setAttribute works on FloatVertexAttribute

[YuanxiangFranck]

Fix to allow the users to update the values in FloatVertexAttribute with setAttribute.
I changed the following geometries :
IndexedFaceSet, IndexedQuadSet, IndexedTriangleSet, IndexedTriangleStripSet, QuadSet, TriangleSet,

Note : For the IndexedFaceSet I did some code cleaning (eebe316),
In the triangulation of the faces the case 2 and case 3 was almost identical, I fused the two cases.

[andreasplesch]

I see. But the name of the attribute is not provided after an underscore ("attrib_temperature") but only in the name field of the attrib child node.

[YuanxiangFranck]

The name is given during the call of FiledChanged on the FloatVertexAttribute element
then the FloatVertexAttribute call the fieldChanged from IndexedFaceSet (the code above) with attrib__name_
see : 16fefd1

fieldChanged: function (fieldName) {
                 var that = this;
                 if (fieldName == "value" ||  fieldName == "numComponents") {
                     Array.forEach(this._parentNodes, function (node) {
                         node.fieldChanged("attrib_"+that._vf.name);
                     });
                 }
             }

[andreasplesch]

I see. While that probably works. I do not think the node.fieldChanged() function is intended to be reused for internal purposes like this. Why not make a new function updateAttrib(name) or in IndexedFaceSet.js (and all possible parentNodes of FloatVertexAttribute) ? Or do the update right here ?

[YuanxiangFranck]

The idea of the new function updateAttrib(name) is not bad, it can be similar to the handleAttibs in X3domComposedGeometryNode.
The only problem is in IFS, I cannot imagine a (proper) way to know which attribute needs update.
The ugly solution is to save in the node the name of the modified attribute (in _vf for exemple).

[andreasplesch]

Well, the name in node.updateAttrib(name) would have the name of the changed attribute, no ?

[YuanxiangFranck]

if you call node.updateAttrib in the IFS, the only information given is FieldChanged("attribs").
A solution would be to write the function node.updateAttrib(name) in FloatVertexAttribute.js, and call it before (or after) the call of FieldChanged on IndexedFaceSet.

[andreasplesch]

This assumes that you have attrib fields with names like "attrib_temperate" in containerfield ?

[YuanxiangFranck]

Let's assume the following element :

<FloatVertexAttribute id="temp" name="temperate" numCompenents="1" value="...."><FloatVertexAttribute>

when temp.setAttribute("value", "....") is called :
1- FieldChanged (FloatVertexAttribute) is called with "value" as filedName
then it call the FieldChanged (parent node : IndexedFaceSet for exemple)
2- FieldChanged (IndexedFaceSet) is called with "attrib_temperate" as FieldName
That is why I test FieldName.statsWith(""attrib_), then get the name using FieldName.split(7)

This allow to avoid useless computation time by updating all the attributes.