _m4storage[13];
    final m20 = _m4storage[2];
    final m21 = _m4storage[6];
    final m22 = _m4storage[10];
    final m23 = _m4storage[14];
    final m30 = _m4storage[3];
    final m31 = _m4storage[7];
    final m32 = _m4storage[11];
    final m33 = _m4storage[15];
    final argStorage = arg._m4storage;
    final n00 = argStorage[0];
    final n01 = argStorage[4];
    final n02 = argStorage[8];
    final n03 = argStorage[12];
    final n10 = argStorage[1];
    final n11 = argStorage[5];
    final n12 = argStorage[9];
    final n13 = argStorage[13];
    final n20 = argStorage[2];
    final n21 = argStorage[6];
    final n22 = argStorage[10];
    final n23 = argStorage[14];
    final n30 = argStorage[3];
    final n31 = argStorage[7];
    final n32 = argStorage[11];
    final n33 = argStorage[15];
    _m4storage[0] = (m00 * n00) + (m01 * n10) + (m02 * n20) + (m03 * n30);
    _m4storage[4] = (m00 * n01) + (m01 * n11) + (m02 * n21) + (m03 * n31);
    _m4storage[8] = (m00 * n02) + (m01 * n12) + (m02 * n22) + (m03 * n32);
    _m4storage[12] = (m00 * n03) + (m01 * n13) + (m02 * n23) + (m03 * n33);
    _m4storage[1] = (m10 * n00) + (m11 * n10) + (m12 * n20) + (m13 * n30);
    _m4storage[5] = (m10 * n01) + (m11 * n11) + (m12 * n21) + (m13 * n31);
    _m4storage[9] = (m10 * n02) + (m11 * n12) + (m12 * n22) + (m13 * n32);
    _m4storage[13] = (m10 * n03) + (m11 * n13) + (m12 * n23) + (m13 * n33);
    _m4storage[2] = (m20 * n00) + (m21 * n10) + (m22 * n20) + (m23 * n30);
    _m4storage[6] = (m20 * n01) + (m21 * n11) + (m22 * n21) + (m23 * n31);
    _m4storage[10] = (m20 * n02) + (m21 * n12) + (m22 * n22) + (m23 * n32);
    _m4storage[14] = (m20 * n03) + (m21 * n13) + (m22 * n23) + (m23 * n33);
    _m4storage[3] = (m30 * n00) + (m31 * n10) + (m32 * n20) + (m33 * n30);
    _m4storage[7] = (m30 * n01) + (m31 * n11) + (m32 * n21) + (m33 * n31);
    _m4storage[11] = (m30 * n02) + (m31 * n12) + (m32 * n22) + (m33 * n32);
    _m4storage[15] = (m30 * n03) + (m31 * n13) + (m32 * n23) + (m33 * n33);
  }

