pixi.js/lib/scene/sprite-nine-slice/NineSliceGeometry.mjs.map

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{"version":3,"file":"NineSliceGeometry.mjs","sources":["../../../src/scene/sprite-nine-slice/NineSliceGeometry.ts"],"sourcesContent":["import { type PointData } from '../../maths/point/PointData';\nimport { PlaneGeometry } from '../mesh-plane/PlaneGeometry';\n\n/**\n * Options for the NineSliceGeometry.\n * @category scene\n * @advanced\n */\nexport interface NineSliceGeometryOptions\n{\n\n    /** The width of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */\n    width?: number\n    /** The height of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */\n    height?: number\n    /** The original width of the texture */\n    originalWidth?: number\n    /** The original height of the texture */\n    originalHeight?: number\n    /** The width of the left column. */\n    leftWidth?: number\n    /** The height of the top row. */\n    topHeight?: number\n    /** The width of the right column. */\n    rightWidth?: number\n    /** The height of the bottom row. */\n    bottomHeight?: number\n\n    /** The anchor point of the NineSliceSprite. */\n    anchor?: PointData\n\n    /**\n     * The trim rectangle of the texture, describing the offset and size of the visible\n     * pixel area within the original (unpadded) frame. When provided, UV coordinates are\n     * clamped to the trimmed region so that transparent padding in the atlas does not\n     * bleed into the rendered corners/edges.\n     * @default null\n     */\n    trim?: { x: number; y: number; width: number; height: number } | null\n}\n\n/**\n * The NineSliceGeometry class allows you to create a NineSlicePlane object.\n * @category scene\n * @advanced\n */\nexport class NineSliceGeometry extends PlaneGeometry\n{\n    /** The default options for the NineSliceGeometry. */\n    public static defaultOptions: NineSliceGeometryOptions = {\n        /** The width of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */\n        width: 100,\n        /** The height of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */\n        height: 100,\n        /** The width of the left column. */\n        leftWidth: 10,\n        /** The height of the top row. */\n        topHeight: 10,\n        /** The width of the right column. */\n        rightWidth: 10,\n        /** The height of the bottom row. */\n        bottomHeight: 10,\n\n        /** The original width of the texture */\n        originalWidth: 100,\n        /** The original height of the texture */\n        originalHeight: 100,\n    };\n\n    /** @internal */\n    public _leftWidth: number;\n    /** @internal */\n    public _rightWidth: number;\n    /** @internal */\n    public _topHeight: number;\n    /** @internal */\n    public _bottomHeight: number;\n\n    private _originalWidth: number;\n    private _originalHeight: number;\n    private _trimX: number;\n    private _trimY: number;\n    private _trimWidth: number;\n    private _trimHeight: number;\n    private _anchorX: any;\n    private _anchorY: number;\n\n    constructor(options: NineSliceGeometryOptions = {})\n    {\n        options = { ...NineSliceGeometry.defaultOptions, ...options };\n\n        super({\n            width: options.width,\n            height: options.height,\n            verticesX: 4,\n            verticesY: 4,\n        });\n\n        // Initialise trim fields before update() so updateUvs() has valid values\n        this._trimX = 0;\n        this._trimY = 0;\n        this._trimWidth = options.originalWidth ?? NineSliceGeometry.defaultOptions.originalWidth;\n        this._trimHeight = options.originalHeight ?? NineSliceGeometry.defaultOptions.originalHeight;\n\n        this.update(options);\n    }\n\n    /**\n     * Updates the NineSliceGeometry with the options.\n     * @param options - The options of the NineSliceGeometry.