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/operators/src/processing/raster_scaling.rs

use crate::engine::{
    CreateSpan, ExecutionContext, InitializedRasterOperator, Operator, OperatorName,
    RasterOperator, RasterQueryProcessor, RasterResultDescriptor, SingleRasterSource,
    TypedRasterQueryProcessor,
};
use crate::util::Result;
use async_trait::async_trait;
use futures::{StreamExt, TryStreamExt};

use geoengine_datatypes::raster::{
    ElementScaling, ScaleTransformation, ScalingTransformation, UnscaleTransformation,
};
use geoengine_datatypes::{
    primitives::Measurement,
    raster::{Pixel, RasterProperties, RasterPropertiesKey, RasterTile2D},
};
use num::FromPrimitive;
use num_traits::AsPrimitive;
use rayon::ThreadPool;
use serde::{Deserialize, Serialize};
use std::marker::PhantomData;
use std::sync::Arc;
use tracing::{span, Level};

#[derive(Debug, Serialize, Deserialize, Clone)]
#[serde(rename_all = "camelCase")]
pub struct RasterScalingParams {
    slope: PropertiesKeyOrValue,
    offset: PropertiesKeyOrValue,
    output_measurement: Option<Measurement>,
    scaling_mode: ScalingMode,
}

#[derive(Debug, Serialize, Deserialize, Clone, Copy)]
#[serde(rename_all = "camelCase")]
pub enum ScalingMode {
    Scale,
    Unscale,
}

#[derive(Debug, Serialize, Deserialize, Clone)]
#[serde(rename_all = "camelCase", tag = "type")]
enum PropertiesKeyOrValue {
    MetadataKey(RasterPropertiesKey),
    Constant { value: f64 },
}

/// The raster scaling operator scales/unscales the values of a raster by a given scale factor and offset.
/// This is done by applying the following formulas to every pixel.
/// For unscaling the formula is:
///
/// `p_new = p_old * slope + offset`
///
/// For scaling the formula is:
///
/// `p_new = (p_old - offset) / slope`
///
/// `p_old` and `p_new` refer to the old and new pixel values,
/// The slope and offset values are either properties attached to the input raster or a fixed value.
///
/// An example for Meteosat Second Generation properties is:
///
/// - offset: `msg.calibration_offset`
/// - slope: `msg.calibration_slope`
pub type RasterScaling = Operator<RasterScalingParams, SingleRasterSource>;

impl OperatorName for RasterScaling {
    const TYPE_NAME: &'static str = "RasterScaling";
}

pub struct InitializedRasterScalingOperator {
    slope: PropertiesKeyOrValue,
    offset: PropertiesKeyOrValue,
    result_descriptor: RasterResultDescriptor,
    source: Box<dyn InitializedRasterOperator>,
    scaling_mode: ScalingMode,
}

#[typetag::serde]
#[async_trait]
impl RasterOperator for RasterScaling {
    async fn _initialize(
        self: Box<Self>,
        context: &dyn ExecutionContext,
    ) -> Result<Box<dyn InitializedRasterOperator>> {
        let input = self.sources.raster.initialize(context).await?;
        let in_desc = input.result_descriptor();

        let out_desc = RasterResultDescriptor {
            spatial_reference: in_desc.spatial_reference,
            data_type: in_desc.data_type,
            measurement: self
                .params
                .output_measurement
                .unwrap_or_else(|| in_desc.measurement.clone()),
            bbox: in_desc.bbox,
            time: in_desc.time,
            resolution: in_desc.resolution,
        };

        let initialized_operator = InitializedRasterScalingOperator {
            slope: self.params.slope,
            offset: self.params.offset,
            result_descriptor: out_desc,
            source: input,
            scaling_mode: self.params.scaling_mode,
        };

        Ok(initialized_operator.boxed())
    }

    span_fn!(RasterScaling);
}

impl InitializedRasterOperator for InitializedRasterScalingOperator {
    fn result_descriptor(&self) -> &RasterResultDescriptor {
        &self.result_descriptor
    }

    fn query_processor(&self) -> Result<TypedRasterQueryProcessor> {
        let slope = self.slope.clone();
        let offset = self.offset.clone();
        let source = self.source.query_processor()?;
        let scaling_mode = self.scaling_mode;

        let res = match scaling_mode {
            ScalingMode::Scale => {
                call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, ScaleTransformation>(slope, offset,  source_proc)) })
            }
            ScalingMode::Unscale => {
                call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, UnscaleTransformation>(slope, offset,  source_proc)) })
            }
        };

