微信小程序-省心预览工具
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/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated April 5, 2025. Replaces all prior versions.
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*
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* Copyright (c) 2013-2025, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software
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* or otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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import { Shader } from "./Shader.js";
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import { ManagedWebGLRenderingContext } from "./WebGL.js";
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export class Mesh {
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attributes;
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context;
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vertices;
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verticesBuffer = null;
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verticesLength = 0;
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dirtyVertices = false;
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indices;
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indicesBuffer = null;
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indicesLength = 0;
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dirtyIndices = false;
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elementsPerVertex = 0;
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getAttributes() { return this.attributes; }
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maxVertices() { return this.vertices.length / this.elementsPerVertex; }
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numVertices() { return this.verticesLength / this.elementsPerVertex; }
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setVerticesLength(length) {
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this.dirtyVertices = true;
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this.verticesLength = length;
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}
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getVertices() { return this.vertices; }
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maxIndices() { return this.indices.length; }
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numIndices() { return this.indicesLength; }
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setIndicesLength(length) {
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this.dirtyIndices = true;
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this.indicesLength = length;
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}
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getIndices() { return this.indices; }
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;
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getVertexSizeInFloats() {
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let size = 0;
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for (var i = 0; i < this.attributes.length; i++) {
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let attribute = this.attributes[i];
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size += attribute.numElements;
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}
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return size;
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}
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constructor(context, attributes, maxVertices, maxIndices) {
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this.attributes = attributes;
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this.context = context instanceof ManagedWebGLRenderingContext ? context : new ManagedWebGLRenderingContext(context);
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this.elementsPerVertex = 0;
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for (let i = 0; i < attributes.length; i++) {
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this.elementsPerVertex += attributes[i].numElements;
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}
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this.vertices = new Float32Array(maxVertices * this.elementsPerVertex);
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this.indices = new Uint16Array(maxIndices);
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this.context.addRestorable(this);
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}
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setVertices(vertices) {
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this.dirtyVertices = true;
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if (vertices.length > this.vertices.length)
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throw Error("Mesh can't store more than " + this.maxVertices() + " vertices");
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this.vertices.set(vertices, 0);
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this.verticesLength = vertices.length;
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}
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setIndices(indices) {
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this.dirtyIndices = true;
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if (indices.length > this.indices.length)
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throw Error("Mesh can't store more than " + this.maxIndices() + " indices");
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this.indices.set(indices, 0);
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this.indicesLength = indices.length;
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}
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draw(shader, primitiveType) {
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this.drawWithOffset(shader, primitiveType, 0, this.indicesLength > 0 ? this.indicesLength : this.verticesLength / this.elementsPerVertex);
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}
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drawWithOffset(shader, primitiveType, offset, count) {
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let gl = this.context.gl;
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if (this.dirtyVertices || this.dirtyIndices)
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this.update();
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this.bind(shader);
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if (this.indicesLength > 0) {
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gl.drawElements(primitiveType, count, gl.UNSIGNED_SHORT, offset * 2);
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}
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else {
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gl.drawArrays(primitiveType, offset, count);
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}
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this.unbind(shader);
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}
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bind(shader) {
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let gl = this.context.gl;
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gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);
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let offset = 0;
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for (let i = 0; i < this.attributes.length; i++) {
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let attrib = this.attributes[i];
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let location = shader.getAttributeLocation(attrib.name);
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gl.enableVertexAttribArray(location);
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gl.vertexAttribPointer(location, attrib.numElements, gl.FLOAT, false, this.elementsPerVertex * 4, offset * 4);
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offset += attrib.numElements;
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}
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if (this.indicesLength > 0)
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gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);
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}
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unbind(shader) {
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let gl = this.context.gl;
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for (let i = 0; i < this.attributes.length; i++) {
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let attrib = this.attributes[i];
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let location = shader.getAttributeLocation(attrib.name);
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gl.disableVertexAttribArray(location);
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}
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gl.bindBuffer(gl.ARRAY_BUFFER, null);
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if (this.indicesLength > 0)
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gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, null);
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}
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update() {
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let gl = this.context.gl;
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if (this.dirtyVertices) {
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if (!this.verticesBuffer) {
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this.verticesBuffer = gl.createBuffer();
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}
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gl.bindBuffer(gl.ARRAY_BUFFER, this.verticesBuffer);
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gl.bufferData(gl.ARRAY_BUFFER, this.vertices.subarray(0, this.verticesLength), gl.DYNAMIC_DRAW);
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this.dirtyVertices = false;
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}
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if (this.dirtyIndices) {
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if (!this.indicesBuffer) {
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this.indicesBuffer = gl.createBuffer();
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}
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gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.indicesBuffer);
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gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices.subarray(0, this.indicesLength), gl.DYNAMIC_DRAW);
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this.dirtyIndices = false;
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}
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}
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restore() {
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this.verticesBuffer = null;
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this.indicesBuffer = null;
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this.update();
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}
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dispose() {
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this.context.removeRestorable(this);
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let gl = this.context.gl;
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gl.deleteBuffer(this.verticesBuffer);
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gl.deleteBuffer(this.indicesBuffer);
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}
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}
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export class VertexAttribute {
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name;
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type;
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numElements;
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constructor(name, type, numElements) {
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this.name = name;
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this.type = type;
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this.numElements = numElements;
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}
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}
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export class Position2Attribute extends VertexAttribute {
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constructor() {
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super(Shader.POSITION, VertexAttributeType.Float, 2);
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}
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}
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export class Position3Attribute extends VertexAttribute {
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constructor() {
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super(Shader.POSITION, VertexAttributeType.Float, 3);
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}
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}
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export class TexCoordAttribute extends VertexAttribute {
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constructor(unit = 0) {
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super(Shader.TEXCOORDS + (unit == 0 ? "" : unit), VertexAttributeType.Float, 2);
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}
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}
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export class ColorAttribute extends VertexAttribute {
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constructor() {
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super(Shader.COLOR, VertexAttributeType.Float, 4);
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}
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}
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export class Color2Attribute extends VertexAttribute {
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constructor() {
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super(Shader.COLOR2, VertexAttributeType.Float, 4);
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}
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}
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export var VertexAttributeType;
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(function (VertexAttributeType) {
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VertexAttributeType[VertexAttributeType["Float"] = 0] = "Float";
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})(VertexAttributeType || (VertexAttributeType = {}));
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Line truncated
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