org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/swt/InteractiveVtkComposite.java

   1 package org.simantics.g3d.vtk.swt;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5
   6 import org.eclipse.core.runtime.Platform;
   7 import org.eclipse.swt.widgets.Composite;
   8 import org.simantics.g3d.scenegraph.RenderListener;
   9 import org.simantics.g3d.vtk.action.vtkAction;
  10 import org.simantics.g3d.vtk.common.VtkView;
  11 import org.simantics.utils.threads.IThreadWorkQueue;
  12 import org.simantics.utils.threads.SWTThread;
  13 import org.simantics.utils.threads.ThreadUtils;
  14
  15 import vtk.vtkAbstractPicker;
  16 import vtk.vtkActor2D;
  17 import vtk.vtkActor2DCollection;
  18 import vtk.vtkAreaPicker;
  19 import vtk.vtkAssemblyNode;
  20 import vtk.vtkAssemblyPath;
  21 import vtk.vtkCellPicker;
  22 import vtk.vtkObject;
  23 import vtk.vtkObjectBase;
  24 import vtk.vtkPointPicker;
  25 import vtk.vtkProp;
  26 import vtk.vtkProp3DCollection;
  27 import vtk.vtkPropCollection;
  28 import vtk.vtkPropPicker;
  29 import vtk.vtkRenderWindow;
  30 import vtk.vtkRenderer;
  31 import vtk.vtkScenePicker;
  32 import vtk.rendering.swt.vtkSwtComponent;
  33
  34 public class InteractiveVtkComposite extends vtkSwtComponent implements VtkView{
  35
  36         Composite parentComposite;
  37         public InteractiveVtkComposite(Composite parentComposite) {
  38                 super(parentComposite);
  39                 this.parentComposite = parentComposite;
  40
  41                 if (!Platform.inDevelopmentMode()) {
  42                         // This is actually a static method in C++
  43                         new vtkObject().GlobalWarningDisplayOff();
  44                 }
  45         }
  46
  47         private boolean updating = false;
  48         private Object mutex = new Object();
  49
  50         @Override
  51         public void refresh() {
  52 //              if (Thread.currentThread() == getThreadQueue().getThread())
  53 //                      update();
  54 //              else {
  55                         synchronized (mutex) {
  56                                 if (!updating) {
  57                                         updating = true;
  58                                         ThreadUtils.asyncExec(getThreadQueue(), new Runnable() {
  59
  60                                                 @Override
  61                                                 public void run() {
  62                                                         if (parentComposite.isDisposed())
  63                                                                 return;
  64                                                         synchronized (mutex) {
  65                                                                 updating = false;
  66                                                         }
  67                                                         update();
  68                                                 }
  69                                         });
  70
  71                                 }
  72                         }
  73 //              }
  74         }
  75
  76         boolean update = false;
  77         @Override
  78         public void update() {
  79                 if (update)
  80                         return;
  81                 update = true;
  82                 super.update();
  83                 update = false;
  84         }
  85
  86         @Override
  87         public IThreadWorkQueue getThreadQueue() {
  88                 return SWTThread.getThreadAccess();
  89         }
  90
  91
  92         boolean render = false;
  93         @Override
  94         public void Render() {
  95                 if (render)
  96                         return;
  97 //              System.out.println(getClass().getSimpleName() +" render");
  98                 render = true;
  99                 firePreRender();
 100                 super.Render();
 101                 firePostRender();
 102                 render = false;
 103         }
 104
 105         public void addListener(RenderListener l) {
 106                 listeners.add(l);
 107         }
 108
 109         public void removeListener(RenderListener l) {
 110                 listeners.remove(l);
 111         }
 112
 113         private List<RenderListener> listeners = new ArrayList<RenderListener>();
 114
 115         List<RenderListener> list = new ArrayList<RenderListener>();
 116
 117         private void firePreRender() {
 118                 if (listeners.size() > 0) {
 119                         list.addAll(listeners);
 120                         for (RenderListener l : list)
 121                                 l.preRender();
 122                         list.clear();
 123                 }
 124         }
 125
 126         private void firePostRender() {
 127                 if (listeners.size() > 0) {
 128                         list.addAll(listeners);
 129                         for (RenderListener l : list)
 130                                 l.postRender();
 131                         list.clear();
 132                 }
 133         }
 134
 135
 136         private List<vtkObjectBase> deletable = new ArrayList<vtkObjectBase>();
 137
 138         public void addDeletable(vtkObjectBase o) {
 139                 deletable.add(o);
 140         }
 141
 142         public void removeDeletable (vtkObjectBase o) {
 143                 deletable.remove(o);
 144         }
 145
 146         @Override
 147         public void Delete() {
 148                 for (vtkObjectBase o : deletable) {
 149                         if (o.GetVTKId() != 0) {
 150                                 o.Delete();
 151                         }
 152                 }