        Ok(res)
    }
}

struct RasterTransformationProcessor<Q, P, S>
where
    Q: RasterQueryProcessor<RasterType = P>,
{
    source: Q,
    slope: PropertiesKeyOrValue,
    offset: PropertiesKeyOrValue,
    _transformation: PhantomData<S>,
}

fn create_boxed_processor<Q, P, S>(
    slope: PropertiesKeyOrValue,
    offset: PropertiesKeyOrValue,
    source: Q,
) -> Box<dyn RasterQueryProcessor<RasterType = P>>
where
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    RasterTransformationProcessor::<Q, P, S>::create(slope, offset, source).boxed()
}

impl<Q, P, S> RasterTransformationProcessor<Q, P, S>
where
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    pub fn create(
        slope: PropertiesKeyOrValue,
        offset: PropertiesKeyOrValue,
        source: Q,
    ) -> RasterTransformationProcessor<Q, P, S> {
        RasterTransformationProcessor {
            source,
            slope,
            offset,
            _transformation: PhantomData,
        }
    }

    async fn scale_tile_async(
        &self,
        tile: RasterTile2D<P>,
        _pool: Arc<ThreadPool>,
    ) -> Result<RasterTile2D<P>> {
        let offset = Self::prop_value(&self.offset, &tile.properties)?;
        let slope = Self::prop_value(&self.slope, &tile.properties)?;

        let res_tile =
            crate::util::spawn_blocking(move || tile.transform_elements::<S>(slope, offset))
                .await?;

        Ok(res_tile)
    }

    fn prop_value(prop_key_or_value: &PropertiesKeyOrValue, props: &RasterProperties) -> Result<P> {
        let value = match prop_key_or_value {
            PropertiesKeyOrValue::MetadataKey(key) => props.number_property::<P>(key)?,
            PropertiesKeyOrValue::Constant { value } => value.as_(),
        };
        Ok(value)
    }
}

#[async_trait]
impl<Q, P, S> RasterQueryProcessor for RasterTransformationProcessor<Q, P, S>
where
    P: Pixel + FromPrimitive + 'static + Default,
    f64: AsPrimitive<P>,
    Q: RasterQueryProcessor<RasterType = P> + 'static,
    S: Send + Sync + 'static + ScalingTransformation<P>,
{
    type RasterType = P;

    async fn raster_query<'a>(
        &'a self,
        query: geoengine_datatypes::primitives::RasterQueryRectangle,
        ctx: &'a dyn crate::engine::QueryContext,
    ) -> Result<
        futures::stream::BoxStream<
            'a,
            Result<geoengine_datatypes::raster::RasterTile2D<Self::RasterType>>,
        >,
    > {
        let src = self.source.raster_query(query, ctx).await?;
        let rs = src.and_then(move |tile| self.scale_tile_async(tile, ctx.thread_pool().clone()));
        Ok(rs.boxed())
    }
}

#[cfg(test)]
mod tests {

    use geoengine_datatypes::{
        primitives::{SpatialPartition2D, SpatialResolution, TimeInterval},
        raster::{
            Grid2D, GridOrEmpty2D, GridShape, MaskedGrid2D, RasterDataType, TileInformation,
            TilingSpecification,
        },
        spatial_reference::SpatialReference,
        util::test::TestDefault,
    };

    use crate::{
        engine::{ChunkByteSize, MockExecutionContext},
        mock::{MockRasterSource, MockRasterSourceParams},
    };

    use super::*;

