samples/CSharp/WPF_WinForms/OCCViewer.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using System.Windows.Forms;
   6
   7 namespace IE_WPF_WinForms
   8 {
   9     public enum CurrentAction3d
  10     {
  11         CurAction3d_Nothing,
  12         CurAction3d_DynamicZooming,
  13         CurAction3d_WindowZooming,
  14         CurAction3d_DynamicPanning,
  15         CurAction3d_GlobalPanning,
  16         CurAction3d_DynamicRotation
  17     }
  18     public enum CurrentPressedKey
  19     {
  20         CurPressedKey_Nothing,
  21         CurPressedKey_Ctrl,
  22         CurPressedKey_Shift
  23     }
  24     public enum ModelFormat
  25     {
  26         BREP,
  27         STEP,
  28         IGES,
  29         VRML,
  30         STL,
  31         IMAGE
  32     }
  33
  34     public enum DisplayMode
  35     {
  36         Wireframe,
  37         Shading
  38     }
  39
  40     public class OCCViewer : System.Windows.Forms.Form
  41     {
  42         public event EventHandler ZoomingFinished;
  43         protected void RaiseZoomingFinished()
  44         {
  45             if ( ZoomingFinished != null )
  46             {
  47                 ZoomingFinished( this, EventArgs.Empty );
  48             }
  49         }
  50
  51         public event EventHandler AvaliabiltyOfOperationsChanged;
  52         protected void RaiseAvaliabiltyOfOperationsChanged()
  53         {
  54             if ( AvaliabiltyOfOperationsChanged != null )
  55             {
  56                 AvaliabiltyOfOperationsChanged( this, EventArgs.Empty );
  57             }
  58         }
  59
  60         public OCCTProxy View { get; private set; }
  61         public CurrentAction3d CurrentMode { get; private set; }
  62         private CurrentPressedKey CurrentPressedKey { get; set; }
  63         private bool IsRectVisible { get; set; }
  64         public bool DegenerateMode { get; private set; }
  65
  66         public bool IsWireframeEnabled { get; private set; }
  67         public bool IsShadingEnabled { get; private set; }
  68         public bool IsTransparencyEnabled { get; private set; }
  69         public bool IsColorEnabled { get; private set; }
  70         public bool IsMaterialEnabled { get; private set; }
  71         public bool IsDeleteEnabled { get; private set; }
  72
  73         private float myCurZoom;// ~ Quantity_Factor
  74         private int myXmin;
  75         private int myYmin;
  76         private int myXmax;
  77         private int myYmax;
  78         private int myRectDownX;
  79         private int myRectDownY;
  80         private int myButtonDownX;
  81         private int myButtonDownY;
  82
  83         private ContextMenu Popup { get; set; }
  84         private MenuItem ContextWireframe;
  85         private MenuItem ContextShading;
  86         private MenuItem ContextColor;
  87         private MenuItem ContextMaterial;
  88         private MenuItem ContextDelete;
  89         private MenuItem ContextBackground;
  90         private MenuItem ContextTransparency;
  91
  92
  93         public OCCViewer()
  94         {
  95             InitializeComponent();
  96
  97             View = new OCCTProxy();
  98             View.InitOCCTProxy();
  99             if ( !View.InitViewer( this.Handle ) )
 100             {
 101                 MessageBox.Show( "Fatal Error during the graphic initialisation", "Error!" );
 102             }
 103
 104             CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 105             CurrentPressedKey = CurrentPressedKey.CurPressedKey_Nothing;
 106             IsRectVisible = false;
 107             DegenerateMode = true;
 108         }
 109
 110         private void InitializeComponent()
 111         {
 112             ControlBox = false;
 113             TopLevel = false;
 114
 115             this.ImeMode = System.Windows.Forms.ImeMode.NoControl;
 116
 117             SizeChanged += new System.EventHandler( OnSizeChanged );
 118             Paint += new System.Windows.Forms.PaintEventHandler( OnPaint );
 119
 120             MouseDown += new System.Windows.Forms.MouseEventHandler( OnMouseDown );
 121             MouseUp += new System.Windows.Forms.MouseEventHandler( OnMouseUp );
 122             MouseMove += new System.Windows.Forms.MouseEventHandler( OnMouseMove );
