1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
8 | function Vector2( x, y ) {
|
9 |
|
10 | this.x = x || 0;
|
11 | this.y = y || 0;
|
12 |
|
13 | }
|
14 |
|
15 | Object.defineProperties( Vector2.prototype, {
|
16 |
|
17 | "width": {
|
18 |
|
19 | get: function () {
|
20 |
|
21 | return this.x;
|
22 |
|
23 | },
|
24 |
|
25 | set: function ( value ) {
|
26 |
|
27 | this.x = value;
|
28 |
|
29 | }
|
30 |
|
31 | },
|
32 |
|
33 | "height": {
|
34 |
|
35 | get: function () {
|
36 |
|
37 | return this.y;
|
38 |
|
39 | },
|
40 |
|
41 | set: function ( value ) {
|
42 |
|
43 | this.y = value;
|
44 |
|
45 | }
|
46 |
|
47 | }
|
48 |
|
49 | } );
|
50 |
|
51 | Object.assign( Vector2.prototype, {
|
52 |
|
53 | isVector2: true,
|
54 |
|
55 | set: function ( x, y ) {
|
56 |
|
57 | this.x = x;
|
58 | this.y = y;
|
59 |
|
60 | return this;
|
61 |
|
62 | },
|
63 |
|
64 | setScalar: function ( scalar ) {
|
65 |
|
66 | this.x = scalar;
|
67 | this.y = scalar;
|
68 |
|
69 | return this;
|
70 |
|
71 | },
|
72 |
|
73 | setX: function ( x ) {
|
74 |
|
75 | this.x = x;
|
76 |
|
77 | return this;
|
78 |
|
79 | },
|
80 |
|
81 | setY: function ( y ) {
|
82 |
|
83 | this.y = y;
|
84 |
|
85 | return this;
|
86 |
|
87 | },
|
88 |
|
89 | setComponent: function ( index, value ) {
|
90 |
|
91 | switch ( index ) {
|
92 |
|
93 | case 0: this.x = value; break;
|
94 | case 1: this.y = value; break;
|
95 | default: throw new Error( 'index is out of range: ' + index );
|
96 |
|
97 | }
|
98 |
|
99 | return this;
|
100 |
|
101 | },
|
102 |
|
103 | getComponent: function ( index ) {
|
104 |
|
105 | switch ( index ) {
|
106 |
|
107 | case 0: return this.x;
|
108 | case 1: return this.y;
|
109 | default: throw new Error( 'index is out of range: ' + index );
|
110 |
|
111 | }
|
112 |
|
113 | },
|
114 |
|
115 | clone: function () {
|
116 |
|
117 | return new this.constructor( this.x, this.y );
|
118 |
|
119 | },
|
120 |
|
121 | copy: function ( v ) {
|
122 |
|
123 | this.x = v.x;
|
124 | this.y = v.y;
|
125 |
|
126 | return this;
|
127 |
|
128 | },
|
129 |
|
130 | add: function ( v, w ) {
|
131 |
|
132 | if ( w !== undefined ) {
|
133 |
|
134 | console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
|
135 | return this.addVectors( v, w );
|
136 |
|
137 | }
|
138 |
|
139 | this.x += v.x;
|
140 | this.y += v.y;
|
141 |
|
142 | return this;
|
143 |
|
144 | },
|
145 |
|
146 | addScalar: function ( s ) {
|
147 |
|
148 | this.x += s;
|
149 | this.y += s;
|
150 |
|
151 | return this;
|
152 |
|
153 | },
|
154 |
|
155 | addVectors: function ( a, b ) {
|
156 |
|
157 | this.x = a.x + b.x;
|
158 | this.y = a.y + b.y;
|
159 |
|
160 | return this;
|
161 |
|
162 | },
|
163 |
|
164 | addScaledVector: function ( v, s ) {
|
165 |
|
166 | this.x += v.x * s;
|
167 | this.y += v.y * s;
|
168 |
|
169 | return this;
|
170 |
|
171 | },
|
172 |
|
173 | sub: function ( v, w ) {
|
174 |
|
175 | if ( w !== undefined ) {
|
176 |
|
177 | console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
|
178 | return this.subVectors( v, w );
|
179 |
|
180 | }
|
181 |
|
182 | this.x -= v.x;
|
183 | this.y -= v.y;
|
184 |
|
185 | return this;
|
186 |
|
187 | },
|
188 |
|
189 | subScalar: function ( s ) {
