org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/awt/vtkCameraAndSelectorAction.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.awt;
  13
  14 import java.awt.event.InputEvent;
  15 import java.awt.event.MouseEvent;
  16 import java.util.ArrayList;
  17 import java.util.Collection;
  18 import java.util.List;
  19
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.ISelectionChangedListener;
  22 import org.eclipse.jface.viewers.ISelectionProvider;
  23 import org.eclipse.jface.viewers.SelectionChangedEvent;
  24 import org.eclipse.jface.viewers.StructuredSelection;
  25 import org.eclipse.swt.widgets.Display;
  26 import org.simantics.g3d.tools.AdaptationUtils;
  27
  28 import vtk.vtkCamera;
  29 import vtk.vtkProp;
  30 import vtk.vtkRenderWindow;
  31 import vtk.vtkRenderer;
  32
  33 public class vtkCameraAndSelectorAction extends vtkAwtAction implements ISelectionProvider {
  34
  35         protected vtkRenderer ren;
  36         protected int lastX;
  37         protected int lastY;
  38         protected vtkRenderWindow rw;
  39         protected vtkCamera cam;
  40         protected int InteractionMode = 1;
  41
  42         protected double activeRate = 5.0;
  43         protected double passiveRate = 0.01;
  44         protected boolean doNotRotate = true;
  45
  46         public vtkCameraAndSelectorAction(InteractiveVtkPanel panel) {
  47                 super(panel);
  48                 this.ren = panel.GetRenderer();
  49                 this.rw = panel.GetRenderWindow();
  50                 this.cam = ren.GetActiveCamera();
  51         }
  52
  53         public void Lock() {
  54                 panel.lock();
  55         }
  56
  57         public void UnLock() {
  58                 panel.unlock();
  59         }
  60
  61         public void InteractionModeRotate()
  62           {
  63             this.InteractionMode = 1;
  64           }
  65
  66           public void InteractionModeTranslate()
  67           {
  68             this.InteractionMode = 2;
  69           }
  70
  71           public void InteractionModeZoom()
  72           {
  73             this.InteractionMode = 3;
  74           }
  75
  76         public void resetCameraClippingRange() {
  77             Lock();
  78             ren.ResetCameraClippingRange();
  79             UnLock();
  80           }
  81
  82           public void resetCamera() {
  83             Lock();
  84             ren.ResetCamera();
  85             UnLock();
  86           }
  87
  88          public void mousePressed(MouseEvent e)
  89           {
  90
  91             if (ren.VisibleActorCount() == 0) return;
  92             rw.SetDesiredUpdateRate(activeRate);
  93             lastX = e.getX();
  94             lastY = e.getY();
  95             if ((e.getModifiers()==InputEvent.BUTTON2_MASK) ||
  96                 (e.getModifiers()==(InputEvent.BUTTON1_MASK | InputEvent.SHIFT_MASK)))
  97               {
  98                 InteractionModeTranslate();
  99               }
 100             else if (e.getModifiers()==InputEvent.BUTTON3_MASK)
 101               {
 102                 InteractionModeZoom();
 103               }
 104             else
 105               {
 106                 InteractionModeRotate();
 107               }
 108           }
 109
 110          public void mouseReleased(MouseEvent e)
 111           {
 112             rw.SetDesiredUpdateRate(passiveRate);
 113           }
 114
 115
 116
 117          public void mouseDragged(MouseEvent e)
 118           {
 119             if (ren.VisibleActorCount() == 0) return;
 120             int x = e.getX();
 121             int y = e.getY();
 122             // rotate
 123             if (this.InteractionMode == 1)
 124               {
 125                 cam.Azimuth(lastX - x);
 126                 cam.Elevation(y - lastY);
 127                 if (doNotRotate)
 128                         cam.SetRoll(0);
 129                 cam.OrthogonalizeViewUp();
 130                 resetCameraClippingRange();
 131                 panel.UpdateLight();
 132               }
 133             // translate
 134             if (this.InteractionMode == 2)
 135               {
 136                 double  FPoint[];
 137                 double  PPoint[];
 138                 double  APoint[] = new double[3];
 139                 double  RPoint[];
 140                 double focalDepth;
 141
 142                 // get the current focal point and position
 143                 FPoint = cam.GetFocalPoint();
 144                 PPoint = cam.GetPosition();
 145
 146                 // calculate the focal depth since we'll be using it a lot
 147                 ren.SetWorldPoint(FPoint[0],FPoint[1],FPoint[2],1.0);
 148                 ren.WorldToDisplay();
 149                 focalDepth = ren.GetDisplayPoint()[2];
 150
 151                 APoint[0] = rw.GetSize()[0]/2.0 + (x - lastX);
 152                 APoint[1] = rw.GetSize()[1]/2.0 - (y - lastY);
 153                 APoint[2] = focalDepth;
 154                 ren.SetDisplayPoint(APoint);
 155                 ren.DisplayToWorld();
 156                 RPoint = ren.GetWorldPoint();
 157                 if (RPoint[3] != 0.0)
 158                   {
 159                     RPoint[0] = RPoint[0]/RPoint[3];
 160                     RPoint[1] = RPoint[1]/RPoint[3];
 161                     RPoint[2] = RPoint[2]/RPoint[3];
 162                   }
 163
 164                 /*
 165                  * Compute a translation vector, moving everything 1/2
