@tolokoban/tgd
Version:
ToloGameDev library for WebGL2
102 lines • 9.06 kB
JavaScript
import { TgdGeometry } from "./../../../geometry/index.js";
import { TgdDataset } from "./../../../dataset/index.js";
import { TgdVec3, TgdVec4 } from "./../../../math/index.js";
import { TgdMaterial, TgdMaterialDiffuse } from "./../../../material/index.js";
import { TgdLight } from "./../../../light/index.js";
import { TgdPainterMesh } from "../mesh/index.js";
/**
*/
export class TgdPainterMeshGltf extends TgdPainterMesh {
constructor(context, options) {
var _a;
const { asset, meshIndex = 0, primitiveIndex = 0, material: materialFactory = makeMaterial, } = options;
const color = figureColor(asset, meshIndex, primitiveIndex, context);
const material = materialFactory instanceof TgdMaterial
? materialFactory
: materialFactory({ color });
let computeNormals = false;
const attributes = {
POSITION: "vec3",
NORMAL: "vec3",
};
if (asset.getMeshPrimitive().attributes.TEXCOORD_0) {
attributes.TEXCOORD_0 = "vec2";
}
const dataset = new TgdDataset(attributes);
asset.setAttrib(dataset, "POSITION", meshIndex, primitiveIndex);
if (asset.getMeshPrimitive().attributes.NORMAL) {
asset.setAttrib(dataset, "NORMAL", meshIndex, primitiveIndex);
}
else {
// It seems to be impossible to retrieve normals.
// We will compute them with a smooth shading.
console.warn("No normals found! We will apply smooth shading.");
computeNormals = true;
}
if (asset.getMeshPrimitive().attributes.TEXCOORD_0) {
asset.setAttrib(dataset, "TEXCOORD_0", meshIndex, primitiveIndex);
}
super(context, {
geometry: new TgdGeometry({
dataset,
elements: asset.getMeshPrimitiveIndices(meshIndex, primitiveIndex),
drawMode: "TRIANGLES",
computeNormalsIfMissing: computeNormals,
}),
material,
});
this.name = (_a = options.name) !== null && _a !== void 0 ? _a : `Gltf/${this.name}`;
}
}
const DEFAULT_COLOR = new TgdVec4(0.9, 0.5, 0.1, 1);
function figureColor(asset, meshIndex, primitiveIndex, context) {
var _a, _b;
const primitive = asset.getMeshPrimitive(meshIndex, primitiveIndex);
const materialIndex = (_a = primitive.material) !== null && _a !== void 0 ? _a : -1;
if (materialIndex === -1)
return DEFAULT_COLOR;
const material = asset.getMaterial(materialIndex);
const textureEmissive = getTextureEmissive(context, asset, material);
const pbr = material.pbrMetallicRoughness;
if (!pbr)
return textureEmissive !== null && textureEmissive !== void 0 ? textureEmissive : DEFAULT_COLOR;
if (textureEmissive)
return textureEmissive;
if (pbr.baseColorTexture) {
const textureIndex = (_b = pbr.baseColorTexture) === null || _b === void 0 ? void 0 : _b.index;
const color = asset.createTexture2D(context, textureIndex !== null && textureIndex !== void 0 ? textureIndex : 0);
if (context.paint)
color.eventChange.addListener(context.paint);
return color;
}
if (pbr.baseColorFactor) {
return new TgdVec4(...pbr.baseColorFactor);
}
return DEFAULT_COLOR;
}
function makeMaterial({ color }) {
const material = new TgdMaterialDiffuse({
color,
specularIntensity: 0.3,
specularExponent: 80,
light: new TgdLight({
color: new TgdVec4(1, 1, 1, 1),
direction: new TgdVec3(1, 0.2, 0),
}),
ambient: new TgdLight({
color: new TgdVec4(0.2, 0.1, 0, 1),
}),
});
return material;
}
function getTextureEmissive(context, asset, material) {
var _a;
const emissive = material.emissiveTexture;
if (!emissive)
return null;
const color = asset.createTexture2D(context, (_a = emissive.index) !== null && _a !== void 0 ? _a : 0);
if (context.paint)
color.eventChange.addListener(context.paint);
return color;
}
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