diff options
Diffstat (limited to 'node_modules/montage/ui/flow-bezier-spline.js')
-rwxr-xr-x | node_modules/montage/ui/flow-bezier-spline.js | 405 |
1 files changed, 405 insertions, 0 deletions
diff --git a/node_modules/montage/ui/flow-bezier-spline.js b/node_modules/montage/ui/flow-bezier-spline.js new file mode 100755 index 00000000..5f2a9e76 --- /dev/null +++ b/node_modules/montage/ui/flow-bezier-spline.js | |||
@@ -0,0 +1,405 @@ | |||
1 | var Montage = require("montage").Montage, | ||
2 | FlowBezierSpline = exports.FlowBezierSpline = Montage.create(Montage, { | ||
3 | |||
4 | knots: { | ||
5 | get: function () { | ||
6 | if (!this._knots) { | ||
7 | this._knots = []; | ||
8 | } | ||
9 | return this._knots; | ||
10 | }, | ||
11 | set: function (value) { | ||
12 | this._knots = value; | ||
13 | } | ||
14 | }, | ||
15 | |||
16 | previousHandlers: { | ||
17 | get: function () { | ||
18 | if (!this._previousHandlers) { | ||
19 | this._previousHandlers = []; | ||
20 | } | ||
21 | return this._previousHandlers; | ||
22 | }, | ||
23 | set: function (value) { | ||
24 | this._previousHandlers = value; | ||
25 | } | ||
26 | }, | ||
27 | |||
28 | nextHandlers: { | ||
29 | get: function () { | ||
30 | if (!this._nextHandlers) { | ||
31 | this._nextHandlers = []; | ||
32 | } | ||
33 | return this._nextHandlers; | ||
34 | }, | ||
35 | set: function (value) { | ||
36 | this._nextHandlers = value; | ||
37 | } | ||
38 | }, | ||
39 | |||
40 | densities: { | ||
41 | get: function () { | ||
42 | if (!this._densities) { | ||
43 | this._densities = []; | ||
44 | } | ||
45 | return this._densities; | ||
46 | }, | ||
47 | set: function (value) { | ||
48 | this._densities = value; | ||
49 | this._densitiesLength = this._densities.length; | ||
50 | this._densitySummation = null; | ||
51 | } | ||
52 | }, | ||
53 | |||
54 | _parameters: { | ||
55 | value: { | ||
56 | rotateX: { | ||
57 | data: [0], | ||
58 | units: "rad" | ||
59 | }, | ||
60 | rotateY: { | ||
61 | data: [0], | ||
62 | units: "rad" | ||
63 | }, | ||
64 | rotateZ: { | ||
65 | data: [0], | ||
66 | units: "rad" | ||
67 | }, | ||
68 | opacity: { | ||
69 | data: [1], | ||
70 | units: "" | ||
71 | } | ||
72 | } | ||
73 | }, | ||
74 | |||
75 | parameters: { | ||
76 | get: function () { | ||
77 | if (!this._parameters) { | ||
78 | this._parameters = []; | ||
79 | } | ||
80 | return this._parameters; | ||
81 | }, | ||
82 | set: function (value) { | ||
83 | this._parameters = value; | ||
84 | this._parametersLength = this._parameters.length; | ||
85 | } | ||
86 | }, | ||
87 | |||
88 | knotsLength: { | ||
89 | get: function () { | ||
90 | if (!this._knots) { | ||
91 | return 0; | ||
92 | } | ||
93 | return this._knots.length; | ||
94 | }, | ||
95 | set: function () {} | ||
96 | }, | ||
97 | |||
98 | getKnot: { | ||
99 | value: function (index) { | ||
100 | return this._knots[index]; | ||
101 | } | ||
102 | }, | ||
103 | |||
104 | getPreviousHandler: { | ||
105 | value: function (index) { | ||
106 | return this._previousHandlers[index]; | ||
107 | } | ||
108 | }, | ||
109 | |||
110 | getNextHandler: { | ||
111 | value: function (index) { | ||
112 | return this._nextHandlers[index]; | ||
113 | } | ||
114 | }, | ||
115 | |||
116 | removeKnot: { | ||
117 | value: function (index) { | ||
118 | this._knots.splice(index, 1); | ||
119 | this._nextHandlers.splice(index, 1); | ||
120 | this._previousHandlers.splice(index, 1); | ||
121 | this._densities.splice(index, 1); | ||
122 | } | ||
123 | }, | ||
124 | |||
125 | maxTime: { | ||
126 | get: function () { | ||
