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 javax.vecmath.Point2d;
  21 import javax.vecmath.Point2i;
  22 import javax.vecmath.Point3d;
  23
  24 import org.eclipse.jface.viewers.ISelection;
  25 import org.eclipse.jface.viewers.ISelectionChangedListener;
  26 import org.eclipse.jface.viewers.ISelectionProvider;
  27 import org.eclipse.jface.viewers.SelectionChangedEvent;
  28 import org.eclipse.jface.viewers.StructuredSelection;
  29 import org.eclipse.swt.widgets.Display;
  30 import org.simantics.g3d.tools.AdaptationUtils;
  31
  32 import vtk.vtkCamera;
  33 import vtk.vtkProp;
  34 import vtk.vtkRenderWindow;
  35 import vtk.vtkRenderer;
  36
  37 public class vtkCameraAndSelectorAction extends vtkAwtAction implements ISelectionProvider {
  38
  39         protected vtkRenderer ren;
  40         protected int lastX;
  41         protected int lastY;
  42         protected vtkRenderWindow rw;
  43         protected vtkCamera cam;
  44         protected int InteractionMode = 1;
  45
  46         protected double activeRate = 5.0;
  47         protected double passiveRate = 0.01;
  48         protected boolean doNotRotate = true;
  49
  50         public vtkCameraAndSelectorAction(InteractiveVtkPanel panel) {
  51                 super(panel);
  52                 this.ren = panel.GetRenderer();
  53                 this.rw = panel.GetRenderWindow();
  54                 this.cam = ren.GetActiveCamera();
  55         }
  56
  57         public void Lock() {
  58                 panel.lock();
  59         }
  60
  61         public void UnLock() {
  62                 panel.unlock();
  63         }
  64
  65         public void InteractionModeRotate()
  66         {
  67                 this.InteractionMode = 1;
  68         }
  69
  70         public void InteractionModeTranslate()
  71         {
  72                 this.InteractionMode = 2;
  73         }
  74
  75         public void InteractionModeZoom()
  76         {
  77                 this.InteractionMode = 3;
  78         }
  79
  80         public void resetCameraClippingRange() {
  81                 Lock();
  82                 ren.ResetCameraClippingRange();
  83                 UnLock();
  84         }
  85
  86         public void resetCamera() {
  87                 Lock();
  88                 ren.ResetCamera();
  89                 UnLock();
  90         }
  91
  92         public void mousePressed(MouseEvent e)
  93         {
  94
  95                 if (ren.VisibleActorCount() == 0) return;
  96                 rw.SetDesiredUpdateRate(activeRate);
  97                 lastX = e.getX();
  98                 lastY = e.getY();
  99                 if ((e.getModifiers()==InputEvent.BUTTON2_MASK) ||
 100                         (e.getModifiers()==(InputEvent.BUTTON1_MASK | InputEvent.SHIFT_MASK)))
 101                 {
 102                         InteractionModeTranslate();
 103                 }
 104                 else if (e.getModifiers()==InputEvent.BUTTON3_MASK)
 105                 {
 106                         InteractionModeZoom();
 107                 }
 108                 else
 109                 {
 110                         InteractionModeRotate();
 111                 }
 112         }
 113
 114         public void mouseReleased(MouseEvent e)
 115         {
 116                 rw.SetDesiredUpdateRate(passiveRate);
 117         }
 118
 119
 120
 121         public void mouseDragged(MouseEvent e)
 122         {
 123                 if (ren.VisibleActorCount() == 0) return;
 124                 int x = e.getX();
 125                 int y = e.getY();
 126                 // rotate
 127                 if (this.InteractionMode == 1)
 128                 {
 129                         cam.Azimuth(lastX - x);
 130                         cam.Elevation(y - lastY);
 131                         if (doNotRotate)
 132                                 cam.SetRoll(0);
 133                         cam.OrthogonalizeViewUp();
 134                         resetCameraClippingRange();
 135                         panel.UpdateLight();
 136                 }
 137                 // translate
 138                 if (this.InteractionMode == 2)
 139                 {
 140                         double  FPoint[];
 141                         double  PPoint[];