 123
 124             Popup = new ContextMenu();
 125             ContextWireframe = new MenuItem();
 126             ContextShading = new MenuItem();
 127             ContextColor = new MenuItem();
 128             ContextMaterial = new MenuItem();
 129             ContextTransparency = new MenuItem();
 130             ContextDelete = new MenuItem();
 131             ContextBackground = new MenuItem();
 132
 133             ContextWireframe.Text = "Wireframe";
 134             ContextShading.Text = "Shading";
 135             ContextColor.Text = "Color";
 136             ContextMaterial.Text = "Material";
 137             ContextTransparency.Text = "Transparency";
 138             ContextDelete.Text = "Delete";
 139             ContextBackground.Text = "Background";
 140
 141             ContextWireframe.Click += new System.EventHandler( ContextWireframe_Click );
 142             ContextShading.Click += new System.EventHandler( ContextShading_Click );
 143             ContextColor.Click += new System.EventHandler( ContextColor_Click );
 144             ContextMaterial.Click += new System.EventHandler( ContextMaterial_Click );
 145             ContextTransparency.Click += new System.EventHandler( ContextTransparency_Click );
 146             ContextDelete.Click += new System.EventHandler( ContextDelete_Click );
 147             ContextBackground.Click += new System.EventHandler( ContextBackground_Click );
 148
 149             Popup.MenuItems.AddRange( new MenuItem[] { ContextWireframe,
 150                                                            ContextShading,
 151                                                            ContextColor,
 152                                                            ContextMaterial,
 153                                                            ContextTransparency,
 154                                                            ContextDelete,
 155                                                        ContextBackground } );
 156             Popup.Popup += new System.EventHandler( OnPopup );
 157         }
 158
 159         private void OnPaint(object sender, System.Windows.Forms.PaintEventArgs e)
 160         {
 161             View.RedrawView();
 162             View.UpdateView();
 163         }
 164
 165         private void OnSizeChanged(object sender, System.EventArgs e)
 166         {
 167             View.UpdateView();
 168         }
 169
 170         public void ImportModel( ModelFormat theFormat )
 171         {
 172             int aFormat = 10;
 173             OpenFileDialog anOpenDialog = new OpenFileDialog();
 174             string aDataDir = ( (Environment.GetEnvironmentVariable("CASROOT")) + "\\..\\data" );
 175             string aFilter = "";
 176
 177             switch ( theFormat )
 178             {
 179                 case ModelFormat.BREP:
 180                     anOpenDialog.InitialDirectory = (aDataDir + "\\occ");
 181                     aFormat = 0;
 182                     aFilter = "BREP Files (*.brep *.rle)|*.brep; *.rle";
 183                     break;
 184                 case ModelFormat.STEP:
 185                     anOpenDialog.InitialDirectory = (aDataDir + "\\step");
 186                     aFormat = 1;
 187                     aFilter = "STEP Files (*.stp *.step)|*.stp; *.step";
 188                     break;
 189                 case ModelFormat.IGES:
 190                     anOpenDialog.InitialDirectory = (aDataDir + "\\iges");
 191                     aFormat = 2;
 192                     aFilter = "IGES Files (*.igs *.iges)|*.igs; *.iges";
 193                     break;
 194                 default:
 195                     break;
 196             }
 197
 198             anOpenDialog.Filter = aFilter + "|All files (*.*)|*.*";
 199             if (anOpenDialog.ShowDialog() == DialogResult.OK)
 200             {
 201                 string aFileName = anOpenDialog.FileName;
 202                 if (aFileName == "")
 203                 {
 204                     return;
 205                 }
 206
 207                 Cursor = System.Windows.Forms.Cursors.WaitCursor;
 208                 if ( !View.TranslateModel( aFileName, aFormat, true ) )
 209                 {