 153                 deletable.clear();
 154
 155                 super.Delete();
 156         }
 157
 158         private vtkSwtAction defaultAction;
 159         private vtkSwtAction currentAction;
 160
 161         public void setActiveAction(vtkAction action) {
 162                 if (action.equals(currentAction))
 163                         return;
 164                 if (currentAction != null)
 165                         currentAction.deattach();
 166                 currentAction = (vtkSwtAction)action;
 167                 if (action != null)
 168                         action.attach();
 169         }
 170
 171         public void setDefaultAction(vtkAction defaultAction) {
 172                 this.defaultAction = (vtkSwtAction)defaultAction;
 173         }
 174
 175         public void useDefaultAction() {
 176                 setActiveAction(defaultAction);
 177         }
 178
 179         public vtkAction getDefaultAction() {
 180                 return defaultAction;
 181         }
 182
 183         public void lock() {
 184                 getVTKLock().lock();
 185         }
 186
 187         public void unlock() {
 188                 getVTKLock().unlock();
 189         }
 190
 191         private vtkScenePicker scenePicker;
 192
 193         int pickType = 4;
 194
 195         public int getPickType() {
 196                 return pickType;
 197         }
 198
 199         public void setPickType(int pickType) {
 200                 this.pickType = pickType;
 201         }
 202
 203         public vtkProp[] pick(int x, int y) {
 204
 205
 206                 vtkRenderWindow rw = getRenderWindow();
 207                 vtkRenderer ren = getRenderer();
 208
 209                 int ax = x;
 210                 int ay = rw.GetSize()[1] - y;
 211
 212                 if (pickType == 0) {
 213                         throw new IllegalStateException("SWT Binding does not work with hw picking");
 214 //                      lock();
 215 //                      ren.BreakOnError();
 216 //                      ren.DrawOff();
 217 //                      vtkPropPicker picker = new vtkPropPicker();
 218 //                      picker.DebugOn();
 219 //                      //picker.PickProp(x, rw.GetSize()[1] - y, ren);
 220 //                      picker.Pick(x, rw.GetSize()[1] - y,0, ren);
 221 //                      ren.DrawOn();
 222 //                      unlock();
 223 //
 224 //                      vtkAssemblyPath apath = picker.GetPath();
 225 //                      return processPick(picker, apath);
 226 //
 227                 } else if (pickType == 1) {
 228                         throw new IllegalStateException("SWT Binding does not work with hw picking");
 229 //                      if (scenePicker == null) {
 230 //                              scenePicker = new vtkScenePicker();
 231 //                              scenePicker.SetRenderer(ren);
 232 //                              scenePicker.EnableVertexPickingOn();
 233 //
 234 //                      }
 235 //                      lock();
 236 //
 237 //                      vtkAssemblyPath apath = ren.PickProp(ax, ay);
 238 //
 239 //                      unlock();
 240 //
 241 //                      if (apath != null) {
 242 //                              apath.InitTraversal();
 243 //                              vtkAssemblyNode node = apath.GetLastNode();
 244 //                              vtkProp test = (vtkProp) node.GetViewProp();
 245 //                              apath.Delete();
 246 //                              node.Delete();
 247 //                              return new vtkProp[]{test};
 248 //
 249 //                      }
 250
 251                 } else if (pickType == 2) {
 252                         vtkPointPicker picker = new vtkPointPicker();
 253                         //picker.SetTolerance(2.0/(double)rw.GetSize()[0]);
 254                         picker.SetTolerance(0.00001);
 255                         lock();
 256                         picker.Pick(new double[]{ax, ay,0}, ren);
 257                         unlock();
 258
 259                         vtkAssemblyPath apath = picker.GetPath();
 260                         return processPick(picker, apath);
 261                 } else if (pickType == 3) {
 262                         vtkAreaPicker picker = new vtkAreaPicker();
 263                         lock();
 264                         picker.Pick(new double[]{ax, ay,0}, ren);
 265                         unlock();
 266                         vtkAssemblyPath apath = picker.GetPath();
 267                         return processPick(picker, apath);
 268                 } else if (pickType == 4) {
 269                         vtkCellPicker picker = new vtkCellPicker();
 270                         picker.SetTolerance(0.00001);
 271                         lock();
 272                         picker.Pick(new double[]{ax, ay,0}, ren);
 273                         unlock();
 274                         vtkAssemblyPath apath = picker.GetPath();
 275                         return processPick(picker, apath);
 276                 } else if (pickType == 5) {
 277                         vtkActor2DCollection coll = ren.GetActors2D();
 278                         coll.InitTraversal();
 279                         vtkActor2D a;
 280
 281                         List<vtkActor2D> picked = new ArrayList<vtkActor2D>();
 282                         while ((a = coll.GetNextItem()) != null) {
 283                                 double pos[] = a.GetPosition();
 284                                 // TODO : width and height do not seem to affect the perceived size of Actor2D.
 285                                 //        actual size should be fetched from mapper.