\n     */\n    public update(options: NineSliceGeometryOptions)\n    {\n        this.width = options.width ?? this.width;\n        this.height = options.height ?? this.height;\n        this._originalWidth = options.originalWidth ?? this._originalWidth;\n        this._originalHeight = options.originalHeight ?? this._originalHeight;\n        this._leftWidth = options.leftWidth ?? this._leftWidth;\n        this._rightWidth = options.rightWidth ?? this._rightWidth;\n        this._topHeight = options.topHeight ?? this._topHeight;\n        this._bottomHeight = options.bottomHeight ?? this._bottomHeight;\n\n        this._anchorX = options.anchor?.x;\n        this._anchorY = options.anchor?.y;\n\n        // Update trim values whenever they are explicitly provided (including null to reset)\n        if (options.trim !== undefined)\n        {\n            this._trimX = options.trim?.x ?? 0;\n            this._trimY = options.trim?.y ?? 0;\n            this._trimWidth = options.trim?.width ?? this._originalWidth;\n            this._trimHeight = options.trim?.height ?? this._originalHeight;\n        }\n        else\n        {\n            this._trimWidth = this._originalWidth;\n            this._trimHeight = this._originalHeight;\n        }\n\n        this.updateUvs();\n        this.updatePositions();\n    }\n\n    /** Updates the positions of the vertices. */\n    public updatePositions()\n    {\n        const p = this.positions;\n        const {\n            width,\n            height,\n            _leftWidth,\n            _rightWidth,\n            _topHeight,\n            _bottomHeight,\n            _anchorX,\n            _anchorY,\n        } = this;\n\n        const w = _leftWidth + _rightWidth;\n        const scaleW = width > w ? 1.0 : width / w;\n\n        const h = _topHeight + _bottomHeight;\n        const scaleH = height > h ? 1.0 : height / h;\n\n        const scale = Math.min(scaleW, scaleH);\n\n        const anchorOffsetX = _anchorX * width;\n        const anchorOffsetY = _anchorY * height;\n\n        p[0] = p[8] = p[16] = p[24] = -anchorOffsetX;\n        p[2] = p[10] = p[18] = p[26] = (_leftWidth * scale) - anchorOffsetX;\n        p[4] = p[12] = p[20] = p[28] = width - (_rightWidth * scale) - anchorOffsetX;\n        p[6] = p[14] = p[22] = p[30] = width - anchorOffsetX;\n\n        p[1] = p[3] = p[5] = p[7] = -anchorOffsetY;\n        p[9] = p[11] = p[13] = p[15] = (_topHeight * scale) - anchorOffsetY;\n        p[17] = p[19] = p[21] = p[23] = height - (_bottomHeight * scale) - anchorOffsetY;\n        p[25] = p[27] = p[29] = p[31] = height - anchorOffsetY;\n\n        this.getBuffer('aPosition').update();\n    }\n\n    /** Updates the UVs of the vertices. */\n    public updateUvs()\n    {\n        const uvs = this.uvs;\n\n        const origW = this._originalWidth;\n        const origH = this._originalHeight;\n\n        // Compute the UV bounds for the trimmed region within the original texture space.\n        // When the texture has no trim, these default to [0, 1] (the full orig area).\n        // When the texture is trimmed, UV coordinates are offset so that only the visible\n        // pixel area is sampled, preventing transparent padding from bleeding into corners.\n        const u0 = this._trimX / origW;\n        const v0 = this._trimY / origH;\n        const u1 = (this._trimX + this._trimWidth) / origW;\n        const v1 = (this._trimY + this._trimHeight) / origH;\n\n        uvs[0] = uvs[8] = uvs[16] = uvs[24] = u0;\n        uvs[1] = uvs[3] = uvs[5] = uvs[7] = v0;\n\n        uvs[6] = uvs[14] = uvs[22] = uvs[30] = u1;\n        uvs[25] = uvs[27] = uvs[29] = uvs[31] = v1;\n\n        const _uvw = 1.0 / origW;\n        const _uvh = 1.0 / origH;\n\n        uvs[2] = uvs[10] = uvs[18] = uvs[26] = u0 + (_uvw * this._leftWidth);\n        uvs[9] = uvs[11] = uvs[13] = uvs[15] = v0 + (_uvh * this._topHeight);\n\n        uvs[4] = uvs[12] = uvs[20] = uvs[28] = u1 - (_uvw * this._rightWidth);\n        uvs[17] = uvs[19] = uvs[21] = uvs[23] = v1 - (_uvh * this._bottomHeight);\n\n        this.getBuffer('aUV').update();\n    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