org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/handlers/ParallelPerspectiveHandler.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.Command;\r
  21 import org.eclipse.core.commands.ExecutionEvent;\r
  22 import org.eclipse.core.commands.ExecutionException;\r
  23 import org.eclipse.ui.IWorkbenchPart;\r
  24 import org.eclipse.ui.handlers.HandlerUtil;\r
  25 import org.simantics.g3d.vtk.common.InteractiveVtkPanel;\r
  26 import org.simantics.utils.threads.AWTThread;\r
  27 import org.simantics.utils.threads.ThreadUtils;\r
  28 \r
  29 public class ParallelPerspectiveHandler extends AbstractHandler {\r
  30 \r
  31         \r
  32         private Map<InteractiveVtkPanel,Vector3d> cameraPos = new HashMap<InteractiveVtkPanel, Vector3d>();\r
  33         \r
  34         @Override\r
  35         public Object execute(ExecutionEvent event) throws ExecutionException {\r
  36                  Command command = event.getCommand();\r
  37              boolean oldValue = HandlerUtil.toggleCommandState(command);\r
  38              final boolean activate = !oldValue;\r
  39              \r
  40              final IWorkbenchPart ap = HandlerUtil.getActiveEditor(event);\r
  41              final InteractiveVtkPanel panel = (InteractiveVtkPanel)ap.getAdapter(InteractiveVtkPanel.class);\r
  42              \r
  43              ThreadUtils.asyncExec(AWTThread.getThreadAccess(), new Runnable() {\r
  44                         \r
  45                         @Override\r
  46                         public void run() {\r
  47                                 if (activate){\r
  48                                         Vector3d focal = new Vector3d(panel.GetRenderer().GetActiveCamera().GetFocalPoint());\r
  49                                         Vector3d pos = new Vector3d(panel.GetRenderer().GetActiveCamera().GetPosition());\r
  50                                         cameraPos.put(panel, pos);\r
  51                                         Vector3d dir = new Vector3d(pos);\r
  52                                         dir.sub(focal);\r
  53                                         dir.normalize();\r
  54                                         dir.scale(100);\r
  55                                         dir.add(focal);\r
  56                                         panel.GetRenderer().GetActiveCamera().SetPosition(dir.x, dir.y, dir.z);\r
  57                                         \r
  58                                         \r
  59                                         panel.GetRenderer().GetActiveCamera().SetParallelProjection(1);\r
  60                                         panel.GetRenderer().ResetCameraClippingRange();\r
  61                                 } else {\r
  62                                         panel.GetRenderer().GetActiveCamera().SetParallelProjection(0);\r
  63                                         Vector3d pos = cameraPos.get(panel);\r
  64                                         if (pos != null) {\r
  65                                                 panel.GetRenderer().GetActiveCamera().SetPosition(pos.x, pos.y, pos.z);\r
  66                                         }\r
  67                                         panel.GetRenderer().ResetCameraClippingRange();\r
  68                                         \r
  69                                 }\r
  70                                 panel.UpdateLight();\r
  71                                 panel.repaint();\r
  72 \r
  73                         }\r
  74                  });\r
  75             \r
  76              return null;\r
  77              \r
  78         }\r
  79         \r
  80         \r
  81         \r
  82 }\r