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glge_collada.js
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glge_collada.js
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/*
GLGE WebGL Graphics Engine
Copyright (c) 2010, Paul Brunt
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of GLGE nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL PAUL BRUNT BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @fileOverview
* @name glge_collada.js
* @author me@paulbrunt.co.uk
*/
if(!GLGE){
var GLGE={};
}
(function(GLGE){
GLGE.ColladaDocuments=[];
/**
* @class Class to represent a collada object
* @augments GLGE.Group
*/
GLGE.Collada=function(){
this.children=[];
};
GLGE.augment(GLGE.Group,GLGE.Collada);
GLGE.Collada.prototype.type=GLGE.G_NODE;
/**
* Gets the absolute path given an import path and the path it's relative to
* @param {string} path the path to get the absolute path for
* @param {string} relativeto the path the supplied path is relativeto
* @returns {string} absolute path
* @private
*/
GLGE.Collada.prototype.getAbsolutePath=function(path,relativeto){
if(path.substr(0,7)=="http://" || path.substr(0,7)=="file://" || path.substr(0,7)=="https://"){
return path;
}
else
{
if(!relativeto){
relativeto=window.location.href;
}
//find the path compoents
var bits=relativeto.split("/");
var domain=bits[2];
var proto=bits[0];
var initpath=[];
for(var i=3;i<bits.length-1;i++){
initpath.push(bits[i]);
}
//relative to domain
if(path.substr(0,1)=="/"){
initpath=[];
}
var locpath=path.split("/");
for(i=0;i<locpath.length;i++){
if(locpath[i]=="..") initpath.pop();
else if(locpath[i]!="") initpath.push(locpath[i]);
}
return proto+"//"+domain+"/"+initpath.join("/");
}
}
/**
* function to get the element with a specified id
* @param {string} id the id of the element
* @private
*/
GLGE.Collada.prototype.getElementById=function(id){
if(!this.idcache){
var tags=this.getElementsByTagName("*");
var attribid;
this.idcache={};
for(var i=0; i<tags.length;i++){
attribid=tags[i].getAttribute("id");
if(attribid!="") this.idcache[attribid]=tags[i];
}
}
return this.idcache[id];
}
/**
* function extracts a javascript array from the document
* @param {DOM Element} node the value to parse
* @private
*/
GLGE.Collada.prototype.parseArray=function(node){
var child=node.firstChild;
var prev="";
var output=[];
var currentArray;
var i;
while(child){
currentArray=(prev+child.nodeValue).replace(/\s+/g," ").replace(/^\s+/g,"").split(" ");
child=child.nextSibling;
if(currentArray[0]=="") currentArray.unshift();
if(child) prev=currentArray.pop();
for(i=0;i<currentArray.length;i++) output.push(currentArray[i]);
}
return output;
};
/**
* loads an collada file from a given url
* @param {DOM Element} node the value to parse
* @param {string} relativeTo optional the path the url is relative to
*/
GLGE.Collada.prototype.setDocument=function(url,relativeTo){
this.url=url;
//use # to determine the is of the asset to extract
if(url.indexOf("#")!=-1){
this.rootId=url.substr(url.indexOf("#")+1);
url=url.substr(0,url.indexOf("#"));
}
if(relativeTo) url=this.getAbsolutePath(url,relativeTo);
this.docURL=url;
if(GLGE.ColladaDocuments[url]){
this.xml=GLGE.ColladaDocuments[url];
}else{
var req = new XMLHttpRequest();
if(req) {
req.overrideMimeType("text/xml")
var docurl=url;
var docObj=this;
req.onreadystatechange = function() {
if(this.readyState == 4)
{
if(this.status == 200 || this.status==0){
this.responseXML.getElementById=docObj.getElementById;
docObj.loaded(docurl,this.responseXML);
}else{
GLGE.error("Error loading Document: "+docurl+" status "+this.status);
}
}
};
req.open("GET", url, true);
