MZC/KnowMathBot/frontend/node_modules/@pixi/mesh-extras/dist/cjs/mesh-extras.js

/*!
 * @pixi/mesh-extras - v6.5.10
 * Compiled Thu, 06 Jul 2023 15:25:11 UTC
 *
 * @pixi/mesh-extras is licensed under the MIT License.
 * http://www.opensource.org/licenses/mit-license
 */
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var mesh = require('@pixi/mesh');
var constants = require('@pixi/constants');
var core = require('@pixi/core');

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/* global Reflect, Promise */

var extendStatics = function(d, b) {
    extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) { if (b.hasOwnProperty(p)) { d[p] = b[p]; } } };
    return extendStatics(d, b);
};

function __extends(d, b) {
    extendStatics(d, b);
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
}

/**
 * @memberof PIXI
 */
var PlaneGeometry = /** @class */ (function (_super) {
    __extends(PlaneGeometry, _super);
    /**
     * @param width - The width of the plane.
     * @param height - The height of the plane.
     * @param segWidth - Number of horizontal segments.
     * @param segHeight - Number of vertical segments.
     */
    function PlaneGeometry(width, height, segWidth, segHeight) {
        if (width === void 0) { width = 100; }
        if (height === void 0) { height = 100; }
        if (segWidth === void 0) { segWidth = 10; }
        if (segHeight === void 0) { segHeight = 10; }
        var _this = _super.call(this) || this;
        _this.segWidth = segWidth;
        _this.segHeight = segHeight;
        _this.width = width;
        _this.height = height;
        _this.build();
        return _this;
    }
    /**
     * Refreshes plane coordinates
     * @private
     */
    PlaneGeometry.prototype.build = function () {
        var total = this.segWidth * this.segHeight;
        var verts = [];
        var uvs = [];
        var indices = [];
        var segmentsX = this.segWidth - 1;
        var segmentsY = this.segHeight - 1;
        var sizeX = (this.width) / segmentsX;
        var sizeY = (this.height) / segmentsY;
        for (var i = 0; i < total; i++) {
            var x = (i % this.segWidth);
            var y = ((i / this.segWidth) | 0);
            verts.push(x * sizeX, y * sizeY);
            uvs.push(x / segmentsX, y / segmentsY);
        }
        var totalSub = segmentsX * segmentsY;
        for (var i = 0; i < totalSub; i++) {
            var xpos = i % segmentsX;
            var ypos = (i / segmentsX) | 0;
            var value = (ypos * this.segWidth) + xpos;
            var value2 = (ypos * this.segWidth) + xpos + 1;
            var value3 = ((ypos + 1) * this.segWidth) + xpos;
            var value4 = ((ypos + 1) * this.segWidth) + xpos + 1;
            indices.push(value, value2, value3, value2, value4, value3);
        }
        this.buffers[0].data = new Float32Array(verts);
        this.buffers[1].data = new Float32Array(uvs);
        this.indexBuffer.data = new Uint16Array(indices);
        // ensure that the changes are uploaded
        this.buffers[0].update();
        this.buffers[1].update();
        this.indexBuffer.update();
    };
    return PlaneGeometry;
}(mesh.MeshGeometry));