 210                     MessageBox.Show( "Cann't read this file", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning );
 211                 }
 212                 Cursor = System.Windows.Forms.Cursors.Default;
 213             }
 214             View.ZoomAllView();
 215         }
 216
 217         public void ExportModel( ModelFormat theFormat )
 218         {
 219             int aFormat = 10;
 220             SaveFileDialog saveDialog = new SaveFileDialog();
 221             string aDataDir = ( (Environment.GetEnvironmentVariable("CASROOT") ) + "\\..\\data" );
 222             string aFilter = "";
 223
 224             switch ( theFormat )
 225             {
 226                 case ModelFormat.BREP:
 227                     saveDialog.InitialDirectory = ( aDataDir + "\\occ" );
 228                     aFormat = 0;
 229                     aFilter = "BREP Files (*.brep *.rle)|*.brep; *.rle";
 230                     break;
 231                 case ModelFormat.STEP:
 232                     saveDialog.InitialDirectory = ( aDataDir + "\\step" );
 233                     aFormat = 1;
 234                     aFilter = "STEP Files (*.stp *.step)|*.step; *.stp";
 235                     break;
 236                 case ModelFormat.IGES:
 237                     saveDialog.InitialDirectory = ( aDataDir + "\\iges" );
 238                     aFormat = 2;
 239                     aFilter = "IGES Files (*.igs *.iges)| *.iges; *.igs";
 240                     break;
 241                 case ModelFormat.VRML:
 242                     saveDialog.InitialDirectory = ( aDataDir + "\\vrml" );
 243                     aFormat = 3;
 244                     aFilter = "VRML Files (*.vrml)|*.vrml";
 245                     break;
 246                 case ModelFormat.STL:
 247                     saveDialog.InitialDirectory = ( aDataDir + "\\stl" );
 248                     aFormat = 4;
 249                     aFilter = "STL Files (*.stl)|*.stl";
 250                     break;
 251                 case ModelFormat.IMAGE:
 252                     saveDialog.InitialDirectory = ( aDataDir + "\\images" );
 253                     aFormat = 5;
 254                     aFilter = "Images Files (*.bmp)|*.bmp";
 255                     break;
 256                 default:
 257                     break;
 258             }
 259
 260             saveDialog.Filter = aFilter;
 261             if ( saveDialog.ShowDialog() == DialogResult.OK )
 262             {
 263                 string aFileName = saveDialog.FileName;
 264                 if ( aFileName == "" )
 265                 {
 266                     return;
 267                 }
 268
 269                 Cursor = System.Windows.Forms.Cursors.WaitCursor;
 270                 if ( !View.TranslateModel( aFileName, aFormat, false ) )
 271                 {
 272                     MessageBox.Show( "Can not write this file", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning );
 273                 }
 274                 Cursor = System.Windows.Forms.Cursors.Default;
 275             }
 276         }
 277
 278         public void FitAll()
 279         {
 280             View.ZoomAllView();
 281         }
 282
 283         public void ZoomWindow()
 284         {
 285             CurrentMode = CurrentAction3d.CurAction3d_WindowZooming;
 286         }
 287
 288         public void DynamicZooming()
 289         {
 290             CurrentMode = CurrentAction3d.CurAction3d_DynamicZooming;
 291         }
 292
 293         public void DynamicPanning()
 294         {
 295             CurrentMode = CurrentAction3d.CurAction3d_DynamicPanning;
 296         }
 297
 298         public void GlobalPanning()
 299         {
 300             myCurZoom = View.Scale();
 301             CurrentMode = CurrentAction3d.CurAction3d_GlobalPanning;
 302         }
 303
 304         public void AxoView()
 305         {
 306             View.AxoView();
 307         }
 308
 309         public void FrontView()
 310         {
 311             View.FrontView();
 312         }
 313
 314         public void TopView()
 315         {
 316             View.TopView();
 317         }
 318
 319         public void LeftView()
 320         {
 321             View.LeftView();
 322         }
 323
 324         public void BackView()
 325         {