req.send("");
}
}
};
/**
* gets data for a given source element
* @param {string} id the id of the source element
* @private
*/
GLGE.Collada.prototype.getSource=function(id){
var element=this.xml.getElementById(id);
if(!element.jsArray){
var value;
if(element.tagName=="vertices"){
value=this.getSource(element.getElementsByTagName("input")[0].getAttribute("source").substr(1));
}else{
var accessor=element.getElementsByTagName("technique_common")[0].getElementsByTagName("accessor")[0];
var sourceArray=this.xml.getElementById(accessor.getAttribute("source").substr(1));
var type=sourceArray.tagName;
value=this.parseArray(sourceArray);
stride=parseInt(accessor.getAttribute("stride"));
offset=parseInt(accessor.getAttribute("offset"));
if(!offset) offset=0;
count=parseInt(accessor.getAttribute("count"));
var params=accessor.getElementsByTagName("param");
var pmask=[];
for(var i=0;i<params.length;i++){if(params[i].hasAttribute("name")) pmask.push({type:params[i].getAttribute("type"),name:params[i].getAttribute("name")}); else pmask.push(false);}
value={array:value,stride:stride,offset:offset,count:count,pmask:pmask,type:type};
}
element.jsArray=value;
}
return element.jsArray;
};
/**
* Creates a new object and added the meshes parse in the geomertry
* @param {string} id id of the geomerty to parse
* @private
*/
GLGE.Collada.prototype.getMeshes=function(id,skeletonData){
var i,n;
var mesh;
var inputs;
var inputArray;
var vertexJoints;
var vertexWeights;
var faces;
var outputData;
var block;
var set;
var rootNode=this.xml.getElementById(id);
var meshNode=rootNode.getElementsByTagName("mesh")[0];
var meshes=[];
//convert polylists to triangles my head hurts now :-(
var polylists=meshNode.getElementsByTagName("polylist");
for(i=0;i<polylists.length;i++){
faces=this.parseArray(polylists[i].getElementsByTagName("p")[0]);
vcount=this.parseArray(polylists[i].getElementsByTagName("vcount")[0]);
var inputcount=polylists[i].getElementsByTagName("input");
var maxoffset=0;
for(n=0;n<inputcount.length;n++) maxoffset=Math.max(maxoffset,inputcount[n].getAttribute("offset"));
var tris=[];
var cnt=0;
for(n=0;n<vcount.length;n++){
for(j=0; j<vcount[n]-2;j++){
for(k=0;k<=maxoffset;k++){
tris.push(faces[cnt+k]);
}
for(k=0;k<=maxoffset;k++){
tris.push(faces[cnt+(maxoffset+1)*(j+1)+k]);
}
for(k=0;k<=maxoffset;k++){
tris.push(faces[cnt+(maxoffset+1)*(j+2)+k]);
}
}
cnt=cnt+(maxoffset+1)*vcount[n];
}
polylists[i].getElementsByTagName("p")[0].data=tris;
}
//create a mesh for each set of faces
var triangles=[];
var tris=meshNode.getElementsByTagName("triangles");
for(i=0;i<polylists.length;i++){triangles.push(polylists[i])};
for(i=0;i<tris.length;i++){triangles.push(tris[i])};
for(i=0;i<triangles.length;i++){
//go though the inputs to get the data layout
inputs=triangles[i].getElementsByTagName("input");
vertexJoints=[];
vertexWeights=[];
inputArray=[];
outputData={};
for(n=0;n<inputs.length;n++){
inputs[n].data=this.getSource(inputs[n].getAttribute("source").substr(1));
block=inputs[n].getAttribute("semantic");
if(block=="TEXCOORD"){
set=inputs[n].getAttribute("set");
if(!set) set=0;
block=block+set;
}
inputs[n].block=block;
outputData[block]=[];
inputArray[inputs[n].getAttribute("offset")]=inputs[n];
}
//get the face data and push the data into the mesh
if(triangles[i].getElementsByTagName("p")[0].data) faces=triangles[i].getElementsByTagName("p")[0].data;
else faces=this.parseArray(triangles[i].getElementsByTagName("p")[0]);
var pcnt;
for(j=0;j<faces.length;j=j+inputArray.length){
for(n=0;n<inputArray.length;n++){
block=inputArray[n].block;
pcnt=0;
for(k=0;k<inputArray[n].data.stride;k++){