    #[tokio::test]
    async fn test_unscale() {
        let grid_shape = [2, 2].into();

        let tiling_specification = TilingSpecification {
            origin_coordinate: [0.0, 0.0].into(),
            tile_size_in_pixels: grid_shape,
        };

        let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![7_u8, 7, 7, 6]).unwrap());

        let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);
        let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());

        let mut raster_props = RasterProperties::default();
        raster_props.set_scale(2.0);
        raster_props.set_offset(1.0);

        let raster_tile = RasterTile2D::new_with_tile_info_and_properties(
            TimeInterval::default(),
            TileInformation {
                global_geo_transform: TestDefault::test_default(),
                global_tile_position: [0, 0].into(),
                tile_size_in_pixels: grid_shape,
            },
            raster.into(),
            raster_props,
        );

        let spatial_resolution = raster_tile.spatial_resolution();

        let mrs = MockRasterSource {
            params: MockRasterSourceParams {
                data: vec![raster_tile],
                result_descriptor: RasterResultDescriptor {
                    data_type: RasterDataType::U8,
                    spatial_reference: SpatialReference::epsg_4326().into(),
                    measurement: Measurement::Unitless,
                    bbox: None,
                    time: None,
                    resolution: Some(spatial_resolution),
                },
            },
        }
        .boxed();

        let slope = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {
            domain: None,
            key: "scale".to_string(),
        });
        let offset = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {
            domain: None,
            key: "offset".to_string(),
        });

        let scaling_mode = ScalingMode::Unscale;

        let output_measurement = None;

        let op = RasterScaling {
            params: RasterScalingParams {
                slope,
                offset,
                output_measurement,
                scaling_mode,
            },
            sources: SingleRasterSource { raster: mrs },
        }
        .boxed();

        let initialized_op = op.initialize(&ctx).await.unwrap();

        let result_descriptor = initialized_op.result_descriptor();

        assert_eq!(result_descriptor.data_type, RasterDataType::U8);
        assert_eq!(result_descriptor.measurement, Measurement::Unitless);

        let query_processor = initialized_op.query_processor().unwrap();

        let query = geoengine_datatypes::primitives::RasterQueryRectangle {
            spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),
            spatial_resolution: SpatialResolution::one(),
            time_interval: TimeInterval::default(),
        };

        let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {
            panic!("expected TypedRasterQueryProcessor::U8");
        };

        let stream = typed_processor
            .raster_query(query, &query_ctx)
            .await
            .unwrap();

        let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;

        let result_tile = results.as_slice()[0].as_ref().unwrap();

        let result_grid = result_tile.grid_array.clone();

        match result_grid {
            GridOrEmpty2D::Grid(grid) => {
                assert_eq!(grid.shape(), &GridShape::new([2, 2]));

                let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();

                let expected = vec![Some(15), Some(15), Some(15), Some(13)];

                assert_eq!(res, expected);
            }
            GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),
        }
    }

    #[tokio::test]
    async fn test_scale() {
        let grid_shape = [2, 2].into();

        let tiling_specification = TilingSpecification {
            origin_coordinate: [0.0, 0.0].into(),
            tile_size_in_pixels: grid_shape,
        };

        let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![15_u8, 15, 15, 13]).unwrap());

        let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);
        let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());

        let mut raster_props = RasterProperties::default();
        raster_props.set_scale(2.0);
        raster_props.set_offset(1.0);

        let raster_tile = RasterTile2D::new_with_tile_info_and_properties(
            TimeInterval::default(),
            TileInformation {
                global_geo_transform: TestDefault::test_default(),
                global_tile_position: [0, 0].into(),
                tile_size_in_pixels: grid_shape,
            },
            raster.into(),
            raster_props,
        );

        let spatial_resolution = raster_tile.spatial_resolution();

        let mrs = MockRasterSource {
            params: MockRasterSourceParams {
                data: vec![raster_tile],
                result_descriptor: RasterResultDescriptor {
                    data_type: RasterDataType::U8,
                    spatial_reference: SpatialReference::epsg_4326().into(),
                    measurement: Measurement::Unitless,
                    bbox: None,
                    time: None,
                    resolution: Some(spatial_resolution),
                },
            },
        }
        .boxed();

        let slope = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {
            domain: None,
            key: "scale".to_string(),
        });
        let offset = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {
            domain: None,
            key: "offset".to_string(),
        });

        let scaling_mode = ScalingMode::Scale;

        let output_measurement = None;

        let params = RasterScalingParams {
            slope,
            offset,
            output_measurement,
            scaling_mode,
        };

