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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
function Model(name, mesh)
{
this.name = name;
this.mesh = mesh;
this.camera = null;
}
/*
* Maintains a list of meshes to allow instancing of data
*/
function MeshManager() {
this.contentUrl = "assets_web/mesh/";
this.modelMap = {};
this.readyList = []; // meshes that have data ready
this.meshesLoading = true; // indicates that no meshes have loaded or that they are still loading
this.postMeshLoadCallbackList = [];
this.tempSphere = null;
this.requestCounter = 0;
}
/*
* Pass the scene meshNode stump, loads temp object while real mesh is downloading
*/
MeshManager.prototype.loadMesh = function (meshStump, tempMesh)
{
// if it exists already, return the mesh requested
if ( this.modelMap[meshStump.name] !== undefined )
return this.modelMap[meshStump.name];
meshStump.ready = false;
meshStump.addr = this.contentUrl + meshStump.name + "_mesh.json";
meshStump.ctxID = g_Engine.getContext().renderer.id;
// sets a temp mesh up in place of the final mesh to load
if (!tempMesh)
{
if (this.tempSphere == null)
{
this.tempSphere = makeSphere(g_Engine.getContext().renderer.ctx, 25, 5, 5);
}
tempMesh = this.tempSphere;
}
// add the temp mesh to the map of loaded meshes
this.modelMap[meshStump.name] = tempMesh;
// update the request counter - we now have one more mesh to load
this.requestCounter++;
requestMesh(meshStump);
return null;
};
/*
* Deletes the passed mesh from the manager as well as all renderers
*/
MeshManager.prototype.deleteMesh = function (name)
{
var model = this.modelMap[name];
if (model)
{
g_Engine.ctxMan.forEach(function(context)
{
context.renderer.deletePrimitive(model.primitive);
});
delete this.modelMap[name];
}
};
MeshManager.prototype.getModelByName = function (name)
{
return this.modelMap[name];
};
MeshManager.prototype.getModelNames = function ()
{
var names = [];
for (var index in this.modelMap) {
names.push(this.modelList[index].name);
}
return names;
};
MeshManager.prototype.processMeshData = function () {
var renderer = g_Engine.getContext().renderer;
// loop through meshes and load ready data
for (var index in this.readyList) {
// if item is ready load it
if (this.readyList[index] && this.readyList[index].ready && renderer.id === this.readyList[index].ctxID) {
// pop the item
var model = this.readyList[index];
this.readyList.splice(index, 1);
var primset = new rdgePrimitiveDefinition();
primset.vertexDefinition =
{
// this shows two ways to map this data to an attribute
"vert":{'type':rdgeConstants.VS_ELEMENT_POS, 'bufferIndex':0, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_pos":{'type':rdgeConstants.VS_ELEMENT_POS, 'bufferIndex':0, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"normal":{'type':rdgeConstants.VS_ELEMENT_FLOAT3, 'bufferIndex':1, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_norm":{'type':rdgeConstants.VS_ELEMENT_FLOAT3, 'bufferIndex':1, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_normal":{'type':rdgeConstants.VS_ELEMENT_FLOAT3, 'bufferIndex':1, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"texcoord":{'type':rdgeConstants.VS_ELEMENT_FLOAT2, 'bufferIndex':2, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_texcoord":{'type':rdgeConstants.VS_ELEMENT_FLOAT2, 'bufferIndex':2, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_texcoords":{'type':rdgeConstants.VS_ELEMENT_FLOAT2, 'bufferIndex':2, 'bufferUsage': rdgeConstants.BUFFER_STATIC},
"a_uv":{'type':rdgeConstants.VS_ELEMENT_FLOAT2, 'bufferIndex':2, 'bufferUsage': rdgeConstants.BUFFER_STATIC}
};
primset.bufferStreams =
[
model.root.data.coords,
model.root.data.normals,
model.root.data.uvs
];
primset.streamUsage =
[
rdgeConstants.BUFFER_STATIC,
rdgeConstants.BUFFER_STATIC,
rdgeConstants.BUFFER_STATIC
];
primset.indexUsage = rdgeConstants.BUFFER_STREAM;
primset.indexBuffer = model.root.data.indices;
renderer.createPrimitive( primset );
model.root.primitive = primset;
// generate a bounding box for this mesh
model.root.bbox = new box();
var numCoords = model.root.data.coords.length; var idx = 0;
while (idx < numCoords - 2)
{
var thisCoord = [model.root.data.coords[idx+0], model.root.data.coords[idx+1], model.root.data.coords[idx+2]];
model.root.bbox.addVec3(thisCoord);
idx += 3;
}
this.modelMap[model.root.attribs.name] = model.root;
// now that the model is load reduce the request count
this.requestCounter--;
this.onLoaded(model.root.attribs.name);
//break;
}
}
}
MeshManager.prototype.isReady = function()
{
return this.readyList.length == 0;
}
MeshManager.prototype.addOnLoadedCallback = function (callback)
{
this.postMeshLoadCallbackList.push(callback)
}
MeshManager.prototype.onLoaded = function ( meshName )
{
for (var index = 0 in this.postMeshLoadCallbackList)
{
// call the functions
this.postMeshLoadCallbackList[index].onMeshLoaded(meshName);
}
}
MeshManager.prototype.exportJSON = function ()
{
for(var m in this.modelMap)
{
this.modelMap[m].primitive.built = false;
}
return JSON.stringify(this.modelMap);
}
MeshManager.prototype.importJSON = function ( jsonMeshExport )
{
try
{
var tempModelMap = JSON.parse(jsonMeshExport);
for(var m in tempModelMap)
{
if(!this.modelMap[m])
{
this.modelMap[m] = tempModelMap[m];
}
}
window.console.log("meshes imported");
}catch( e )
{
window.console.error("error importing meshes: " + e.description );
}
}
/*
* global function for the mesh manager to make mesh file requests
*/
function requestMesh(mesh)
{
var request = new XMLHttpRequest();
request.mesh = mesh;
request.onreadystatechange = function () {
if (request.readyState == 4) {
if (request.status == 200 || window.location.href.indexOf("http") == -1) {
var mesh = eval("(" + request.responseText + ")"); //retrieve result as an JavaScript object
mesh.ready = true;
mesh.ctxID = request.mesh.ctxID;
g_meshMan.readyList.push(mesh);
}
else {
alert("An error has occured making the request");
}
}
}
request.open("GET", mesh.addr, true);
request.send(null);
}
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