if(inputArray[n].data.pmask[k]){
outputData[block].push(inputArray[n].data.array[faces[j+n]*inputArray[n].data.stride+k+inputArray[n].data.offset]);
pcnt++;
}
}
if(skeletonData && block=="VERTEX"){
for(k=0;k<skeletonData.count;k++){
vertexJoints.push(skeletonData.vertexJoints[faces[j+n]*skeletonData.count+k]);
vertexWeights.push(skeletonData.vertexWeight[faces[j+n]*skeletonData.count+k]);
}
}
//account for 1D and 2D
if(block=="VERTEX" && pcnt==1) outputData[block].push(0);
if(block=="VERTEX" && pcnt==2) outputData[block].push(0);
//we can't handle 3d texcoords at the moment so try two
if(block=="TEXCOORD0" && pcnt==3) outputData[block].pop();
if(block=="TEXCOORD1" && pcnt==3) outputData[block].pop();
}
}
//create faces array
faces=[];
for(n=0;n<outputData.VERTEX.length/3;n++) faces.push(n);
//create mesh
var trimesh=new GLGE.Mesh();
trimesh.setPositions(outputData.VERTEX);
trimesh.setNormals(outputData.NORMAL);
if(outputData.TEXCOORD0) trimesh.setUV(outputData.TEXCOORD0);
if(outputData.TEXCOORD1) trimesh.setUV2(outputData.TEXCOORD1);
if(skeletonData){
trimesh.setJoints(skeletonData.joints);
trimesh.setInvBindMatrix(skeletonData.inverseBindMatrix);
trimesh.setVertexJoints(vertexJoints,skeletonData.count);
trimesh.setVertexWeights(vertexWeights,skeletonData.count);
}
trimesh.setFaces(faces);
trimesh.matName=triangles[i].getAttribute("material");
meshes.push(trimesh);
}
return meshes;
};
/**
* Gets the float4 parameter for a shader
* @private
*/
GLGE.Collada.prototype.getFloat4=function(profile,sid){
// MCB: it's possible for newparam to be in effect scope
var params=profile.getElementsByTagName("newparam");
for(var i=0;i<params.length;i++){
if(params[i].getAttribute("sid")==sid){
return params[i].getElementsByTagName("float4")[0].firstChild.nodeValue;
break;
}
}
return null;
}
/**
* Gets the float parameter for a shader
* @private
*/
GLGE.Collada.prototype.getFloat=function(profile,sid){
// MCB: it's possible for newparam to be in effect scope
var params=profile.getElementsByTagName("newparam");
for(var i=0;i<params.length;i++){
if(params[i].getAttribute("sid")==sid){
return params[i].getElementsByTagName("float")[0].firstChild.nodeValue;
break;
}
}
return null;
}
/**
* Gets the sampler for a texture
* @private
*/
GLGE.Collada.prototype.getSampler=function(profile,sid){
// MCB: it's possible for newparam to be in effect scope
var params=profile.getElementsByTagName("newparam");
for(var i=0;i<params.length;i++){
if(params[i].getAttribute("sid")==sid){
//only do 2d atm.
return params[i].getElementsByTagName("sampler2D")[0].getElementsByTagName("source")[0].firstChild.nodeValue;
break;
}
}
return null;
}
/**
* Gets the surface for a texture
* @private
*/
GLGE.Collada.prototype.getSurface=function(profile,sid){
// MCB: it's possible for newparam to be in effect scope
var params=profile.getElementsByTagName("newparam");
for(var i=0;i<params.length;i++){
if(params[i].getAttribute("sid")==sid){
return params[i].getElementsByTagName("surface")[0].getElementsByTagName("init_from")[0].firstChild.nodeValue;
break;
}
}
return null;
}
/**
* Gets the the collada image location
* @private
*/
GLGE.Collada.prototype.getImage=function(id){
var image=this.xml.getElementById(id);
return this.getAbsolutePath(image.getElementsByTagName("init_from")[0].firstChild.nodeValue,this.docURL);
}
/**
* creates a material layer
* @private
*/
GLGE.Collada.prototype.createMaterialLayer=function(node,material,common,mapto){
var textureImage;
var imageid=this.getSurface(common,this.getSampler(common,node.getAttribute("texture")));
textureImage=this.getImage(imageid);