 326             View.BackView();
 327         }
 328
 329         public void RightView()
 330         {
 331             View.RightView();
 332         }
 333
 334         public void Reset()
 335         {
 336             View.Reset();
 337         }
 338
 339         public void BottomView()
 340         {
 341             View.BottomView();
 342         }
 343
 344         public void HiddenOff()
 345         {
 346             View.SetDegenerateModeOff();
 347             DegenerateMode = false;
 348         }
 349
 350         public void HiddenOn()
 351         {
 352             View.SetDegenerateModeOn();
 353             DegenerateMode = true;
 354         }
 355
 356         public void DynamicRotation()
 357         {
 358             CurrentMode = CurrentAction3d.CurAction3d_DynamicRotation;
 359         }
 360
 361         public void SelectionChanged()
 362         {
 363             switch ( View.DisplayMode() )
 364             {
 365                 case -1:
 366                     IsShadingEnabled = false;
 367                     IsWireframeEnabled = false;
 368                     break;
 369                 case 0:
 370                     IsWireframeEnabled = false;
 371                     IsShadingEnabled = true;
 372                     IsTransparencyEnabled = false;
 373                     break;
 374                 case 1:
 375                     IsWireframeEnabled = true;
 376                     IsShadingEnabled = false;
 377                     IsTransparencyEnabled = true;
 378                     break;
 379                 case 10:
 380                     IsWireframeEnabled = true;
 381                     IsShadingEnabled = true;
 382                     IsTransparencyEnabled = true;
 383                     break;
 384                 default:
 385                     break;
 386             }
 387
 388             if ( View.IsObjectSelected() )
 389             {
 390                 IsColorEnabled = true;
 391                 IsMaterialEnabled = true;
 392                 IsDeleteEnabled = true;
 393             }
 394             else
 395             {
 396                 IsColorEnabled = false;
 397                 IsMaterialEnabled = false;
 398                 IsTransparencyEnabled = false;
 399                 IsDeleteEnabled = false;
 400             }
 401
 402             RaiseAvaliabiltyOfOperationsChanged();
 403         }
 404
 405         public void ChangeColor( bool IsObjectColor )
 406         {
 407             int r, g, b;
 408             if ( IsObjectColor )
 409             {
 410                 r = View.GetObjColR();
 411                 g = View.GetObjColG();
 412                 b = View.GetObjColB();
 413             }
 414             else
 415             {
 416                 r = View.GetBGColR();
 417                 g = View.GetBGColG();
 418                 b = View.GetBGColB();
 419             }
 420             System.Windows.Forms.ColorDialog ColDlg = new System.Windows.Forms.ColorDialog();
 421             ColDlg.Color = System.Drawing.Color.FromArgb( r, g, b );
 422             if ( ColDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK )
 423             {
 424                 System.Drawing.Color c = ColDlg.Color;
 425                 r = c.R;
 426                 g = c.G;
 427                 b = c.B;
 428                 if ( IsObjectColor )
 429                 {
 430                     View.SetColor( r, g, b );
 431                 }
 432                 else
 433                 {
 434                     View.SetBackgroundColor( r, g, b );
 435                 }
 436             }
 437             View.UpdateCurrentViewer();
 438         }
 439
 440         public void Wireframe()
 441         {
 442             View.SetDisplayMode( (int)DisplayMode.Wireframe );
 443             View.UpdateCurrentViewer();
 444
 445             SelectionChanged();
 446             RaiseZoomingFinished();
 447         }
 448
 449         public void Shading()
 450         {
 451             View.SetDisplayMode( (int)DisplayMode.Shading );
 452             View.UpdateCurrentViewer();
 453
 454             SelectionChanged();
 455             RaiseZoomingFinished();
 456         }
 457
 458         public void Color()
 459         {
