14083457468

Committed 26 Mar 2025 12:37PM UTC coverage: 76.338% (+0.2%) from 76.127%

Build # 14083457468

Build Type

Pull #211

github

Committed by

web-flow

Commit Message

Merge 48899a8f3 into c902191a1

Pull Request Pull Request #211: Cad to svg

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5534 of 7958 branches covered (69.54%)

Branch coverage included in aggregate %.

247 of 293 new or added lines in 7 files covered. (84.3%)

22 existing lines in 2 files now uncovered.

21914 of 27998 relevant lines covered (78.27%)

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97.98

/src/ACadSharp/IO/SVG/SvgXmlWriter.cs

﻿using ACadSharp.Entities;
using ACadSharp.Tables;
using CSMath;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml;

namespace ACadSharp.IO.SVG
{
        internal class SvgXmlWriter : XmlTextWriter
        {
                public event NotificationEventHandler OnNotification;

                public SvgConfiguration Configuration { get; } = new();

                public SvgXmlWriter(Stream w, Encoding encoding, SvgConfiguration configuration) : base(w, encoding)
                {
                        this.Configuration = configuration;
                }

                public void WriteAttributeString(string localName, double value)
                {
                        this.WriteAttributeString(localName, value.ToString(CultureInfo.InvariantCulture));
                }

                public void WriteBlock(BlockRecord record)
                {
                        BoundingBox box = record.GetBoundingBox();
                        this.startDocument(box);

                        Transform transform = new Transform(-box.Min, new XYZ(1), XYZ.Zero);
                        foreach (var e in record.Entities)
                        {
                                this.writeEntity(e);
                        }

                        this.endDocument();
                }

                private string colorSvg(Color color)
                {
                        return $"rgb({color.R},{color.G},{color.B})";
                }

                private void endDocument()
                {
                        this.WriteEndElement();
                        this.WriteEndDocument();
                        this.Close();
                }

                private void notify(string message, NotificationType type, Exception ex = null)
                {
                        this.OnNotification?.Invoke(this, new NotificationEventArgs(message, type, ex));
                }

                private void startDocument(BoundingBox box)
                {
                        this.WriteStartDocument();

                        this.WriteStartElement("svg");
                        this.WriteAttributeString("xmlns", "http://www.w3.org/2000/svg");

                        this.WriteAttributeString("width", box.Max.X - box.Min.X);
                        this.WriteAttributeString("height", box.Max.Y - box.Min.Y);

                        this.WriteStartAttribute("viewBox");
                        this.WriteValue(box.Min.X);
                        this.WriteValue(" ");
                        this.WriteValue(box.Min.Y);
                        this.WriteValue(" ");
                        this.WriteValue(box.Max.X - box.Min.X);
                        this.WriteValue(" ");
                        this.WriteValue(box.Max.Y - box.Min.Y);
                        this.WriteEndAttribute();

                        this.WriteAttributeString("transform", $"scale(1,-1)");
                }

                private string svgPoints(IEnumerable<IVector> points, Transform transform)
                {
                        if (!points.Any())
                        {
                                return string.Empty;
                        }

                        StringBuilder sb = new StringBuilder();
                        sb.Append(transform.ApplyTransform(points.First().Convert<XYZ>()).SvgPoint());
                        foreach (IVector point in points.Skip(1))
                        {
                                sb.Append(' ');
                                sb.Append(transform.ApplyTransform(point.Convert<XYZ>()).SvgPoint());
                        }

                        return sb.ToString();
                }

                private void writeArc(Arc arc, Transform transform)
                {
                        //A rx ry rotation large-arc-flag sweep-flag x y

                        this.WriteStartElement("polyline");

                        this.writeEntityStyle(arc);

                        IEnumerable<IVector> vertices = arc.PolygonalVertexes(256).OfType<IVector>();
                        string pts = this.svgPoints(vertices, transform);
                        this.WriteAttributeString("points", pts);
                        this.WriteAttributeString("fill", "none");

