lingo3d/lib/engine/physx/cookTrimeshGeometry.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

import computeMergedPxVertices from "./computeMergedPxVertices";
import { physxPtr } from "../../pointers/physxPtr";
import cookConvexGeometry from "./cookConvexGeometry";
const pxGeometryCache = new Map();
export default (src, manager) => {
    if (pxGeometryCache.has(src))
        return pxGeometryCache.get(src);
    const { PxBoundedData, Vector_PxU32, PxTriangleMeshDesc, getCooking, getInsertionCallback, PxTriangleMeshGeometry, destroy } = physxPtr[0];
    const [pointVector, count, index] = computeMergedPxVertices(manager);
    if (!index) {
        pointVector.clear();
        destroy(pointVector);
        return cookConvexGeometry(src, manager);
    }
    const { array } = index;
    const indexVector = new Vector_PxU32();
    for (let i = 0; i < index.count; i++)
        indexVector.push_back(array[i]);
    const points = new PxBoundedData();
    points.count = count;
    points.stride = 12;
    points.data = pointVector.data();
    const triangles = new PxBoundedData();
    triangles.count = indexVector.size() / 3;
    triangles.stride = 12;
    triangles.data = indexVector.data();
    const desc = new PxTriangleMeshDesc();
    desc.points = points;
    desc.triangles = triangles;
    const triangleMesh = getCooking().createTriangleMesh(desc, getInsertionCallback());
    const pxGeometry = new PxTriangleMeshGeometry(triangleMesh);
    pointVector.clear();
    destroy(pointVector);
    indexVector.clear();
    destroy(indexVector);
    destroy(points);
    destroy(triangles);
    destroy(desc);
    pxGeometryCache.set(src, pxGeometry);
    return pxGeometry;
};
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