|
190 |
|
191 | this.x -= s;
|
192 | this.y -= s;
|
193 |
|
194 | return this;
|
195 |
|
196 | },
|
197 |
|
198 | subVectors: function ( a, b ) {
|
199 |
|
200 | this.x = a.x - b.x;
|
201 | this.y = a.y - b.y;
|
202 |
|
203 | return this;
|
204 |
|
205 | },
|
206 |
|
207 | multiply: function ( v ) {
|
208 |
|
209 | this.x *= v.x;
|
210 | this.y *= v.y;
|
211 |
|
212 | return this;
|
213 |
|
214 | },
|
215 |
|
216 | multiplyScalar: function ( scalar ) {
|
217 |
|
218 | this.x *= scalar;
|
219 | this.y *= scalar;
|
220 |
|
221 | return this;
|
222 |
|
223 | },
|
224 |
|
225 | divide: function ( v ) {
|
226 |
|
227 | this.x /= v.x;
|
228 | this.y /= v.y;
|
229 |
|
230 | return this;
|
231 |
|
232 | },
|
233 |
|
234 | divideScalar: function ( scalar ) {
|
235 |
|
236 | return this.multiplyScalar( 1 / scalar );
|
237 |
|
238 | },
|
239 |
|
240 | applyMatrix3: function ( m ) {
|
241 |
|
242 | var x = this.x, y = this.y;
|
243 | var e = m.elements;
|
244 |
|
245 | this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
|
246 | this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
|
247 |
|
248 | return this;
|
249 |
|
250 | },
|
251 |
|
252 | min: function ( v ) {
|
253 |
|
254 | this.x = Math.min( this.x, v.x );
|
255 | this.y = Math.min( this.y, v.y );
|
256 |
|
257 | return this;
|
258 |
|
259 | },
|
260 |
|
261 | max: function ( v ) {
|
262 |
|
263 | this.x = Math.max( this.x, v.x );
|
264 | this.y = Math.max( this.y, v.y );
|
265 |
|
266 | return this;
|
267 |
|
268 | },
|
269 |
|
270 | clamp: function ( min, max ) {
|
271 |
|
272 |
|
273 |
|
274 | this.x = Math.max( min.x, Math.min( max.x, this.x ) );
|
275 | this.y = Math.max( min.y, Math.min( max.y, this.y ) );
|
276 |
|
277 | return this;
|
278 |
|
279 | },
|
280 |
|
281 | clampScalar: function () {
|
282 |
|
283 | var min = new Vector2();
|
284 | var max = new Vector2();
|
285 |
|
286 | return function clampScalar( minVal, maxVal ) {
|
287 |
|
288 | min.set( minVal, minVal );
|
289 | max.set( maxVal, maxVal );
|
290 |
|
291 | return this.clamp( min, max );
|
292 |
|
293 | };
|
294 |
|
295 | }(),
|
296 |
|
297 | clampLength: function ( min, max ) {
|
298 |
|
299 | var length = this.length();
|
300 |
|
301 | return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
|
302 |
|
303 | },
|
304 |
|
305 | floor: function () {
|
306 |
|
307 | this.x = Math.floor( this.x );
|
308 | this.y = Math.floor( this.y );
|
309 |
|
310 | return this;
|
311 |
|
312 | },
|
313 |
|
314 | ceil: function () {
|
315 |
|
316 | this.x = Math.ceil( this.x );
|
317 | this.y = Math.ceil( this.y );
|
318 |
|
319 | return this;
|
320 |
|
321 | },
|
322 |
|
323 | round: function () {
|
324 |
|
325 | this.x = Math.round( this.x );
|
326 | this.y = Math.round( this.y );
|
327 |
|
328 | return this;
|
329 |
|
330 | },
|
331 |
|
332 | roundToZero: function () {
|
333 |
|
334 | this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
|
335 | this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
|
336 |
|
337 | return this;
|
338 |
|
339 | },
|
340 |
|
341 | negate: function () {
|
342 |
|
343 | this.x = - this.x;
|
344 | this.y = - this.y;
|
345 |
|
346 | return this;
|
347 |
|