127 | if (!this._densitySummation) { | ||
128 | this._computeDensitySummation(); | ||
129 | } | ||
130 | return this._densitySummation[this._densitySummation.length - 1]; | ||
131 | }, | ||
132 | set: function () {} | ||
133 | }, | ||
134 | |||
135 | _computeDensitySummation: { | ||
136 | enumerable: false, | ||
137 | value: function () { | ||
138 | var length = this.densities.length - 1, | ||
139 | sum = 0, | ||
140 | i; | ||
141 | |||
142 | this._densitySummation = []; | ||
143 | for (i = 0; i < length; i++) { | ||
144 | sum += (this._densities[i] + this._densities[i + 1]) / 2; | ||
145 | this._densitySummation[i] = sum; | ||
146 | } | ||
147 | } | ||
148 | }, | ||
149 | |||
150 | getPositionAtTime: { | ||
151 | value: function (time) { | ||
152 | var p0, p1, p2, p3, | ||
153 | a, b, c, | ||
154 | t, y, | ||
155 | start, | ||
156 | parameters = {}, | ||
157 | i, j; | ||
158 | |||
159 | if ((time >= 0) && (time < this.maxTime)) { | ||
160 | if (this._previousIndex && (time >= this._densitySummation[this._previousIndex - 1])) { | ||
161 | i = this._previousIndex; | ||
162 | } else { | ||
163 | i = 0; | ||
164 | } | ||
165 | while (time >= this._densitySummation[i]) { | ||
166 | i++; | ||
167 | } | ||
168 | this._previousIndex = i; | ||
169 | start = i ? this._densitySummation[i - 1] : 0; | ||
170 | p0 = this._knots[i], | ||
171 | p1 = this._nextHandlers[i], | ||
172 | p2 = this._previousHandlers[i + 1], | ||
173 | p3 = this._knots[i + 1], | ||
174 | a = this._densities[i], | ||
175 | b = this._densities[i + 1], | ||
176 | c = a - b; | ||
177 | if ((c < -1e-10) || (c > 1e-10)) { | ||
178 | t = (a - Math.sqrt(a * a + (b - a) * 2 * (time - start))) / c; | ||
179 | } else { | ||
180 | t = (time - start) / a; | ||
181 | } | ||
182 | y = 1 - t; | ||
183 | // TODO: Redo this and create getParametersAtTime or getPositionAndParametersAtTime | ||
184 | for (j in this._parameters) { | ||
185 | if (this._parameters.hasOwnProperty(j)) { | ||
186 | if ((typeof this._parameters[j].data[i] !== "undefined") && (typeof this._parameters[j].data[i + 1] !== "undefined")) { | ||
187 | parameters[j] = (this._parameters[j].data[i] * y + this._parameters[j].data[i + 1] * t) + this._parameters[j].units; | ||
188 | } else { | ||
189 | parameters[j] = this._parameters[j].data[this._parameters[j].data.length - 1] + this._parameters[j].units; | ||
190 | } | ||
191 | } | ||
192 | } | ||
193 | return [ | ||
194 | p0[0]*(y*y*y)+p1[0]*(y*y*t*3)+p2[0]*(y*t*t*3)+p3[0]*(t*t*t), | ||
195 | p0[1]*(y*y*y)+p1[1]*(y*y*t*3)+p2[1]*(y*t*t*3)+p3[1]*(t*t*t), | ||
196 | p0[2]*(y*y*y)+p1[2]*(y*y*t*3)+p2[2]*(y*t*t*3)+p3[2]*(t*t*t), | ||
197 | parameters | ||
198 | ]; | ||
199 | } else { | ||
200 | return null; | ||
201 | } | ||
202 | } | ||
203 | }, | ||
204 | |||
205 | transformVectorArray: { | ||
206 | value: function (vectors, matrix) { | ||
207 | var length = vectors.length, | ||
208 | out = [], | ||
209 | iVector, | ||
210 | i; | ||
211 | |||
212 | for (i = 0; i < length; i++) { | ||
213 | iVector = vectors[i]; | ||
214 | out[i] = [ | ||
215 | iVector[0] * matrix[0] + iVector[1] * matrix[4] + iVector[2] * matrix [8] + matrix[12], | ||
216 | iVector[0] * matrix[1] + iVector[1] * matrix[5] + iVector[2] * matrix [9] + matrix[13], | ||
217 | iVector[0] * matrix[2] + iVector[1] * matrix[6] + iVector[2] * matrix [10] + matrix[14] | ||
218 | ]; | ||
219 | } | ||
220 | return out; | ||
221 | } | ||
222 | }, | ||
223 | |||
224 | transform: { | ||
225 | value: function (matrix) { | ||
226 | var spline = Montage.create(FlowBezierSpline); | ||