  /// Computes the result of `arg x this` and stores the result in-place in
  /// `this`.
  ///
  /// This method does not alter the [Matrix4] in [arg].
  void leftMultiply(Matrix4 arg) {
    final argStorage = arg._m4storage;
    final m00 = argStorage[0];
    final m01 = argStorage[4];
    final m02 = argStorage[8];
    final m03 = argStorage[12];
    final m10 = argStorage[1];
    final m11 = argStorage[5];
    final m12 = argStorage[9];
    final m13 = argStorage[13];
    final m20 = argStorage[2];
    final m21 = argStorage[6];
    final m22 = argStorage[10];
    final m23 = argStorage[14];
    final m30 = argStorage[3];
    final m31 = argStorage[7];
    final m32 = argStorage[11];
    final m33 = argStorage[15];
    final bStorage = _m4storage;
    final n00 = bStorage[0];
    final n01 = bStorage[4];
    final n02 = bStorage[8];
    final n03 = bStorage[12];
    final n10 = bStorage[1];
    final n11 = bStorage[5];
    final n12 = bStorage[9];
    final n13 = bStorage[13];
    final n20 = bStorage[2];
    final n21 = bStorage[6];
    final n22 = bStorage[10];
    final n23 = bStorage[14];
    final n30 = bStorage[3];
    final n31 = bStorage[7];
    final n32 = bStorage[11];
    final n33 = bStorage[15];
    bStorage[0] = (m00 * n00) + (m01 * n10) + (m02 * n20) + (m03 * n30);
    bStorage[4] = (m00 * n01) + (m01 * n11) + (m02 * n21) + (m03 * n31);
    bStorage[8] = (m00 * n02) + (m01 * n12) + (m02 * n22) + (m03 * n32);
    bStorage[12] = (m00 * n03) + (m01 * n13) + (m02 * n23) + (m03 * n33);
    bStorage[1] = (m10 * n00) + (m11 * n10) + (m12 * n20) + (m13 * n30);
    bStorage[5] = (m10 * n01) + (m11 * n11) + (m12 * n21) + (m13 * n31);
    bStorage[9] = (m10 * n02) + (m11 * n12) + (m12 * n22) + (m13 * n32);
    bStorage[13] = (m10 * n03) + (m11 * n13) + (m12 * n23) + (m13 * n33);
    bStorage[2] = (m20 * n00) + (m21 * n10) + (m22 * n20) + (m23 * n30);
    bStorage[6] = (m20 * n01) + (m21 * n11) + (m22 * n21) + (m23 * n31);
    bStorage[10] = (m20 * n02) + (m21 * n12) + (m22 * n22) + (m23 * n32);
    bStorage[14] = (m20 * n03) + (m21 * n13) + (m22 * n23) + (m23 * n33);
    bStorage[3] = (m30 * n00) + (m31 * n10) + (m32 * n20) + (m33 * n30);
    bStorage[7] = (m30 * n01) + (m31 * n11) + (m32 * n21) + (m33 * n31);
    bStorage[11] = (m30 * n02) + (m31 * n12) + (m32 * n22) + (m33 * n32);
    bStorage[15] = (m30 * n03) + (m31 * n13) + (m32 * n23) + (m33 * n33);
  }

  /// Multiply a copy of this with [arg].
  Matrix4 multiplied(Matrix4 arg) => clone()..multiply(arg);

  /// Multiply a transposed this with [arg].
  void transposeMultiply(Matrix4 arg) {
    final m00 = _m4storage[0];
    final m01 = _m4storage[1];
    final m02 = _m4storage[2];
    final m03 = _m4storage[3];
    final m10 = _m4storage[4];
    final m11 = _m4storage[5];
    final m12 = _m4storage[6];
    final m13 = _m4storage[7];
    final m20 = _m4storage[8];
    final m21 = _m4storage[9];
    final m22 = _m4storage[10];
    final m23 = _m4storage[11];
    final m30 = _m4storage[12];
    final m31 = _m4storage[13];
    final m32 = _m4storage[14];
    final m33 = _m4storage[15];
    final argStorage = arg._m4storage;
    _m4storage[0] =
        (m00 * argStorage[0]) +
        (m01 * argStorage[1]) +
        (m02 * argStorage[2]) +
        (m03 * argStorage[3]);
    _m4storage[4] =
        (m00 * argStorage[4]) +
        (m01 * argStorage[5]) +
        (m02 * argStorage[6]) +
        (m03 * argStorage[7]);
    _m4storage[8] =
        (m00 * argStorage[8]) +
        (m01 * argStorage[9]) +
        (m02 * argStorage[10]) +
        (m03 * argStorage[11]);
    _m4storage[12] =
        (m00 * argStorage[12]) +
        (m01 * argStorage[13]) +
        (m02 * argStorage[14]) +
        (m03 * argStorage[15]);
    _m4storage[1] =
        (m10 * argStorage[0]) +
        (m11 * argStorage[1]) +
        (m12 * argStorage[2]) +
        (m13 * argStorage[3]);
    _m4storage[5] =
        (m10 * argStorage[4]) +
        (m11 * argStorage[5]) +
        (m12 * argStorage[6]) +
        (m13 * argStorage[7]);
    _m4storage[9] =
        (m10 * argStorage[8]) +
        (m11 * argStorage[9]) +
        (m12 * argStorage[10]) +
        (m13 * argStorage[11]);
    _m4storage[13] =
        (m10 * argStorage[12]) +
        (m11 * argStorage[13]) +
        (m12 * argStorage[14]) +
        (m13 * argStorage[15]);
    _m4storage[2] =
        (m20 * argStorage[0]) +
        (m21 * argStorage[1]) +
        (m22 * argStorage[2]) +
        (m23 * argStorage[3]);
    _m4storage[6] =
        (m20 * argStorage[4]) +
        (m21 * argStorage[5]) +
        (m22 * argStorage[6]) +
        (m23 * argStorage[7]);
    _m4storage[10] =
        (m20 * argStorage[8]) +
        (m21 * argStorage[9]) +
        (m22 * argStorage[10]) +
        (m23 * argStorage[11]);
    _m4storage[14] =
        (m20 * argStorage[12]) +
        (m21 * argStorage[13]) +
        (m22 * argStorage[14]) +
        (m23 * argStorage[15]);
    _m4storage[3] =
        (m30 * argStorage[0]) +
        (m31 * argStorage[1]) +
        (m32 * argStorage[2]) +
        (m33 * argStorage[3]);
    _m4storage[7] =
        (m30 * argStorage[4]) +
        (m31 * argStorage[5]) +
        (m32 * argStorage[6]) +
        (m33 * argStorage[7]);
    _m4storage[11] =
        (m30 * argStorage[8]) +
        (m31 * argStorage[9]) +
        (m32 * argStorage[10]) +
        (m33 * argStorage[11]);
    _m4storage[15] =
        (m30 * argStorage[12]) +
        (m31 * argStorage[13]) +
        (m32 * argStorage[14]) +
        (m33 * argStorage[15]);
  }