/**
 * RopeGeometry allows you to draw a geometry across several points and then manipulate these points.
 *
 * ```js
 * for (let i = 0; i < 20; i++) {
 *     points.push(new PIXI.Point(i * 50, 0));
 * };
 * const rope = new PIXI.RopeGeometry(100, points);
 * ```
 * @memberof PIXI
 */
var RopeGeometry = /** @class */ (function (_super) {
    __extends(RopeGeometry, _super);
    /**
     * @param width - The width (i.e., thickness) of the rope.
     * @param points - An array of {@link PIXI.Point} objects to construct this rope.
     * @param textureScale - By default the rope texture will be stretched to match
     *     rope length. If textureScale is positive this value will be treated as a scaling
     *     factor and the texture will preserve its aspect ratio instead. To create a tiling rope
     *     set baseTexture.wrapMode to {@link PIXI.WRAP_MODES.REPEAT} and use a power of two texture,
     *     then set textureScale=1 to keep the original texture pixel size.
     *     In order to reduce alpha channel artifacts provide a larger texture and downsample -
     *     i.e. set textureScale=0.5 to scale it down twice.
     */
    function RopeGeometry(width, points, textureScale) {
        if (width === void 0) { width = 200; }
        if (textureScale === void 0) { textureScale = 0; }
        var _this = _super.call(this, new Float32Array(points.length * 4), new Float32Array(points.length * 4), new Uint16Array((points.length - 1) * 6)) || this;
        _this.points = points;
        _this._width = width;
        _this.textureScale = textureScale;
        _this.build();
        return _this;
    }
    Object.defineProperty(RopeGeometry.prototype, "width", {
        /**
         * The width (i.e., thickness) of the rope.
         * @readonly
         */
        get: function () {
            return this._width;
        },
        enumerable: false,
        configurable: true
    });
    /** Refreshes Rope indices and uvs */
    RopeGeometry.prototype.build = function () {
        var points = this.points;
        if (!points)
            { return; }
        var vertexBuffer = this.getBuffer('aVertexPosition');
        var uvBuffer = this.getBuffer('aTextureCoord');
        var indexBuffer = this.getIndex();
        // if too little points, or texture hasn't got UVs set yet just move on.
        if (points.length < 1) {
            return;
        }
        // if the number of points has changed we will need to recreate the arraybuffers
        if (vertexBuffer.data.length / 4 !== points.length) {
            vertexBuffer.data = new Float32Array(points.length * 4);
            uvBuffer.data = new Float32Array(points.length * 4);
            indexBuffer.data = new Uint16Array((points.length - 1) * 6);
        }
        var uvs = uvBuffer.data;
        var indices = indexBuffer.data;
        uvs[0] = 0;
        uvs[1] = 0;
        uvs[2] = 0;
        uvs[3] = 1;
        var amount = 0;
        var prev = points[0];
        var textureWidth = this._width * this.textureScale;
        var total = points.length; // - 1;
        for (var i = 0; i < total; i++) {
            // time to do some smart drawing!
            var index = i * 4;
            if (this.textureScale > 0) {
                // calculate pixel distance from previous point
                var dx = prev.x - points[i].x;
                var dy = prev.y - points[i].y;
                var distance = Math.sqrt((dx * dx) + (dy * dy));
                prev = points[i];
                amount += distance / textureWidth;
            }
            else {
                // stretch texture
                amount = i / (total - 1);
            }
            uvs[index] = amount;
            uvs[index + 1] = 0;
            uvs[index + 2] = amount;
            uvs[index + 3] = 1;
        }
        var indexCount = 0;
        for (var i = 0; i < total - 1; i++) {
            var index = i * 2;
            indices[indexCount++] = index;
            indices[indexCount++] = index + 1;
            indices[indexCount++] = index + 2;
            indices[indexCount++] = index + 2;
            indices[indexCount++] = index + 1;
            indices[indexCount++] = index + 3;
        }
        // ensure that the changes are uploaded
        uvBuffer.update();
        indexBuffer.update();
        this.updateVertices();
    };
    /** refreshes vertices of Rope mesh */
    RopeGeometry.prototype.updateVertices = function () {
        var points = this.points;
        if (points.length < 1) {
            return;
        }
        var lastPoint = points[0];
        var nextPoint;
        var perpX = 0;
        var perpY = 0;
        var vertices = this.buffers[0].data;
        var total = points.length;
        for (var i = 0; i < total; i++) {
            var point = points[i];
            var index = i * 4;
            if (i < points.length - 1) {
                nextPoint = points[i + 1];
            }
            else {
                nextPoint = point;
            }
            perpY = -(nextPoint.x - lastPoint.x);
            perpX = nextPoint.y - lastPoint.y;
            var perpLength = Math.sqrt((perpX * perpX) + (perpY * perpY));
            var num = this.textureScale > 0 ? this.textureScale * this._width / 2 : this._width / 2;
            perpX /= perpLength;
            perpY /= perpLength;
            perpX *= num;
            perpY *= num;
            vertices[index] = point.x + perpX;
            vertices[index + 1] = point.y + perpY;
            vertices[index + 2] = point.x - perpX;
            vertices[index + 3] = point.y - perpY;
            lastPoint = point;
        }
        this.buffers[0].update();
    };
    RopeGeometry.prototype.update = function () {
        if (this.textureScale > 0) {
            this.build(); // we need to update UVs
        }
        else {
            this.updateVertices();
        }
    };
    return RopeGeometry;
}(mesh.MeshGeometry));

