You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
2.7 KiB
JavaScript
135 lines
2.7 KiB
JavaScript
6 years ago
|
import { Ray } from '../math/Ray.js';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @author mrdoob / http://mrdoob.com/
|
||
|
|
* @author bhouston / http://clara.io/
|
||
|
|
* @author stephomi / http://stephaneginier.com/
|
||
|
|
*/
|
||
|
|
|
||
|
|
function Raycaster( origin, direction, near, far ) {
|
||
|
|
|
||
|
|
this.ray = new Ray( origin, direction );
|
||
|
|
// direction is assumed to be normalized (for accurate distance calculations)
|
||
|
|
|
||
|
|
this.near = near || 0;
|
||
|
|
this.far = far || Infinity;
|
||
|
|
|
||
|
|
this.params = {
|
||
|
|
Mesh: {},
|
||
|
|
Line: {},
|
||
|
|
LOD: {},
|
||
|
|
Points: { threshold: 1 },
|
||
|
|
Sprite: {}
|
||
|
|
};
|
||
|
|
|
||
|
|
Object.defineProperties( this.params, {
|
||
|
|
PointCloud: {
|
||
|
|
get: function () {
|
||
|
|
|
||
|
|
console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
|
||
|
|
return this.Points;
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function ascSort( a, b ) {
|
||
|
|
|
||
|
|
return a.distance - b.distance;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function intersectObject( object, raycaster, intersects, recursive ) {
|
||
|
|
|
||
|
|
if ( object.visible === false ) return;
|
||
|
|
|
||
|
|
object.raycast( raycaster, intersects );
|
||
|
|
|
||
|
|
if ( recursive === true ) {
|
||
|
|
|
||
|
|
var children = object.children;
|
||
|
|
|
||
|
|
for ( var i = 0, l = children.length; i < l; i ++ ) {
|
||
|
|
|
||
|
|
intersectObject( children[ i ], raycaster, intersects, true );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
Object.assign( Raycaster.prototype, {
|
||
|
|
|
||
|
|
linePrecision: 1,
|
||
|
|
|
||
|
|
set: function ( origin, direction ) {
|
||
|
|
|
||
|
|
// direction is assumed to be normalized (for accurate distance calculations)
|
||
|
|
|
||
|
|
this.ray.set( origin, direction );
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
setFromCamera: function ( coords, camera ) {
|
||
|
|
|
||
|
|
if ( ( camera && camera.isPerspectiveCamera ) ) {
|
||
|
|
|
||
|
|
this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
|
||
|
|
this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
|
||
|
|
|
||
|
|
} else if ( ( camera && camera.isOrthographicCamera ) ) {
|
||
|
|
|
||
|
|
this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
|
||
|
|
this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
console.error( 'THREE.Raycaster: Unsupported camera type.' );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
intersectObject: function ( object, recursive, optionalTarget ) {
|
||
|
|
|
||
|
|
var intersects = optionalTarget || [];
|
||
|
|
|
||
|
|
intersectObject( object, this, intersects, recursive );
|
||
|
|
|
||
|
|
intersects.sort( ascSort );
|
||
|
|
|
||
|
|
return intersects;
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
intersectObjects: function ( objects, recursive, optionalTarget ) {
|
||
|
|
|
||
|
|
var intersects = optionalTarget || [];
|
||
|
|
|
||
|
|
if ( Array.isArray( objects ) === false ) {
|
||
|
|
|
||
|
|
console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
|
||
|
|
return intersects;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( var i = 0, l = objects.length; i < l; i ++ ) {
|
||
|
|
|
||
|
|
intersectObject( objects[ i ], this, intersects, recursive );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
intersects.sort( ascSort );
|
||
|
|
|
||
|
|
return intersects;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
|
||
|
|
export { Raycaster };
|