float dx = persp * ((p.x - v.x) / (v.width / 2.0f) - 1.0f)
/ internalCamera.getAspect();
float dy = -persp * ((p.y - v.y) / (v.height / 2.0f) - 1.0f)
/ internalCamera.getAspect();
N3Point3D src = new N3Point3D(dx * internalCamera.getZNear(), dy
* internalCamera.getZNear(), -internalCamera.getZNear());
N3Point3D dest = new N3Point3D(dx * internalCamera.getZFar(), dy
* internalCamera.getZFar(), -internalCamera.getZFar());
src = getAccMatrix().mult(src);
dest = getAccMatrix().mult(dest);