org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/handlers/CameraPositionHandler.java

   1 package org.simantics.g3d.vtk.handlers;\r
   2 \r
   3 import java.util.HashMap;\r
   4 import java.util.Map;\r
   5 \r
   6 import javax.vecmath.Vector3d;\r
   7 \r
   8 import org.eclipse.core.commands.AbstractHandler;\r
   9 import org.eclipse.core.commands.ExecutionEvent;\r
  10 import org.eclipse.core.commands.ExecutionException;\r
  11 import org.eclipse.ui.IWorkbenchPart;\r
  12 import org.eclipse.ui.handlers.HandlerUtil;\r
  13 import org.simantics.g3d.vtk.common.InteractiveVtkPanel;\r
  14 import org.simantics.utils.threads.AWTThread;\r
  15 import org.simantics.utils.threads.ThreadUtils;\r
  16 \r
  17 public class CameraPositionHandler extends AbstractHandler {\r
  18 \r
  19         \r
  20         private Map<InteractiveVtkPanel,Vector3d> cameraPos = new HashMap<InteractiveVtkPanel, Vector3d>();\r
  21         \r
  22         @Override\r
  23         public Object execute(ExecutionEvent event) throws ExecutionException {\r
  24              \r
  25              final IWorkbenchPart ap = HandlerUtil.getActiveEditor(event);\r
  26              final InteractiveVtkPanel panel = (InteractiveVtkPanel)ap.getAdapter(InteractiveVtkPanel.class);\r
  27              \r
  28              String param = event.getParameter("org.simantics.g3d.viewDirection");\r
  29              String vals[] = param.split(",");\r
  30              final Vector3d direction = new Vector3d(Double.parseDouble(vals[0]),Double.parseDouble(vals[1]),Double.parseDouble(vals[2]));\r
  31 \r
  32              \r
  33              ThreadUtils.asyncExec(AWTThread.getThreadAccess(), new Runnable() {\r
  34                         \r
  35                         @Override\r
  36                         public void run() {\r
  37 \r
  38                                 Vector3d focal = new Vector3d(panel.GetRenderer().GetActiveCamera().GetFocalPoint());\r
  39                                 Vector3d pos = new Vector3d(panel.GetRenderer().GetActiveCamera().GetPosition());\r
  40                                 cameraPos.put(panel, pos);\r
  41                                 Vector3d dir = new Vector3d(pos);\r
  42                                 dir.sub(focal);\r
  43                                 double distance = dir.length();\r
  44                                 \r
  45                                 dir.set(direction);\r
  46                                 dir.scale(distance);\r
  47                                 dir.add(focal);\r
  48                                 panel.GetRenderer().GetActiveCamera().SetPosition(dir.x, dir.y, dir.z);\r
  49                                 if (Math.abs(direction.dot(new Vector3d(0,1,0))) < 0.95)\r
  50                                         panel.GetRenderer().GetActiveCamera().SetViewUp(0, 1, 0);\r
  51                                 else\r
  52                                         panel.GetRenderer().GetActiveCamera().SetViewUp(1, 0, 0);\r
  53                                 \r
  54                                 panel.GetRenderer().ResetCameraClippingRange();\r
  55                                 \r
  56                                 panel.UpdateLight();\r
  57                                 panel.repaint();\r
  58                         }\r
  59                  });\r
  60             \r
  61              return null;\r
  62              \r
  63         }\r
  64         \r
  65         \r
  66 }\r