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

   1 /*******************************************************************************
   2  * Copyright (c) 2012, 2013 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.g3d.vtk.handlers;
  13
  14 import java.util.HashMap;
  15 import java.util.Map;
  16
  17 import javax.vecmath.Vector3d;
  18
  19 import org.eclipse.core.commands.AbstractHandler;
  20 import org.eclipse.core.commands.ExecutionEvent;
  21 import org.eclipse.core.commands.ExecutionException;
  22 import org.eclipse.ui.IWorkbenchPart;
  23 import org.eclipse.ui.handlers.HandlerUtil;
  24 import org.simantics.g3d.vtk.action.vtkAction;
  25 import org.simantics.g3d.vtk.common.VtkView;
  26 import org.simantics.g3d.vtk.swt.vtkCameraAndSelectorAction;
  27 import org.simantics.utils.threads.ThreadUtils;
  28
  29 public class CameraPositionHandler extends AbstractHandler {
  30
  31
  32         private Map<VtkView,Vector3d> cameraPos = new HashMap<VtkView, Vector3d>();
  33
  34         @Override
  35         public Object execute(ExecutionEvent event) throws ExecutionException {
  36
  37                 final IWorkbenchPart ap = HandlerUtil.getActiveEditor(event);
  38                 final VtkView panel = (VtkView)ap.getAdapter(VtkView.class);
  39
  40                 String param = event.getParameter("org.simantics.g3d.viewDirection");
  41                 String vals[] = param.split(",");
  42                 final Vector3d direction = new Vector3d(Double.parseDouble(vals[0]),Double.parseDouble(vals[1]),Double.parseDouble(vals[2]));
  43
  44
  45                 ThreadUtils.asyncExec(panel.getThreadQueue(), new Runnable() {
  46
  47                         @Override
  48                         public void run() {
  49
  50                                 Vector3d focal = new Vector3d(panel.getRenderer().GetActiveCamera().GetFocalPoint());
  51                                 Vector3d pos = new Vector3d(panel.getRenderer().GetActiveCamera().GetPosition());
  52                                 cameraPos.put(panel, pos);
  53                                 Vector3d dir = new Vector3d(pos);
  54                                 dir.sub(focal);
  55                                 double distance = dir.length();
  56
  57                                 dir.set(direction);
  58                                 dir.scale(distance);
  59                                 dir.add(focal);
  60
  61                                 panel.getRenderer().GetActiveCamera().SetPosition(dir.x, dir.y, dir.z);
  62
  63                                 vtkAction action = panel.getDefaultAction();
  64                                 if (action instanceof vtkCameraAndSelectorAction)
  65                                         ((vtkCameraAndSelectorAction)action).focus(focal.x, focal.y, focal.z);
  66                                 else {
  67                                         if (Math.abs(direction.dot(new Vector3d(0,1,0))) < 0.95)
  68                                                 panel.getRenderer().GetActiveCamera().SetViewUp(0, 1, 0);
  69                                         else
  70                                                 panel.getRenderer().GetActiveCamera().SetViewUp(1, 0, 0);
  71
  72                                         panel.getRenderer().ResetCameraClippingRange();
  73                                 }
  74
  75                                 //panel.UpdateLight();
  76                                 panel.refresh();
  77                         }
  78                 });
  79
  80                 return null;
  81
  82         }
  83
  84
  85 }