web-ifc-viewer/dist/utils/ThreeUtils.js

IFC viewer

import * as THREE from 'three';
export function RightToLeftHand(vector) {
    return new THREE.Vector3(vector.x, -vector.z, vector.y);
}
const basesRegex = /^([+-][xyz])([+-][xyz])([+-][xyz])$/i;
const nameToIndex = { x: 0, y: 1, z: 2 };
const orderedVectors = [new THREE.Vector3(), new THREE.Vector3(), new THREE.Vector3()];
export function stringToAxes(axesString) {
    if (!basesRegex.test(axesString)) {
        return null;
    }
    axesString = axesString.toLowerCase();
    // @ts-ignore
    return axesString
        .match(basesRegex)
        .splice(1, 3)
        .map((str) => {
        const negative = str[0] === '-';
        const name = str[1];
        return { negative, name };
    });
}
export function disposeMeshRecursively(mesh) {
    mesh.removeFromParent();
    if (mesh.geometry)
        mesh.geometry.dispose();
    if (mesh.material) {
        if (Array.isArray(mesh.material))
            mesh.material.forEach((mat) => mat.dispose());
        else
            mesh.material.dispose();
    }
    if (mesh.children && mesh.children.length) {
        mesh.children.forEach((child) => disposeMeshRecursively(child));
    }
    mesh.children.length = 0;
}
export function getBasisTransform(from, to, targetMatrix) {
    if (!basesRegex.test(from)) {
        return;
    }
    if (!basesRegex.test(to)) {
        return;
    }
    const fromAxes = stringToAxes(from);
    const toAxes = stringToAxes(to);
    if (!fromAxes || !toAxes)
        throw new Error();
    for (let i = 0; i < 3; i++) {
        const fromAxis = fromAxes[i];
        const toAxis = toAxes[i];
        // @ts-ignore
        const fromIndex = nameToIndex[fromAxis.name];
        const equalNegative = fromAxis.negative === toAxis.negative;
        const vector = orderedVectors[fromIndex];
        vector.set(0, 0, 0);
        // @ts-ignore
        vector[toAxis.name] = equalNegative ? 1 : -1;
    }
    targetMatrix.makeBasis(orderedVectors[0], orderedVectors[1], orderedVectors[2]);
}
//# sourceMappingURL=ThreeUtils.js.map