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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 | import { Camera } from './Camera.js';
class OrthographicCamera extends Camera {
constructor(left = -1, right = 1, top = 1, bottom = -1, near = 0.1, far = 2000) {
super();
this.type = 'OrthographicCamera';
this.zoom = 1;
this.view = null;
this.left = left;
this.right = right;
this.top = top;
this.bottom = bottom;
this.near = near;
this.far = far;
this.updateProjectionMatrix();
}
copy(source, recursive) {
super.copy(source, recursive);
this.left = source.left;
this.right = source.right;
this.top = source.top;
this.bottom = source.bottom;
this.near = source.near;
this.far = source.far;
this.zoom = source.zoom;
this.view = source.view === null ? null : Object.assign({}, source.view);
return this;
}
setViewOffset(fullWidth, fullHeight, x, y, width, height) {
if (this.view === null) {
this.view = {
enabled: true,
fullWidth: 1,
fullHeight: 1,
offsetX: 0,
offsetY: 0,
width: 1,
height: 1,
};
}
this.view.enabled = true;
this.view.fullWidth = fullWidth;
this.view.fullHeight = fullHeight;
this.view.offsetX = x;
this.view.offsetY = y;
this.view.width = width;
this.view.height = height;
this.updateProjectionMatrix();
}
clearViewOffset() {
if (this.view !== null) {
this.view.enabled = false;
}
this.updateProjectionMatrix();
}
updateProjectionMatrix() {
const dx = (this.right - this.left) / (2 * this.zoom);
const dy = (this.top - this.bottom) / (2 * this.zoom);
const cx = (this.right + this.left) / 2;
const cy = (this.top + this.bottom) / 2;
let left = cx - dx;
let right = cx + dx;
let top = cy + dy;
let bottom = cy - dy;
if (this.view !== null && this.view.enabled) {
const scaleW = (this.right - this.left) / this.view.fullWidth / this.zoom;
const scaleH = (this.top - this.bottom) / this.view.fullHeight / this.zoom;
left += scaleW * this.view.offsetX;
right = left + scaleW * this.view.width;
top -= scaleH * this.view.offsetY;
bottom = top - scaleH * this.view.height;
}
this.projectionMatrix.makeOrthographic(left, right, top, bottom, this.near, this.far);
this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
}
toJSON(meta) {
const data = super.toJSON(meta);
data.object.zoom = this.zoom;
data.object.left = this.left;
data.object.right = this.right;
data.object.top = this.top;
data.object.bottom = this.bottom;
data.object.near = this.near;
data.object.far = this.far;
if (this.view !== null) data.object.view = Object.assign({}, this.view);
return data;
}
}
OrthographicCamera.prototype.isOrthographicCamera = true;
export { OrthographicCamera };
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