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