101 lines
1.9 KiB
JavaScript
101 lines
1.9 KiB
JavaScript
import {
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BoxGeometry,
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Matrix4,
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Mesh,
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MeshBasicMaterial,
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Object3D
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} from 'three';
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class XRPlanes extends Object3D {
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constructor( renderer ) {
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super();
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const matrix = new Matrix4();
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const currentPlanes = new Map();
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const xr = renderer.xr;
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xr.addEventListener( 'planesdetected', event => {
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const frame = event.data;
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const planes = frame.detectedPlanes;
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const referenceSpace = xr.getReferenceSpace();
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let planeschanged = false;
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for ( const [ plane, mesh ] of currentPlanes ) {
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if ( planes.has( plane ) === false ) {
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mesh.geometry.dispose();
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mesh.material.dispose();
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this.remove( mesh );
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currentPlanes.delete( plane );
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planeschanged = true;
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}
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}
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for ( const plane of planes ) {
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if ( currentPlanes.has( plane ) === false ) {
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const pose = frame.getPose( plane.planeSpace, referenceSpace );
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matrix.fromArray( pose.transform.matrix );
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const polygon = plane.polygon;
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let minX = Number.MAX_SAFE_INTEGER;
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let maxX = Number.MIN_SAFE_INTEGER;
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let minZ = Number.MAX_SAFE_INTEGER;
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let maxZ = Number.MIN_SAFE_INTEGER;
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for ( const point of polygon ) {
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minX = Math.min( minX, point.x );
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maxX = Math.max( maxX, point.x );
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minZ = Math.min( minZ, point.z );
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maxZ = Math.max( maxZ, point.z );
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}
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const width = maxX - minX;
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const height = maxZ - minZ;
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const geometry = new BoxGeometry( width, 0.01, height );
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const material = new MeshBasicMaterial( { color: 0xffffff * Math.random() } );
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const mesh = new Mesh( geometry, material );
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mesh.position.setFromMatrixPosition( matrix );
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mesh.quaternion.setFromRotationMatrix( matrix );
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this.add( mesh );
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currentPlanes.set( plane, mesh );
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planeschanged = true;
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}
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}
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if ( planeschanged ) {
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this.dispatchEvent( { type: 'planeschanged' } );
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}
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} );
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}
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}
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export { XRPlanes };
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