 142                         double  APoint[] = new double[3];
 143                         double  RPoint[];
 144                         double focalDepth;
 145
 146                         // get the current focal point and position
 147                         FPoint = cam.GetFocalPoint();
 148                         PPoint = cam.GetPosition();
 149
 150                         // calculate the focal depth since we'll be using it a lot
 151                         ren.SetWorldPoint(FPoint[0],FPoint[1],FPoint[2],1.0);
 152                         ren.WorldToDisplay();
 153                         focalDepth = ren.GetDisplayPoint()[2];
 154
 155                         APoint[0] = rw.GetSize()[0]/2.0 + (x - lastX);
 156                         APoint[1] = rw.GetSize()[1]/2.0 - (y - lastY);
 157                         APoint[2] = focalDepth;
 158                         ren.SetDisplayPoint(APoint);
 159                         ren.DisplayToWorld();
 160                         RPoint = ren.GetWorldPoint();
 161                         if (RPoint[3] != 0.0)
 162                         {
 163                                 RPoint[0] = RPoint[0]/RPoint[3];
 164                                 RPoint[1] = RPoint[1]/RPoint[3];
 165                                 RPoint[2] = RPoint[2]/RPoint[3];
 166                         }
 167
 168                         /*
 169                         * Compute a translation vector, moving everything 1/2
 170                         * the distance to the cursor. (Arbitrary scale factor)
 171                         */
 172                         cam.SetFocalPoint(
 173                                                         (FPoint[0]-RPoint[0])/2.0 + FPoint[0],
 174                                                         (FPoint[1]-RPoint[1])/2.0 + FPoint[1],
 175                                                         (FPoint[2]-RPoint[2])/2.0 + FPoint[2]);
 176                         cam.SetPosition(
 177                                                         (FPoint[0]-RPoint[0])/2.0 + PPoint[0],
 178                                                         (FPoint[1]-RPoint[1])/2.0 + PPoint[1],
 179                                                         (FPoint[2]-RPoint[2])/2.0 + PPoint[2]);
 180                         resetCameraClippingRange();
 181                 }
 182                 // zoom
 183                 if (this.InteractionMode == 3)
 184                 {
 185                         double zoomFactor;
 186                         //double clippingRange[];
 187
 188                         zoomFactor = Math.pow(1.02,(y - lastY));
 189                         if (cam.GetParallelProjection() == 1)
 190                         {
 191                                 cam.SetParallelScale(cam.GetParallelScale()/zoomFactor);
 192                         }
 193                         else
 194                         {
 195                                 cam.Dolly(zoomFactor);
 196                                 resetCameraClippingRange();
 197                         }
 198                 }
 199                 lastX = x;
 200                 lastY = y;
 201                 panel.Render();
 202         }
 203
 204
 205                 private List<vtkProp> selectActors = new ArrayList<vtkProp>();
 206                 private List<vtkProp> hoverActor = new ArrayList<vtkProp>();
 207
 208                 @Override
 209                 public void mouseClicked(MouseEvent e) {
 210                         if (!panel.isFocusOwner())
 211                                 return;
 212                         if (e.getButton() != MouseEvent.BUTTON1)
 213                                 return;
 214                         lastX = e.getX();
 215                         lastY = e.getY();
 216                         vtkProp spick[] = panel.pick(e.getX(), e.getY());
 217                         if (spick != null && spick.length > 0) {
 218                                 for (vtkProp selectActor : spick) {
 219                                         if (!e.isControlDown()) {
 220                                                 selectActors.clear();
 221                                                 selectActors.add(selectActor);
