| 1 | import { Matrix } from '@pixi/math';
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| 2 |
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| 3 | const tempMat = new Matrix();
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| 4 | class TextureMatrix {
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| 5 | constructor(texture, clampMargin) {
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| 6 | this._texture = texture;
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| 7 | this.mapCoord = new Matrix();
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| 8 | this.uClampFrame = new Float32Array(4);
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| 9 | this.uClampOffset = new Float32Array(2);
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| 10 | this._textureID = -1;
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| 11 | this._updateID = 0;
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| 12 | this.clampOffset = 0;
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| 13 | this.clampMargin = typeof clampMargin === "undefined" ? 0.5 : clampMargin;
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| 14 | this.isSimple = false;
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| 15 | }
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| 16 | get texture() {
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| 17 | return this._texture;
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| 18 | }
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| 19 | set texture(value) {
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| 20 | this._texture = value;
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| 21 | this._textureID = -1;
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| 22 | }
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| 23 | multiplyUvs(uvs, out) {
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| 24 | if (out === void 0) {
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| 25 | out = uvs;
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| 26 | }
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| 27 | const mat = this.mapCoord;
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| 28 | for (let i = 0; i < uvs.length; i += 2) {
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| 29 | const x = uvs[i];
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| 30 | const y = uvs[i + 1];
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| 31 | out[i] = x * mat.a + y * mat.c + mat.tx;
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| 32 | out[i + 1] = x * mat.b + y * mat.d + mat.ty;
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| 33 | }
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| 34 | return out;
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| 35 | }
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| 36 | update(forceUpdate) {
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| 37 | const tex = this._texture;
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| 38 | if (!tex || !tex.valid) {
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| 39 | return false;
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| 40 | }
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| 41 | if (!forceUpdate && this._textureID === tex._updateID) {
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| 42 | return false;
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| 43 | }
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| 44 | this._textureID = tex._updateID;
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| 45 | this._updateID++;
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| 46 | const uvs = tex._uvs;
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| 47 | this.mapCoord.set(uvs.x1 - uvs.x0, uvs.y1 - uvs.y0, uvs.x3 - uvs.x0, uvs.y3 - uvs.y0, uvs.x0, uvs.y0);
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| 48 | const orig = tex.orig;
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| 49 | const trim = tex.trim;
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| 50 | if (trim) {
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| 51 | tempMat.set(orig.width / trim.width, 0, 0, orig.height / trim.height, -trim.x / trim.width, -trim.y / trim.height);
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| 52 | this.mapCoord.append(tempMat);
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| 53 | }
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| 54 | const texBase = tex.baseTexture;
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| 55 | const frame = this.uClampFrame;
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| 56 | const margin = this.clampMargin / texBase.resolution;
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| 57 | const offset = this.clampOffset;
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| 58 | frame[0] = (tex._frame.x + margin + offset) / texBase.width;
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| 59 | frame[1] = (tex._frame.y + margin + offset) / texBase.height;
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| 60 | frame[2] = (tex._frame.x + tex._frame.width - margin + offset) / texBase.width;
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| 61 | frame[3] = (tex._frame.y + tex._frame.height - margin + offset) / texBase.height;
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| 62 | this.uClampOffset[0] = offset / texBase.realWidth;
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| 63 | this.uClampOffset[1] = offset / texBase.realHeight;
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| 64 | this.isSimple = tex._frame.width === texBase.width && tex._frame.height === texBase.height && tex.rotate === 0;
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| 65 | return true;
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| 66 | }
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| 67 | }
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| 68 |
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| 69 | export { TextureMatrix };
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| 70 |
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