                        this.WriteEndElement();
                }

                private void writeCircle(Circle circle, Transform transform)
                {
                        var loc = transform.ApplyTransform(circle.Center);

                        this.WriteStartElement("circle");

                        this.writeEntityStyle(circle);

                        this.WriteAttributeString("r", circle.Radius);
                        this.WriteAttributeString("cx", loc.X);
                        this.WriteAttributeString("cy", loc.Y);

                        this.WriteAttributeString("fill", "none");

                        this.WriteEndElement();
                }

                private void writeEllipse(Ellipse ellipse, Transform transform)
                {
                        this.WriteStartElement("polygon");

                        this.writeEntityStyle(ellipse);

                        IEnumerable<IVector> vertices = ellipse.PolygonalVertexes(256).OfType<IVector>();
                        string pts = this.svgPoints(vertices, transform);
                        this.WriteAttributeString("points", pts);
                        this.WriteAttributeString("fill", "none");

                        this.WriteEndElement();
                }

                private void writeEntity(Entity entity)
                {
                        this.writeEntity(entity, new Transform());
                }

                private void writeEntity(Entity entity, Transform transform)
                {
                        switch (entity)
                        {
                                case Arc arc:
                                        this.writeArc(arc, transform);
                                        break;
                                case Line line:
                                        this.writeLine(line, transform);
                                        break;
                                case Point point:
                                        this.writePoint(point, transform);
                                        break;
                                case Circle circle:
                                        this.writeCircle(circle, transform);
                                        break;
                                case Ellipse ellipse:
                                        this.writeEllipse(ellipse, transform);
                                        break;
                                case IPolyline polyline:
                                        this.writePolyline(polyline, transform);
                                        break;
                                case TextEntity text:
                                        this.writeText(text, transform);
                                        break;
                                default:
                                        this.notify($"[{entity.ObjectName}] Entity not implemented.", NotificationType.NotImplemented);
                                        break;
                        }
                }

                private void writeEntityStyle(IEntity entity)
                {
                        Color color = entity.GetActiveColor();

                        this.WriteAttributeString("stroke", this.colorSvg(color));

                        var lineWeight = entity.LineWeight;
                        switch (lineWeight)
                        {
                                case LineweightType.ByLayer:
                                        lineWeight = entity.Layer.LineWeight;
                                        break;
                        }

                        this.WriteAttributeString("stroke-width", Configuration.GetLineWeightValue(lineWeight));
                }

                private void writeLine(Line line, Transform transform)
                {
                        var start = transform.ApplyTransform(line.StartPoint);
                        var end = transform.ApplyTransform(line.EndPoint);

                        this.WriteStartElement("line");

                        this.writeEntityStyle(line);

                        this.WriteAttributeString("x1", start.X);
                        this.WriteAttributeString("y1", start.Y);
                        this.WriteAttributeString("x2", end.X);
                        this.WriteAttributeString("y2", end.Y);

                        this.WriteEndElement();
                }

                private void writePoint(Point point, Transform transform)
                {
                        var loc = transform.ApplyTransform(point.Location);

                        this.WriteStartElement("circle");

                        this.writeEntityStyle(point);

                        this.WriteAttributeString("r", this.Configuration.PointRadius);
                        this.WriteAttributeString("cx", loc.X);
                        this.WriteAttributeString("cy", loc.Y);

                        this.WriteAttributeString("fill", this.colorSvg(point.GetActiveColor()));

                        this.WriteEndElement();
                }

                private void writeText(TextEntity text, Transform transform)
                {
                        var insert = transform.ApplyTransform(text.InsertPoint);

                        this.WriteStartElement("g");
                        this.WriteAttributeString("transform", $"translate({insert.X.ToString(CultureInfo.InvariantCulture)},{insert.Y.ToString(CultureInfo.InvariantCulture)})");

                        this.WriteStartElement("text");
                        this.WriteAttributeString("transform", "scale(1,-1)");

                        this.WriteAttributeString("fill", this.colorSvg(text.GetActiveColor()));