  /// Multiply this with a transposed [arg].
  void multiplyTranspose(Matrix4 arg) {
    final m00 = _m4storage[0];
    final m01 = _m4storage[4];
    final m02 = _m4storage[8];
    final m03 = _m4storage[12];
    final m10 = _m4storage[1];
    final m11 = _m4storage[5];
    final m12 = _m4storage[9];
    final m13 = _m4storage[13];
    final m20 = _m4storage[2];
    final m21 = _m4storage[6];
    final m22 = _m4storage[10];
    final m23 = _m4storage[14];
    final m30 = _m4storage[3];
    final m31 = _m4storage[7];
    final m32 = _m4storage[11];
    final m33 = _m4storage[15];
    final argStorage = arg._m4storage;
    _m4storage[0] =
        (m00 * argStorage[0]) +
        (m01 * argStorage[4]) +
        (m02 * argStorage[8]) +
        (m03 * argStorage[12]);
    _m4storage[4] =
        (m00 * argStorage[1]) +
        (m01 * argStorage[5]) +
        (m02 * argStorage[9]) +
        (m03 * argStorage[13]);
    _m4storage[8] =
        (m00 * argStorage[2]) +
        (m01 * argStorage[6]) +
        (m02 * argStorage[10]) +
        (m03 * argStorage[14]);
    _m4storage[12] =
        (m00 * argStorage[3]) +
        (m01 * argStorage[7]) +
        (m02 * argStorage[11]) +
        (m03 * argStorage[15]);
    _m4storage[1] =
        (m10 * argStorage[0]) +
        (m11 * argStorage[4]) +
        (m12 * argStorage[8]) +
        (m13 * argStorage[12]);
    _m4storage[5] =
        (m10 * argStorage[1]) +
        (m11 * argStorage[5]) +
        (m12 * argStorage[9]) +
        (m13 * argStorage[13]);
    _m4storage[9] =
        (m10 * argStorage[2]) +
        (m11 * argStorage[6]) +
        (m12 * argStorage[10]) +
        (m13 * argStorage[14]);
    _m4storage[13] =
        (m10 * argStorage[3]) +
        (m11 * argStorage[7]) +
        (m12 * argStorage[11]) +
        (m13 * argStorage[15]);
    _m4storage[2] =
        (m20 * argStorage[0]) +
        (m21 * argStorage[4]) +
        (m22 * argStorage[8]) +
        (m23 * argStorage[12]);
    _m4storage[6] =
        (m20 * argStorage[1]) +
        (m21 * argStorage[5]) +
        (m22 * argStorage[9]) +
        (m23 * argStorage[13]);
    _m4storage[10] =
        (m20 * argStorage[2]) +
        (m21 * argStorage[6]) +
        (m22 * argStorage[10]) +
        (m23 * argStorage[14]);
    _m4storage[14] =
        (m20 * argStorage[3]) +
        (m21 * argStorage[7]) +
        (m22 * argStorage[11]) +
        (m23 * argStorage[15]);
    _m4storage[3] =
        (m30 * argStorage[0]) +
        (m31 * argStorage[4]) +
        (m32 * argStorage[8]) +
        (m33 * argStorage[12]);
    _m4storage[7] =
        (m30 * argStorage[1]) +
        (m31 * argStorage[5]) +
        (m32 * argStorage[9]) +
        (m33 * argStorage[13]);
    _m4storage[11] =
        (m30 * argStorage[2]) +
        (m31 * argStorage[6]) +
        (m32 * argStorage[10]) +
        (m33 * argStorage[14]);
    _m4storage[15] =
        (m30 * argStorage[3]) +
        (m31 * argStorage[7]) +
        (m32 * argStorage[11]) +
        (m33 * argStorage[15]);
  }