        let op = RasterScaling {
            params,
            sources: SingleRasterSource { raster: mrs },
        }
        .boxed();

        let initialized_op = op.initialize(&ctx).await.unwrap();

        let result_descriptor = initialized_op.result_descriptor();

        assert_eq!(result_descriptor.data_type, RasterDataType::U8);
        assert_eq!(result_descriptor.measurement, Measurement::Unitless);

        let query_processor = initialized_op.query_processor().unwrap();

        let query = geoengine_datatypes::primitives::RasterQueryRectangle {
            spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),
            spatial_resolution: SpatialResolution::one(),
            time_interval: TimeInterval::default(),
        };

        let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {
            panic!("expected TypedRasterQueryProcessor::U8");
        };

        let stream = typed_processor
            .raster_query(query, &query_ctx)
            .await
            .unwrap();

        let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;

        let result_tile = results.as_slice()[0].as_ref().unwrap();

        let result_grid = result_tile.grid_array.clone();

        match result_grid {
            GridOrEmpty2D::Grid(grid) => {
                assert_eq!(grid.shape(), &GridShape::new([2, 2]));

                let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();

                let expected = vec![Some(7), Some(7), Some(7), Some(6)];

                assert_eq!(res, expected);
            }
            GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),
        }
    }
}

1	use crate::engine::{
2	CreateSpan, ExecutionContext, InitializedRasterOperator, Operator, OperatorName,
3	RasterOperator, RasterQueryProcessor, RasterResultDescriptor, SingleRasterSource,
4	TypedRasterQueryProcessor,
5	};
6	use crate::util::Result;
7	use async_trait::async_trait;
8	use futures::{StreamExt, TryStreamExt};
9
10	use geoengine_datatypes::raster::{
11	ElementScaling, ScaleTransformation, ScalingTransformation, UnscaleTransformation,
12	};
13	use geoengine_datatypes::{
14	primitives::Measurement,
15	raster::{Pixel, RasterProperties, RasterPropertiesKey, RasterTile2D},
16	};
17	use num::FromPrimitive;
18	use num_traits::AsPrimitive;
19	use rayon::ThreadPool;
20	use serde::{Deserialize, Serialize};
21	use std::marker::PhantomData;
22	use std::sync::Arc;
23	use tracing::{span, Level};
24
25	#[derive(Debug, Serialize, Deserialize, Clone)]	×
26	#[serde(rename_all = "camelCase")]
27	pub struct RasterScalingParams {
28	slope: PropertiesKeyOrValue,
29	offset: PropertiesKeyOrValue,
30	output_measurement: Option<Measurement>,
31	scaling_mode: ScalingMode,
32	}
33
34	#[derive(Debug, Serialize, Deserialize, Clone, Copy)]	×
35	#[serde(rename_all = "camelCase")]
36	pub enum ScalingMode {
37	Scale,
38	Unscale,
39	}
40
41	#[derive(Debug, Serialize, Deserialize, Clone)]	4✔
42	#[serde(rename_all = "camelCase", tag = "type")]
43	enum PropertiesKeyOrValue {
44	MetadataKey(RasterPropertiesKey),
45	Constant { value: f64 },
46	}
47
48	/// The raster scaling operator scales/unscales the values of a raster by a given scale factor and offset.
49	/// This is done by applying the following formulas to every pixel.
50	/// For unscaling the formula is:
51	///
52	/// `p_new = p_old * slope + offset`
53	///
54	/// For scaling the formula is:
55	///
