1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5'use strict'; 6 7base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/common.js'); 8base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/mat2d.js'); 9base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/mat4.js'); 10base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/vec2.js'); 11base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/vec3.js'); 12base.requireRawScript('../third_party/gl-matrix/src/gl-matrix/vec4.js'); 13 14base.exportTo('base', function() { 15 var tmp_vec2 = vec2.create(); 16 var tmp_vec2b = vec2.create(); 17 var tmp_vec4 = vec4.create(); 18 var tmp_mat2d = mat2d.create(); 19 20 vec2.createFromArray = function(arr) { 21 if (arr.length != 2) 22 throw new Error('Should be length 2'); 23 var v = vec2.create(); 24 vec2.set(v, arr[0], arr[1]); 25 return v; 26 }; 27 28 vec2.createXY = function(x, y) { 29 var v = vec2.create(); 30 vec2.set(v, x, y); 31 return v; 32 }; 33 34 vec2.toString = function(a) { 35 return '[' + a[0] + ', ' + a[1] + ']'; 36 }; 37 38 vec2.addTwoScaledUnitVectors = function(out, u1, scale1, u2, scale2) { 39 // out = u1 * scale1 + u2 * scale2 40 vec2.scale(tmp_vec2, u1, scale1); 41 vec2.scale(tmp_vec2b, u2, scale2); 42 vec2.add(out, tmp_vec2, tmp_vec2b); 43 } 44 45 vec3.createXYZ = function(x, y, z) { 46 var v = vec3.create(); 47 vec3.set(v, x, y, z); 48 return v; 49 }; 50 51 vec3.toString = function(a) { 52 return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')'; 53 } 54 55 mat2d.translateXY = function(out, x, y) { 56 vec2.set(tmp_vec2, x, y); 57 mat2d.translate(out, out, tmp_vec2); 58 } 59 60 mat2d.scaleXY = function(out, x, y) { 61 vec2.set(tmp_vec2, x, y); 62 mat2d.scale(out, out, tmp_vec2); 63 } 64 65 vec4.unitize = function(out, a) { 66 out[0] = a[0] / a[3]; 67 out[1] = a[1] / a[3]; 68 out[2] = a[2] / a[3]; 69 out[3] = 1; 70 return out; 71 } 72 73 vec2.copyFromVec4 = function(out, a) { 74 vec4.unitize(tmp_vec4, a); 75 vec2.copy(out, tmp_vec4); 76 } 77 78 return {}; 79}); 80