                        //<text x="20" y="35" class="small">My</text>
                        this.WriteStartAttribute("style");
                        this.WriteValue("font:");
                        this.WriteValue(text.Height);
                        this.WriteValue("px");
                        this.WriteValue(" ");
                        this.WriteValue(Path.GetFileNameWithoutExtension(text.Style.Filename));
                        this.WriteEndAttribute();

                        this.WriteRaw(text.Value);

                        this.WriteEndElement();
                        this.WriteEndElement();
                }

                private void writePolyline(IPolyline polyline, Transform transform)
                {
                        if (polyline.IsClosed)
                        {
                                this.WriteStartElement("polygon");
                        }
                        else
                        {
                                this.WriteStartElement("polyline");
                        }

                        this.writeEntityStyle(polyline);

                        var vertices = polyline.Vertices.Select(v => v.Location).ToList();

                        string pts = this.svgPoints(polyline.Vertices.Select(v => v.Location), transform);
                        this.WriteAttributeString("points", pts);
                        this.WriteAttributeString("fill", "none");

                        this.WriteEndElement();
                }
        }
}

1	using ACadSharp.Entities;
2	using ACadSharp.Tables;
3	using CSMath;
4	using System;
5	using System.Collections.Generic;
6	using System.Globalization;
7	using System.IO;
8	using System.Linq;
9	using System.Text;
10	using System.Xml;
11
12	namespace ACadSharp.IO.SVG
13	{
14	internal class SvgXmlWriter : XmlTextWriter
15	{
16	public event NotificationEventHandler OnNotification;
17
18	public SvgConfiguration Configuration { get; } = new();	18✔
19
20	public SvgXmlWriter(Stream w, Encoding encoding, SvgConfiguration configuration) : base(w, encoding)	1✔
21	{	1✔
22	this.Configuration = configuration;	1✔
23	}	1✔
24
25	public void WriteAttributeString(string localName, double value)
26	{	52✔
27	this.WriteAttributeString(localName, value.ToString(CultureInfo.InvariantCulture));	52✔
28	}	52✔
29
30	public void WriteBlock(BlockRecord record)
31	{	1✔
32	BoundingBox box = record.GetBoundingBox();	1✔
33	this.startDocument(box);	1✔
34
35	Transform transform = new Transform(-box.Min, new XYZ(1), XYZ.Zero);	1✔
36	foreach (var e in record.Entities)	47✔
37	{	22✔
38	this.writeEntity(e);	22✔
39	}	22✔
40
41	this.endDocument();	1✔
42	}	1✔
43
44	private string colorSvg(Color color)
45	{	19✔
46	return $"rgb({color.R},{color.G},{color.B})";	19✔
47	}	19✔
48
49	private void endDocument()
50	{	1✔
51	this.WriteEndElement();	1✔
52	this.WriteEndDocument();	1✔
53	this.Close();	1✔
54	}	1✔
55
56	private void notify(string message, NotificationType type, Exception ex = null)
57	{	4✔
58	this.OnNotification?.Invoke(this, new NotificationEventArgs(message, type, ex));	4!
59	}	4✔
60
61	private void startDocument(BoundingBox box)
62	{	1✔
63	this.WriteStartDocument();	1✔
64
65	this.WriteStartElement("svg");	1✔
66	this.WriteAttributeString("xmlns", "http://www.w3.org/2000/svg");	1✔
67
