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@esotericsoftware/spine-webgl

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/****************************************************************************** * Spine Runtimes License Agreement * Last updated July 28, 2023. Replaces all prior versions. * * Copyright (c) 2013-2023, Esoteric Software LLC * * Integration of the Spine Runtimes into software or otherwise creating * derivative works of the Spine Runtimes is permitted under the terms and * conditions of Section 2 of the Spine Editor License Agreement: * http://esotericsoftware.com/spine-editor-license * * Otherwise, it is permitted to integrate the Spine Runtimes into software or * otherwise create derivative works of the Spine Runtimes (collectively, * "Products"), provided that each user of the Products must obtain their own * Spine Editor license and redistribution of the Products in any form must * include this license and copyright notice. * * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE * SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ import { Shader } from "./Shader.js"; import { ManagedWebGLRenderingContext } from "./WebGL.js"; export class Mesh { attributes; context; vertices; verticesBuffer = null; verticesLength = 0; dirtyVertices = false; indices; indicesBuffer = null; indicesLength = 0; dirtyIndices = false; elementsPerVertex = 0; getAttributes() { return this.attributes; } maxVertices() { return this.vertices.length / this.elementsPerVertex; } numVertices() { return this.verticesLength / this.elementsPerVertex; } setVerticesLength(length) { this.dirtyVertices = true; this.verticesLength = length; } getVertices() { return this.vertices; } maxIndices() { return this.indices.length; } numIndices() { return this.indicesLength; } setIndicesLength(length) { this.dirtyIndices = true; this.indicesLength = length; } getIndices() { return this.indices; } ; getVertexSizeInFloats() { let size = 0; for (var i = 0; i < this.attributes.length; i++) { let attribute = this.attributes[i]; size += attribute.numElements; } return size; } constructor(context, attributes, maxVertices, maxIndices) { this.attributes = attributes; this.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context); this.elementsPerVertex = 0; for (let i = 0; i < attributes.length; i++) { this.elementsPerVertex += attributes[i].numElements; } this.vertices = new Float32Array(maxVertices * this.elementsPerVertex); this.indices = new Uint16Array(maxIndices); this.context.addRestorable(this); } setVertices(vertices) { this.dirtyVertices = true; if (vertices.length > this.vertices.length) throw Error("Mesh can't store more than " + this.maxVertices() + " vertices"); this.vertices.set(vertices, 0); this.verticesLength = vertices.length; } setIndices(indices) { this.dirtyIndices = true; if (indices.length > this.indices.length) throw Error("Mesh can't store more than " + this.maxIndices() + " indices"); this.indices.set(indices, 0); this.indicesLength = indices.length; } draw(shader, primitiveType) { this.drawWithOffset(shader, primitiveType, 0, this.indicesLength > 0 ? this.indicesLength : this.verticesLength / this.elementsPerVertex); } drawWithOffset(shader, primitiveType, offset, count) { let gl = this.context.gl; if (this.dirtyVertices || this.dirtyIndices) this.update(); this.bind(shader); if (this.indicesLength > 0) { gl.drawElements(primitiveType, count, gl.UNSIGNED_SHORT, offset * 2); } else { gl.drawArrays(primitiveType, offset, count); } this.unbind(shader); } bind(shader) { let gl = this.context.gl; gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer); let offset = 0; for (let i = 0; i < this.attributes.length; i++) { let attrib = this.attributes[i]; let location = shader.getAttributeLocation(attrib.name); gl.enableVertexAttribArray(location); gl.vertexAttribPointer(location, attrib.numElements, gl.FLOAT, false, this.elementsPerVertex * 4, offset * 4); offset += attrib.numElements; } if (this.indicesLength > 0) gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer); } unbind(shader) { let gl = this.context.gl; for (let i = 0; i < this.attributes.length; i++) { let attrib = this.attributes[i]; let location = shader.getAttributeLocation(attrib.name); gl.disableVertexAttribArray(location); } gl.bindBuffer(gl.ARRAY_BUFFER, null); if (this.indicesLength > 0) gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null); } update() { let gl = this.context.gl; if (this.dirtyVertices) { if (!this.verticesBuffer) { this.verticesBuffer = gl.createBuffer(); } gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer); gl.bufferData(gl.ARRAY_BUFFER, this.vertices.subarray(0, this.verticesLength), gl.DYNAMIC_DRAW); this.dirtyVertices = false; } if (this.dirtyIndices) { if (!this.indicesBuffer) { this.indicesBuffer = gl.createBuffer(); } gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer); gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices.subarray(0, this.indicesLength), gl.DYNAMIC_DRAW); this.dirtyIndices = false; } } restore() { this.verticesBuffer = null; this.indicesBuffer = null; this.update(); } dispose() { this.context.removeRestorable(this); let gl = this.context.gl; gl.deleteBuffer(this.verticesBuffer); gl.deleteBuffer(this.indicesBuffer); } } export class VertexAttribute { name; type; numElements; constructor(name, type, numElements) { this.name = name; this.type = type; this.numElements = numElements; } } export class Position2Attribute extends VertexAttribute { constructor() { super(Shader.POSITION, VertexAttributeType.Float, 2); } } export class Position3Attribute extends VertexAttribute { constructor() { super(Shader.POSITION, VertexAttributeType.Float, 3); } } export class TexCoordAttribute extends VertexAttribute { constructor(unit = 0) { super(Shader.TEXCOORDS + (unit == 0 ? "" : unit), VertexAttributeType.Float, 2); } } export class ColorAttribute extends VertexAttribute { constructor() { super(Shader.COLOR, VertexAttributeType.Float, 4); } } export class Color2Attribute extends VertexAttribute { constructor() { super(Shader.COLOR2, VertexAttributeType.Float, 4); } } export var VertexAttributeType; (function (VertexAttributeType) { VertexAttributeType[VertexAttributeType["Float"] = 0] = "Float"; })(VertexAttributeType || (VertexAttributeType = {})); //# 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