 286                                 double w = a.GetWidth();
 287                                 double h = a.GetHeight();
 288                                 int minx = (int)(pos[0]-w*0.5);
 289                                 int miny = (int)(pos[1]-h*0.5);
 290                                 int maxx = (int)(pos[0]+w*0.5);
 291                                 int maxy = (int)(pos[1]+h*0.5);
 292                                 if (minx <= ax && maxx >= ax &&
 293                                         miny <= ay && maxy >= ay) {
 294                                         picked.add(a);
 295                                 }
 296                         }
 297                         return picked.toArray(new vtkProp[picked.size()]);
 298                 }
 299
 300                 return null;
 301         }
 302
 303         public vtkProp[] pick2(int x, int y) {
 304                 vtkRenderWindow rw = getRenderWindow();
 305                 vtkRenderer ren = getRenderer();
 306
 307 //              vtkPicker picker = new vtkPicker();
 308 //              vtkAbstractPicker picker = new vtkAbstractPicker();
 309 //              picker.Pick(x, rw.GetSize()[1] - y, ren);
 310 //              // see page 60 of VTK user's guide
 311 //
 312                 if (pickType == 0) {
 313
 314                         vtkPropPicker picker = new vtkPropPicker();
 315                         lock();
 316                         picker.PickProp(x, rw.GetSize()[1] - y, ren);
 317
 318                         unlock();
 319                         vtkPropCollection coll = picker.GetPickList();
 320                         return processPick(picker, coll);
 321
 322                 } else if (pickType == 1) {
 323                         if (scenePicker == null) {
 324                                 scenePicker = new vtkScenePicker();
 325                                 scenePicker.SetRenderer(ren);
 326                                 scenePicker.EnableVertexPickingOn();
 327                                 scenePicker.DebugOn();
 328
 329                         }
 330                         lock();
 331
 332
 333                         vtkAssemblyPath apath = ren.PickProp(x, rw.GetSize()[1] - y);
 334
 335                         unlock();
 336
 337                         if (apath != null) {
 338                                 apath.InitTraversal();
 339
 340
 341                                 vtkAssemblyNode node = apath.GetLastNode();
 342                                 vtkProp test = (vtkProp) node.GetViewProp();
 343                                 apath.Delete();
 344                                 node.Delete();
 345                                 return new vtkProp[]{test};
 346
 347                         }
 348
 349                 } else if (pickType == 2) {
 350                         vtkPointPicker picker = new vtkPointPicker();
 351                         picker.SetTolerance(2.0/(double)rw.GetSize()[0]);
 352                         lock();
 353                         picker.Pick(new double[]{x, rw.GetSize()[1] - y,0}, ren);
 354                         unlock();
 355                         vtkProp3DCollection coll = picker.GetProp3Ds();
 356                         return processPick(picker, coll);
 357                 } else if (pickType == 3) {
 358                         vtkAreaPicker picker = new vtkAreaPicker();
 359                         lock();
 360                         picker.Pick(new double[]{x, rw.GetSize()[1] - y,0}, ren);
 361                         //picker.AreaPick(x-1, rw.GetSize()[1] - y-1,x+1,rw.GetSize()[1] - y+1, ren);
 362                         unlock();
 363                         vtkProp3DCollection coll = picker.GetProp3Ds();
 364                         return processPick(picker, coll);
 365                 } else if (pickType == 4) {
 366                         vtkCellPicker picker = new vtkCellPicker();
 367                         picker.SetTolerance(2.0/(double)rw.GetSize()[0]);
 368                         lock();
 369                         picker.Pick(new double[]{x, rw.GetSize()[1] - y,0}, ren);
 370                         unlock();
 371                         vtkProp3DCollection coll = picker.GetProp3Ds();
 372                         return processPick(picker, coll);
 373                 }
 374
 375                 return null;
 376         }
 377
 378         private vtkProp[] processPick(vtkAbstractPicker picker, vtkAssemblyPath apath) {
 379 //              double[] pickPos = picker.GetPickPosition();
 380                 picker.Delete();
 381                 if (apath != null) {
 382                         apath.InitTraversal();
 383                         vtkProp result[] = new vtkProp[apath.GetNumberOfItems()];
 384                         for (int i = apath.GetNumberOfItems()-1; i >= 0; i--) {
 385                                 vtkAssemblyNode node = apath.GetNextNode();
 386                                 vtkProp test = (vtkProp) node.GetViewProp();
 387 //                              System.out.println("Picked: " + test.GetClassName() + " " + test.GetVTKId());
 388                                 result[i] = test;
 389                                 node.Delete();
 390                         }
 391                         apath.Delete();
 392                         return result;
 393
 394                 }
 395                 return null;
 396         }
 397
 398         private vtkProp[] processPick(vtkAbstractPicker picker, vtkPropCollection coll) {
 399 //              double[] pickPos = picker.GetPickPosition();
 400                 picker.Delete();
 401                 if (coll != null) {
 402                         coll.InitTraversal();
 403                         vtkProp result[] = new vtkProp[coll.GetNumberOfItems()];
 404                         for (int i = coll.GetNumberOfItems()-1; i >= 0; i--) {
 405                                 vtkProp test = coll.GetNextProp();
 406
 407 //                              System.out.println("Picked: " + test.GetClassName() + " " + test.GetVTKId());
 408                                 result[i] = test;
 409
 410                         }
 411                         coll.Delete();
 412                         return result;
 413
 414                 }
 415                 return null;
 416         }
 417
 418
 419
 420 }