348 | },
|
349 |
|
350 | dot: function ( v ) {
|
351 |
|
352 | return this.x * v.x + this.y * v.y;
|
353 |
|
354 | },
|
355 |
|
356 | lengthSq: function () {
|
357 |
|
358 | return this.x * this.x + this.y * this.y;
|
359 |
|
360 | },
|
361 |
|
362 | length: function () {
|
363 |
|
364 | return Math.sqrt( this.x * this.x + this.y * this.y );
|
365 |
|
366 | },
|
367 |
|
368 | manhattanLength: function () {
|
369 |
|
370 | return Math.abs( this.x ) + Math.abs( this.y );
|
371 |
|
372 | },
|
373 |
|
374 | normalize: function () {
|
375 |
|
376 | return this.divideScalar( this.length() || 1 );
|
377 |
|
378 | },
|
379 |
|
380 | angle: function () {
|
381 |
|
382 |
|
383 |
|
384 | var angle = Math.atan2( this.y, this.x );
|
385 |
|
386 | if ( angle < 0 ) angle += 2 * Math.PI;
|
387 |
|
388 | return angle;
|
389 |
|
390 | },
|
391 |
|
392 | distanceTo: function ( v ) {
|
393 |
|
394 | return Math.sqrt( this.distanceToSquared( v ) );
|
395 |
|
396 | },
|
397 |
|
398 | distanceToSquared: function ( v ) {
|
399 |
|
400 | var dx = this.x - v.x, dy = this.y - v.y;
|
401 | return dx * dx + dy * dy;
|
402 |
|
403 | },
|
404 |
|
405 | manhattanDistanceTo: function ( v ) {
|
406 |
|
407 | return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
|
408 |
|
409 | },
|
410 |
|
411 | setLength: function ( length ) {
|
412 |
|
413 | return this.normalize().multiplyScalar( length );
|
414 |
|
415 | },
|
416 |
|
417 | lerp: function ( v, alpha ) {
|
418 |
|
419 | this.x += ( v.x - this.x ) * alpha;
|
420 | this.y += ( v.y - this.y ) * alpha;
|
421 |
|
422 | return this;
|
423 |
|
424 | },
|
425 |
|
426 | lerpVectors: function ( v1, v2, alpha ) {
|
427 |
|
428 | return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 );
|
429 |
|
430 | },
|
431 |
|
432 | equals: function ( v ) {
|
433 |
|
434 | return ( ( v.x === this.x ) && ( v.y === this.y ) );
|
435 |
|
436 | },
|
437 |
|
438 | fromArray: function ( array, offset ) {
|
439 |
|
440 | if ( offset === undefined ) offset = 0;
|
441 |
|
442 | this.x = array[ offset ];
|
443 | this.y = array[ offset + 1 ];
|
444 |
|
445 | return this;
|
446 |
|
447 | },
|
448 |
|
449 | toArray: function ( array, offset ) {
|
450 |
|
451 | if ( array === undefined ) array = [];
|
452 | if ( offset === undefined ) offset = 0;
|
453 |
|
454 | array[ offset ] = this.x;
|
455 | array[ offset + 1 ] = this.y;
|
456 |
|
457 | return array;
|
458 |
|
459 | },
|
460 |
|
461 | fromBufferAttribute: function ( attribute, index, offset ) {
|
462 |
|
463 | if ( offset !== undefined ) {
|
464 |
|
465 | console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );
|
466 |
|
467 | }
|
468 |
|
469 | this.x = attribute.getX( index );
|
470 | this.y = attribute.getY( index );
|
471 |
|
472 | return this;
|
473 |
|
474 | },
|
475 |
|
476 | rotateAround: function ( center, angle ) {
|
477 |
|
478 | var c = Math.cos( angle ), s = Math.sin( angle );
|
479 |
|
480 | var x = this.x - center.x;
|
481 | var y = this.y - center.y;
|
482 |
|
483 | this.x = x * c - y * s + center.x;
|
484 | this.y = x * s + y * c + center.y;
|
485 |
|
486 | return this;
|
487 |
|
488 | }
|
489 |
|
490 | } );
|
491 |
|
492 |
|
493 | export { Vector2 };
|