68	this.WriteAttributeString("width", box.Max.X - box.Min.X);	1✔
69	this.WriteAttributeString("height", box.Max.Y - box.Min.Y);	1✔
70
71	this.WriteStartAttribute("viewBox");	1✔
72	this.WriteValue(box.Min.X);	1✔
73	this.WriteValue(" ");	1✔
74	this.WriteValue(box.Min.Y);	1✔
75	this.WriteValue(" ");	1✔
76	this.WriteValue(box.Max.X - box.Min.X);	1✔
77	this.WriteValue(" ");	1✔
78	this.WriteValue(box.Max.Y - box.Min.Y);	1✔
79	this.WriteEndAttribute();	1✔
80
81	this.WriteAttributeString("transform", $"scale(1,-1)");	1✔
82	}	1✔
83
84	private string svgPoints(IEnumerable<IVector> points, Transform transform)
85	{	7✔
86	if (!points.Any())	7!
NEW 87	{	×
NEW 88	return string.Empty;	×
89	}
90
91	StringBuilder sb = new StringBuilder();	7✔
92	sb.Append(transform.ApplyTransform(points.First().Convert<XYZ>()).SvgPoint());	7✔
93	foreach (IVector point in points.Skip(1))	2,079✔
94	{	1,029✔
95	sb.Append(' ');	1,029✔
96	sb.Append(transform.ApplyTransform(point.Convert<XYZ>()).SvgPoint());	1,029✔
97	}	1,029✔
98
99	return sb.ToString();	7✔
100	}	7✔
101
102	private void writeArc(Arc arc, Transform transform)
103	{	3✔
104	//A rx ry rotation large-arc-flag sweep-flag x y
105
106	this.WriteStartElement("polyline");	3✔
107
108	this.writeEntityStyle(arc);	3✔
109
110	IEnumerable<IVector> vertices = arc.PolygonalVertexes(256).OfType<IVector>();	3✔
111	string pts = this.svgPoints(vertices, transform);	3✔
112	this.WriteAttributeString("points", pts);	3✔
113	this.WriteAttributeString("fill", "none");	3✔
114
115	this.WriteEndElement();	3✔
116	}	3✔
117
118	private void writeCircle(Circle circle, Transform transform)
119	{	1✔
120	var loc = transform.ApplyTransform(circle.Center);	1✔
121
122	this.WriteStartElement("circle");	1✔
123
124	this.writeEntityStyle(circle);	1✔
125
126	this.WriteAttributeString("r", circle.Radius);	1✔
127	this.WriteAttributeString("cx", loc.X);	1✔
128	this.WriteAttributeString("cy", loc.Y);	1✔
129
130	this.WriteAttributeString("fill", "none");	1✔
131
132	this.WriteEndElement();	1✔
133	}	1✔
134
135	private void writeEllipse(Ellipse ellipse, Transform transform)
136	{	1✔
137	this.WriteStartElement("polygon");	1✔
138
139	this.writeEntityStyle(ellipse);	1✔
140
141	IEnumerable<IVector> vertices = ellipse.PolygonalVertexes(256).OfType<IVector>();	1✔
142	string pts = this.svgPoints(vertices, transform);	1✔
143	this.WriteAttributeString("points", pts);	1✔
144	this.WriteAttributeString("fill", "none");	1✔
145
146	this.WriteEndElement();	1✔
147	}	1✔
148
149	private void writeEntity(Entity entity)
150	{	22✔
151	this.writeEntity(entity, new Transform());	22✔
152	}	22✔
153
154	private void writeEntity(Entity entity, Transform transform)
155	{	22✔
156	switch (entity)	22✔
157	{
158	case Arc arc:
159	this.writeArc(arc, transform);	3✔
160	break;	3✔
161	case Line line:
162	this.writeLine(line, transform);	7✔
163	break;	7✔
164	case Point point:
165	this.writePoint(point, transform);	1✔
166	break;	1✔
167	case Circle circle:
168	this.writeCircle(circle, transform);	1✔
169	break;	1✔
170	case Ellipse ellipse:
171	this.writeEllipse(ellipse, transform);	1✔
172	break;	1✔
173	case IPolyline polyline:
174	this.writePolyline(polyline, transform);	3✔
175	break;	3✔
176	case TextEntity text:
177	this.writeText(text, transform);	2✔
178	break;	2✔
179	default:
180	this.notify($"[{entity.ObjectName}] Entity not implemented.", NotificationType.NotImplemented);	4✔
181	break;	4✔
182	}
183	}	22✔
184
185	private void writeEntityStyle(IEntity entity)
186	{	16✔
187	Color color = entity.GetActiveColor();	16✔
188
189	this.WriteAttributeString("stroke", this.colorSvg(color));	16✔
190
191	var lineWeight = entity.LineWeight;	16✔
192	switch (lineWeight)	16✔
193	{
194	case LineweightType.ByLayer:
195	lineWeight = entity.Layer.LineWeight;	16✔
196	break;	16✔
197	}
198
199	this.WriteAttributeString("stroke-width", Configuration.GetLineWeightValue(lineWeight));	16✔
200	}	16✔
201
202	private void writeLine(Line line, Transform transform)
203	{	7✔
204	var start = transform.ApplyTransform(line.StartPoint);	7✔
205	var end = transform.ApplyTransform(line.EndPoint);	7✔
206
207	this.WriteStartElement("line");	7✔
208
209	this.writeEntityStyle(line);	7✔
210
211	this.WriteAttributeString("x1", start.X);	7✔
212	this.WriteAttributeString("y1", start.Y);	7✔
213	this.WriteAttributeString("x2", end.X);	7✔
214	this.WriteAttributeString("y2", end.Y);	7✔
215
216	this.WriteEndElement();	7✔
217	}	7✔
218
219	private void writePoint(Point point, Transform transform)
220	{	1✔
221	var loc = transform.ApplyTransform(point.Location);	1✔
222
223	this.WriteStartElement("circle");	1✔
224
225	this.writeEntityStyle(point);	1✔
226
227	this.WriteAttributeString("r", this.Configuration.PointRadius);	1✔
228	this.WriteAttributeString("cx", loc.X);	1✔
229	this.WriteAttributeString("cy", loc.Y);	1✔
230
231	this.WriteAttributeString("fill", this.colorSvg(point.GetActiveColor()));	1✔
232
233	this.WriteEndElement();	1✔
234	}	1✔
235
236	private void writeText(TextEntity text, Transform transform)
237	{	2✔
238	var insert = transform.ApplyTransform(text.InsertPoint);	2✔
239
240	this.WriteStartElement("g");	2✔
241	this.WriteAttributeString("transform", $"translate({insert.X.ToString(CultureInfo.InvariantCulture)},{insert.Y.ToString(CultureInfo.InvariantCulture)})");	2✔
242
243	this.WriteStartElement("text");	2✔
244	this.WriteAttributeString("transform", "scale(1,-1)");	2✔
245
246	this.WriteAttributeString("fill", this.colorSvg(text.GetActiveColor()));	2✔
247
248	//<text x="20" y="35" class="small">My</text>
249	this.WriteStartAttribute("style");	2✔
250	this.WriteValue("font:");	2✔
251	this.WriteValue(text.Height);	2✔
252	this.WriteValue("px");	2✔
253	this.WriteValue(" ");	2✔
254	this.WriteValue(Path.GetFileNameWithoutExtension(text.Style.Filename));	2✔
255	this.WriteEndAttribute();	2✔
256
257	this.WriteRaw(text.Value);	2✔
258
259	this.WriteEndElement();	2✔
260	this.WriteEndElement();	2✔
261	}	2✔
262
263	private void writePolyline(IPolyline polyline, Transform transform)
264	{	3✔
265	if (polyline.IsClosed)	3✔
266	{	2✔
267	this.WriteStartElement("polygon");	2✔
268	}	2✔
269	else
270	{	1✔
271	this.WriteStartElement("polyline");	1✔
272	}	1✔
273
274	this.writeEntityStyle(polyline);	3✔
275
276	var vertices = polyline.Vertices.Select(v => v.Location).ToList();	15✔
277
278	string pts = this.svgPoints(polyline.Vertices.Select(v => v.Location), transform);	21✔
279	this.WriteAttributeString("points", pts);	3✔
280	this.WriteAttributeString("fill", "none");	3✔
281
282	this.WriteEndElement();	3✔
283	}	3✔
284	}
285	}

DomCR / ACadSharp / 14083457468

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