 460             ChangeColor( true );
 461         }
 462
 463         public void Background()
 464         {
 465             ChangeColor( false );
 466         }
 467
 468         public void Material()
 469         {
 470             MaterialDlg aDlg = new MaterialDlg( View );
 471             aDlg.ShowDialog();
 472         }
 473
 474         public void Transparency()
 475         {
 476             TransparencyDialog dlg = new TransparencyDialog();
 477             dlg.View = View;
 478             dlg.ShowDialog( this );
 479         }
 480
 481         public void Delete()
 482         {
 483             View.EraseObjects();
 484         }
 485
 486         public void OnKeyDown( System.Windows.Input.Key theKey )
 487         {
 488             if ( theKey == System.Windows.Input.Key.LeftShift ||
 489                  theKey == System.Windows.Input.Key.RightShift )
 490             {
 491                 CurrentPressedKey = CurrentPressedKey.CurPressedKey_Shift;
 492             }
 493             else if (theKey == System.Windows.Input.Key.LeftCtrl ||
 494                      theKey == System.Windows.Input.Key.RightCtrl )
 495             {
 496                 CurrentPressedKey = CurrentPressedKey.CurPressedKey_Ctrl;
 497             }
 498         }
 499
 500         public void OnKeyUp()
 501         {
 502             CurrentPressedKey = CurrentPressedKey.CurPressedKey_Nothing;
 503         }
 504
 505         protected void MultiDragEvent( int x, int y, int theState )
 506         {
 507             if ( theState == -1 ) //mouse is down
 508             {
 509                 myButtonDownX = x;
 510                 myButtonDownY = y;
 511             }
 512             else if ( theState ==  1) //mouse is up
 513             {
 514                 View.ShiftSelect( Math.Min( myButtonDownX, x ), Math.Min( myButtonDownY, y ),
 515                                   Math.Max( myButtonDownX, x ), Math.Max( myButtonDownY, y ) );
 516             }
 517         }
 518
 519         protected void DragEvent( int x, int y, int theState )
 520         {
 521             if ( theState == -1 ) //mouse is down
 522             {
 523                 myButtonDownX = x;
 524                 myButtonDownY = y;
 525             }
 526             else if ( theState == 1 ) //mouse is up
 527             {
 528                 View.Select( Math.Min( myButtonDownX, x ), Math.Min( myButtonDownY, y ),
 529                              Math.Max( myButtonDownX, x ), Math.Max( myButtonDownY, y ) );
 530             }
 531         }
 532
 533         private void DrawRectangle( bool draw )
 534         {
 535             System.Drawing.Graphics gr = System.Drawing.Graphics.FromHwnd(Handle);
 536             System.Drawing.Pen p = null;
 537             if ( IsRectVisible || !draw )//erase the rect
 538             {
 539                 int r = View.GetBGColR();
 540                 int g = View.GetBGColG();
 541                 int b = View.GetBGColB();
 542                 p = new System.Drawing.Pen( System.Drawing.Color.FromArgb(r, g, b) );
 543                 IsRectVisible = false;
 544                 View.UpdateView();
 545             }
 546             else if ( draw )
 547             {
 548                 p = new System.Drawing.Pen( System.Drawing.Color.White );
 549                 IsRectVisible = true;
 550             }
 551             if ( p == null )
 552             {
 553                 return;
 554             }
 555             int x = Math.Min( myXmin, myXmax );
 556             int y = Math.Min( myYmin, myYmax );
 557             gr.DrawRectangle( p, x, y, Math.Abs(myXmax - myXmin), Math.Abs(myYmax - myYmin) );
 558             myRectDownX = Math.Max( myXmin, myXmax );
 559             myRectDownY = Math.Max( myYmin, myYmax );
 560         }
 561
 562         private void OnMouseDown( object sender, System.Windows.Forms.MouseEventArgs e )
 563         {
 564             if ( e.Button == MouseButtons.Left )
 565             {
 566                 myXmin = e.X;
 567                 myXmax = e.X;
 568                 myYmin = e.Y;
 569                 myYmax = e.Y;
 570                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl )
 571                 {
 572                     // start the dinamic zooming....
