Add DZI generator scripts and 16-level testgrid (32768×32768)#381
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mattleibow wants to merge 1 commit intomainfrom
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Add DZI generator scripts and 16-level testgrid (32768×32768)#381mattleibow wants to merge 1 commit intomainfrom
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…68×32768) - scripts/generate-dzi.cs: .NET 10 file-based app for generating Deep Zoom images from a source image. Supports --tile-size, --overlap, --format, --quality options. - scripts/generate-testgrid.cs: procedural test-grid DZI generator that creates a 32768×32768 DZI (16 levels, 0-15) tile-by-tile without loading a full source image. Each 256×256 tile is drawn directly from a 64×64 coloured grid formula, keeping memory usage minimal regardless of output resolution. - resources/collections/testgrid/: regenerated at 32768×32768 - 16 levels (0-15), 256px tiles, 1px overlap - 21,853 PNG tiles across all levels - testgrid.dzi updated to Width="32768" Height="32768" Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Consolidating testgrid work into PR #379 (feature/deep-zoom-static-preview) |
mattleibow
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Mar 15, 2026
- Gradient: diagonal warm (peach, 55α) → cool (blue, 55α) tint across full image
- Computed per-tile using image-space coordinates for seamless consistency at all zoom levels
- Color blocks: 1024×1024px (4×4 tiles at max zoom), no borders, pastel palette
- Level labels: 'L{level}' in top-left corner of each tile
- Close PR #381 (testgrid work consolidated here)
- Regenerate all 21,853 tiles
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
Adds two reusable .NET 10 file-based app scripts for working with Deep Zoom Images, and regenerates the testgrid collection at full 16-level resolution.
Scripts
scripts/generate-dzi.csGeneral-purpose DZI tile generator that takes any source image and slices it into a Deep Zoom pyramid.
--tile-size,--overlap,--format(png/jpg),--qualityoptionsdotnet run scripts/generate-dzi.cs -- source.png output/ --tile-size 256 --overlap 1scripts/generate-testgrid.csProcedural test-grid generator — creates a 32768×32768 DZI (16 levels) without a source image. Each tile is drawn directly from a 64×64 coloured grid formula, so memory usage stays tiny even at gigapixel scale.
dotnet run scripts/generate-testgrid.cs(writes toresources/collections/testgrid/)Testgrid
Closes #380 (superseded by this PR which includes both the script and regenerated assets).