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File size: 2,345 Bytes
2b7aae2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | import { Box3 } from '../math/Box3.js';
import { LineSegments } from '../objects/LineSegments.js';
import { LineBasicMaterial } from '../materials/LineBasicMaterial.js';
import { BufferAttribute } from '../core/BufferAttribute.js';
import { BufferGeometry } from '../core/BufferGeometry.js';
const _box = /*@__PURE__*/ new Box3();
class BoxHelper extends LineSegments {
constructor(object, color = 0xffff00) {
const indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
const positions = new Float32Array(8 * 3);
const geometry = new BufferGeometry();
geometry.setIndex(new BufferAttribute(indices, 1));
geometry.setAttribute('position', new BufferAttribute(positions, 3));
super(geometry, new LineBasicMaterial({ color: color, toneMapped: false }));
this.object = object;
this.type = 'BoxHelper';
this.matrixAutoUpdate = false;
this.update();
}
update(object) {
if (object !== undefined) {
console.warn('THREE.BoxHelper: .update() has no longer arguments.');
}
if (this.object !== undefined) {
_box.setFromObject(this.object);
}
if (_box.isEmpty()) return;
const min = _box.min;
const max = _box.max;
/*
5____4
1/___0/|
| 6__|_7
2/___3/
0: max.x, max.y, max.z
1: min.x, max.y, max.z
2: min.x, min.y, max.z
3: max.x, min.y, max.z
4: max.x, max.y, min.z
5: min.x, max.y, min.z
6: min.x, min.y, min.z
7: max.x, min.y, min.z
*/
const position = this.geometry.attributes.position;
const array = position.array;
array[0] = max.x;
array[1] = max.y;
array[2] = max.z;
array[3] = min.x;
array[4] = max.y;
array[5] = max.z;
array[6] = min.x;
array[7] = min.y;
array[8] = max.z;
array[9] = max.x;
array[10] = min.y;
array[11] = max.z;
array[12] = max.x;
array[13] = max.y;
array[14] = min.z;
array[15] = min.x;
array[16] = max.y;
array[17] = min.z;
array[18] = min.x;
array[19] = min.y;
array[20] = min.z;
array[21] = max.x;
array[22] = min.y;
array[23] = min.z;
position.needsUpdate = true;
this.geometry.computeBoundingSphere();
}
setFromObject(object) {
this.object = object;
this.update();
return this;
}
copy(source) {
LineSegments.prototype.copy.call(this, source);
this.object = source.object;
return this;
}
}
export { BoxHelper };
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