diff options
Diffstat (limited to 'js/helper-classes/3D/math-utils.js')
-rwxr-xr-x | js/helper-classes/3D/math-utils.js | 282 |
1 files changed, 142 insertions, 140 deletions
diff --git a/js/helper-classes/3D/math-utils.js b/js/helper-classes/3D/math-utils.js index 8a9be4b5..977b9fe4 100755 --- a/js/helper-classes/3D/math-utils.js +++ b/js/helper-classes/3D/math-utils.js | |||
@@ -1,24 +1,25 @@ | |||
1 | /* <copyright> | 1 | /* <copyright> |
2 | Copyright (c) 2012, Motorola Mobility, Inc | 2 | Copyright (c) 2012, Motorola Mobility LLC. |
3 | All Rights Reserved. | 3 | All Rights Reserved. |
4 | BSD License. | ||
5 | 4 | ||
6 | Redistribution and use in source and binary forms, with or without | 5 | Redistribution and use in source and binary forms, with or without |
7 | modification, are permitted provided that the following conditions are met: | 6 | modification, are permitted provided that the following conditions are met: |
8 | 7 | ||
9 | - Redistributions of source code must retain the above copyright notice, | 8 | * Redistributions of source code must retain the above copyright notice, |
10 | this list of conditions and the following disclaimer. | 9 | this list of conditions and the following disclaimer. |
11 | - Redistributions in binary form must reproduce the above copyright | 10 | |
12 | notice, this list of conditions and the following disclaimer in the | 11 | * Redistributions in binary form must reproduce the above copyright notice, |
13 | documentation and/or other materials provided with the distribution. | 12 | this list of conditions and the following disclaimer in the documentation |
14 | - Neither the name of Motorola Mobility nor the names of its contributors | 13 | and/or other materials provided with the distribution. |
15 | may be used to endorse or promote products derived from this software | 14 | |
16 | without specific prior written permission. | 15 | * Neither the name of Motorola Mobility LLC nor the names of its |
16 | contributors may be used to endorse or promote products derived from this | ||
17 | software without specific prior written permission. | ||
17 | 18 | ||
18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | 19 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 20 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 21 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
21 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | 22 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
22 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 23 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
23 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 24 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
24 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 25 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
@@ -33,15 +34,15 @@ POSSIBILITY OF SUCH DAMAGE. | |||
33 | // Math Utility functions | 34 | // Math Utility functions |
34 | /////////////////////////////////////////////////////////////////////// | 35 | /////////////////////////////////////////////////////////////////////// |
35 | var VecUtils = require("js/helper-classes/3D/vec-utils").VecUtils, | 36 | var VecUtils = require("js/helper-classes/3D/vec-utils").VecUtils, |
36 | ViewUtils = require("js/helper-classes/3D/view-utils").ViewUtils, | 37 | ViewUtils = require("js/helper-classes/3D/view-utils").ViewUtils, |
37 | Rectangle = require("js/helper-classes/3D/rectangle").Rectangle; | 38 | Rectangle = require("js/helper-classes/3D/rectangle").Rectangle; |
38 | 39 | ||
39 | var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | 40 | var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { |
40 | /////////////////////////////////////////////////////////////////////// | 41 | /////////////////////////////////////////////////////////////////////// |
41 | // Instance variables | 42 | // Instance variables |
42 | /////////////////////////////////////////////////////////////////////// | 43 | /////////////////////////////////////////////////////////////////////// |
43 | // VecUtils: { value: null, writable: true }, | 44 | // VecUtils: { value: null, writable: true }, |
44 | 45 | ||
45 | EPSILON: { value: 1.e-5, writable: true }, | 46 | EPSILON: { value: 1.e-5, writable: true }, |
46 | 47 | ||
47 | // these are used in containment tests | 48 | // these are used in containment tests |
@@ -61,7 +62,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
61 | // Vector Methods | 62 | // Vector Methods |
62 | /////////////////////////////////////////////////////////////////////// | 63 | /////////////////////////////////////////////////////////////////////// |
63 | 64 | ||
64 | vecIntersectPlaneForParam: { | 65 | vecIntersectPlaneForParam: { |
65 | value: function( pt0, vec, plane ) | 66 | value: function( pt0, vec, plane ) |
66 | { | 67 | { |
67 | // declare the variable to return - undefined when there is no solution | 68 | // declare the variable to return - undefined when there is no solution |
@@ -82,7 +83,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
82 | } | 83 | } |
83 | }, | 84 | }, |
84 | 85 | ||
85 | vecMag3: { | 86 | vecMag3: { |
86 | value: function( vec ) | 87 | value: function( vec ) |
87 | { | 88 | { |
88 | if (vec.length < 3) return; | 89 | if (vec.length < 3) return; |
@@ -92,7 +93,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
