addMorphTargets function
dynamic
addMorphTargets(
- dynamic geometry,
- dynamic targets,
- dynamic parser
Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
@param {BufferGeometry} geometry @param {Array<GLTF.Target>} targets @param {GLTFParser} parser @return {Promise
Implementation
addMorphTargets(geometry, targets, parser) async {
var hasMorphPosition = false;
var hasMorphNormal = false;
var hasMorphColor = false;
for (var i = 0, il = targets.length; i < il; i++) {
var target = targets[i];
if (target["POSITION"] != null) hasMorphPosition = true;
if (target["NORMAL"] != null) hasMorphNormal = true;
if (target["COLOR_0"] != null) hasMorphColor = true;
if (hasMorphPosition && hasMorphNormal && hasMorphColor) break;
}
if (!hasMorphPosition && !hasMorphNormal && !hasMorphColor) return geometry;
List<BufferAttribute> morphPositions = [];
List<BufferAttribute> morphNormals = [];
List<BufferAttribute> morphColors = [];
for (var i = 0, il = targets.length; i < il; i++) {
var target = targets[i];
if (hasMorphPosition) {
var _position = target["POSITION"] != null
? await parser.getDependency('accessor', target["POSITION"])
: geometry.attributes["position"];
morphPositions.add(_position);
}
if (hasMorphNormal) {
var _normal = target["NORMAL"] != null
? await parser.getDependency('accessor', target["NORMAL"])
: geometry.attributes["normal"];
morphNormals.add(_normal);
}
if (hasMorphColor) {
var _color = target["COLOR_0"] != null
? await parser.getDependency('accessor', target["COLOR_0"])
: geometry.attributes["color"];
morphColors.add(_color);
}
}
if (hasMorphPosition) geometry.morphAttributes["position"] = morphPositions;
if (hasMorphNormal) geometry.morphAttributes["normal"] = morphNormals;
if (hasMorphColor) geometry.morphAttributes["color"] = morphColors;
geometry.morphTargetsRelative = true;
return geometry;
}