foam-framework
Version:
MVC metaprogramming framework
88 lines (77 loc) • 2.39 kB
JavaScript
/**
* @license
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CLASS({
package: 'foam.graphics.webgl.matrix',
name: 'StackMatrix4',
extends: 'foam.graphics.webgl.matrix.Matrix4',
properties: [
{
name: 'stack',
type: 'Array[Matrix4]',
help: 'The stack of matrices to multiply.',
preSet: function(old, nu) {
if ( old && old.length ) {
for (var i = 0; i < old.length; ++i) {
//old[i].removeListener(this.matrixChange);
old[i].removeDirectListener(this);
}
}
return nu;
},
postSet: function(old,nu) {
if ( nu && nu.length ) {
for (var i = 0; i < nu.length; ++i) {
//nu[i].addListener(this.matrixChange);
nu[i].addDirectListener(this);
}
}
//this.matrixCache_ = {};
this.reset_();
}
},
{
name: 'temp_',
lazyFactory: function() { return [1,0,0,0, 0,1,0,0, 0,0,1,0, 0,0,0,1]; }
},
],
methods: [
function recalculate_() {
/* Recalculate the matrix, starting from the indicated index */
if ( this.stack.length < 1 ) { return this.SUPER(); } // the identity matrix
var result = this.temp_;
this.copyMatrixInto_(this.stack[0].flat, this.instance_.flat);
for (var i=1; i < this.stack.length; ++i) {
var m = this.stack[i];
if ( ! m.identity ) {
this.multiply(this.instance_.flat, m.flat, result); // combine into result
this.copyMatrixInto_(result, this.instance_.flat); // copy back
}
}
},
],
listeners: [
{
name: 'matrixChange',
code: function(obj, topic) {
if ( topic[1] == 'flat' ) {
//delete this.matrixCache_[obj];
this.reset_();
}
}
}
]
});