92 | } | 93 | } |
93 | }, | 94 | }, |
94 | 95 | ||
95 | vecMag: { | 96 | vecMag: { |
96 | value: function( dimen, vec ) | 97 | value: function( dimen, vec ) |
97 | { | 98 | { |
98 | var sum = 0.0; | 99 | var sum = 0.0; |
@@ -102,7 +103,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
102 | } | 103 | } |
103 | }, | 104 | }, |
104 | 105 | ||
105 | vecSubtract: { | 106 | vecSubtract: { |
106 | value: function( a, b ) | 107 | value: function( a, b ) |
107 | { | 108 | { |
108 | var rtnVec; | 109 | var rtnVec; |
@@ -119,7 +120,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
119 | } | 120 | } |
120 | }, | 121 | }, |
121 | 122 | ||
122 | vecAdd: { | 123 | vecAdd: { |
123 | value: function( a, b ) | 124 | value: function( a, b ) |
124 | { | 125 | { |
125 | var rtnVec; | 126 | var rtnVec; |
@@ -136,7 +137,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
136 | } | 137 | } |
137 | }, | 138 | }, |
138 | 139 | ||
139 | vecDist: { | 140 | vecDist: { |
140 | value: function( a, b ) | 141 | value: function( a, b ) |
141 | { | 142 | { |
142 | var sum; | 143 | var sum; |
@@ -176,7 +177,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
176 | } | 177 | } |
177 | }, | 178 | }, |
178 | 179 | ||
179 | getPointOnPlane: { | 180 | getPointOnPlane: { |
180 | value: function( plane ) | 181 | value: function( plane ) |
181 | { | 182 | { |
182 | // abreviate the plane equation | 183 | // abreviate the plane equation |
@@ -203,7 +204,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
203 | } | 204 | } |
204 | }, | 205 | }, |
205 | 206 | ||
206 | transformPlane: { | 207 | transformPlane: { |
207 | value: function( plane, mat ) | 208 | value: function( plane, mat ) |
208 | { | 209 | { |
209 | // we will project a point down one of the coordinate axes to find a point on the plane | 210 | // we will project a point down one of the coordinate axes to find a point on the plane |
@@ -213,7 +214,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
213 | // find a point on the plane | 214 | // find a point on the plane |
214 | var ptOnPlane = this.getPointOnPlane(plane); | 215 | var ptOnPlane = this.getPointOnPlane(plane); |
215 | 216 | ||
216 | ptOnPlane[3] = 1.0; // 4 dimen so we can transform it | 217 | ptOnPlane[3] = 1.0; // 4 dimen so we can transform it |
217 | 218 | ||
218 | // transform the point | 219 | // transform the point |
219 | //ptOnPlane = mat.multiply( ptOnPlane ); | 220 | //ptOnPlane = mat.multiply( ptOnPlane ); |
@@ -225,12 +226,12 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
225 | } | 226 | } |
226 | }, | 227 | }, |
227 | 228 | ||
228 | transformHomogeneousPoint: { | 229 | transformHomogeneousPoint: { |
229 | value: function( srcPt, mat ) | 230 | value: function( srcPt, mat ) |
230 | { | 231 | { |
231 | var pt = srcPt.slice(0); | 232 | var pt = srcPt.slice(0); |
232 | this.makeDimension4( pt ); | 233 | this.makeDimension4( pt ); |
233 | var x = VecUtils.vecDot(4, pt, [mat[0], mat[4], mat[ 8], mat[12]] ), | 234 | var x = VecUtils.vecDot(4, pt, [mat[0], mat[4], mat[ 8], mat[12]] ), |
234 | y = VecUtils.vecDot(4, pt, [mat[1], mat[5], mat[ 9], mat[13]] ), | 235 | y = VecUtils.vecDot(4, pt, [mat[1], mat[5], mat[ 9], mat[13]] ), |
235 | z = VecUtils.vecDot(4, pt, [mat[2], mat[6], mat[10], mat[14]] ), | 236 | z = VecUtils.vecDot(4, pt, [mat[2], mat[6], mat[10], mat[14]] ), |
236 | w = VecUtils.vecDot(4, pt, [mat[3], mat[7], mat[11], mat[15]] ); | 237 | w = VecUtils.vecDot(4, pt, [mat[3], mat[7], mat[11], mat[15]] ); |
@@ -239,7 +240,7 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
239 | } | 240 | } |
240 | }, | 241 | }, |
241 | 242 | ||
242 | applyHomogeneousCoordinate: { | 243 | applyHomogeneousCoordinate: { |
243 | value: function( hPt ) | 244 | value: function( hPt ) |
244 | { | 245 | { |
245 | var w = hPt[3]; | 246 | var w = hPt[3]; |
@@ -252,19 +253,19 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
252 | } | 253 | } |
253 | }, | 254 | }, |
254 | 255 | ||
255 | transformAndDivideHomogeneousPoint: { | 256 | transformAndDivideHomogeneousPoint: { |
256 | value: function( pt, mat ) | 257 | value: function( pt, mat ) |
257 | { | 258 | { |
258 | return this.applyHomogeneousCoordinate( this.transformHomogeneousPoint(pt, mat) ); | 259 | return this.applyHomogeneousCoordinate( this.transformHomogeneousPoint(pt, mat) ); |
259 | } | 260 | } |
260 | }, | 261 | }, |
261 | 262 | ||
262 | transformPoint: { | 263 | transformPoint: { |
263 | value: function( srcPt, mat ) | 264 | value: function( srcPt, mat ) |
264 | { | 265 | { |
265 | var pt = srcPt.slice(0); | 266 | var pt = srcPt.slice(0); |
266 | this.makeDimension3( pt ); | 267 | this.makeDimension3( pt ); |
267 | var x = VecUtils.vecDot(3, pt, [mat[0], mat[4], mat[ 8]] ) + mat[12], | 268 | var x = VecUtils.vecDot(3, pt, [mat[0], mat[4], mat[ 8]] ) + mat[12], |
268 | y = VecUtils.vecDot(3, pt, [mat[1], mat[5], mat[ 9]] ) + mat[13], | 269 | y = VecUtils.vecDot(3, pt, [mat[1], mat[5], mat[ 9]] ) + mat[13], |
269 | z = VecUtils.vecDot(3, pt, [mat[2], mat[6], mat[10]] ) + mat[14]; | 270 | z = VecUtils.vecDot(3, pt, [mat[2], mat[6], mat[10]] ) + mat[14]; |
270 | 271 | ||
@@ -272,11 +273,11 @@ var MathUtilsClass = exports.MathUtilsClass = Object.create(Object.prototype, { | |||
272 | } | 273 | } |
273 | }, | 274 | }, |
274 | 275 | ||
275 | transformVector: { |