 166                  * the distance to the cursor. (Arbitrary scale factor)
 167                  */
 168                 cam.SetFocalPoint(
 169                                   (FPoint[0]-RPoint[0])/2.0 + FPoint[0],
 170                                   (FPoint[1]-RPoint[1])/2.0 + FPoint[1],
 171                                   (FPoint[2]-RPoint[2])/2.0 + FPoint[2]);
 172                 cam.SetPosition(
 173                                 (FPoint[0]-RPoint[0])/2.0 + PPoint[0],
 174                                 (FPoint[1]-RPoint[1])/2.0 + PPoint[1],
 175                                 (FPoint[2]-RPoint[2])/2.0 + PPoint[2]);
 176                 resetCameraClippingRange();
 177               }
 178             // zoom
 179             if (this.InteractionMode == 3)
 180               {
 181                 double zoomFactor;
 182                 //double clippingRange[];
 183
 184                 zoomFactor = Math.pow(1.02,(y - lastY));
 185                 if (cam.GetParallelProjection() == 1)
 186                   {
 187                     cam.SetParallelScale(cam.GetParallelScale()/zoomFactor);
 188                   }
 189                 else
 190                   {
 191                     cam.Dolly(zoomFactor);
 192                     resetCameraClippingRange();
 193                   }
 194               }
 195             lastX = x;
 196             lastY = y;
 197             panel.Render();
 198           }
 199
 200
 201                 private List<vtkProp> selectActors = new ArrayList<vtkProp>();
 202                 private List<vtkProp> hoverActor = new ArrayList<vtkProp>();
 203
 204                 @Override
 205                 public void mouseClicked(MouseEvent e) {
 206                         if (!panel.isFocusOwner())
 207                                 return;
 208                         if (e.getButton() != MouseEvent.BUTTON1)
 209                                 return;
 210                         vtkProp spick[] = panel.pick(e.getX(), e.getY());
 211                         if (spick != null && spick.length > 0) {
 212                                 for (vtkProp selectActor : spick) {
 213                                         if (!e.isControlDown()) {
 214                                                 selectActors.clear();
 215                                                 selectActors.add(selectActor);
 216                                         } else {
 217                                                 if (selectActors.contains(selectActor))
 218                                                         selectActors.remove(selectActor);
 219                                                 else
 220                                                         selectActors.add(selectActor);
 221                                         }
 222                                 }
 223                                 fireSelectionChanged();
 224                         } else if (!e.isControlDown()) {
 225                                 selectActors.clear();
 226                                 fireSelectionChanged();
 227                         }
 228
 229 //                      if (e.getClickCount() > 1)
 230 //                              updatePickRay(e.getX(), e.getY());
 231
 232                 }
 233
 234 //              private void updatePickRay(double x , double y) {
 235 //                      Ray ray = vtkUtil.createMouseRay(panel.GetRenderer(), x, y);
 236 //
 237 //
 238 //                      System.out.println(ray.pos + " " + ray.dir);
 239 //                      vtkPoints linePoints = new vtkPoints();
 240 //                      linePoints.InsertPoint(0,ray.pos.x, ray.pos.y, ray.pos.z);
 241 //                      linePoints.InsertPoint(1, ray.pos.x + ray.dir.x, ray.pos.y + ray.dir.y, ray.pos.z + ray.dir.z);
 242 //                      vtkLine aLine = new vtkLine();
 243 //                      aLine.GetPointIds().SetId(0, 0);
 244 //                      aLine.GetPointIds().SetId(1, 1);
 245 //                      vtkUnstructuredGrid aLineGrid = new vtkUnstructuredGrid();
 246 //                      aLineGrid.Allocate(1, 1);
 247 //                      aLineGrid.InsertNextCell(aLine.GetCellType(), aLine.GetPointIds());
 248 //                      aLineGrid.SetPoints(linePoints);
 249 //                      vtkDataSetMapper aLineMapper = new vtkDataSetMapper();
 250 //                      aLineMapper.SetInput(aLineGrid);
 251 //                      vtkActor aLineActor = new vtkActor();
 252 //                      aLineActor.SetMapper(aLineMapper);
 253 //                      aLineActor.GetProperty().SetDiffuseColor(.2, 1, 1);
 254 //
 255 //                  if (rayActor != null) {
 256 //                      panel.GetRenderer().RemoveActor(rayActor);
 257 //                      rayActor.Delete();
 258 //                  }
 259 //                  rayActor = aLineActor;
 260 //                  panel.GetRenderer().AddActor(rayActor);
 261 //
 262 //                  linePoints.Delete();
 263 //                  aLine.Delete();
 264 //                  aLineGrid.Delete();
 265 //                  aLineMapper.Delete();
 266 //                  panel.repaint();
 267 //              }
 268 //
 269 //              private vtkActor rayActor;
 270
 271                 @Override
 272                 public void mouseMoved(MouseEvent e) {
 273                         lastX = e.getX();
 274                     lastY = e.getY();
 275