var texture=new GLGE.Texture();
texture.setSrc(textureImage);
material.addTexture(texture);
var layer=new GLGE.MaterialLayer();
layer.setTexture(texture);
layer.setMapto(mapto);
layer.setMapinput(GLGE.UV1);
if(node.getElementsByTagName("blend_mode")[0]) var blend=node.getElementsByTagName("blend_mode")[0].firstChild.nodeValue;
if(blend=="MULTIPLY") layer.setBlendMode(GLGE.BL_MUL);
material.addMaterialLayer(layer);
}
/**
* Gets the sampler for a texture
* @param {string} id the id or the material element
* @private
*/
GLGE.Collada.prototype.getMaterial=function(id){
var materialNode=this.xml.getElementById(id);
var effectid=materialNode.getElementsByTagName("instance_effect")[0].getAttribute("url").substr(1);
var effect=this.xml.getElementById(effectid);
var common=effect.getElementsByTagName("profile_COMMON")[0];
//glge only supports one technique currently so try and match as best we can
var technique=common.getElementsByTagName("technique")[0];
var returnMaterial=new GLGE.Material();
returnMaterial.setSpecular(0);
var child;
var color;
//do diffuse color
var diffuse=technique.getElementsByTagName("diffuse");
if(diffuse.length>0){
child=diffuse[0].firstChild;
do{
switch(child.tagName){
case "color":
color=child.firstChild.nodeValue.split(" ");
returnMaterial.setColor({r:color[0],g:color[1],b:color[2]});
break;
case "param":
color=this.getFloat4(common,child.getAttribute("ref")).split(" ");
returnMaterial.setColor({r:color[0],g:color[1],b:color[2]});
break;
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_COLOR);
break;
}
}while(child=child.nextSibling);
}
var bump=technique.getElementsByTagName("bump");
if(bump.length>0){
child=bump[0].firstChild;
do{
switch(child.tagName){
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_NOR);
break;
}
}while(child=child.nextSibling);
}
//do shininess
var shininess=technique.getElementsByTagName("shininess");
if(shininess.length>0){
returnMaterial.setSpecular(1);
child=technique.getElementsByTagName("shininess")[0].firstChild;
do{
switch(child.tagName){
case "float":
if(parseFloat(child.firstChild.nodeValue)>1) returnMaterial.setShininess(parseFloat(child.firstChild.nodeValue));
else returnMaterial.setShininess(parseFloat(child.firstChild.nodeValue)*128);
break;
case "param":
var value=parseFloat(this.getFloat(common,child.getAttribute("ref")));
if(value>1) returnMaterial.setShininess(value);
else returnMaterial.setShininess(value*128);
break;
// MCB: texture is invalid here. should remove this case.
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_SHINE);
break;
}
}while(child=child.nextSibling);
}
//do specular color
var specular=technique.getElementsByTagName("specular");
if(specular.length>0){
returnMaterial.setSpecular(1);
child=specular[0].firstChild;
do{
switch(child.tagName){
case "color":
color=child.firstChild.nodeValue.split(" ");
returnMaterial.setSpecularColor({r:color[0],g:color[1],b:color[2]});
break;
case "param":
color=this.getFloat4(common,child.getAttribute("ref")).split(" ");
returnMaterial.setSpecularColor({r:color[0],g:color[1],b:color[2]});
break;
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_SPECCOLOR);
break;
}
}while(child=child.nextSibling);
}
//do reflectivity
/*
var reflectivity=technique.getElementsByTagName("reflectivity");
if(reflectivity.length>0){
child=reflectivity[0].firstChild;
do{
switch(child.tagName){
case "float":
//returnMaterial.setReflectivity(parseFloat(child.firstChild.nodeValue))
break;
case "param":
//returnMaterial.setReflectivity(parseFloat(this.getFloat(common,child.getAttribute("ref"))));
break;
// MCB: texture is invalid here. should remove this case.