/**
 * The rope allows you to draw a texture across several points and then manipulate these points
 *
 *```js
 * for (let i = 0; i < 20; i++) {
 *     points.push(new PIXI.Point(i * 50, 0));
 * };
 * let rope = new PIXI.SimpleRope(PIXI.Texture.from("snake.png"), points);
 *  ```
 * @memberof PIXI
 */
var SimpleRope = /** @class */ (function (_super) {
    __extends(SimpleRope, _super);
    /**
     * @param texture - The texture to use on the rope.
     * @param points - An array of {@link PIXI.Point} objects to construct this rope.
     * @param {number} textureScale - Optional. Positive values scale rope texture
     * keeping its aspect ratio. You can reduce alpha channel artifacts by providing a larger texture
     * and downsampling here. If set to zero, texture will be stretched instead.
     */
    function SimpleRope(texture, points, textureScale) {
        if (textureScale === void 0) { textureScale = 0; }
        var _this = this;
        var ropeGeometry = new RopeGeometry(texture.height, points, textureScale);
        var meshMaterial = new mesh.MeshMaterial(texture);
        if (textureScale > 0) {
            // attempt to set UV wrapping, will fail on non-power of two textures
            texture.baseTexture.wrapMode = constants.WRAP_MODES.REPEAT;
        }
        _this = _super.call(this, ropeGeometry, meshMaterial) || this;
        /**
         * re-calculate vertices by rope points each frame
         * @member {boolean}
         */
        _this.autoUpdate = true;
        return _this;
    }
    SimpleRope.prototype._render = function (renderer) {
        var geometry = this.geometry;
        if (this.autoUpdate || geometry._width !== this.shader.texture.height) {
            geometry._width = this.shader.texture.height;
            geometry.update();
        }
        _super.prototype._render.call(this, renderer);
    };
    return SimpleRope;
}(mesh.Mesh));

/**
 * The SimplePlane allows you to draw a texture across several points and then manipulate these points
 *
 *```js
 * for (let i = 0; i < 20; i++) {
 *     points.push(new PIXI.Point(i * 50, 0));
 * };
 * let SimplePlane = new PIXI.SimplePlane(PIXI.Texture.from("snake.png"), points);
 *  ```
 * @memberof PIXI
 */
var SimplePlane = /** @class */ (function (_super) {
    __extends(SimplePlane, _super);
    /**
     * @param texture - The texture to use on the SimplePlane.
     * @param verticesX - The number of vertices in the x-axis
     * @param verticesY - The number of vertices in the y-axis
     */
    function SimplePlane(texture, verticesX, verticesY) {
        var _this = this;
        var planeGeometry = new PlaneGeometry(texture.width, texture.height, verticesX, verticesY);
        var meshMaterial = new mesh.MeshMaterial(core.Texture.WHITE);
        _this = _super.call(this, planeGeometry, meshMaterial) || this;
        // lets call the setter to ensure all necessary updates are performed
        _this.texture = texture;
        _this.autoResize = true;
        return _this;
    }
    /**
     * Method used for overrides, to do something in case texture frame was changed.
     * Meshes based on plane can override it and change more details based on texture.
     */
    SimplePlane.prototype.textureUpdated = function () {
        this._textureID = this.shader.texture._updateID;
        var geometry = this.geometry;
        var _a = this.shader.texture, width = _a.width, height = _a.height;
        if (this.autoResize && (geometry.width !== width || geometry.height !== height)) {
            geometry.width = this.shader.texture.width;
            geometry.height = this.shader.texture.height;
            geometry.build();
        }
    };
    Object.defineProperty(SimplePlane.prototype, "texture", {
        get: function () {
            return this.shader.texture;
        },
        set: function (value) {
            // Track texture same way sprite does.
            // For generated meshes like NineSlicePlane it can change the geometry.
            // Unfortunately, this method might not work if you directly change texture in material.
            if (this.shader.texture === value) {
                return;
            }
            this.shader.texture = value;
            this._textureID = -1;
            if (value.baseTexture.valid) {
                this.textureUpdated();
            }
            else {
                value.once('update', this.textureUpdated, this);
            }
        },
        enumerable: false,
        configurable: true
    });
    SimplePlane.prototype._render = function (renderer) {
        if (this._textureID !== this.shader.texture._updateID) {
            this.textureUpdated();
        }
        _super.prototype._render.call(this, renderer);
    };
    SimplePlane.prototype.destroy = function (options) {
        this.shader.texture.off('update', this.textureUpdated, this);
        _super.prototype.destroy.call(this, options);
    };
    return SimplePlane;
}(mesh.Mesh));