56	/// `p_new = (p_old - offset) / slope`
57	///
58	/// `p_old` and `p_new` refer to the old and new pixel values,
59	/// The slope and offset values are either properties attached to the input raster or a fixed value.
60	///
61	/// An example for Meteosat Second Generation properties is:
62	///
63	/// - offset: `msg.calibration_offset`
64	/// - slope: `msg.calibration_slope`
65	pub type RasterScaling = Operator<RasterScalingParams, SingleRasterSource>;
66
67	impl OperatorName for RasterScaling {
68	const TYPE_NAME: &'static str = "RasterScaling";
69	}
70
71	pub struct InitializedRasterScalingOperator {
72	slope: PropertiesKeyOrValue,
73	offset: PropertiesKeyOrValue,
74	result_descriptor: RasterResultDescriptor,
75	source: Box<dyn InitializedRasterOperator>,
76	scaling_mode: ScalingMode,
77	}
78
79	#[typetag::serde]	×
80	#[async_trait]
81	impl RasterOperator for RasterScaling {
82	async fn _initialize(	2✔
83	self: Box<Self>,	2✔
84	context: &dyn ExecutionContext,	2✔
85	) -> Result<Box<dyn InitializedRasterOperator>> {	2✔
86	let input = self.sources.raster.initialize(context).await?;	2✔
87	let in_desc = input.result_descriptor();	2✔
88		2✔
89	let out_desc = RasterResultDescriptor {	2✔
90	spatial_reference: in_desc.spatial_reference,	2✔
91	data_type: in_desc.data_type,	2✔
92	measurement: self	2✔
93	.params	2✔
94	.output_measurement	2✔
95	.unwrap_or_else(\|\| in_desc.measurement.clone()),	2✔
96	bbox: in_desc.bbox,	2✔
97	time: in_desc.time,	2✔
98	resolution: in_desc.resolution,	2✔
99	};	2✔
100		2✔
101	let initialized_operator = InitializedRasterScalingOperator {	2✔
102	slope: self.params.slope,	2✔
103	offset: self.params.offset,	2✔
104	result_descriptor: out_desc,	2✔
105	source: input,	2✔
106	scaling_mode: self.params.scaling_mode,	2✔
107	};	2✔
108		2✔
109	Ok(initialized_operator.boxed())	2✔
110	}	4✔
111
112	span_fn!(RasterScaling);	×
113	}
114
115	impl InitializedRasterOperator for InitializedRasterScalingOperator {
116	fn result_descriptor(&self) -> &RasterResultDescriptor {	2✔
117	&self.result_descriptor	2✔
118	}	2✔
119
120	fn query_processor(&self) -> Result<TypedRasterQueryProcessor> {	2✔
121	let slope = self.slope.clone();	2✔
122	let offset = self.offset.clone();	2✔
123	let source = self.source.query_processor()?;	2✔
124	let scaling_mode = self.scaling_mode;	2✔
125
126	let res = match scaling_mode {	2✔
127	ScalingMode::Scale => {
128	call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, ScaleTransformation>(slope, offset, source_proc)) })	1✔
129	}
130	ScalingMode::Unscale => {
131	call_on_generic_raster_processor!(source, source_proc => { TypedRasterQueryProcessor::from(create_boxed_processor::<_,_, UnscaleTransformation>(slope, offset, source_proc)) })	1✔
132	}
133	};
134
135	Ok(res)	2✔
136	}	2✔
137	}
138
139	struct RasterTransformationProcessor<Q, P, S>
140	where
141	Q: RasterQueryProcessor<RasterType = P>,
142	{
143	source: Q,
144	slope: PropertiesKeyOrValue,
145	offset: PropertiesKeyOrValue,
146	_transformation: PhantomData<S>,
147	}
148
149	fn create_boxed_processor<Q, P, S>(	2✔
150	slope: PropertiesKeyOrValue,	2✔
151	offset: PropertiesKeyOrValue,	2✔
152	source: Q,	2✔
153	) -> Box<dyn RasterQueryProcessor<RasterType = P>>	2✔
154	where	2✔
155	Q: RasterQueryProcessor<RasterType = P> + 'static,	2✔
156	P: Pixel + FromPrimitive + 'static + Default,	2✔
157	f64: AsPrimitive<P>,	2✔
158	S: Send + Sync + 'static + ScalingTransformation<P>,	2✔
159	{	2✔
