earcut

[dcooley]

The base Polygon uses mapbox's javascript earcut

The C++ code is a header-only and will be exported from decido

Goal

Build a primitive 'TriangleLayer' which bypasses the javascript earcutting and uses pre-cut Type32Array([ ]) (interleaved array) built from the C++ code within R.

TODO

• [ ] interleave mesh.3d object
• [x] polygon.cpp calls interleave::earcut
• [ ] non-extruded polygons use add_triangles
  • [x] binaryStartIndices is the index of each geometry, not each triangle
• [ ] non-extruded && stroked, add also a PathLayer
• [ ] extruded continues to use PolygonLayer in non-binary format?
  • [ ] or through a spatialwidget::create_interleaved() function?
• [x] highlighting each polygon on hover
• [x] tooltip works
• [ ] getElevation prop works
• [ ] change scatterplot_data to match the structure of polygon_data.data.data
• [ ] test the coloured vertices are correct
  • [ ] is the highest yellow and lowest purple?
  • [ ] what happens to the first / last coordinate (is it coloured n-1, or n+1)
• [x] sfheaders list column issue resolved

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• [x] interleave 0.1.1 on CRAN
• [x] geometries 0.2.1 on CRAN
• [x] sfheaders 0.4.2 on CRAN
• [ ] spatialwidget 0.2.4 on CRAN