private final void unionBox(Rectangle3D bbox) {
if (bbox.isEmpty()) return;
Rectangle3D tbox = bbox.transformByMatrix(null, currentTrafo);
double[][] bnds = tbox.getBounds();
bound.xmin = Math.min(bound.xmin, bnds[0][0]);
bound.xmax = Math.max(bound.xmax, bnds[1][0]);
bound.ymin = Math.min(bound.ymin, bnds[0][1]);
bound.ymax = Math.max(bound.ymax, bnds[1][1]);
bound.zmin = Math.min(bound.zmin, bnds[0][2]);
bound.zmax = Math.max(bound.zmax, bnds[1][2]);
}
/** Convert result into Rectangle3D instance (see {@link de.jreality.util.Rectangle3D} */
public Rectangle3D getBoundingBox() {
Rectangle3D rect3d = new Rectangle3D();
double[][] bnds = rect3d.getBounds();
bnds[0][0] = getXmin();
bnds[1][0] = getXmax();
bnds[0][1] = getYmin();
bnds[1][1] = getYmax();
bnds[0][2] = getZmin();
bnds[1][2] = getZmax();
rect3d.setBounds(bnds);
if (Rn.isNan(bnds[0]) || Rn.isNan(bnds[1])) return Rectangle3D.EMPTY_BOX;
return rect3d;
}