160	RasterTransformationProcessor::<Q, P, S>::create(slope, offset, source).boxed()	2✔
161	}	2✔
162
163	impl<Q, P, S> RasterTransformationProcessor<Q, P, S>
164	where
165	Q: RasterQueryProcessor<RasterType = P> + 'static,
166	P: Pixel + FromPrimitive + 'static + Default,
167	f64: AsPrimitive<P>,
168	S: Send + Sync + 'static + ScalingTransformation<P>,
169	{
170	pub fn create(	2✔
171	slope: PropertiesKeyOrValue,	2✔
172	offset: PropertiesKeyOrValue,	2✔
173	source: Q,	2✔
174	) -> RasterTransformationProcessor<Q, P, S> {	2✔
175	RasterTransformationProcessor {	2✔
176	source,	2✔
177	slope,	2✔
178	offset,	2✔
179	_transformation: PhantomData,	2✔
180	}	2✔
181	}	2✔
182
183	async fn scale_tile_async(	2✔
184	&self,	2✔
185	tile: RasterTile2D<P>,	2✔
186	_pool: Arc<ThreadPool>,	2✔
187	) -> Result<RasterTile2D<P>> {	2✔
188	let offset = Self::prop_value(&self.offset, &tile.properties)?;	2✔
189	let slope = Self::prop_value(&self.slope, &tile.properties)?;	2✔
190
191	let res_tile =	2✔
192	crate::util::spawn_blocking(move \|\| tile.transform_elements::<S>(slope, offset))	2✔
193	.await?;	2✔
194
195	Ok(res_tile)	2✔
196	}	2✔
197
198	fn prop_value(prop_key_or_value: &PropertiesKeyOrValue, props: &RasterProperties) -> Result<P> {	4✔
199	let value = match prop_key_or_value {	4✔
200	PropertiesKeyOrValue::MetadataKey(key) => props.number_property::<P>(key)?,	4✔
201	PropertiesKeyOrValue::Constant { value } => value.as_(),	×
202	};
203	Ok(value)	4✔
204	}	4✔
205	}
206
207	#[async_trait]
208	impl<Q, P, S> RasterQueryProcessor for RasterTransformationProcessor<Q, P, S>
209	where
210	P: Pixel + FromPrimitive + 'static + Default,
211	f64: AsPrimitive<P>,
212	Q: RasterQueryProcessor<RasterType = P> + 'static,
213	S: Send + Sync + 'static + ScalingTransformation<P>,
214	{
215	type RasterType = P;
216
217	async fn raster_query<'a>(	2✔
218	&'a self,	2✔
219	query: geoengine_datatypes::primitives::RasterQueryRectangle,	2✔
220	ctx: &'a dyn crate::engine::QueryContext,	2✔
221	) -> Result<	2✔
222	futures::stream::BoxStream<	2✔
223	'a,	2✔
224	Result<geoengine_datatypes::raster::RasterTile2D<Self::RasterType>>,	2✔
225	>,	2✔
226	> {	2✔
227	let src = self.source.raster_query(query, ctx).await?;	2✔
228	let rs = src.and_then(move \|tile\| self.scale_tile_async(tile, ctx.thread_pool().clone()));	2✔
229	Ok(rs.boxed())	2✔
230	}	4✔
231	}
232
233	#[cfg(test)]
234	mod tests {
235
236	use geoengine_datatypes::{
237	primitives::{SpatialPartition2D, SpatialResolution, TimeInterval},
238	raster::{
239	Grid2D, GridOrEmpty2D, GridShape, MaskedGrid2D, RasterDataType, TileInformation,
240	TilingSpecification,
241	},
242	spatial_reference::SpatialReference,
243	util::test::TestDefault,
244	};
245
246	use crate::{
247	engine::{ChunkByteSize, MockExecutionContext},
248	mock::{MockRasterSource, MockRasterSourceParams},
249	};
250
251	use super::*;
252
253	#[tokio::test]	1✔
254	async fn test_unscale() {	1✔
255	let grid_shape = [2, 2].into();	1✔
256		1✔
257	let tiling_specification = TilingSpecification {	1✔
258	origin_coordinate: [0.0, 0.0].into(),	1✔
259	tile_size_in_pixels: grid_shape,	1✔
260	};	1✔
261		1✔
262	let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![7_u8, 7, 7, 6]).unwrap());	1✔
263		1✔
264	let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);	1✔
265	let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());	1✔
266		1✔
267	let mut raster_props = RasterProperties::default();	1✔
268	raster_props.set_scale(2.0);	1✔
