@tolokoban/tgd
Version:
ToloGameDev library for WebGL2
329 lines • 29.6 kB
JavaScript
import { __awaiter } from "tslib";
/**
* GLTF specs can be found here:
* https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html
*/
import { TgdDataset } from "./../../dataset/index.js";
import { parseGLB } from "./parser.js";
import { assertTgdTypeArrayForElements, } from "./../../types/index.js";
import { TgdGeometry } from "./../../geometry/index.js";
import { TgdTexture2D } from "./../../texture/index.js";
export class TgdParserGLTransfertFormatBinary {
constructor(content) {
this.cacheImages = new Map();
this.cacheImageURLs = new Map();
this.cacheBufferViewDatas = new Map();
try {
const data = parseGLB(content);
this.gltf = data.gltf;
this.chunks = data.chunks;
}
catch (error) {
const message = error instanceof Error ? error.message : JSON.stringify(error);
throw new Error(`[TgdParserGLTransfertFormatBinary] ${message}`);
}
}
get fileSize() {
return (12 + this.chunks.reduce((size, chunk) => size + chunk.byteLength, 0));
}
getScenes() {
var _a;
return (_a = this.gltf.scenes) !== null && _a !== void 0 ? _a : [];
}
getScene(sceneIndex) {
var _a;
const scene = (_a = this.gltf.scenes) === null || _a === void 0 ? void 0 : _a[sceneIndex];
if (!scene) {
throw new Error(`Asset has no scene with index #${sceneIndex}!`);
}
return scene;
}
getNode(nodeIndex) {
var _a;
const node = (_a = this.gltf.nodes) === null || _a === void 0 ? void 0 : _a[nodeIndex];
if (!node) {
throw new Error(`Asset has no node with index #${nodeIndex}!`);
}
return node;
}
getNodeByName(nodeName) {
const nodes = this.gltf.nodes;
if (!nodes)
return;
for (const node of nodes) {
if (node.name === nodeName)
return node;
}
}
getNodeByNameOrThrow(nodeName) {
var _a;
const node = this.getNodeByName(nodeName);
if (node)
return node;
throw new Error(`Unknown node "${nodeName}"!\nAvailable names:${((_a = this.gltf.nodes) !== null && _a !== void 0 ? _a : [])
.map((node, index) => `\n - ${typeof node.name === "string"
? JSON.stringify(node.name)
: `#${index}`}`)
.join("")}`);
}
getAccessor(accessorIndex = 0) {
var _a;
const accessor = (_a = this.gltf.accessors) === null || _a === void 0 ? void 0 : _a[accessorIndex];
if (!accessor) {
throw new Error(`Asset has no accessor with index #${accessorIndex}!`);
}
return accessor;
}
getMaterial(materialIndex) {
var _a;
const material = (_a = this.gltf.materials) === null || _a === void 0 ? void 0 : _a[materialIndex];
if (!material) {
throw new Error(`Asset has no material with index #${materialIndex}!`);
}
return material;
}
getMesh(meshIndex = 0) {
var _a;
const mesh = (_a = this.gltf.meshes) === null || _a === void 0 ? void 0 : _a[meshIndex];
if (!mesh) {
throw new Error(`Asset has no mesh with index #${meshIndex}!`);
}
return mesh;
}
getMeshPrimitive(meshIndex = 0, primitiveIndex = 0) {
const mesh = this.getMesh(meshIndex);
const primitive = mesh.primitives[primitiveIndex];
if (!primitive) {
throw new Error(`Asset has no primitive #${primitiveIndex} in mesh #${meshIndex}!`);
}
return primitive;
}
getMeshPrimitiveIndices(meshIndex = 0, primitiveIndex = 0) {
var _a, _b;
const primitive = this.getMeshPrimitive(meshIndex, primitiveIndex);
const accessor = this.getAccessor((_a = primitive.indices) !== null && _a !== void 0 ? _a : 0);
const elements = this.getBufferViewData((_b = accessor.bufferView) !== null && _b !== void 0 ? _b : 0, accessor.componentType);
assertTgdTypeArrayForElements(elements);
return elements;
}
getAccessorByAttributeName(primitive, attribName) {
const { attributes } = primitive;
if (!attributes || Object.keys(attributes).length === 0)
throw new Error("No attributes found!");
const accessorIndex = attributes[attribName];
if (typeof accessorIndex !== "number") {