 573                     CurrentMode = CurrentAction3d.CurAction3d_DynamicZooming;
 574                 }
 575                 else
 576                 {
 577                     switch ( CurrentMode )
 578                     {
 579                         case CurrentAction3d.CurAction3d_Nothing:
 580                             if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Shift )
 581                             {
 582                                 MultiDragEvent( myXmax, myYmax, -1 );
 583                             }
 584                             else
 585                             {
 586                                 DragEvent( myXmax, myYmax, -1 );
 587                             }
 588                             break;
 589                         case CurrentAction3d.CurAction3d_DynamicRotation:
 590                             if ( !DegenerateMode )
 591                             {
 592                                 View.SetDegenerateModeOn();
 593                             }
 594                             View.StartRotation( e.X, e.Y );
 595                             break;
 596                         case CurrentAction3d.CurAction3d_WindowZooming:
 597                             Cursor = Cursors.Hand;
 598                             break;
 599                         default:
 600                             break;
 601                     }
 602                 }
 603             }
 604             else if ( e.Button == MouseButtons.Right )
 605             {
 606                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl )
 607                 {
 608                     if ( !DegenerateMode )
 609                     {
 610                         View.SetDegenerateModeOn();
 611                     }
 612                     View.StartRotation( e.X, e.Y );
 613                 }
 614                 else
 615                 {
 616                     Popup.Show( this, new System.Drawing.Point( e.X, e.Y ) );
 617                 }
 618             }
 619         }
 620
 621         private void OnMouseUp( object sender, System.Windows.Forms.MouseEventArgs e )
 622         {
 623             if ( e.Button == MouseButtons.Left )
 624             {
 625                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl )
 626                 {
 627                     return;
 628                 }
 629                 switch ( CurrentMode )
 630                 {
 631                     case CurrentAction3d.CurAction3d_Nothing:
 632                         if ( e.X == myXmin && e.Y == myYmin )
 633                         {
 634                             myXmax = e.X;
 635                             myYmax = e.Y;
 636                             if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Shift )
 637                             {
 638                                 View.ShiftSelect();
 639                             }
 640                             else
 641                             {
 642                                 View.Select();
 643                             }
 644                         }
 645                         else
 646                         {
 647                             myXmax = e.X;
 648                             myYmax = e.Y;
 649                             DrawRectangle( false );
 650                             if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Shift )
 651                             {
 652                                 MultiDragEvent( myXmax, myYmax, 1 );
 653                             }
 654                             else
 655                             {
 656                                 DragEvent( myXmax, myYmax, 1 );
 657                             }
 658                         }
 659                         break;
 660                     case CurrentAction3d.CurAction3d_DynamicZooming:
 661                         CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 662                         break;
 663                     case CurrentAction3d.CurAction3d_WindowZooming:
 664                         myXmax = e.X;
 665                         myYmax = e.Y;
 666                         DrawRectangle( false );
 667                         int ValZWMin = 1;
 668                         if ( Math.Abs(myXmax - myXmin) > ValZWMin &&
 669                              Math.Abs(myXmax - myYmax) > ValZWMin )
 670                         {
 671                             View.WindowFitAll( myXmin, myYmin, myXmax, myYmax );
 672                         }
 673                         Cursor = Cursors.Arrow;
 674                         RaiseZoomingFinished();
 675                         CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 676                         break;
 677                     case CurrentAction3d.CurAction3d_DynamicPanning:
 678                         CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 679                         break;
 680                     case CurrentAction3d.CurAction3d_GlobalPanning:
 681                         View.Place( e.X, e.Y, myCurZoom );
 682                         CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 683                         break;
 684                     case CurrentAction3d.CurAction3d_DynamicRotation:
 685                         CurrentMode = CurrentAction3d.CurAction3d_Nothing;
 686                         if ( !DegenerateMode )
 687                         {
 688                             View.SetDegenerateModeOff();