 222                                         } else {
 223                                                 if (selectActors.contains(selectActor))
 224                                                         selectActors.remove(selectActor);
 225                                                 else
 226                                                         selectActors.add(selectActor);
 227                                         }
 228                                 }
 229                                 fireSelectionChanged();
 230                         } else if (!e.isControlDown()) {
 231                                 selectActors.clear();
 232                                 fireSelectionChanged();
 233                         }
 234
 235 //                      if (e.getClickCount() > 1)
 236 //                              updatePickRay(e.getX(), e.getY());
 237
 238                 }
 239
 240 //              private void updatePickRay(double x , double y) {
 241 //                      Ray ray = vtkUtil.createMouseRay(panel.GetRenderer(), x, y);
 242 //
 243 //
 244 //                      System.out.println(ray.pos + " " + ray.dir);
 245 //                      vtkPoints linePoints = new vtkPoints();
 246 //                      linePoints.InsertPoint(0,ray.pos.x, ray.pos.y, ray.pos.z);
 247 //                      linePoints.InsertPoint(1, ray.pos.x + ray.dir.x, ray.pos.y + ray.dir.y, ray.pos.z + ray.dir.z);
 248 //                      vtkLine aLine = new vtkLine();
 249 //                      aLine.GetPointIds().SetId(0, 0);
 250 //                      aLine.GetPointIds().SetId(1, 1);
 251 //                      vtkUnstructuredGrid aLineGrid = new vtkUnstructuredGrid();
 252 //                      aLineGrid.Allocate(1, 1);
 253 //                      aLineGrid.InsertNextCell(aLine.GetCellType(), aLine.GetPointIds());
 254 //                      aLineGrid.SetPoints(linePoints);
 255 //                      vtkDataSetMapper aLineMapper = new vtkDataSetMapper();
 256 //                      aLineMapper.SetInput(aLineGrid);
 257 //                      vtkActor aLineActor = new vtkActor();
 258 //                      aLineActor.SetMapper(aLineMapper);
 259 //                      aLineActor.GetProperty().SetDiffuseColor(.2, 1, 1);
 260 //
 261 //                  if (rayActor != null) {
 262 //                      panel.GetRenderer().RemoveActor(rayActor);
 263 //                      rayActor.Delete();
 264 //                  }
 265 //                  rayActor = aLineActor;
 266 //                  panel.GetRenderer().AddActor(rayActor);
 267 //
 268 //                  linePoints.Delete();
 269 //                  aLine.Delete();
 270 //                  aLineGrid.Delete();
 271 //                  aLineMapper.Delete();
 272 //                  panel.repaint();
 273 //              }
 274 //
 275 //              private vtkActor rayActor;
 276
 277                 @Override
 278                 public void mouseMoved(MouseEvent e) {
 279                         lastX = e.getX();
 280                         lastY = e.getY();
 281
 282                         if (!panel.isFocusOwner())
 283                                 return;
 284                         List<vtkProp> prevHover = new ArrayList<vtkProp>();
 285                         prevHover.addAll(hoverActor);
 286                         hoverActor.clear();
 287                         vtkProp pick[] =  panel.pick(e.getX(),e.getY());
 288                         if (pick != null) {
 289                                 for (vtkProp p : pick)
 290                                         hoverActor.add(p);
 291                         }
 292
 293                         if (!prevHover.containsAll(hoverActor) || !hoverActor.containsAll(prevHover)) {
 294                                 fireHoverChanged();
 295                         }
 296                 }
 297
 298                 /**
 299                  * Returns mouse position in AWT screen coordinates.
 300                  * @return
 301                  */
 302                 public Point2i getMousePositionAWT() {
 303                         return new Point2i(lastX, lastY);
 304                 }
 305
 306                 /**
 307                  * Returns mouse position in VTK screen coordinates.
