Add a CompositeTile source #16090
Add a CompositeTile source #16090
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📦 Preview the website for this branch here: https://deploy-preview-16090--ol-site.netlify.app/. |
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It looks like you intend to accept reproj tiles in the composite instead of reprojecting composite sources? In that case should the composite projection be the view projection and the tilegrid be |
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Hi @mike-000, thank you for your comment! Ah that's right, intended to accept a reprojected tile as an image. Oh, and I'll take a look at these PRs. |
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Passing the projection from the renderer's |
kikuchan
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Indeed, thank you! |
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Be aware that currently if the requested projection is equivalent to #15988 would change that for a DataTile source if a |
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Yeah, I see. Thank you. |
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Now it includes extended band data, even for canvas layers
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Is this somewhat useful...? 🤔 |
src/ol/source/CompositeTile.js
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| .map((source) => source.getAttributions()) | ||
| .filter(Boolean) | ||
| .map((func) => func(frameState)) | ||
| .join(' / '); |
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Avoid hardcoding a separator. If you push each attribution to an array the css will format it according to any application specific css.
e.g. custom separator
.ol-attribution li:not(:last-child):after {
content: " / ";
}
or separate lines
.ol-attribution li {
display: block;
}
The code in ol/source/Raster may be useful.
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Ah! Thank you!
I'll change it to:
- .map((func) => func(frameState))
- .join(' / ');
+ .flatMap((func) => func(frameState));looks reasonable?
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In the example it looks like the OSM is not interpolated. Is it possible to handle the different interpolate settings of the original sources? |
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I want to composite a tile image (served by OSM, for example) with a floating-point data tile, so that I can access both at the same time via the
bandoperator of WebGL style expressions.This requires multiple textures to be available within a shader at the same time. However, it seems that
ol/DataTileandol/webgl/TileTexturecurrently don't support uploading multiple data types at once.This PR adds support for this functionality.
Additionally, it introduces a new virtual utility source,
ol/source/CompositeTile.This allows tile sources to be combined as if they were a single source, making the data equally accessible via the
bandoperator.