  /// Decomposes this into [translation], [rotation] and [scale] components.
  void decompose(Vector3 translation, Quaternion rotation, Vector3 scale) {
    final v = _decomposeV ??= Vector3.zero();
    var sx = (v..setValues(_m4storage[0], _m4storage[1], _m4storage[2])).length;
    final sy =
        (v..setValues(_m4storage[4], _m4storage[5], _m4storage[6])).length;
    final sz =
        (v..setValues(_m4storage[8], _m4storage[9], _m4storage[10])).length;

    if (determinant() < 0) {
      sx = -sx;
    }

    translation._v3storage[0] = _m4storage[12];
    translation._v3storage[1] = _m4storage[13];
    translation._v3storage[2] = _m4storage[14];

    final invSX = 1.0 / sx;
    final invSY = 1.0 / sy;
    final invSZ = 1.0 / sz;

    final m = _decomposeM ??= Matrix4.zero();
    m.setFrom(this);
    m._m4storage[0] *= invSX;
    m._m4storage[1] *= invSX;
    m._m4storage[2] *= invSX;
    m._m4storage[4] *= invSY;
    m._m4storage[5] *= invSY;
    m._m4storage[6] *= invSY;
    m._m4storage[8] *= invSZ;
    m._m4storage[9] *= invSZ;
    m._m4storage[10] *= invSZ;

    final r = _decomposeR ??= Matrix3.zero();
    m.copyRotation(r);
    rotation.setFromRotation(r);

    scale._v3storage[0] = sx;
    scale._v3storage[1] = sy;
    scale._v3storage[2] = sz;
  }

  static Vector3? _decomposeV;
  static Matrix4? _decomposeM;
  static Matrix3? _decomposeR;

  /// Rotate [arg] of type [Vector3] using the rotation defined by this.
  Vector3 rotate3(Vector3 arg) {
    final argStorage = arg._v3storage;
    final x_ =
        (_m4storage[0] * argStorage[0]) +
        (_m4storage[4] * argStorage[1]) +
        (_m4storage[8] * argStorage[2]);
    final y_ =
        (_m4storage[1] * argStorage[0]) +
        (_m4storage[5] * argStorage[1]) +
        (_m4storage[9] * argStorage[2]);
    final z_ =
        (_m4storage[2] * argStorage[0]) +
        (_m4storage[6] * argStorage[1]) +
        (_m4storage[10] * argStorage[2]);
    argStorage[0] = x_;
    argStorage[1] = y_;
    argStorage[2] = z_;
    return arg;
  }

  /// Rotate a copy of [arg] of type [Vector3] using the rotation defined by
  /// this. If a [out] parameter is supplied, the copy is stored in [out].
  Vector3 rotated3(Vector3 arg, [Vector3? out]) {
    if (out == null) {
      out = Vector3.copy(arg);
    } else {
      out.setFrom(arg);
    }
    return rotate3(out);
  }

