public IcyVtkPanel() {
super();
// picker
// picker = new vtkPropPicker();
// picker.PickFromListOff();
picker = new vtkCellPicker();
picker.PickFromListOff();
// set ambient color to white
lgt.SetAmbientColor(1d, 1d, 1d);
lightFollowCamera = true;
// assign default renderer to layer 0 (should be the case by default)
ren.SetLayer(0);
// initialize axis
axisRenderer = new vtkRenderer();
// BUG: with OpenGL window the global render window viewport is limited to the last layer
// viewport dimension
// axisRenderer.SetViewport(0.0, 0.0, 0.2, 0.2);
axisRenderer.SetLayer(1);
axisRenderer.InteractiveOff();
rw.AddRenderer(axisRenderer);
rw.SetNumberOfLayers(2);
axisCam = axisRenderer.GetActiveCamera();
axis = new vtkAxesActor();
axisRenderer.AddActor(axis);
// default axis offset and scale
axisOffset = new int[] {124, 124};
axisScale = 1;
// reset camera
axisCam.SetViewUp(0, -1, 0);
axisCam.Elevation(210);
axisCam.SetParallelProjection(1);
axisRenderer.ResetCamera();
axisRenderer.ResetCameraClippingRange();
// used for restore quality rendering after a given amount of time
fineRenderingTime = 0;
renderingMonitor = new Thread(this, "VTK panel rendering monitor");
renderingMonitor.start();
addMouseListener(this);
addMouseMotionListener(this);
addMouseWheelListener(this);
addKeyListener(this);
}
/** Rotate specified camera view */
public void rotateView(vtkCamera c, vtkRenderer r, int dx, int dy) {
lock();
try {
// rotation mode
c.Azimuth(dx);
c.Elevation(dy);
c.OrthogonalizeViewUp();
r.ResetCameraClippingRange();
} finally {
unlock();
}
}
/** Zoom current view by specified factor (negative value means unzoom) */
public void zoomView(vtkCamera c, vtkRenderer r, double factor) {
lock();
try {
if (c.GetParallelProjection() == 1) c.SetParallelScale(c.GetParallelScale() / factor);
else {
c.Dolly(factor);
r.ResetCameraClippingRange();
}
} finally {
unlock();
}
}
/** Translate specified camera view */
public void translateView(vtkCamera c, vtkRenderer r, double dx, double dy) {
// translation mode
double FPoint[];
double PPoint[];
double APoint[] = new double[3];
double RPoint[];
double focalDepth;
lock();
try {
// get the current focal point and position
FPoint = c.GetFocalPoint();
PPoint = c.GetPosition();
// calculate the focal depth since we'll be using it a lot
r.SetWorldPoint(FPoint[0], FPoint[1], FPoint[2], 1.0);
r.WorldToDisplay();
focalDepth = r.GetDisplayPoint()[2];
final int[] size = rw.GetSize();
APoint[0] = (size[0] / 2.0) + dx;
APoint[1] = (size[1] / 2.0) + dy;
APoint[2] = focalDepth;
r.SetDisplayPoint(APoint);
r.DisplayToWorld();
RPoint = r.GetWorldPoint();
if (RPoint[3] != 0.0) {
RPoint[0] = RPoint[0] / RPoint[3];
RPoint[1] = RPoint[1] / RPoint[3];
RPoint[2] = RPoint[2] / RPoint[3];
}
/*
* Compute a translation vector, moving everything 1/2 the distance
* to the cursor. (Arbitrary scale factor)
*/
c.SetFocalPoint(
(FPoint[0] - RPoint[0]) / 2.0 + FPoint[0],
(FPoint[1] - RPoint[1]) / 2.0 + FPoint[1],
(FPoint[2] - RPoint[2]) / 2.0 + FPoint[2]);
c.SetPosition(
(FPoint[0] - RPoint[0]) / 2.0 + PPoint[0],
(FPoint[1] - RPoint[1]) / 2.0 + PPoint[1],
(FPoint[2] - RPoint[2]) / 2.0 + PPoint[2]);
r.ResetCameraClippingRange();
} finally {
unlock();
}
}
