Examples of com.jme3.bounding.BoundingSphere

com.jme3.bounding.BoundingSphere
BoundingSphere defines a sphere that defines a container for a group of vertices of a particular piece of geometry. This sphere defines a radius and a center.

A typical usage is to allow the class define the center and radius by calling either containAABB or averagePoints. A call to computeFramePoint in turn calls containAABB. @author Mark Powell @version $Id: BoundingSphere.java,v 1.59 2007/08/17 10:34:26 rherlitz Exp $

        final Sphere sphereMesh = new Sphere(10, 10, sphereRadius, false, true);


        Geometry sky = new Geometry("Sky", sphereMesh);
        sky.setQueueBucket(Bucket.Sky);
        sky.setCullHint(Spatial.CullHint.Never);
        sky.setModelBound(new BoundingSphere(Float.POSITIVE_INFINITY, Vector3f.ZERO));


        Material skyMat = new Material(assetManager, "Common/MatDefs/Misc/Sky.j3md");


        skyMat.setVector3("NormalScale", normalScale);
        if (sphereMap) {

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            Texture down, Vector3f normalScale, float sphereRadius) {
        final Sphere sphereMesh = new Sphere(10, 10, sphereRadius, false, true);
        Geometry sky = new Geometry("Sky", sphereMesh);
        sky.setQueueBucket(Bucket.Sky);
        sky.setCullHint(Spatial.CullHint.Never);
        sky.setModelBound(new BoundingSphere(Float.POSITIVE_INFINITY, Vector3f.ZERO));


        Image westImg = west.getImage();
        Image eastImg = east.getImage();
        Image northImg = north.getImage();
        Image southImg = south.getImage();

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        mesh = geom.getMesh();
        build();
    }
    
    private void build() {
        BoundingSphere bs = new BoundingSphere();
        bs.computeFromPoints(mesh.getFloatBuffer(VertexBuffer.Type.Position));
        meshBoundingSphereRadius = bs.getRadius();
        List<Vertex> vertexLookup = new ArrayList<Vertex>();
        initialize();
        
        gatherVertexData(mesh, vertexLookup);
        gatherIndexData(mesh, vertexLookup);

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    private int collideWithBoundingVolume(BoundingVolume bv,
            Matrix4f worldMatrix,
            CollisionResults results) {
        BoundingBox bbox;
        if (bv instanceof BoundingSphere) {
            BoundingSphere sphere = (BoundingSphere) bv;
            bbox = new BoundingBox(bv.getCenter().clone(), sphere.getRadius(),
                    sphere.getRadius(),
                    sphere.getRadius());
        } else if (bv instanceof BoundingBox) {
            bbox = new BoundingBox((BoundingBox) bv);
        } else {
            throw new UnsupportedCollisionException();
        }

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                case PROJECTION_TUBE:
                    BoundingTube bt = UVCoordinatesGenerator.getBoundingTube(geometries);
                    inputData = UVProjectionGenerator.tubeProjection(inputData, bt);
                    break;
                case PROJECTION_SPHERE:
                    BoundingSphere bs = UVCoordinatesGenerator.getBoundingSphere(geometries);
                    inputData = UVProjectionGenerator.sphereProjection(inputData, bs);
                    break;
                default:
                    throw new IllegalStateException("Unknown projection type: " + projection);
            }

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        mesh.updateBound();
        BoundingVolume bv = mesh.getBound();
        if (bv instanceof BoundingBox) {
            return (BoundingBox) bv;
        } else if (bv instanceof BoundingSphere) {
            BoundingSphere bs = (BoundingSphere) bv;
            float r = bs.getRadius();
            return new BoundingBox(bs.getCenter(), r, r, r);
        } else {
            throw new IllegalStateException("Unknown bounding volume type: " + bv.getClass().getName());
        }
    }

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     * @param geometries
     *            the list of geometries
     * @return bounding sphere of the given geometries
     */
    /* package */static BoundingSphere getBoundingSphere(List<Geometry> geometries) {
        BoundingSphere result = null;
        for (Geometry geometry : geometries) {
            BoundingSphere bs = UVCoordinatesGenerator.getBoundingSphere(geometry.getMesh());
            if (result == null) {
                result = bs;
            } else {
                result.merge(bs);
            }

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        BoundingVolume bv = mesh.getBound();
        if (bv instanceof BoundingBox) {
            BoundingBox bb = (BoundingBox) bv;
            float r = Math.max(bb.getXExtent(), bb.getYExtent());
            r = Math.max(r, bb.getZExtent());
            return new BoundingSphere(r, bb.getCenter());
        } else if (bv instanceof BoundingSphere) {
            return (BoundingSphere) bv;
        } else {
            throw new IllegalStateException("Unknown bounding volume type: " + bv.getClass().getName());
        }

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    private int collideWithBoundingVolume(BoundingVolume boundingVolume, CollisionResults results) {
        if (boundingVolume instanceof BoundingBox)
            return collideWithBoundingBox((BoundingBox)boundingVolume, results);
        else if(boundingVolume instanceof BoundingSphere) {
            BoundingSphere sphere = (BoundingSphere) boundingVolume;
            BoundingBox bbox = new BoundingBox(boundingVolume.getCenter().clone(), sphere.getRadius(),
                                                           sphere.getRadius(),
                                                           sphere.getRadius());
            return collideWithBoundingBox(bbox, results);
        }
        return 0;
    }

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      case AABB:
        BoundingBox aabb = (BoundingBox)bv;
        aabb.getExtent(extend);
        break;
      case Sphere:
        BoundingSphere bs = (BoundingSphere)bv;
        float f = bs.getRadius();
        extend.set(f, f, f);
        break;
      default:
        extend.set(1f,1f,1f);
      }

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