269	raster_props.set_offset(1.0);	1✔
270		1✔
271	let raster_tile = RasterTile2D::new_with_tile_info_and_properties(	1✔
272	TimeInterval::default(),	1✔
273	TileInformation {	1✔
274	global_geo_transform: TestDefault::test_default(),	1✔
275	global_tile_position: [0, 0].into(),	1✔
276	tile_size_in_pixels: grid_shape,	1✔
277	},	1✔
278	raster.into(),	1✔
279	raster_props,	1✔
280	);	1✔
281		1✔
282	let spatial_resolution = raster_tile.spatial_resolution();	1✔
283		1✔
284	let mrs = MockRasterSource {	1✔
285	params: MockRasterSourceParams {	1✔
286	data: vec![raster_tile],	1✔
287	result_descriptor: RasterResultDescriptor {	1✔
288	data_type: RasterDataType::U8,	1✔
289	spatial_reference: SpatialReference::epsg_4326().into(),	1✔
290	measurement: Measurement::Unitless,	1✔
291	bbox: None,	1✔
292	time: None,	1✔
293	resolution: Some(spatial_resolution),	1✔
294	},	1✔
295	},	1✔
296	}	1✔
297	.boxed();	1✔
298		1✔
299	let slope = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {	1✔
300	domain: None,	1✔
301	key: "scale".to_string(),	1✔
302	});	1✔
303	let offset = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {	1✔
304	domain: None,	1✔
305	key: "offset".to_string(),	1✔
306	});	1✔
307		1✔
308	let scaling_mode = ScalingMode::Unscale;	1✔
309		1✔
310	let output_measurement = None;	1✔
311		1✔
312	let op = RasterScaling {	1✔
313	params: RasterScalingParams {	1✔
314	slope,	1✔
315	offset,	1✔
316	output_measurement,	1✔
317	scaling_mode,	1✔
318	},	1✔
319	sources: SingleRasterSource { raster: mrs },	1✔
320	}	1✔
321	.boxed();	1✔
322
323	let initialized_op = op.initialize(&ctx).await.unwrap();	1✔
324		1✔
325	let result_descriptor = initialized_op.result_descriptor();	1✔
326		1✔
327	assert_eq!(result_descriptor.data_type, RasterDataType::U8);	1✔
328	assert_eq!(result_descriptor.measurement, Measurement::Unitless);	1✔
329
330	let query_processor = initialized_op.query_processor().unwrap();	1✔
331		1✔
332	let query = geoengine_datatypes::primitives::RasterQueryRectangle {	1✔
333	spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),	1✔
334	spatial_resolution: SpatialResolution::one(),	1✔
335	time_interval: TimeInterval::default(),	1✔
336	};	1✔
337
338	let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {	1✔
339	panic!("expected TypedRasterQueryProcessor::U8");	×
340	};
341
342	let stream = typed_processor	1✔
343	.raster_query(query, &query_ctx)	1✔
344	.await	×
345	.unwrap();	1✔
346
347	let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;	1✔
348
349	let result_tile = results.as_slice()[0].as_ref().unwrap();	1✔
350		1✔
351	let result_grid = result_tile.grid_array.clone();	1✔
352		1✔
353	match result_grid {	1✔
354	GridOrEmpty2D::Grid(grid) => {	1✔
355	assert_eq!(grid.shape(), &GridShape::new([2, 2]));	1✔
356
357	let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();	1✔
358		1✔
359	let expected = vec![Some(15), Some(15), Some(15), Some(13)];	1✔
360		1✔
361	assert_eq!(res, expected);	1✔
362	}
363	GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),	×
364	}
365	}
366
367	#[tokio::test]	1✔
368	async fn test_scale() {	1✔
369	let grid_shape = [2, 2].into();	1✔
370		1✔
371	let tiling_specification = TilingSpecification {	1✔
372	origin_coordinate: [0.0, 0.0].into(),	1✔
373	tile_size_in_pixels: grid_shape,	1✔
374	};	1✔
375		1✔
376	let raster = MaskedGrid2D::from(Grid2D::new(grid_shape, vec![15_u8, 15, 15, 13]).unwrap());	1✔
377		1✔
378	let ctx = MockExecutionContext::new_with_tiling_spec(tiling_specification);	1✔