/**
 * The Simple Mesh class mimics Mesh in PixiJS v4, providing easy-to-use constructor arguments.
 * For more robust customization, use {@link PIXI.Mesh}.
 * @memberof PIXI
 */
var SimpleMesh = /** @class */ (function (_super) {
    __extends(SimpleMesh, _super);
    /**
     * @param texture - The texture to use
     * @param {Float32Array} [vertices] - if you want to specify the vertices
     * @param {Float32Array} [uvs] - if you want to specify the uvs
     * @param {Uint16Array} [indices] - if you want to specify the indices
     * @param drawMode - the drawMode, can be any of the Mesh.DRAW_MODES consts
     */
    function SimpleMesh(texture, vertices, uvs, indices, drawMode) {
        if (texture === void 0) { texture = core.Texture.EMPTY; }
        var _this = this;
        var geometry = new mesh.MeshGeometry(vertices, uvs, indices);
        geometry.getBuffer('aVertexPosition').static = false;
        var meshMaterial = new mesh.MeshMaterial(texture);
        _this = _super.call(this, geometry, meshMaterial, null, drawMode) || this;
        _this.autoUpdate = true;
        return _this;
    }
    Object.defineProperty(SimpleMesh.prototype, "vertices", {
        /**
         * Collection of vertices data.
         * @type {Float32Array}
         */
        get: function () {
            return this.geometry.getBuffer('aVertexPosition').data;
        },
        set: function (value) {
            this.geometry.getBuffer('aVertexPosition').data = value;
        },
        enumerable: false,
        configurable: true
    });
    SimpleMesh.prototype._render = function (renderer) {
        if (this.autoUpdate) {
            this.geometry.getBuffer('aVertexPosition').update();
        }
        _super.prototype._render.call(this, renderer);
    };
    return SimpleMesh;
}(mesh.Mesh));