throw new TypeError(`No attribute with name "${attribName}"!\nAvailable names are: ${Object.keys(attributes)
.map(name => JSON.stringify(name))
.join(", ")}.`);
}
try {
return this.getAccessor(accessorIndex);
}
catch (error) {
const message = error instanceof Error ? error.message : JSON.stringify(error);
throw new Error(`Attribute "${attribName}" pointed to an inexisting accessor!\n${message}`);
}
}
createTexture2D(context, textureIndex) {
var _a, _b, _c, _d, _e;
const gltfTex = (_a = this.gltf.textures) === null || _a === void 0 ? void 0 : _a[textureIndex];
if (!gltfTex) {
throw new Error(`Asset has no texture with index #${textureIndex}!`);
}
const source = (_e = (_b = gltfTex.source) !== null && _b !== void 0 ? _b : (_d = (_c = gltfTex.extensions) === null || _c === void 0 ? void 0 : _c.EXT_texture_webp) === null || _d === void 0 ? void 0 : _d.source) !== null && _e !== void 0 ? _e : 0;
const url = this.getImageURL(source);
const texture = new TgdTexture2D(context);
if (url) {
loadImage(url)
.then(bmp => {
if (bmp)
texture.loadBitmap(bmp);
else
console.error("Unable to load this file:", url);
})
.catch(console.error);
}
else {
console.error(`[GLTF] texture index #${textureIndex} is empty!`);
}
return texture;
}
loadImage(imageIndex) {
return __awaiter(this, void 0, void 0, function* () {
const fromCache = this.cacheImages.get(imageIndex);
if (fromCache)
return fromCache;
const url = this.getImageURL(imageIndex);
if (!url)
return;
const promise = new Promise((resolve, reject) => {
const img = new Image();
img.src = url;
img.addEventListener("load", () => {
resolve(img);
});
img.addEventListener("error", () => {
var _a;
console.error(`Unable to load image #${imageIndex}!`, (_a = this.gltf.images) === null || _a === void 0 ? void 0 : _a[imageIndex]);
reject();
});
});
this.cacheImages.set(imageIndex, promise);
return promise;
});
}
getImageURL(imageIndex) {
var _a;
const fromCache = this.cacheImageURLs.get(imageIndex);
if (fromCache)
return fromCache;
const { gltf } = this;
const image = (_a = gltf.images) === null || _a === void 0 ? void 0 : _a[imageIndex];
if (!image)
return;
if (image.uri)
return image.uri;
if (typeof image.bufferView !== "number")
return;
const buffer = this.getBufferViewData(image.bufferView, "Uint8");
if (!buffer)
return;
const blob = new Blob([buffer], {
type: image.mimeType,
});
const url = URL.createObjectURL(blob);
this.cacheImageURLs.set(imageIndex, url);
return url;
}
getBufferViewData(accessor, type = "Float32") {
var _a, _b, _c, _d, _e;
if (typeof accessor !== "number") {
return this.getBufferViewData((_a = accessor.bufferView) !== null && _a !== void 0 ? _a : 0, accessor.componentType);
}
const bufferViewIndex = accessor;
const fromCache = this.cacheBufferViewDatas.get(bufferViewIndex);
if (fromCache)
return fromCache;
const { gltf } = this;
const bufferView = (_b = gltf.bufferViews) === null || _b === void 0 ? void 0 : _b[bufferViewIndex];
if (!bufferView)
throw new Error(`No bufferView with index #${bufferViewIndex}!`);
const buffer = this.chunks[bufferView.buffer];
const byteOffset = (_c = bufferView.byteOffset) !== null && _c !== void 0 ? _c : 0;
const data = buffer.slice(byteOffset, byteOffset + bufferView.byteLength);
const view = figureOutView(data, convertTypeToNumber((_e = type !== null && type !== void 0 ? type : (_d = this.findAccessorForBufferView(bufferViewIndex)) === null || _d === void 0 ? void 0 : _d.componentType) !== null && _e !== void 0 ? _e : "Float32"));
this.cacheBufferViewDatas.set(bufferViewIndex, view);
return view;
}
findAccessorForBufferView(bufferViewIndex) {
var _a;
return ((_a = this.gltf.accessors) !== null && _a !== void 0 ? _a : []).find(accessor => accessor.bufferView === bufferViewIndex);
}
setAttrib(dataset, attribName, meshIndex = 0, primitiveIndex = 0, primitiveAttribName) {