 276                         if (!panel.isFocusOwner())
 277                                 return;
 278                         List<vtkProp> prevHover = new ArrayList<vtkProp>();
 279                         prevHover.addAll(hoverActor);
 280                         hoverActor.clear();
 281                         vtkProp pick[] =  panel.pick(e.getX(),e.getY());
 282                         if (pick != null) {
 283                                 for (vtkProp p : pick)
 284                                         hoverActor.add(p);
 285                         }
 286
 287                         if (!prevHover.containsAll(hoverActor) || !hoverActor.containsAll(prevHover)) {
 288                                 fireHoverChanged();
 289                         }
 290                 }
 291
 292                 public List<vtkProp> getSelectActor() {
 293                         return selectActors;
 294                 }
 295
 296                 public List<vtkProp> getHoverActor() {
 297                         return hoverActor;
 298                 }
 299
 300                 private List<ISelectionChangedListener> selectionListeners = new ArrayList<ISelectionChangedListener>();
 301
 302                 @Override
 303                 public void addSelectionChangedListener(ISelectionChangedListener listener) {
 304                         selectionListeners.add(listener);
 305                 }
 306
 307                 @Override
 308                 public ISelection getSelection() {
 309                         return new StructuredSelection(selectActors);
 310                 }
 311
 312                 @Override
 313                 public void removeSelectionChangedListener(
 314                                 ISelectionChangedListener listener) {
 315                         selectionListeners.remove(listener);
 316                 }
 317
 318                 @Override
 319                 public void setSelection(ISelection selection) {
 320                         setSelection(selection, false);
 321
 322                 }
 323
 324                 public void setSelection(ISelection selection, boolean fire) {
 325                         Collection<vtkProp> selectedProps = AdaptationUtils.adaptToCollection(selection, vtkProp.class);
 326
 327                         selectActors.clear();
 328                         selectActors.addAll(selectedProps);
 329                         if (fire)
 330                                 fireSelectionChanged();
 331                 }
 332
 333                 private void fireSelectionChanged() {
 334                         Display.getDefault().asyncExec(new Runnable() {
 335                                 @Override
 336                                 public void run() {
 337
 338                                         SelectionChangedEvent evt = new SelectionChangedEvent(vtkCameraAndSelectorAction.this, new StructuredSelection(selectActors));
 339                                         for (ISelectionChangedListener l :selectionListeners) {
 340                                                 l.selectionChanged(evt);
 341                                         }
 342
 343                                 }
 344                         });
 345                 }
 346
 347
 348                 private List<ISelectionChangedListener> hoverListeners = new ArrayList<ISelectionChangedListener>();
 349
 350
 351                 public void addHoverChangedListener(ISelectionChangedListener listener) {
 352                         hoverListeners.add(listener);
 353                 }
 354
 355
 356                 public ISelection getHoverSelection() {
 357                         return new StructuredSelection(hoverActor);
 358                 }
 359
 360                 public void removeHoverChangedListener(
 361                                 ISelectionChangedListener listener) {
 362                         hoverListeners.remove(listener);
 363                 }
 364
 365                 private void fireHoverChanged() {
 366                         Display.getDefault().asyncExec(new Runnable() {
 367                                 @Override
 368                                 public void run() {
 369                                         StructuredSelection sel = null;
 370                                         if (hoverActor == null)
 371                                                 sel = new StructuredSelection();
 372                                         else
 373                                                 sel = new StructuredSelection(hoverActor);
 374                                         SelectionChangedEvent evt = new SelectionChangedEvent(vtkCameraAndSelectorAction.this, sel);
 375                                         for (ISelectionChangedListener l :hoverListeners) {
 376                                                 l.selectionChanged(evt);
 377                                         }
 378
 379                                 }
 380                         });
 381                 }
 382
 383                 public void focus(double x, double y, double z) {
 384                         Lock();
 385                         cam.SetFocalPoint(x, y, z);
 386                         if (doNotRotate)
 387                         cam.SetRoll(0);
 388                 cam.OrthogonalizeViewUp();
 389                 resetCameraClippingRange();
 390                 panel.UpdateLight();
 391                         UnLock();
 392                 }
 393
 394
 395 }