  /// Transform [arg] of type [Vector3] using the transformation defined by
  /// this.
  Vector3 transform3(Vector3 arg) {
    final argStorage = arg._v3storage;
    final x_ =
        (_m4storage[0] * argStorage[0]) +
        (_m4storage[4] * argStorage[1]) +
        (_m4storage[8] * argStorage[2]) +
        _m4storage[12];
    final y_ =
        (_m4storage[1] * argStorage[0]) +
        (_m4storage[5] * argStorage[1]) +
        (_m4storage[9] * argStorage[2]) +
        _m4storage[13];
    final z_ =
        (_m4storage[2] * argStorage[0]) +
        (_m4storage[6] * argStorage[1]) +
        (_m4storage[10] * argStorage[2]) +
        _m4storage[14];
    argStorage[0] = x_;
    argStorage[1] = y_;
    argStorage[2] = z_;
    return arg;
  }

  /// Transform a copy of [arg] of type [Vector3] using the transformation
  /// defined by this. If a [out] parameter is supplied, the copy is stored in
  /// [out].
  Vector3 transformed3(Vector3 arg, [Vector3? out]) {
    if (out == null) {
      out = Vector3.copy(arg);
    } else {
      out.setFrom(arg);
    }
    return transform3(out);
  }

  /// Transform [arg] of type [Vector4] using the transformation defined by
  /// this.
  Vector4 transform(Vector4 arg) {
    final argStorage = arg._v4storage;
    final x_ =
        (_m4storage[0] * argStorage[0]) +
        (_m4storage[4] * argStorage[1]) +
        (_m4storage[8] * argStorage[2]) +
        (_m4storage[12] * argStorage[3]);
    final y_ =
        (_m4storage[1] * argStorage[0]) +
        (_m4storage[5] * argStorage[1]) +
        (_m4storage[9] * argStorage[2]) +
        (_m4storage[13] * argStorage[3]);
    final z_ =
        (_m4storage[2] * argStorage[0]) +
        (_m4storage[6] * argStorage[1]) +
        (_m4storage[10] * argStorage[2]) +
        (_m4storage[14] * argStorage[3]);
    final w_ =
        (_m4storage[3] * argStorage[0]) +
        (_m4storage[7] * argStorage[1]) +
        (_m4storage[11] * argStorage[2]) +
        (_m4storage[15] * argStorage[3]);
    argStorage[0] = x_;
    argStorage[1] = y_;
    argStorage[2] = z_;
    argStorage[3] = w_;
    return arg;
  }

  /// Transform [arg] of type [Vector3] using the perspective transformation
  /// defined by this.
  Vector3 perspectiveTransform(Vector3 arg) {
    final argStorage = arg._v3storage;
    final x_ =
        (_m4storage[0] * argStorage[0]) +
        (_m4storage[4] * argStorage[1]) +
        (_m4storage[8] * argStorage[2]) +
        _m4storage[12];
    final y_ =
        (_m4storage[1] * argStorage[0]) +
        (_m4storage[5] * argStorage[1]) +
        (_m4storage[9] * argStorage[2]) +
        _m4storage[13];
    final z_ =
        (_m4storage[2] * argStorage[0]) +
        (_m4storage[6] * argStorage[1]) +
        (_m4storage[10] * argStorage[2]) +
        _m4storage[14];
    final w_ =
        1.0 /
        ((_m4storage[3] * argStorage[0]) +
            (_m4storage[7] * argStorage[1]) +
            (_m4storage[11] * argStorage[2]) +
            _m4storage[15]);
    argStorage[0] = x_ * w_;
    argStorage[1] = y_ * w_;
    argStorage[2] = z_ * w_;
    return arg;
  }

  /// Transform a copy of [arg] of type [Vector4] using the transformation
  /// defined by this. If a [out] parameter is supplied, the copy is stored in
  /// [out].
  Vector4 transformed(Vector4 arg, [Vector4? out]) {
    if (out == null) {
      out = Vector4.copy(arg);
    } else {
      out.setFrom(arg);
    }
    return transform(out);
  }