var _a, _b, _c, _d, _e;
const { gltf } = this;
const accessorIndex = (_b = (_a = gltf.meshes) === null || _a === void 0 ? void 0 : _a[meshIndex].primitives[primitiveIndex].attributes[primitiveAttribName !== null && primitiveAttribName !== void 0 ? primitiveAttribName : attribName]) !== null && _b !== void 0 ? _b : -1;
const accessor = (_c = gltf.accessors) === null || _c === void 0 ? void 0 : _c[accessorIndex];
if (!accessor) {
throw new Error(`No attribute "${primitiveAttribName !== null && primitiveAttribName !== void 0 ? primitiveAttribName : attribName}" for primitive #${primitiveIndex} of mesh #${meshIndex}!`);
}
const bufferViewIndex = (_d = accessor.bufferView) !== null && _d !== void 0 ? _d : 0;
const bufferView = (_e = gltf.bufferViews) === null || _e === void 0 ? void 0 : _e[bufferViewIndex];
if (!bufferView) {
throw new Error(`No bufferView with index #${bufferViewIndex}!`);
}
const view = this.getBufferViewData(bufferViewIndex, accessor.componentType);
dataset.set(attribName, view, {
byteStride: bufferView.byteStride,
byteOffset: accessor.byteOffset,
count: accessor.count,
});
}
makeGeometry({ computeNormals, meshIndex = 0, primitiveIndex = 0, attPositionName = "POSITION", attNormalName = "NORMAL", attTextureCoordsName = "TEXCOORD_0", } = {}) {
const primitive = this.getMeshPrimitive(meshIndex, primitiveIndex);
try {
const { attributes } = primitive;
if (!attributes)
throw new Error("No attributes found!");
const elements = this.getMeshPrimitiveIndices(meshIndex, primitiveIndex);
const definition = {
[attPositionName]: "vec3",
};
if (typeof attributes[attNormalName] === "string") {
definition[attNormalName] = "vec3";
}
if (typeof attributes[attTextureCoordsName] === "string") {
definition[attTextureCoordsName] = "vec2";
}
const dataset = new TgdDataset(definition);
dataset.set(attPositionName, returnFloat32Array(this.getBufferViewData(this.getAccessorByAttributeName(primitive, attPositionName))));
if (typeof attributes[attNormalName] === "string") {
dataset.set(attNormalName, returnFloat32Array(this.getBufferViewData(this.getAccessorByAttributeName(primitive, attNormalName))));
}
if (typeof attributes[attTextureCoordsName] === "string") {
dataset.set(attTextureCoordsName, returnFloat32Array(this.getBufferViewData(this.getAccessorByAttributeName(primitive, attTextureCoordsName))));
}
return new TgdGeometry({
computeNormalsIfMissing: computeNormals,
dataset,
elements,
attPosition: attPositionName,
attNormal: attNormalName,
attUV: attTextureCoordsName,
});
}
catch (error) {
const message = error instanceof Error ? error.message : JSON.stringify(error);
throw new Error(`Error in primitive #${primitiveIndex} of mesh #${meshIndex}:\n${message}`);
}
}
}
function figureOutView(data, componentType) {
switch (componentType) {
case 5120:
return new Int8Array(data);
case 5121:
return new Uint8Array(data);
case 5122:
return new Int16Array(data);
case 5123:
return new Uint16Array(data);
case 5125:
return new Uint32Array(data);
default:
return new Float32Array(data);
}
}
function convertTypeToNumber(type) {
if (typeof type === "number")
return type;
switch (type) {
case "Int8":
return 5120;
case "Uint8":
return 5121;
case "Int16":
return 5122;
case "Uint16":
return 5123;
case "Uint32":
return 5125;
default:
return WebGL2RenderingContext.FLOAT;
}
throw new Error("Function not implemented.");
}
function returnFloat32Array(data) {
if (data instanceof Float32Array)
return data;
throw new Error("We were expecting a Float32Array!");
}
function loadImage(url) {
return new Promise(resolve => {
const img = new Image();
img.src = url;
img.addEventListener("load", () => resolve(img));
img.addEventListener("error", () => resolve(null));
});
}
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