case "texture":
var imageid=this.getSurface(common,this.getSampler(common,child.getAttribute("texture")));
textureImage=this.getImage(imageid);
var texture=new GLGE.Texture(textureImage);
returnMaterial.addTexture(texture);
returnMaterial.addMaterialLayer(new GLGE.MaterialLayer(texture,GLGE.M_REFLECT,GLGE.UV1));
break;
}
}while(child=child.nextSibling);
}*/
//do emission color
var emission=technique.getElementsByTagName("emission");
if(emission.length>0){
child=emission[0].firstChild;
do{
switch(child.tagName){
case "color":
color=child.firstChild.nodeValue.split(" ");
returnMaterial.setEmit(color[0]);
break;
case "param":
color=this.getFloat4(common,child.getAttribute("ref")).split(" ");
returnMaterial.setEmit(color[0]);
break;
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_EMIT);
break;
}
}while(child=child.nextSibling);
}
//do reflective color
var reflective=technique.getElementsByTagName("reflective");
if(reflective.length>0){
child=reflective[0].firstChild;
do{
switch(child.tagName){
case "color":
color=child.firstChild.nodeValue.split(" ");
//TODO returnMaterial.setReflectiveColor({r:color[0],g:color[1],b:color[2]});
break;
case "param":
color=this.getFloat4(common,child.getAttribute("ref")).split(" ");
//TODO returnMaterial.setReflectiveColor({r:color[0],g:color[1],b:color[2]});
break;
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_REFLECT);
break;
}
}while(child=child.nextSibling);
}
//do transparency
var transparency=technique.getElementsByTagName("transparency");
if(transparency.length>0){
child=transparency[0].firstChild;
do{
switch(child.tagName){
case "float":
//TODO returnMaterial.setTransparency(parseFloat(child.firstChild.nodeValue))
break;
case "param":
//TODO returnMaterial.setTransparency(parseFloat(this.getFloat(common,child.getAttribute("ref"))));
break;
}
}while(child=child.nextSibling);
}
//do transparent color
var transparent=technique.getElementsByTagName("transparent");
if(transparent.length>0){
var opaque=transparent[0].getAttribute("opaque");
if(!opaque) opaque="A_ONE"; // schema default
child=transparent[0].firstChild;
do{
switch(child.tagName){
// MCB: float is invalid here. should remove this case.
case "float":
var alpha=parseFloat(child.firstChild.nodeValue);
if(alpha<1){
returnMaterial.setAlpha(parseFloat(child.firstChild.nodeValue));
returnMaterial.trans=true;
}
break;
case "color":
color=child.firstChild.nodeValue.split(" ");
var alpha=this.getMaterialAlpha(color,opaque,1);
//TODO var alpha=this.getMaterialAlpha(color,opaque,returnMaterial.getTransparency());
if(alpha<1){
returnMaterial.setAlpha(alpha);
returnMaterial.trans=true;
}
break;
case "param":
color=this.getFloat4(common,child.getAttribute("ref")).split(" ");
var alpha=this.getMaterialAlpha(color,opaque,1);
//TODO var alpha=this.getMaterialAlpha(color,opaque,returnMaterial.getTransparency());
if(alpha<1){
returnMaterial.setAlpha(alpha);
returnMaterial.trans=true;
}
break;
// MCB: this case assumes opaque="A_ONE" and transparency="1.0"
case "texture":
this.createMaterialLayer(child,returnMaterial,common,GLGE.M_ALPHA);
returnMaterial.trans=true;
break;
}
}while(child=child.nextSibling);
}
return returnMaterial;
};
/**
* gets the material alpha from the transparent color
* @param {color} the transparent color
* @param {opaque} the transparent color opaque attribute value
* @param {transparency} the transparency value
* @private
*/
GLGE.Collada.prototype.getMaterialAlpha=function(color,opaque,transparency){
var returnAlpha;
switch(opaque){
case "A_ONE":
returnAlpha=parseFloat(color[3])*transparency;
break;
case "A_ZERO":
returnAlpha=1-parseFloat(color[3])*transparency;
break;
case "RGB_ONE":
var luminance=parseFloat(color[0])*0.212671
+parseFloat(color[1])*0.715160
+parseFloat(color[2])*0.072169;
returnAlpha=luminance*transparency;
break;
case "RGB_ZERO":
var luminance=parseFloat(color[0])*0.212671
