aboutsummaryrefslogtreecommitdiff
path: root/js/helper-classes/RDGE/GLAnchorPoint.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/helper-classes/RDGE/GLAnchorPoint.js')
-rw-r--r--js/helper-classes/RDGE/GLAnchorPoint.js230
1 files changed, 115 insertions, 115 deletions
diff --git a/js/helper-classes/RDGE/GLAnchorPoint.js b/js/helper-classes/RDGE/GLAnchorPoint.js
index 496b6f60..6b4af072 100644
--- a/js/helper-classes/RDGE/GLAnchorPoint.js
+++ b/js/helper-classes/RDGE/GLAnchorPoint.js
@@ -26,125 +26,125 @@ function GLAnchorPoint() {
26 this._nextX = 0.0; 26 this._nextX = 0.0;
27 this._nextY = 0.0; 27 this._nextY = 0.0;
28 this._nextZ = 0.0; 28 this._nextZ = 0.0;
29 29}
30 // *********** setters ************ 30 // *********** setters ************
31 this.setPos = function (x, y, z) { this._x = x; this._y = y; this._z = z; } 31GLAnchorPoint.prototype.setPos = function (x, y, z) { this._x = x; this._y = y; this._z = z; }
32 this.setPrevPos = function (x, y, z) { this._prevX = x; this._prevY = y; this._prevZ = z; } 32GLAnchorPoint.prototype.setPrevPos = function (x, y, z) { this._prevX = x; this._prevY = y; this._prevZ = z; }
33 this.setNextPos = function (x, y, z) { this._nextX = x; this._nextY = y; this._nextZ = z; } 33GLAnchorPoint.prototype.setNextPos = function (x, y, z) { this._nextX = x; this._nextY = y; this._nextZ = z; }
34
35 this.setPrevFromNext = function () {
36 //set the previous control point by reflecting the next control point
37 var dispX = this._nextX - this._x;
38 var dispY = this._nextY - this._y;
39 var dispZ = this._nextZ - this._z;
40
41 this._prevX = this._x - dispX;
42 this._prevY = this._y - dispY;
43 this._prevZ = this._z - dispZ;
44 }
45 this.setNextFromPrev = function () {
46 //set the previous control point by reflecting the next control point
47 var dispX = this._prevX - this._x;
48 var dispY = this._prevY - this._y;
49 var dispZ = this._prevZ - this._z;
50
51 this._nextX = this._x - dispX;
52 this._nextY = this._y - dispY;
53 this._nextZ = this._z - dispZ;
54 }
55 34
56 //translate the next point from the translation that was applied to the prev. point 35GLAnchorPoint.prototype.setPrevFromNext = function () {
57 this.translateNextFromPrev = function (tx, ty, tz) { 36 //set the previous control point by reflecting the next control point
58 // *** compute the rotation of the prev vector *** 37 var dispX = this._nextX - this._x;
59 var oldP = Vector.create([this._prevX + tx - this._x, this._prevY + ty - this._y, this._prevZ + tz - this._z]); 38 var dispY = this._nextY - this._y;
60 var newP = Vector.create([this._prevX - this._x, this._prevY - this._y, this._prevZ - this._z]); 39 var dispZ = this._nextZ - this._z;
61 //compute angle between the two vectors
62 var axis = Vector.create([0, 0, 0]);
63 var angle = MathUtils.getAxisAngleBetween3DVectors(oldP, newP, axis);
64 if (angle === 0)
65 return;
66
67 // *** compute the vector from anchor to next
68 var oldN = Vector.create([this._nextX - this._x, this._nextY - this._y, this._nextZ - this._z]);
69 var rotMat = Matrix.Rotation(-angle, axis);
70 var newN = MathUtils.transformVector(oldN, rotMat);
71
72 //TEMP for some situations the axis angle computation returns NaNs
73 if (isNaN(newN[0]) || isNaN(newN[1]) || isNaN(newN[2])) {
74 return;
75 }
76 //end TEMP
77 this._nextX = this._x + newN[0];
78 this._nextY = this._y + newN[1];
79 this._nextZ = this._z + newN[2];
80 }
81 //translate the next point from the translation that was applied to the prev. point
82 this.translatePrevFromNext = function (tx, ty, tz) {
83 // *** compute the rotation of the next vector ***
84 var oldN = Vector.create([this._nextX + tx - this._x, this._nextY + ty - this._y, this._nextZ + tz - this._z]);
85 var newN = Vector.create([this._nextX - this._x, this._nextY - this._y, this._nextZ - this._z]);