var DEFAULT_BORDER_SIZE = 10;
/**
 * The NineSlicePlane allows you to stretch a texture using 9-slice scaling. The corners will remain unscaled (useful
 * for buttons with rounded corners for example) and the other areas will be scaled horizontally and or vertically
 *
 *```js
 * let Plane9 = new PIXI.NineSlicePlane(PIXI.Texture.from('BoxWithRoundedCorners.png'), 15, 15, 15, 15);
 *  ```
 * <pre>
 *      A                          B
 *    +---+----------------------+---+
 *  C | 1 |          2           | 3 |
 *    +---+----------------------+---+
 *    |   |                      |   |
 *    | 4 |          5           | 6 |
 *    |   |                      |   |
 *    +---+----------------------+---+
 *  D | 7 |          8           | 9 |
 *    +---+----------------------+---+
 *  When changing this objects width and/or height:
 *     areas 1 3 7 and 9 will remain unscaled.
 *     areas 2 and 8 will be stretched horizontally
 *     areas 4 and 6 will be stretched vertically
 *     area 5 will be stretched both horizontally and vertically
 * </pre>
 * @memberof PIXI
 */
var NineSlicePlane = /** @class */ (function (_super) {
    __extends(NineSlicePlane, _super);
    /**
     * @param texture - The texture to use on the NineSlicePlane.
     * @param {number} [leftWidth=10] - size of the left vertical bar (A)
     * @param {number} [topHeight=10] - size of the top horizontal bar (C)
     * @param {number} [rightWidth=10] - size of the right vertical bar (B)
     * @param {number} [bottomHeight=10] - size of the bottom horizontal bar (D)
     */
    function NineSlicePlane(texture, leftWidth, topHeight, rightWidth, bottomHeight) {
        if (leftWidth === void 0) { leftWidth = DEFAULT_BORDER_SIZE; }
        if (topHeight === void 0) { topHeight = DEFAULT_BORDER_SIZE; }
        if (rightWidth === void 0) { rightWidth = DEFAULT_BORDER_SIZE; }
        if (bottomHeight === void 0) { bottomHeight = DEFAULT_BORDER_SIZE; }
        var _this = _super.call(this, core.Texture.WHITE, 4, 4) || this;
        _this._origWidth = texture.orig.width;
        _this._origHeight = texture.orig.height;
        /** The width of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */
        _this._width = _this._origWidth;
        /** The height of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */
        _this._height = _this._origHeight;
        _this._leftWidth = leftWidth;
        _this._rightWidth = rightWidth;
        _this._topHeight = topHeight;
        _this._bottomHeight = bottomHeight;
        // lets call the setter to ensure all necessary updates are performed
        _this.texture = texture;
        return _this;
    }
    NineSlicePlane.prototype.textureUpdated = function () {
        this._textureID = this.shader.texture._updateID;
        this._refresh();
    };
    Object.defineProperty(NineSlicePlane.prototype, "vertices", {
        get: function () {
            return this.geometry.getBuffer('aVertexPosition').data;
        },
        set: function (value) {
            this.geometry.getBuffer('aVertexPosition').data = value;
        },
        enumerable: false,
        configurable: true
    });
    /** Updates the horizontal vertices. */
    NineSlicePlane.prototype.updateHorizontalVertices = function () {
        var vertices = this.vertices;
        var scale = this._getMinScale();
        vertices[9] = vertices[11] = vertices[13] = vertices[15] = this._topHeight * scale;
        vertices[17] = vertices[19] = vertices[21] = vertices[23] = this._height - (this._bottomHeight * scale);
        vertices[25] = vertices[27] = vertices[29] = vertices[31] = this._height;
    };
    /** Updates the vertical vertices. */
    NineSlicePlane.prototype.updateVerticalVertices = function () {
        var vertices = this.vertices;
        var scale = this._getMinScale();
        vertices[2] = vertices[10] = vertices[18] = vertices[26] = this._leftWidth * scale;
        vertices[4] = vertices[12] = vertices[20] = vertices[28] = this._width - (this._rightWidth * scale);
        vertices[6] = vertices[14] = vertices[22] = vertices[30] = this._width;
    };
    /**
     * Returns the smaller of a set of vertical and horizontal scale of nine slice corners.
     * @returns Smaller number of vertical and horizontal scale.
     */
    NineSlicePlane.prototype._getMinScale = function () {
        var w = this._leftWidth + this._rightWidth;
        var scaleW = this._width > w ? 1.0 : this._width / w;
        var h = this._topHeight + this._bottomHeight;
        var scaleH = this._height > h ? 1.0 : this._height / h;
        var scale = Math.min(scaleW, scaleH);
        return scale;
    };
    Object.defineProperty(NineSlicePlane.prototype, "width", {
        /** The width of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */
        get: function () {
            return this._width;
        },
        set: function (value) {
            this._width = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(NineSlicePlane.prototype, "height", {
        /** The height of the NineSlicePlane, setting this will actually modify the vertices and UV's of this plane. */
        get: function () {
            return this._height;
        },
        set: function (value) {
            this._height = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(NineSlicePlane.prototype, "leftWidth", {
        /** The width of the left column. */
        get: function () {
            return this._leftWidth;
        },
        set: function (value) {
            this._leftWidth = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(NineSlicePlane.prototype, "rightWidth", {
        /** The width of the right column. */
        get: function () {
            return this._rightWidth;
        },
        set: function (value) {
            this._rightWidth = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(NineSlicePlane.prototype, "topHeight", {
        /** The height of the top row. */
        get: function () {
            return this._topHeight;
        },
        set: function (value) {
            this._topHeight = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(NineSlicePlane.prototype, "bottomHeight", {
        /** The height of the bottom row. */
        get: function () {
            return this._bottomHeight;
        },
        set: function (value) {
            this._bottomHeight = value;
            this._refresh();
        },
        enumerable: false,
        configurable: true
    });
    /** Refreshes NineSlicePlane coords. All of them. */
    NineSlicePlane.prototype._refresh = function () {
        var texture = this.texture;
        var uvs = this.geometry.buffers[1].data;
        this._origWidth = texture.orig.width;
        this._origHeight = texture.orig.height;
        var _uvw = 1.0 / this._origWidth;
        var _uvh = 1.0 / this._origHeight;
        uvs[0] = uvs[8] = uvs[16] = uvs[24] = 0;
        uvs[1] = uvs[3] = uvs[5] = uvs[7] = 0;
        uvs[6] = uvs[14] = uvs[22] = uvs[30] = 1;
        uvs[25] = uvs[27] = uvs[29] = uvs[31] = 1;
        uvs[2] = uvs[10] = uvs[18] = uvs[26] = _uvw * this._leftWidth;
        uvs[4] = uvs[12] = uvs[20] = uvs[28] = 1 - (_uvw * this._rightWidth);
        uvs[9] = uvs[11] = uvs[13] = uvs[15] = _uvh * this._topHeight;
        uvs[17] = uvs[19] = uvs[21] = uvs[23] = 1 - (_uvh * this._bottomHeight);
        this.updateHorizontalVertices();
        this.updateVerticalVertices();
        this.geometry.buffers[0].update();
        this.geometry.buffers[1].update();
    };
    return NineSlicePlane;
}(SimplePlane));

exports.NineSlicePlane = NineSlicePlane;
exports.PlaneGeometry = PlaneGeometry;
exports.RopeGeometry = RopeGeometry;
exports.SimpleMesh = SimpleMesh;
exports.SimplePlane = SimplePlane;
exports.SimpleRope = SimpleRope;
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