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

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