86 //compute angle between the two vectors
87 var axis = Vector.create([0, 0, 0]);
88 var angle = MathUtils.getAxisAngleBetween3DVectors(oldN, newN, axis);
89 if (angle === 0)
90 return;
91
92 // *** compute the vector from anchor to prev
93 var oldP = Vector.create([this._prevX - this._x, this._prevY - this._y, this._prevZ - this._z]);
94 var rotMat = Matrix.Rotation(-angle, axis);
95 var newP = MathUtils.transformVector(oldP, rotMat);
96
97 //TEMP for some situations the axis angle computation returns NaNs
98 if (isNaN(newP[0]) || isNaN(newP[1]) || isNaN(newP[2])) {
99 return;
100 }
101 //end TEMP
102 this._prevX = this._x + newP[0];
103 this._prevY = this._y + newP[1];
104 this._prevZ = this._z + newP[2];
105 }
106 40
41 this._prevX = this._x - dispX;
42 this._prevY = this._y - dispY;
43 this._prevZ = this._z - dispZ;
44}
45GLAnchorPoint.prototype.setNextFromPrev = function () {
46 //set the previous control point by reflecting the next control point
47 var dispX = this._prevX - this._x;
48 var dispY = this._prevY - this._y;
49 var dispZ = this._prevZ - this._z;
107 50
108 // ******* modifiers ******* 51 this._nextX = this._x - dispX;
109 this.translatePrev = function (x, y, z) { 52 this._nextY = this._y - dispY;
110 this._prevX += x; this._prevY += y; this._prevZ += z; 53 this._nextZ = this._z - dispZ;
111 } 54}
112 this.translateNext = function (x, y, z) { 55
113 this._nextX += x; this._nextY += y; this._nextZ += z; 56//translate the next point from the translation that was applied to the prev. point
114 } 57GLAnchorPoint.prototype.translateNextFromPrev = function (tx, ty, tz) {
115 this.translate = function (x, y, z) { 58 // *** compute the rotation of the prev vector ***
116 this._x += x; this._y += y; this._z += z; 59 var oldP = Vector.create([this._prevX + tx - this._x, this._prevY + ty - this._y, this._prevZ + tz - this._z]);
117 } 60 var newP = Vector.create([this._prevX - this._x, this._prevY - this._y, this._prevZ - this._z]);
118 this.translateAll = function (x, y, z) { 61 //compute angle between the two vectors
119 this.translate(x, y, z); 62 var axis = Vector.create([0, 0, 0]);
120 this.translatePrev(x, y, z); 63 var angle = MathUtils.getAxisAngleBetween3DVectors(oldP, newP, axis);
121 this.translateNext(x, y, z); 64 if (angle === 0)
122 } 65 return;
123 66
124 67 // *** compute the vector from anchor to next
125 // ********* getters ********** 68 var oldN = Vector.create([this._nextX - this._x, this._nextY - this._y, this._nextZ - this._z]);
126 this.getPosX = function () { return this._x; } 69 var rotMat = Matrix.Rotation(-angle, axis);
127 this.getPosY = function () { return this._y; } 70 var newN = MathUtils.transformVector(oldN, rotMat);
128 this.getPosZ = function () { return this._z; } 71
129 this.getPrevX = function () { return this._prevX; } 72 //TEMP for some situations the axis angle computation returns NaNs
130 this.getPrevY = function () { return this._prevY; } 73 if (isNaN(newN[0]) || isNaN(newN[1]) || isNaN(newN[2])) {
131 this.getPrevZ = function () { return this._prevZ; } 74 return;
132 this.getNextX = function () { return this._nextX; }
133 this.getNextY = function () { return this._nextY; }
134 this.getNextZ = function () { return this._nextZ; }
135 this.getPos = function() { return Vector.create([this._x, this._y, this._z]);}
136 this.getPrev = function() { return Vector.create([this._prevX, this._prevY, this._prevZ]);}
137 this.getNext = function() { return Vector.create([this._nextX, this._nextY, this._nextZ]);}
138 //return the square of distance from passed in point to the anchor position
139 this.getDistanceSq = function (x, y, z) {
140 return (this._x - x) * (this._x - x) + (this._y - y) * (this._y - y) + (this._z - z) * (this._z - z);
141 }
142 //return sq. of distance to prev.
