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Improve performance canvas heatmap#574

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aashish24 merged 17 commits intomasterOpenGeoscience/geojs:masterfrom improve_performance_canvas_heatmapOpenGeoscience/geojs:improve_performance_canvas_heatmapCopy head branch name to clipboardMay 13, 2016

+338-58

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Commits on May 11, 2016

• Using typed array to increase performance

  aashish24

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• Using event data for transformation

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• Fix intermediate transforms and update delays on the heatmap.

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  manthey

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• A minor speed-up can be obtained by directly setting transforms rather than using jQUery's css function. This reduces a bit of jitter when panning a rotated heat map.

  

  manthey

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• Rename origin to gcsOrigin to make it more obvious it isn't in display coordinates.

  

  manthey

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• Reduce number of function calls for a minor speed improvement.

  

  manthey

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• Precompute gcs positions for heatmaps.

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• Loops can be faster than functions.

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• Fix some issues setting max and min intensity.

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  manthey

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• Fixed Endian check

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Commits on May 12, 2016

• Do not use typed array on big-endian systems

  aashish24

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• Simplify _colorize.

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  manthey

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• Remove opacity as a heatmap feature property.

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• Switch to a single var statement.

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• Complete coverage of src/heatmapFeature.js.

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• Add tests for _animatePan.

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Commits on May 13, 2016

• Merge branch 'master' into improve_performance_canvas_heatmap

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