+parseFloat(color[1])*0.715160
+parseFloat(color[2])*0.072169;
returnAlpha=1-luminance*transparency;
break;
}
return returnAlpha;
};
/**
* creates a GLGE Object from a given instance Geomertry
* @param {node} node the element to parse
* @private
*/
GLGE.Collada.prototype.getInstanceGeometry=function(node){
var meshes=this.getMeshes(node.getAttribute("url").substr(1));
var materials=node.getElementsByTagName("instance_material");
var objMaterials={};
for(var i=0; i<materials.length;i++){
mat=this.getMaterial(materials[i].getAttribute("target").substr(1));
objMaterials[materials[i].getAttribute("symbol")]=mat;
}
//create GLGE object
var obj=new GLGE.Object();
for(i=0; i<meshes.length;i++){
if(objMaterials[meshes[i].matName].trans){
obj.setZtransparent(true);
}
var multimat=new GLGE.MultiMaterial();
multimat.setMesh(meshes[i]);
multimat.setMaterial(objMaterials[meshes[i].matName]);
obj.addMultiMaterial(multimat);
}
return obj;
}
/**
* creates an array of animation curves
* @param {string} id the id of the sampler
* @private
*/
GLGE.Collada.prototype.getAnimationSampler=function(id){
var frameRate=30;
var inputs=this.xml.getElementById(id).getElementsByTagName("input");
var outputData={};
var inputsArray=[];
var data,block;
for(var i=0;i<inputs.length;i++){
//modify get source to return the array and element length
data=this.getSource(inputs[i].getAttribute("source").substr(1));
block=inputs[i].getAttribute("semantic");
inputsArray.push({block:block,data:data});
}
for(n=0;n<inputsArray.length;n++){
block=inputsArray[n].block;
outputData[block]={};
outputData[block].data=[];
outputData[block].names=[];
for(k=0;k<inputsArray[n].data.array.length;k=k+inputsArray[n].data.stride){
pcnt=0;
for(i=0;i<inputsArray[n].data.pmask.length;i++){
if(inputsArray[n].data.pmask[i]){
outputData[block].names.push(inputsArray[n].data.pmask[i].name);
if(inputsArray[n].data.pmask[i].type=="float4x4"){
outputData[block].stride=16;
for(j=0;j<16;j++){
outputData[block].data.push(inputsArray[n].data.array[j+k+inputsArray[n].data.offset+i]);
}
}else{
pcnt++;
outputData[block].stride=pcnt;
outputData[block].data.push(inputsArray[n].data.array[k+inputsArray[n].data.offset+i]);
}
}
}
}
}
//this should return an array of curves
var point;
var anim=[];
for(var i=0; i<outputData["OUTPUT"].stride;i++){
anim.push(new GLGE.AnimationCurve());
}
for(var i=0;i<outputData["INPUT"].data.length;i++){
for(var j=0;j<outputData["OUTPUT"].stride;j++){
anim[j].name=outputData["OUTPUT"].names[j];
if(outputData["INTERPOLATION"].data[i]=="LINEAR"){
point=new GLGE.LinearPoint();
point.setX(outputData["INPUT"].data[i]*frameRate);
point.setY(outputData["OUTPUT"].data[i*outputData["OUTPUT"].stride+j]);
anim[j].addPoint(point);
}
if(outputData["INTERPOLATION"].data[i]=="BEZIER"){
point=new GLGE.BezTriple();
point.setX1(outputData["IN_TANGENT"].data[(i*outputData["OUTPUT"].stride+j)*2]*frameRate);
point.setY1(outputData["IN_TANGENT"].data[(i*outputData["OUTPUT"].stride+j)*2+1]);
point.setX2(Math.round(outputData["INPUT"].data[i]*frameRate));
point.setY2(outputData["OUTPUT"].data[i*outputData["OUTPUT"].stride+j]);
point.setX3(outputData["OUT_TANGENT"].data[(i*outputData["OUTPUT"].stride+j)*2]*frameRate);
point.setY3(outputData["OUT_TANGENT"].data[(i*outputData["OUTPUT"].stride+j)*2+1]);
anim[j].addPoint(point);
}
}
}
return anim;
}
/**
* Gets the animation vector for a node
* @param {object} channels the animation channels effecting this node
* @private
*/
GLGE.Collada.prototype.getAnimationVector=function(channels){
//I can see no nice way to map a seuqnce of animated transforms onto a single transform
//so instead calc transform for each frame then use quat and trans then linear between them
var maxFrame=0;
//get the initial state of the target
var targetNode=this.xml.getElementById(channels[0].target[0]);
//get the initial transforms for the target node