143 this.getPrevDistanceSq = function (x, y, z) {
144 return (this._prevX - x) * (this._prevX - x) + (this._prevY - y) * (this._prevY - y) + (this._prevZ - z) * (this._prevZ - z);
145 } 75 }
146 //return sq. of distance to next 76 //end TEMP
147 this.getNextDistanceSq = function (x, y, z) { 77 this._nextX = this._x + newN[0];
148 return (this._nextX - x) * (this._nextX - x) + (this._nextY - y) * (this._nextY - y) + (this._nextZ - z) * (this._nextZ - z); 78 this._nextY = this._y + newN[1];
79 this._nextZ = this._z + newN[2];
80}
81//translate the next point from the translation that was applied to the prev. point
82GLAnchorPoint.prototype.translatePrevFromNext = function (tx, ty, tz) {
83 // *** compute the rotation of the next vector ***
84 var oldN = Vector.create([this._nextX + tx - this._x, this._nextY + ty - this._y, this._nextZ + tz - this._z]);
85 var newN = Vector.create([this._nextX - this._x, this._nextY - this._y, this._nextZ - this._z]);
86 //compute angle between the two vectors
87 var axis = Vector.create([0, 0, 0]);
88 var angle = MathUtils.getAxisAngleBetween3DVectors(oldN, newN, axis);
89 if (angle === 0)
90 return;
91
92 // *** compute the vector from anchor to prev
93 var oldP = Vector.create([this._prevX - this._x, this._prevY - this._y, this._prevZ - this._z]);
94 var rotMat = Matrix.Rotation(-angle, axis);
95 var newP = MathUtils.transformVector(oldP, rotMat);
96
97 //TEMP for some situations the axis angle computation returns NaNs
98 if (isNaN(newP[0]) || isNaN(newP[1]) || isNaN(newP[2])) {
99 return;
149 } 100 }
101 //end TEMP
102 this._prevX = this._x + newP[0];
103 this._prevY = this._y + newP[1];
104 this._prevZ = this._z + newP[2];
105}
106
107
108// ******* modifiers *******
109GLAnchorPoint.prototype.translatePrev = function (x, y, z) {
110 this._prevX += x; this._prevY += y; this._prevZ += z;
111}
112GLAnchorPoint.prototype.translateNext = function (x, y, z) {
113 this._nextX += x; this._nextY += y; this._nextZ += z;
114}
115GLAnchorPoint.prototype.translate = function (x, y, z) {
116 this._x += x; this._y += y; this._z += z;
150} 117}
118GLAnchorPoint.prototype.translateAll = function (x, y, z) {
119 this.translate(x, y, z);
120 this.translatePrev(x, y, z);
121 this.translateNext(x, y, z);
122}
123
124
125// ********* getters **********
126GLAnchorPoint.prototype.getPosX = function () { return this._x; }
127GLAnchorPoint.prototype.getPosY = function () { return this._y; }
128GLAnchorPoint.prototype.getPosZ = function () { return this._z; }
129GLAnchorPoint.prototype.getPrevX = function () { return this._prevX; }
130GLAnchorPoint.prototype.getPrevY = function () { return this._prevY; }
131GLAnchorPoint.prototype.getPrevZ = function () { return this._prevZ; }
132GLAnchorPoint.prototype.getNextX = function () { return this._nextX; }
133GLAnchorPoint.prototype.getNextY = function () { return this._nextY; }
134GLAnchorPoint.prototype.getNextZ = function () { return this._nextZ; }
135GLAnchorPoint.prototype.getPos = function() { return Vector.create([this._x, this._y, this._z]);}