  /// Copies this into [array] starting at [offset].
  void copyIntoArray(List<num> array, [int offset = 0]) {
    final i = offset;
    array[i + 15] = _m4storage[15];
    array[i + 14] = _m4storage[14];
    array[i + 13] = _m4storage[13];
    array[i + 12] = _m4storage[12];
    array[i + 11] = _m4storage[11];
    array[i + 10] = _m4storage[10];
    array[i + 9] = _m4storage[9];
    array[i + 8] = _m4storage[8];
    array[i + 7] = _m4storage[7];
    array[i + 6] = _m4storage[6];
    array[i + 5] = _m4storage[5];
    array[i + 4] = _m4storage[4];
    array[i + 3] = _m4storage[3];
    array[i + 2] = _m4storage[2];
    array[i + 1] = _m4storage[1];
    array[i + 0] = _m4storage[0];
  }

  /// Copies elements from [array] into this starting at [offset].
  void copyFromArray(List<double> array, [int offset = 0]) {
    final i = offset;
    _m4storage[15] = array[i + 15];
    _m4storage[14] = array[i + 14];
    _m4storage[13] = array[i + 13];
    _m4storage[12] = array[i + 12];
    _m4storage[11] = array[i + 11];
    _m4storage[10] = array[i + 10];
    _m4storage[9] = array[i + 9];
    _m4storage[8] = array[i + 8];
    _m4storage[7] = array[i + 7];
    _m4storage[6] = array[i + 6];
    _m4storage[5] = array[i + 5];
    _m4storage[4] = array[i + 4];
    _m4storage[3] = array[i + 3];
    _m4storage[2] = array[i + 2];
    _m4storage[1] = array[i + 1];
    _m4storage[0] = array[i + 0];
  }

  /// Multiply this to each set of xyz values in [array] starting at [offset].
  List<double> applyToVector3Array(List<double> array, [int offset = 0]) {
    for (var i = 0, j = offset; i < array.length; i += 3, j += 3) {
      final v = Vector3.array(array, j)..applyMatrix4(this);
      array[j] = v.storage[0];
      array[j + 1] = v.storage[1];
      array[j + 2] = v.storage[2];
    }

    return array;
  }

  Vector3 get right {
    final x = _m4storage[0];
    final y = _m4storage[1];
    final z = _m4storage[2];
    return Vector3(x, y, z);
  }

  Vector3 get up {
    final x = _m4storage[4];
    final y = _m4storage[5];
    final z = _m4storage[6];
    return Vector3(x, y, z);
  }

  Vector3 get forward {
    final x = _m4storage[8];
    final y = _m4storage[9];
    final z = _m4storage[10];
    return Vector3(x, y, z);
  }

  /// Is this the identity matrix?
  bool isIdentity() =>
      _m4storage[0] ==
          1.0 // col 1
          &&
      _m4storage[1] == 0.0 &&
      _m4storage[2] == 0.0 &&
      _m4storage[3] == 0.0 &&
      _m4storage[4] ==
          0.0 // col 2
          &&
      _m4storage[5] == 1.0 &&
      _m4storage[6] == 0.0 &&
      _m4storage[7] == 0.0 &&
      _m4storage[8] ==
          0.0 // col 3
          &&
      _m4storage[9] == 0.0 &&
      _m4storage[10] == 1.0 &&
      _m4storage[11] == 0.0 &&
      _m4storage[12] ==
          0.0 // col 4
          &&
      _m4storage[13] == 0.0 &&
      _m4storage[14] == 0.0 &&
      _m4storage[15] == 1.0;

  /// Is this the zero matrix?
  bool isZero() =>
      _m4storage[0] ==
          0.0 // col 1
          &&
      _m4storage[1] == 0.0 &&
      _m4storage[2] == 0.0 &&
      _m4storage[3] == 0.0 &&
      _m4storage[4] ==
          0.0 // col 2
          &&
      _m4storage[5] == 0.0 &&
      _m4storage[6] == 0.0 &&
      _m4storage[7] == 0.0 &&
      _m4storage[8] ==
          0.0 // col 3
          &&
      _m4storage[9] == 0.0 &&
      _m4storage[10] == 0.0 &&
      _m4storage[11] == 0.0 &&
      _m4storage[12] ==
          0.0 // col 4
          &&
      _m4storage[13] == 0.0 &&
      _m4storage[14] == 0.0 &&
      _m4storage[15] == 0.0;
}

google / vector_math.dart / 20199874437

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