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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | import { Vector2 } from './Vector2.js';
const _vector = /*@__PURE__*/ new Vector2();
class Box2 {
constructor(min = new Vector2(+Infinity, +Infinity), max = new Vector2(-Infinity, -Infinity)) {
this.min = min;
this.max = max;
}
set(min, max) {
this.min.copy(min);
this.max.copy(max);
return this;
}
setFromPoints(points) {
this.makeEmpty();
for (let i = 0, il = points.length; i < il; i++) {
this.expandByPoint(points[i]);
}
return this;
}
setFromCenterAndSize(center, size) {
const halfSize = _vector.copy(size).multiplyScalar(0.5);
this.min.copy(center).sub(halfSize);
this.max.copy(center).add(halfSize);
return this;
}
clone() {
return new this.constructor().copy(this);
}
copy(box) {
this.min.copy(box.min);
this.max.copy(box.max);
return this;
}
makeEmpty() {
this.min.x = this.min.y = +Infinity;
this.max.x = this.max.y = -Infinity;
return this;
}
isEmpty() {
// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
return this.max.x < this.min.x || this.max.y < this.min.y;
}
getCenter(target) {
return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
}
getSize(target) {
return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
}
expandByPoint(point) {
this.min.min(point);
this.max.max(point);
return this;
}
expandByVector(vector) {
this.min.sub(vector);
this.max.add(vector);
return this;
}
expandByScalar(scalar) {
this.min.addScalar(-scalar);
this.max.addScalar(scalar);
return this;
}
containsPoint(point) {
return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y ? false : true;
}
containsBox(box) {
return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y;
}
getParameter(point, target) {
// This can potentially have a divide by zero if the box
// has a size dimension of 0.
return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y));
}
intersectsBox(box) {
// using 4 splitting planes to rule out intersections
return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
}
clampPoint(point, target) {
return target.copy(point).clamp(this.min, this.max);
}
distanceToPoint(point) {
const clampedPoint = _vector.copy(point).clamp(this.min, this.max);
return clampedPoint.sub(point).length();
}
intersect(box) {
this.min.max(box.min);
this.max.min(box.max);
return this;
}
union(box) {
this.min.min(box.min);
this.max.max(box.max);
return this;
}
translate(offset) {
this.min.add(offset);
this.max.add(offset);
return this;
}
equals(box) {
return box.min.equals(this.min) && box.max.equals(this.max);
}
}
Box2.prototype.isBox2 = true;
export { Box2 };
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