Add intensitymode to allow cell intensity values in mesh3d

package.json

@@ -80,7 +80,7 @@
  "gl-heatmap2d": "^1.0.5",
  "gl-line3d": "^1.1.11",
  "gl-mat4": "^1.2.0",
- "gl-mesh3d": "^2.1.3",
+ "gl-mesh3d": "^2.2.0",
  "gl-plot2d": "^1.4.2",
  "gl-plot3d": "^2.3.0",
  "gl-pointcloud2d": "^1.0.2",

src/traces/mesh3d/attributes.js

@@ -144,8 +144,19 @@ module.exports = extendFlat({
  valType: 'data_array',
  editType: 'calc',
  description: [
- 'Sets the vertex intensity values,',
- 'used for plotting fields on meshes'
+ 'Sets the intensity values for vertices or cells',
+ 'as defined by `intensitymode`.',
+ 'It can be used for plotting fields on meshes.'
+ ].join(' ')
+ },
+ intensitymode: {
+ valType: 'enumerated',
+ values: ['vertex', 'cell'],
+ dflt: 'vertex',
+ editType: 'calc',
+ role: 'info',
+ description: [
+ 'Determines the source of `intensity` values.'
  ].join(' ')
  },
 

src/traces/mesh3d/convert.js

@@ -160,8 +160,9 @@ proto.update = function(data) {
  if(data.intensity) {
  var cOpts = extractOpts(data);
  this.color = '#fff';
- config.vertexIntensity = data.intensity;
- config.vertexIntensityBounds = [cOpts.min, cOpts.max];
+ var mode = data.intensitymode;
+ config[mode + 'Intensity'] = data.intensity;
+ config[mode + 'IntensityBounds'] = [cOpts.min, cOpts.max];
  config.colormap = parseColorScale(data);
  } else if(data.vertexcolor) {
  this.color = data.vertexcolor[0];

src/traces/mesh3d/defaults.js

@@ -79,6 +79,7 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
 
  if('intensity' in traceIn) {
  coerce('intensity');
+ coerce('intensitymode');
  colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: '', cLetter: 'c'});
  } else {
  traceOut.showscale = false;