379	let query_ctx = ctx.mock_query_context(ChunkByteSize::test_default());	1✔
380		1✔
381	let mut raster_props = RasterProperties::default();	1✔
382	raster_props.set_scale(2.0);	1✔
383	raster_props.set_offset(1.0);	1✔
384		1✔
385	let raster_tile = RasterTile2D::new_with_tile_info_and_properties(	1✔
386	TimeInterval::default(),	1✔
387	TileInformation {	1✔
388	global_geo_transform: TestDefault::test_default(),	1✔
389	global_tile_position: [0, 0].into(),	1✔
390	tile_size_in_pixels: grid_shape,	1✔
391	},	1✔
392	raster.into(),	1✔
393	raster_props,	1✔
394	);	1✔
395		1✔
396	let spatial_resolution = raster_tile.spatial_resolution();	1✔
397		1✔
398	let mrs = MockRasterSource {	1✔
399	params: MockRasterSourceParams {	1✔
400	data: vec![raster_tile],	1✔
401	result_descriptor: RasterResultDescriptor {	1✔
402	data_type: RasterDataType::U8,	1✔
403	spatial_reference: SpatialReference::epsg_4326().into(),	1✔
404	measurement: Measurement::Unitless,	1✔
405	bbox: None,	1✔
406	time: None,	1✔
407	resolution: Some(spatial_resolution),	1✔
408	},	1✔
409	},	1✔
410	}	1✔
411	.boxed();	1✔
412		1✔
413	let slope = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {	1✔
414	domain: None,	1✔
415	key: "scale".to_string(),	1✔
416	});	1✔
417	let offset = PropertiesKeyOrValue::MetadataKey(RasterPropertiesKey {	1✔
418	domain: None,	1✔
419	key: "offset".to_string(),	1✔
420	});	1✔
421		1✔
422	let scaling_mode = ScalingMode::Scale;	1✔
423		1✔
424	let output_measurement = None;	1✔
425		1✔
426	let params = RasterScalingParams {	1✔
427	slope,	1✔
428	offset,	1✔
429	output_measurement,	1✔
430	scaling_mode,	1✔
431	};	1✔
432		1✔
433	let op = RasterScaling {	1✔
434	params,	1✔
435	sources: SingleRasterSource { raster: mrs },	1✔
436	}	1✔
437	.boxed();	1✔
438
439	let initialized_op = op.initialize(&ctx).await.unwrap();	1✔
440		1✔
441	let result_descriptor = initialized_op.result_descriptor();	1✔
442		1✔
443	assert_eq!(result_descriptor.data_type, RasterDataType::U8);	1✔
444	assert_eq!(result_descriptor.measurement, Measurement::Unitless);	1✔
445
446	let query_processor = initialized_op.query_processor().unwrap();	1✔
447		1✔
448	let query = geoengine_datatypes::primitives::RasterQueryRectangle {	1✔
449	spatial_bounds: SpatialPartition2D::new((0., 0.).into(), (2., -2.).into()).unwrap(),	1✔
450	spatial_resolution: SpatialResolution::one(),	1✔
451	time_interval: TimeInterval::default(),	1✔
452	};	1✔
453
454	let TypedRasterQueryProcessor::U8(typed_processor) = query_processor else {	1✔
455	panic!("expected TypedRasterQueryProcessor::U8");	×
456	};
457
458	let stream = typed_processor	1✔
459	.raster_query(query, &query_ctx)	1✔
460	.await	×
461	.unwrap();	1✔
462
463	let results = stream.collect::<Vec<Result<RasterTile2D<u8>>>>().await;	1✔
464
465	let result_tile = results.as_slice()[0].as_ref().unwrap();	1✔
466		1✔
467	let result_grid = result_tile.grid_array.clone();	1✔
468		1✔
469	match result_grid {	1✔
470	GridOrEmpty2D::Grid(grid) => {	1✔
471	assert_eq!(grid.shape(), &GridShape::new([2, 2]));	1✔
472
473	let res = grid.masked_element_deref_iterator().collect::<Vec<_>>();	1✔
474		1✔
475	let expected = vec![Some(7), Some(7), Some(7), Some(6)];	1✔
476		1✔
477	assert_eq!(res, expected);	1✔
478	}
479	GridOrEmpty2D::Empty(_) => panic!("expected GridOrEmpty2D::Grid"),	×
480	}
481	}
482	}

geo-engine / geoengine / 3929938005

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