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{"version":3,"file":"Transform.mjs","sources":["../src/Transform.ts"],"sourcesContent":["import { Matrix } from './Matrix';\nimport { ObservablePoint } from './ObservablePoint';\n\n// eslint-disable-next-line @typescript-eslint/no-empty-interface\nexport interface Transform extends GlobalMixins.Transform {}\n\n/**\n * Transform that takes care about its versions.\n * @memberof PIXI\n */\nexport class Transform\n{\n /**\n * A default (identity) transform.\n * @static\n * @type {PIXI.Transform}\n */\n public static readonly IDENTITY = new Transform();\n\n /** The world transformation matrix. */\n public worldTransform: Matrix;\n\n /** The local transformation matrix. */\n public localTransform: Matrix;\n\n /** The coordinate of the object relative to the local coordinates of the parent. */\n public position: ObservablePoint;\n\n /** The scale factor of the object. */\n public scale: ObservablePoint;\n\n /** The pivot point of the displayObject that it rotates around. */\n public pivot: ObservablePoint;\n\n /** The skew amount, on the x and y axis. */\n public skew: ObservablePoint;\n\n /** The locally unique ID of the parent's world transform used to calculate the current world transformation matrix. */\n public _parentID: number;\n\n /** The locally unique ID of the world transform. */\n _worldID: number;\n\n /** The rotation amount. */\n protected _rotation: number;\n\n /**\n * The X-coordinate value of the normalized local X axis,\n * the first column of the local transformation matrix without a scale.\n */\n protected _cx: number;\n\n /**\n * The Y-coordinate value of the normalized local X axis,\n * the first column of the local transformation matrix without a scale.\n */\n protected _sx: number;\n\n /**\n * The X-coordinate value of the normalized local Y axis,\n * the second column of the local transformation matrix without a scale.\n */\n protected _cy: number;\n\n /**\n * The Y-coordinate value of the normalized local Y axis,\n * the second column of the local transformation matrix without a scale.\n */\n protected _sy: number;\n\n /** The locally unique ID of the local transform. */\n protected _localID: number;\n\n /** The locally unique ID of the local transform used to calculate the current local transformation matrix. */\n protected _currentLocalID: number;\n\n constructor()\n {\n this.worldTransform = new Matrix();\n this.localTransform = new Matrix();\n this.position = new ObservablePoint(this.onChange, this, 0, 0);\n this.scale = new ObservablePoint(this.onChange, this, 1, 1);\n this.pivot = new ObservablePoint(this.onChange, this, 0, 0);\n this.skew = new ObservablePoint(this.updateSkew, this, 0, 0);\n\n this._rotation = 0;\n this._cx = 1;\n this._sx = 0;\n this._cy = 0;\n this._sy = 1;\n this._localID = 0;\n this._currentLocalID = 0;\n\n this._worldID = 0;\n this._parentID = 0;\n }\n\n /** Called when a value changes. */\n protected onChange(): void\n {\n this._localID++;\n }\n\n /** Called when the skew or the rotation changes. */\n protected updateSkew(): void\n {\n this._cx = Math.cos(this._rotation + this.skew.y);\n this._sx = Math.sin(this._rotation + this.skew.y);\n this._cy = -Math.sin(this._rotation - this.skew.x); // cos, added PI/2\n this._sy = Math.cos(this._rotation - this.skew.x); // sin, added PI/2\n\n this._localID++;\n }\n\n /** Updates the local transformation matrix. */\n updateLocalTransform(): void\n {\n const lt = this.localTransform;\n\n if (this._localID !== this._currentLocalID)\n {\n // get the matrix values of the displayobject based on its transform properties..\n lt.a = this._cx * this.scale.x;\n lt.b = this._sx * this.scale.x;\n lt.c = this._cy * this.scale.y;\n
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