var child=targetNode.firstChild;
var transforms=[];
var sids={};
do{
switch(child.tagName){
case "matrix":
case "translate":
case "rotate":
case "scale":
def={type:child.tagName,data:this.parseArray(child),animations:[]};
if(child.hasAttribute("sid")) sids[child.getAttribute("sid")]=def;
transforms.push(def);
break;
}
child=child.nextSibling
}while(child);
//loop though the animation channels effecting this node
var anim={};
for(var i=0;i<channels.length;i++){
var animcurves=this.getAnimationSampler(channels[i].source);
for(j=0;j<animcurves.length;j++){
maxFrame=Math.max(maxFrame,animcurves[j].keyFrames[animcurves[j].keyFrames.length-1].x);
}
var target=channels[i].target;
if(target[1].indexOf(".")!=-1){
var splittarget=target[1].split(".");
switch(splittarget[1]){
case "X":
sids[splittarget[0]].animations[0]=animcurves[0];
break;
case "Y":
sids[splittarget[0]].animations[1]=animcurves[0];
break;
case "Z":
sids[splittarget[0]].animations[2]=animcurves[0];
break;
case "ANGLE":
sids[splittarget[0]].animations[3]=animcurves[0];
break;
}
}else if(target[1].indexOf("(")!=-1){
//do bracket type
var idx=target[1].split("(");
sidtarget=idx.shift();
if(idx.length>1) idx=parseInt(idx[0])+4*parseInt(idx[1]);
else idx=parseInt(idx[0]);
sids[sidtarget].animations[idx]=animcurves[0];
}else{
//do all
for(var j=0;j<animcurves.length;j++){
switch(animcurves[j].name){
case "X":
sids[target[1]].animations[0]=animcurves[j];
break;
case "Y":
sids[target[1]].animations[1]=animcurves[j];
break;
case "Z":
sids[target[1]].animations[2]=animcurves[j];
break;
case "ANGLE":
sids[target[1]].animations[3]=animcurves[j];
break;
default:
sids[target[1]].animations[j]=animcurves[j];
break;
}
}
}
}
var animVector=new GLGE.AnimationVector();
animVector.setFrames(maxFrame);
var quatxcurve=new GLGE.AnimationCurve();
var quatycurve=new GLGE.AnimationCurve();
var quatzcurve=new GLGE.AnimationCurve();
var quatwcurve=new GLGE.AnimationCurve();
var locxcurve=new GLGE.AnimationCurve();
var locycurve=new GLGE.AnimationCurve();
var loczcurve=new GLGE.AnimationCurve();
animVector.addCurve("QuatX",quatxcurve);
animVector.addCurve("QuatY",quatycurve);
animVector.addCurve("QuatZ",quatzcurve);
animVector.addCurve("QuatW",quatwcurve);
animVector.addCurve("LocX",locxcurve);
animVector.addCurve("LocY",locycurve);
animVector.addCurve("LocZ",loczcurve);
var lastQuat=null;
for(var frame=0; frame<maxFrame;frame++){
var matrix=GLGE.identMatrix();
for(var i=0;i<transforms.length;i++){
//get full transform for this frame
switch(transforms[i].type){
case "matrix":
var matrix_array=[
(transforms[i].animations[0] ? transforms[i].animations[0].getValue(frame) : transforms[i].data[0]),
(transforms[i].animations[1] ? transforms[i].animations[1].getValue(frame) : transforms[i].data[1]),
(transforms[i].animations[2] ? transforms[i].animations[2].getValue(frame) : transforms[i].data[2]),
(transforms[i].animations[3] ? transforms[i].animations[3].getValue(frame) : transforms[i].data[3]),
(transforms[i].animations[4] ? transforms[i].animations[4].getValue(frame) : transforms[i].data[4]),
(transforms[i].animations[5] ? transforms[i].animations[5].getValue(frame) : transforms[i].data[5]),
(transforms[i].animations[6] ? transforms[i].animations[6].getValue(frame) : transforms[i].data[6]),
(transforms[i].animations[7] ? transforms[i].animations[7].getValue(frame) : transforms[i].data[7]),
(transforms[i].animations[8] ? transforms[i].animations[8].getValue(frame) : transforms[i].data[8]),
(transforms[i].animations[9] ? transforms[i].animations[9].getValue(frame) : transforms[i].data[9]),
(transforms[i].animations[10] ? transforms[i].animations[10].getValue(frame) : transforms[i].data[10]),
(transforms[i].animations[11] ? transforms[i].animations[11].getValue(frame) : transforms[i].data[11]),
