VTK/Examples/Python/GeometricObjects/Display/PlatonicSolid

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Display all five Platonic solids in a grid.

PlatonicSolid.py

#!/usr/bin/env python

import vtk

class PlatonicSolids():
    
    def PlatonicSolids(self):

        # Each face has a different cell scalar
        # So create a lookup table with a different colour
        # for each face.
        lut = vtk.vtkLookupTable()
        lut.SetNumberOfTableValues(20)
        lut.SetTableRange(0.0, 19.0)
        lut.Build()
        lut.SetTableValue(0, 0, 0, 0)
        lut.SetTableValue(1, 0, 0, 1)
        lut.SetTableValue(2, 0, 1, 0)
        lut.SetTableValue(3, 0, 1, 1)
        lut.SetTableValue(4, 1, 0, 0)
        lut.SetTableValue(5, 1, 0, 1)
        lut.SetTableValue(6, 1, 1, 0)
        lut.SetTableValue(7, 1, 1, 1)
        lut.SetTableValue(8, 0.7, 0.7, 0.7)
        lut.SetTableValue(9, 0, 0, 0.7)
        lut.SetTableValue(10, 0, 0.7, 0)
        lut.SetTableValue(11, 0, 0.7, 0.7)
        lut.SetTableValue(12, 0.7, 0, 0)
        lut.SetTableValue(13, 0.7, 0, 0.7)
        lut.SetTableValue(14, 0.7, 0.7, 0)
        lut.SetTableValue(15, 0, 0, 0.4)
        lut.SetTableValue(16, 0, 0.4, 0)
        lut.SetTableValue(17, 0, 0.4, 0.4)
        lut.SetTableValue(18, 0.4, 0, 0)
        lut.SetTableValue(19, 0.4, 0, 0.4)
                
        PlatonicSolids = list()
        # There are five Platonic solids.
        PlatonicSolids.append(vtk.vtkPlatonicSolidSource())
        PlatonicSolids.append(vtk.vtkPlatonicSolidSource())
        PlatonicSolids.append(vtk.vtkPlatonicSolidSource())
        PlatonicSolids.append(vtk.vtkPlatonicSolidSource())
        PlatonicSolids.append(vtk.vtkPlatonicSolidSource())
        # Specify the Platonic Solid to create.
        for idx, item in enumerate(PlatonicSolids):
            PlatonicSolids[idx].SetSolidType(idx)
            names = ["Tetrahedron","Cube","Octahedron","Icosahedron", "Dodecahedron"]
        
        renderers = list()
        mappers = list()
        actors = list()
        textmappers = list()
        textactors = list()
        
        # Create a common text property.
        textProperty = vtk.vtkTextProperty()
        textProperty.SetFontSize(10)
        textProperty.SetJustificationToCentered()
        
        # Create a parametric function source, renderer, mapper 
        # and actor for each object.
        for idx, item in enumerate(PlatonicSolids):
            PlatonicSolids[idx].Update()
            
            mappers.append(vtk.vtkPolyDataMapper())
            mappers[idx].SetInputConnection(PlatonicSolids[idx].GetOutputPort())
            mappers[idx].SetLookupTable(lut)
            mappers[idx].SetScalarRange(0, 20)
            
            actors.append(vtk.vtkActor())
            actors[idx].SetMapper(mappers[idx])
            
            textmappers.append(vtk.vtkTextMapper())
            textmappers[idx].SetInput(names[idx])
            textmappers[idx].SetTextProperty(textProperty)
            
            textactors.append(vtk.vtkActor2D())
            textactors[idx].SetMapper(textmappers[idx])
            textactors[idx].SetPosition(120, 16)
            
            renderers.append(vtk.vtkRenderer())
            
        rowDimensions = 3
        colDimensions = 2
        
        for idx in range(rowDimensions * colDimensions):
            if idx >= len(PlatonicSolids):
                renderers.append(vtk.vtkRenderer)
        
        rendererSize = 300
        
        # Create the RenderWindow
        #
        renderWindow = vtk.vtkRenderWindow()
        renderWindow.SetSize(rendererSize * rowDimensions / colDimensions, rendererSize * colDimensions )
        
        # Add and position the renders to the render window.
        viewport = list()
        idx = -1
        for row in range(rowDimensions):
            for col in range(colDimensions):
                idx += 1
                viewport[:] = []
                viewport.append(float(col) * rendererSize / (colDimensions * rendererSize))
                viewport.append(float(rowDimensions - (row+1)) * rendererSize / (rowDimensions * rendererSize))
                viewport.append(float(col+1)*rendererSize / (colDimensions * rendererSize))
                viewport.append(float(rowDimensions - row) * rendererSize / (rowDimensions * rendererSize))
                                
                if idx > (len(PlatonicSolids) - 1):
                    continue

                renderers[idx].SetViewport(viewport)
                renderWindow.AddRenderer(renderers[idx])
                
                renderers[idx].AddActor(actors[idx])
                renderers[idx].AddActor(textactors[idx])
                renderers[idx].SetBackground(0.4,0.3,0.2)
        
        interactor = vtk.vtkRenderWindowInteractor()
        interactor.SetRenderWindow(renderWindow)
        
        renderWindow.Render()

        interactor.Start()
    
if __name__ == "__main__":
    po = PlatonicSolids()
    po.PlatonicSolids()