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135 lines
2.7 KiB
JavaScript
135 lines
2.7 KiB
JavaScript
7 years ago
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import { Ray } from '../math/Ray.js';
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/**
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* @author mrdoob / http://mrdoob.com/
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* @author bhouston / http://clara.io/
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* @author stephomi / http://stephaneginier.com/
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*/
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function Raycaster( origin, direction, near, far ) {
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this.ray = new Ray( origin, direction );
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// direction is assumed to be normalized (for accurate distance calculations)
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this.near = near || 0;
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this.far = far || Infinity;
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this.params = {
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Mesh: {},
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Line: {},
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LOD: {},
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Points: { threshold: 1 },
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Sprite: {}
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};
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Object.defineProperties( this.params, {
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PointCloud: {
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get: function () {
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console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
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return this.Points;
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}
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}
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} );
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}
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function ascSort( a, b ) {
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return a.distance - b.distance;
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}
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function intersectObject( object, raycaster, intersects, recursive ) {
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if ( object.visible === false ) return;
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object.raycast( raycaster, intersects );
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if ( recursive === true ) {
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var children = object.children;
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for ( var i = 0, l = children.length; i < l; i ++ ) {
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intersectObject( children[ i ], raycaster, intersects, true );
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}
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}
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}
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Object.assign( Raycaster.prototype, {
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linePrecision: 1,
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set: function ( origin, direction ) {
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// direction is assumed to be normalized (for accurate distance calculations)
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this.ray.set( origin, direction );
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},
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setFromCamera: function ( coords, camera ) {
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if ( ( camera && camera.isPerspectiveCamera ) ) {
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this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
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this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
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} else if ( ( camera && camera.isOrthographicCamera ) ) {
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this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
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this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
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} else {
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console.error( 'THREE.Raycaster: Unsupported camera type.' );
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}
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},
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intersectObject: function ( object, recursive, optionalTarget ) {
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var intersects = optionalTarget || [];
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intersectObject( object, this, intersects, recursive );
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intersects.sort( ascSort );
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return intersects;
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},
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intersectObjects: function ( objects, recursive, optionalTarget ) {
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var intersects = optionalTarget || [];
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if ( Array.isArray( objects ) === false ) {
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console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
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return intersects;
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}
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for ( var i = 0, l = objects.length; i < l; i ++ ) {
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intersectObject( objects[ i ], this, intersects, recursive );
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}
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intersects.sort( ascSort );
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return intersects;
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}
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} );
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export { Raycaster };
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