import vtk
import ovtk
# Read in an image and compute a luminance value. The image is
# extracted as a set of polygons (vtkImageDataGeometryFilter). We then
# will warp the plane using the scalar (luminance) values.
reader = vtk.vtkBMPReader()
reader.SetFileName(ovtk.findFile("vtk/data/masonry.bmp"))
luminance = vtk.vtkImageLuminance()
luminance.SetInputConnection(reader.GetOutputPort())
geometry = vtk.vtkImageDataGeometryFilter()
geometry.SetInputConnection(luminance.GetOutputPort())
warp = vtk.vtkWarpScalar()
warp.SetInputConnection(geometry.GetOutputPort())
warp.SetScaleFactor(-0.1)
# Use vtkMergeFilter to combine the original image with the warped
# geometry.
merge = vtk.vtkMergeFilter()
merge.SetGeometry(warp.GetOutput())
merge.SetScalars(reader.GetOutput())
mapper = vtk.vtkDataSetMapper()
mapper.SetInputConnection(merge.GetOutputPort())
mapper.SetScalarRange(0, 255)
mapper.ImmediateModeRenderingOff()
actor = vtk.vtkActor()
actor.SetMapper(mapper)
# Add the actors to the renderer, set the background and size
ovtk.addActor(actor)
mapInlet = vtk.vtkPolyDataMapper() mapInlet.SetInputConnection(inlet.GetOutputPort()) mapInlet.ScalarVisibilityOff() inletActor = vtk.vtkActor() inletActor.SetMapper(mapInlet) inletActor.GetProperty().SetColor(0, 0, 0) outline = vtk.vtkStructuredGridOutlineFilter() outline.SetInputConnection(reader.GetOutputPort()) mapOutline = vtk.vtkPolyDataMapper() mapOutline.SetInputConnection(outline.GetOutputPort()) outlineActor = vtk.vtkActor() outlineActor.SetMapper(mapOutline) outlineActor.GetProperty().SetColor(0, 0, 0) ovtk.addActor(table1Actor) ovtk.addActor(table2Actor) ovtk.addActor(FilingCabinet1Actor) ovtk.addActor(FilingCabinet2Actor) ovtk.addActor(bookshelf1TopActor) ovtk.addActor(bookshelf1BottomActor) ovtk.addActor(bookshelf1FrontActor) ovtk.addActor(bookshelf1BackActor) ovtk.addActor(bookshelf1LHSActor) ovtk.addActor(bookshelf1RHSActor) ovtk.addActor(bookshelf2TopActor) ovtk.addActor(bookshelf2BottomActor) ovtk.addActor(bookshelf2FrontActor) ovtk.addActor(bookshelf2BackActor) ovtk.addActor(bookshelf2LHSActor) ovtk.addActor(bookshelf2RHSActor)
cone = vtk.vtkConeSource() coneMapper = vtk.vtkPolyDataMapper() coneMapper.SetInputConnection(cone.GetOutputPort()) coneActor = vtk.vtkActor() coneActor.SetMapper(coneMapper) coneActor.SetPosition(0, 0, .25) coneActor.GetProperty().SetColor(0, 1, 0) # top part of the assembly cylinder = vtk.vtkCylinderSource() cylinderMapper = vtk.vtkPolyDataMapper() cylinderMapper.SetInputConnection(cylinder.GetOutputPort()) cylinderMapper.SetResolveCoincidentTopologyToPolygonOffset() cylinderActor = vtk.vtkActor() cylinderActor.SetMapper(cylinderMapper) cylinderActor.GetProperty().SetColor(1, 0, 0) # Create the assembly and add the 4 parts to it. Also set the origin, # position and orientation in space. assembly = vtk.vtkAssembly() assembly.AddPart(cylinderActor) assembly.AddPart(sphereActor) assembly.AddPart(cubeActor) assembly.AddPart(coneActor) assembly.SetOrigin(5, 10, 15) assembly.AddPosition(5, 0, 0) assembly.RotateX(15) ovtk.addActor(assembly)
cutMapper.SetInput(cutPoly)
cutMapper.SetInputConnection(cutTriangles.GetOutputPort())
cutActor = vtk.vtkActor()
cutActor.SetMapper(cutMapper)
cutActor.GetProperty().SetColor(peacock)