 689                         }
 690                         else
 691                         {
 692                             View.SetDegenerateModeOn();
 693                         }
 694                         break;
 695                     default:
 696                         break;
 697                 }
 698             }
 699             else if ( e.Button == MouseButtons.Right )
 700             {
 701                 if ( !DegenerateMode )
 702                 {
 703                     View.SetDegenerateModeOff();
 704                 }
 705                 else
 706                 {
 707                     View.SetDegenerateModeOn();
 708                 }
 709             }
 710
 711             SelectionChanged();
 712         }
 713
 714         private void OnMouseMove( object sender, System.Windows.Forms.MouseEventArgs e )
 715         {
 716             if ( e.Button == MouseButtons.Left ) //left button is pressed
 717             {
 718                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl )
 719                 {
 720                     View.Zoom(myXmax, myYmax, e.X, e.Y);
 721                     myXmax = e.X;
 722                     myYmax = e.Y;
 723                 }
 724                 else
 725                 {
 726                     switch ( CurrentMode )
 727                     {
 728                         case CurrentAction3d.CurAction3d_Nothing:
 729                             DrawRectangle( false );
 730                             myXmax = e.X;
 731                             myYmax = e.Y;
 732                             DrawRectangle( true );
 733                             break;
 734                         case CurrentAction3d.CurAction3d_DynamicZooming:
 735                             View.Zoom( myXmax, myYmax, e.X, e.Y );
 736                             myXmax = e.X;
 737                             myYmax = e.Y;
 738                             break;
 739                         case CurrentAction3d.CurAction3d_WindowZooming:
 740                             DrawRectangle( false );
 741                             myXmax = e.X;
 742                             myYmax = e.Y;
 743                             DrawRectangle( true );//add brush here
 744                             break;
 745                         case CurrentAction3d.CurAction3d_DynamicPanning:
 746                             View.Pan( e.X - myXmax, myYmax - e.Y );
 747                             myXmax = e.X;
 748                             myYmax = e.Y;
 749                             break;
 750                         case CurrentAction3d.CurAction3d_GlobalPanning:
 751                             break;
 752                         case CurrentAction3d.CurAction3d_DynamicRotation:
 753                             View.Rotation( e.X, e.Y );
 754                             View.RedrawView();
 755                             break;
 756                         default:
 757                             break;
 758                     }
 759                 }
 760             }
 761             else if ( e.Button == MouseButtons.Middle ) //middle button is pressed
 762             {
 763                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl )
 764                 {
 765                     View.Pan( e.X - myXmax, myYmax - e.Y );
 766                     myXmax = e.X;
 767                     myYmax = e.Y;
 768                 }
 769             }
 770             else if ( e.Button == MouseButtons.Right ) //right button is pressed
 771             {
 772                 if ( CurrentPressedKey == CurrentPressedKey.CurPressedKey_Ctrl)
 773                 {
 774                     View.Rotation( e.X, e.Y );
 775                 }
 776             }
 777             else // no buttons are pressed
 778             {
 779                 myXmax = e.X;
 780                 myYmax = e.Y;
 781                 View.MoveTo( e.X, e.Y );
 782             }
 783         }
 784
 785         private void OnPopup( object sender, System.EventArgs e )
 786         {
 787             ContextWireframe.Enabled = IsWireframeEnabled;
 788             ContextShading.Enabled = IsShadingEnabled;
 789             ContextColor.Enabled = IsColorEnabled;
 790             ContextMaterial.Enabled = IsMaterialEnabled;
 791             ContextDelete.Enabled = IsDeleteEnabled;
 792             ContextTransparency.Enabled = IsTransparencyEnabled;
 793             ContextBackground.Enabled = true;
 794         }
 795
 796         private void ContextWireframe_Click( object sender, System.EventArgs e )
 797         {
 798             Wireframe();
 799         }
 800
 801         private void ContextShading_Click( object sender, System.EventArgs e )
 802         {
 803             Shading();
 804         }
 805
 806         private void ContextColor_Click( object sender, System.EventArgs e )
 807         {
 808             Color();
 809         }
 810
 811         private void ContextMaterial_Click( object sender, System.EventArgs e )
 812         {
 813             Material();
 814         }
 815
 816         private void ContextTransparency_Click( object sender, System.EventArgs e )
 817         {
 818             Transparency();
 819         }
 820
 821         private void ContextDelete_Click( object sender, System.EventArgs e )
 822         {
 823             Delete();
 824         }
 825
 826         private void ContextBackground_Click( object sender, System.EventArgs e )
 827         {
 828             Background();
 829         }
 830     }
 831 }