 308                  * @return
 309                  */
 310                 public Point2d getMousePosition() {
 311                         return new Point2d(lastX, rw.GetSize()[1]-lastY);
 312                 }
 313
 314                 public List<vtkProp> getSelectActor() {
 315                         return selectActors;
 316                 }
 317
 318                 public List<vtkProp> getHoverActor() {
 319                         return hoverActor;
 320                 }
 321
 322                 private List<ISelectionChangedListener> selectionListeners = new ArrayList<ISelectionChangedListener>();
 323
 324                 @Override
 325                 public void addSelectionChangedListener(ISelectionChangedListener listener) {
 326                         selectionListeners.add(listener);
 327                 }
 328
 329                 @Override
 330                 public ISelection getSelection() {
 331                         return new StructuredSelection(selectActors);
 332                 }
 333
 334                 @Override
 335                 public void removeSelectionChangedListener(
 336                                 ISelectionChangedListener listener) {
 337                         selectionListeners.remove(listener);
 338                 }
 339
 340                 @Override
 341                 public void setSelection(ISelection selection) {
 342                         setSelection(selection, false);
 343
 344                 }
 345
 346                 public void setSelection(ISelection selection, boolean fire) {
 347                         Collection<vtkProp> selectedProps = AdaptationUtils.adaptToCollection(selection, vtkProp.class);
 348
 349                         selectActors.clear();
 350                         selectActors.addAll(selectedProps);
 351                         if (fire)
 352                                 fireSelectionChanged();
 353                 }
 354
 355                 private void fireSelectionChanged() {
 356                         Display.getDefault().asyncExec(new Runnable() {
 357                                 @Override
 358                                 public void run() {
 359
 360                                         SelectionChangedEvent evt = new SelectionChangedEvent(vtkCameraAndSelectorAction.this, new StructuredSelection(selectActors));
 361                                         for (ISelectionChangedListener l :selectionListeners) {
 362                                                 l.selectionChanged(evt);
 363                                         }
 364
 365                                 }
 366                         });
 367                 }
 368
 369
 370                 private List<ISelectionChangedListener> hoverListeners = new ArrayList<ISelectionChangedListener>();
 371
 372
 373                 public void addHoverChangedListener(ISelectionChangedListener listener) {
 374                         hoverListeners.add(listener);
 375                 }
 376
 377
 378                 public ISelection getHoverSelection() {
 379                         return new StructuredSelection(hoverActor);
 380                 }
 381
 382                 public void removeHoverChangedListener(
 383                                 ISelectionChangedListener listener) {
 384                         hoverListeners.remove(listener);
 385                 }
 386
 387                 private void fireHoverChanged() {
 388                         Display.getDefault().asyncExec(new Runnable() {
 389                                 @Override
 390                                 public void run() {
 391                                         StructuredSelection sel = null;
 392                                         if (hoverActor == null)
 393                                                 sel = new StructuredSelection();
 394                                         else
 395                                                 sel = new StructuredSelection(hoverActor);
 396                                         SelectionChangedEvent evt = new SelectionChangedEvent(vtkCameraAndSelectorAction.this, sel);
 397                                         for (ISelectionChangedListener l :hoverListeners) {
 398                                                 l.selectionChanged(evt);
 399                                         }
 400
 401                                 }
 402                         });
 403                 }
 404
 405                 public vtkCamera getCamera() {
 406                         return cam;
 407                 }
 408
 409                 public Point3d getPosition() {
 410                         double pos[] = cam.GetPosition();
 411                         return new Point3d(pos);
 412                 }
 413
 414                 public Point3d getFocus() {
 415                         double pos[] = cam.GetFocalPoint();
 416                         return new Point3d(pos);
 417                 }
 418
 419                 public void setFocus(Point3d focus) {
 420                         setFocus(focus.x,focus.y,focus.z);
 421                 }
 422
 423                 public void setFocus(double x, double y, double z) {
 424                         Lock();
 425                         cam.SetFocalPoint(x, y, z);
 426                         if (doNotRotate)
 427                                 cam.SetRoll(0);
 428                         cam.OrthogonalizeViewUp();
 429                         ren.ResetCameraClippingRange();
 430                         panel.UpdateLight();
 431                         UnLock();
 432                 }
 433
 434                 public void setPosition(Point3d position) {
 435                         setPosition(position.x,position.y,position.z);
 436                 }
 437
 438                 public void setPosition(double x, double y, double z) {
 439                         Lock();
 440                         cam.SetPosition(x, y, z);
 441                         if (doNotRotate)
 442                                 cam.SetRoll(0);
 443                         cam.OrthogonalizeViewUp();
 444                         ren.ResetCameraClippingRange();
 445                         panel.UpdateLight();
 446                         UnLock();
 447                 }
 448
 449
 450
 451
 452 }