(transforms[i].animations[12] ? transforms[i].animations[12].getValue(frame) : transforms[i].data[12]),
(transforms[i].animations[13] ? transforms[i].animations[13].getValue(frame) : transforms[i].data[13]),
(transforms[i].animations[14] ? transforms[i].animations[14].getValue(frame) : transforms[i].data[14]),
(transforms[i].animations[15] ? transforms[i].animations[15].getValue(frame) : transforms[i].data[15])
];
matrix=GLGE.mulMat4(matrix,GLGE.Mat4(matrix_array));
break;
case "rotate":
var rotate_array=[
(transforms[i].animations[0] ? transforms[i].animations[0].getValue(frame) : transforms[i].data[0]),
(transforms[i].animations[1] ? transforms[i].animations[1].getValue(frame) : transforms[i].data[1]),
(transforms[i].animations[2] ? transforms[i].animations[2].getValue(frame) : transforms[i].data[2]),
(transforms[i].animations[3] ? transforms[i].animations[3].getValue(frame) : transforms[i].data[3])
];
matrix=GLGE.mulMat4(matrix,GLGE.angleAxis(rotate_array[3]*0.017453278,[ rotate_array[0], rotate_array[1], rotate_array[2]]));
break;
case "translate":
var translate_array=[
(transforms[i].animations[0] ? transforms[i].animations[0].getValue(frame) : transforms[i].data[0]),
(transforms[i].animations[1] ? transforms[i].animations[1].getValue(frame) : transforms[i].data[1]),
(transforms[i].animations[2] ? transforms[i].animations[2].getValue(frame) : transforms[i].data[2])
];
matrix=GLGE.mulMat4(matrix,GLGE.translateMatrix(translate_array[0],translate_array[1],translate_array[2]));
break;
case "scale":
var scale_array=[
(transforms[i].animations[0] ? transforms[i].animations[0].getValue(frame) : transforms[i].data[0]),
(transforms[i].animations[1] ? transforms[i].animations[1].getValue(frame) : transforms[i].data[1]),
(transforms[i].animations[2] ? transforms[i].animations[2].getValue(frame) : transforms[i].data[2])
];
matrix=GLGE.mulMat4(matrix,GLGE.scaleMatrix(scale_array[0],scale_array[1],scale_array[2]));
break;
}
}
scale=GLGE.matrix2Scale(matrix);
matrix=GLGE.mulMat4(matrix,GLGE.scaleMatrix(1/scale[0],1/scale[1],1/scale[2]));
//convert to quat and trans and add to the curve
quat=GLGE.rotationMatrix2Quat(matrix);
if(lastQuat){
//make sure we are in the same range as previous!
if(lastQuat[0]*quat[0]+lastQuat[1]*quat[1]+lastQuat[2]*quat[2]+lastQuat[3]*quat[3]<0){
quat[0]=quat[0]*-1;
quat[1]=quat[1]*-1;
quat[2]=quat[2]*-1;
quat[3]=quat[3]*-1;
}
}
lastQuat=quat;
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(quat[0]);
quatxcurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(quat[1]);
quatycurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(quat[2]);
quatzcurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(quat[3]);
quatwcurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(matrix.e(1,4));
locxcurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(matrix.e(2,4));
locycurve.addPoint(point);
point=new GLGE.LinearPoint();
point.setX(frame);
point.setY(matrix.e(3,4));
loczcurve.addPoint(point);
}
//return the animation vector
targetNode.GLGEObject.setAnimation(animVector);
targetNode.GLGEObject.animationStart=0;
targetNode.GLGEObject.setFrameRate(30);
return animVector;
}
/**
* creates an action form the intially animation within the document
* @private
*/
GLGE.Collada.prototype.getAnimations=function(){
var action=new GLGE.Action();
var animations=this.xml.getElementsByTagName("animation");
var channels,target,source;
var channelGroups={};
for(var i=0;i<animations.length;i++){
channels=animations[i].getElementsByTagName("channel");
for(var j=0;j<channels.length;j++){
var target=channels[j].getAttribute("target").split("/");
source=channels[j].getAttribute("source").substr(1);
if(!channelGroups[target[0]]) channelGroups[target[0]]=[];
channelGroups[target[0]].push({source:source,target:target});
}
}
for(target in channelGroups){
//create an animation vector for this target
this.getAnimationVector(channelGroups[target]);