/**
* Class controls cache for UV mapping from Texture normal space to BaseTexture normal space.
*
* @class
* @memberof PIXI
*/
export class MeshBatchUvs {
/**
* @param {PIXI.Buffer} uvBuffer - Buffer with normalized uv's
* @param {PIXI.TextureMatrix} uvMatrix - Material UV matrix
*/
constructor(uvBuffer, uvMatrix) {
/**
* Buffer with normalized UV's
* @member {PIXI.Buffer}
*/
this.uvBuffer = uvBuffer;
/**
* Material UV matrix
* @member {PIXI.TextureMatrix}
*/
this.uvMatrix = uvMatrix;
/**
* UV Buffer data
* @member {Float32Array}
* @readonly
*/
this.data = null;
this._bufferUpdateId = -1;
this._textureUpdateId = -1;
this._updateID = 0;
}
/**
* updates
*
* @param {boolean} [forceUpdate] - force the update
*/
update(forceUpdate) {
if (!forceUpdate
&& this._bufferUpdateId === this.uvBuffer._updateID
&& this._textureUpdateId === this.uvMatrix._updateID) {
return;
}
this._bufferUpdateId = this.uvBuffer._updateID;
this._textureUpdateId = this.uvMatrix._updateID;
const data = this.uvBuffer.data;
if (!this.data || this.data.length !== data.length) {
this.data = new Float32Array(data.length);
}
this.uvMatrix.multiplyUvs(data, this.data);
this._updateID++;
}
}