/**
* {@inheritDoc}
*
* @see org.eclipse.draw3d.AbstractSurface#getYAxis(org.eclipse.draw3d.geometry.Vector3f)
*/
@Override
protected Vector3f getYAxis(Vector3f io_result) {
ICamera camera = m_scene.getCamera();
Vector3f yAxis = camera.getUpVector(io_result);
yAxis.scale(-1);
return yAxis;
}
/**
* Creates a new void surface for the given scene. The given depth value specifies the distance of
* the surface from the camera.
*
* @param i_host the host figure of this surface
* @param i_scene the scene
* @param i_depth the depth value of the surface
*/
public VoidSurface(IFigure3D i_host, IScene i_scene, float i_depth) {
if (i_host == null) throw new NullPointerException("i_host must not be null");
if (i_scene == null) throw new NullPointerException("i_scene must not be null");
m_host = i_host;
m_scene = i_scene;
m_depth = i_depth;
m_scene.getCamera().addCameraListener(m_cameraListener);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.draw3d.ISurface#findFigureAt(int, int, org.eclipse.draw2d.TreeSearch)
*/
public IFigure findFigureAt(int i_sx, int i_sy, TreeSearch i_search) {
Point sLocation = Draw3DCache.getPoint();
Vector3f rayPoint = Draw3DCache.getVector3f();
try {
Picker picker = m_scene.getPicker();
ISurface currentSurface = picker.getCurrentSurface();
sLocation.setLocation(i_sx, i_sy);
currentSurface.getWorldLocation(sLocation, rayPoint);
Hit hit = picker.getHit(rayPoint, i_search);
if (hit != null) return hit.getSearchResult();
if (i_search == null || (!i_search.prune(m_host) && i_search.accept(m_host))) return m_host;
return null;
} finally {
Draw3DCache.returnPoint(sLocation);
Draw3DCache.returnVector3f(rayPoint);
}
}
/**
* {@inheritDoc}
*
* @see org.eclipse.draw3d.AbstractSurface#getZAxis(org.eclipse.draw3d.geometry.Vector3f)
*/
@Override
protected Vector3f getZAxis(Vector3f io_result) {
ICamera camera = m_scene.getCamera();
return camera.getViewDirection(io_result);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.draw3d.AbstractSurface#getXAxis(org.eclipse.draw3d.geometry.Vector3f)
*/
@Override
protected Vector3f getXAxis(Vector3f io_result) {
ICamera camera = m_scene.getCamera();
return camera.getRightVector(io_result);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.draw3d.AbstractSurface#getOrigin(org.eclipse.draw3d.geometry.Vector3f)
*/
@Override
protected Vector3f getOrigin(Vector3f io_result) {
ICamera camera = m_scene.getCamera();
return camera.unProject(0, 0, m_depth, null, io_result);
}
