awv3/plugins/sketcher/graphics/constraint.js

⚡ AWV3 embedded CAD

import * as THREE from 'three';
import Ccref from '../ccref';
import BaseGraphics from './base';

const geometry = new THREE.PlaneBufferGeometry(1, 1);
// rubber-band selection doesn't support empty (min=inf max=-inf) bounding boxes, put the box in the unlikely place
const box = new THREE.Box3(new THREE.Vector3(1e9, 1e9, 1e9), new THREE.Vector3(1e9, 1e9, 1e9));

export default class Constraint extends BaseGraphics {
    constructor(texture) {
        super();
        //flat-colored, highlightable quad
        this.localMesh = new THREE.Mesh(geometry, new THREE.MeshBasicMaterial({
            color: 0xdddddd, side: THREE.DoubleSide,
            polygonOffset: true, polygonOffsetFactor: -5.0, polygonOffsetUnits: -25.0,
        }));
        this.localMesh.type = 'SketcherMesh';
        this.localMesh.material.meta = {};
        this.localMesh.material.meta.box = box;
        //textured semi-transparent icon
        this.iconMesh = new THREE.Mesh(geometry, new THREE.MeshBasicMaterial({
            color: 0xffffff, side: THREE.DoubleSide,
            transparent: true, depthWrite: false, opacity: 1.0,
            //note: this huge offset is very hacky: it is here to prevent selected localMesh being on top
            polygonOffset: true, polygonOffsetFactor: -15.0, polygonOffsetUnits: -75.0,
        }));
        this.add(this.localMesh);
        this.localMesh.add(this.iconMesh);
    }

    updateFromGeomParams(geomParams) {
        super.updateFromGeomParams(geomParams);
        if (this.iconMesh.material.map === null)
            (async () => {
                this.iconMesh.material.map = await geomParams.texture;
                this.iconMesh.material.needsUpdate = true;
            })();
    }

    updateFromSketcherAndId(sketcher, id) {
        super.updateFromSketcherAndId(sketcher, id);
        sketcher.constraintVisualizer.updateConstraint(new Ccref(sketcher, id));
    }
}