Geben Sie ein QTclVtkWidget ein. VTK ist eine leistungsfähige 3D Bibliothek, die in C++ geschrieben ist und mit der Scriptsprache Tcl programmiert werden kann. Zu einer genauen Beschreibung von VTK sehen Sie sich bitte VTK documentation sowie die zugehörige Literatur an.
Beispiel für die Visualisierung eines 2D Datensatzes data1.vtk (surface.tcl)
# create pipeline # create a hue lookup table vtkLookupTable lut # blue to red lut SetHueRange 0.66667 0.0 lut Build # create black to white colormap vtkLookupTable lbw # black to white lbw SetHueRange 0 0.0 lbw SetSaturationRange 0 0 lbw SetValueRange 0 1 vtkStructuredPointsReader reader reader SetFileName "data1.vtk" reader Update #reader needed otherwise range 0..1 set valuerange [[reader GetOutput] GetScalarRange] set minv [lindex $valuerange 0] set maxv [lindex $valuerange 1] # puts "data range $minv .. $maxv" set dims [[reader GetOutput] GetDimensions] set dim1 [lindex $dims 0] set dim2 [lindex $dims 1] set dim3 [lindex $dims 2] # puts "dim1 = $dim1 dim2 = $dim2" # volgende echt nodig ... # vtkStructuredPointsGeometryFilter plane vtkImageDataGeometryFilter plane plane SetInput [reader GetOutput] # SetExtent not needed .. vtkWarpScalar warp warp SetInput [plane GetOutput] warp UseNormalOn warp SetNormal 0.0 0.0 1 warp SetScaleFactor 1 vtkCastToConcrete caster caster SetInput [warp GetOutput] vtkPolyDataNormals normals normals SetInput [caster GetPolyDataOutput] normals SetFeatureAngle 60 vtkPolyDataMapper planeMapper planeMapper SetInput [normals GetOutput] planeMapper SetLookupTable lut eval planeMapper SetScalarRange [[reader GetOutput] GetScalarRange] vtkTransform transform transform Scale 0.02 0.02 0.02 vtkActor dataActor dataActor SetMapper planeMapper dataActor SetUserMatrix [transform GetMatrix] renderer AddActor dataActor renderer SetBackground 1 1 1 set cam1 [renderer GetActiveCamera] $cam1 ParallelProjectionOff
data1.vtk folgt:
data1.vtk könnte eine Profilmessung sein. Ihr pvserver könnte data1.vtk generieren lassen und den Bildschirm mit den neuen Messungen updaten, wenn Sie verfügbar sind.
# vtk DataFile Version 2.0 2D scalar data ASCII DATASET STRUCTURED_POINTS DIMENSIONS 20 20 1 ORIGIN -10.000 -10.000 0.000 SPACING 1.000 1.000 1.000 POINT_DATA 400 SCALARS scalars float LOOKUP_TABLE default 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 0.0 0.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0 0.0 1.5 3.0 3.0 3.0 3.0 3.0 3.0 1.5 0.0 0.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 0.0 0.0 1.5 3.0 4.5 4.5 4.5 4.5 3.0 1.5 0.0 0.0 1.0 2.0 3.0 3.0 3.0 3.0 2.0 1.0 0.0 0.0 1.5 3.0 4.5 6.0 6.0 4.5 3.0 1.5 0.0 0.0 1.0 2.0 3.0 4.0 4.0 3.0 2.0 1.0 0.0 0.0 1.5 3.0 4.5 6.0 6.0 4.5 3.0 1.5 0.0 0.0 1.0 2.0 3.0 4.0 4.0 3.0 2.0 1.0 0.0 0.0 1.5 3.0 4.5 4.5 4.5 4.5 3.0 1.5 0.0 0.0 1.0 2.0 3.0 3.0 3.0 3.0 2.0 1.0 0.0 0.0 1.5 3.0 3.0 3.0 3.0 3.0 3.0 1.5 0.0 0.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 0.0 0.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 0.0 0.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 0.0 0.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.0 0.0 2.0 4.0 4.0 4.0 4.0 4.0 4.0 2.0 0.0 0.0 0.5 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.0 0.0 2.0 4.0 6.0 6.0 6.0 6.0 4.0 2.0 0.0 0.0 0.5 1.0 1.5 1.5 1.5 1.5 1.0 0.5 0.0 0.0 2.0 4.0 6.0 8.0 8.0 6.0 4.0 2.0 0.0 0.0 0.5 1.0 1.5 2.0 2.0 1.5 1.0 0.5 0.0 0.0 2.0 4.0 6.0 8.0 8.0 6.0 4.0 2.0 0.0 0.0 0.5 1.0 1.5 2.0 2.0 1.5 1.0 0.5 0.0 0.0 2.0 4.0 6.0 6.0 6.0 6.0 4.0 2.0 0.0 0.0 0.5 1.0 1.5 1.5 1.5 1.5 1.0 0.5 0.0 0.0 2.0 4.0 4.0 4.0 4.0 4.0 4.0 2.0 0.0 0.0 0.5 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.0 0.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 0.0 0.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Es folgen die entsprechenden Slot Funktionen.
typedef struct // (todo: define your data structure here) { int xangle; } DATA; static int slotInit(PARAM *p, DATA *d) { if(p == NULL || d == NULL) return -1; d->xangle = 0; pvDownloadFile(p,"data1.vtk"); //... pvVtkTclScript(p,VtkTclWidget1,"surface.tcl"); pvVtkTclPrintf(p,VtkTclWidget1,"dataActor RotateX %d",0); pvVtkTclPrintf(p,VtkTclWidget1,"dataActor RotateY %d",0); pvVtkTclPrintf(p,VtkTclWidget1,"renderer Render"); pvVtkTclPrintf(p,VtkTclWidget1,"reader Modified"); pvVtkTclPrintf(p,VtkTclWidget1,"reader Update"); pvVtkTclPrintf(p,VtkTclWidget1,"renderer Render"); //... return 0; } static int slotSliderEvent(PARAM *p, int id, DATA *d, int val) { if(p == NULL || id == 0 || d == NULL || val < -1000) return -1; if(id == Slider1) { int delta; delta = (val-50)*3 - d->xangle; d->xangle += delta; pvVtkTclPrintf(p,VtkTclWidget1,"reader SetFileName \"data1.vtk\""); pvVtkTclPrintf(p,VtkTclWidget1,"reader Modified"); pvVtkTclPrintf(p,VtkTclWidget1,"reader Update"); pvVtkTclPrintf(p,VtkTclWidget1,"dataActor RotateX %d",delta); pvVtkTclPrintf(p,VtkTclWidget1,"renderer Render"); } return 0; }