# The clipped part of the cow is rendered wireframe.
restMapper = vtk.vtkPolyDataMapper()
restMapper.SetInput(clipper.GetClippedOutput())
restMapper.ScalarVisibilityOff()
restActor = vtk.vtkActor()
restActor.SetMapper(restMapper)
restActor.GetProperty().SetRepresentationToWireframe()
# Add the actors to the renderer, set the background and size
ovtk.addActor(clipActor)
ovtk.addActor(cutActor)
ovtk.addActor(restActor)
# Lets you move the cut plane back and forth by invoking the function
# Cut with the appropriate plane value (essentially a distance from
# the original plane). This is not used in this code but should give
# you an idea of how to define a function to do this.
def Cut(v):
clipper.SetValue(v)
cutEdges.SetValue(0, v)
cutStrips.Update()
cutPoly.SetPoints(cutStrips.GetOutput().GetPoints())
cutPoly.SetPolys(cutStrips.GetOutput().GetLines())
cutMapper.Update()
appendF = vtk.vtkAppendPolyData() appendF.AddInput(plane.GetOutput()) appendF.AddInput(plane2.GetOutput()) appendF.AddInput(plane3.GetOutput()) warp = vtk.vtkWarpScalar() warp.SetInputConnection(appendF.GetOutputPort()) warp.UseNormalOn() warp.SetNormal(1.0, 0.0, 0.0) warp.SetScaleFactor(2.5) normals = vtk.vtkPolyDataNormals() normals.SetInput(warp.GetPolyDataOutput()) normals.SetFeatureAngle(60) planeMapper = vtk.vtkPolyDataMapper() planeMapper.SetInputConnection(normals.GetOutputPort()) planeMapper.SetScalarRange(pl3d.GetOutput().GetScalarRange()) planeActor = vtk.vtkActor() planeActor.SetMapper(planeMapper) planeActor.GetProperty().SetLighting(0) # The outline provides context for the data and the planes. outline = vtk.vtkStructuredGridOutlineFilter() outline.SetInputConnection(pl3d.GetOutputPort()) outlineMapper = vtk.vtkPolyDataMapper() outlineMapper.SetInputConnection(outline.GetOutputPort()) outlineActor = vtk.vtkActor() outlineActor.SetMapper(outlineMapper) outlineActor.GetProperty().SetColor(0, 0, 0) ovtk.addActor(outlineActor) ovtk.addActor(planeActor)
# This simple example shows how to do basic texture mapping.
import vtk
import ovtk
# Load in the texture map. A texture is any unsigned char image. If it
# is not of this type, you will have to map it through a lookup table
# or by using vtkImageShiftScale.
bmpReader = vtk.vtkBMPReader()
bmpReader.SetFileName(ovtk.findFile("vtk/data/masonry.bmp"))
atext = vtk.vtkTexture()
atext.SetInputConnection(bmpReader.GetOutputPort())
atext.InterpolateOn()
# Create a plane source and actor. The vtkPlanesSource generates
# texture coordinates.
plane = vtk.vtkPlaneSource()
planeMapper = vtk.vtkPolyDataMapper()
planeMapper.SetInputConnection(plane.GetOutputPort())
planeActor = vtk.vtkActor()
planeActor.SetMapper(planeMapper)
planeActor.SetTexture(atext)
# Add the actors to the renderer, set the background and size
ovtk.addActor(planeActor)
cutMapper.SetInput(cutPoly)
cutMapper.SetInputConnection(cutTriangles.GetOutputPort())
cutActor = vtk.vtkActor()
cutActor.SetMapper(cutMapper)
cutActor.GetProperty().SetColor(peacock)
# The clipped part of the cow is rendered wireframe.
restMapper = vtk.vtkPolyDataMapper()
restMapper.SetInput(clipper.GetClippedOutput())
restMapper.ScalarVisibilityOff()
restActor = vtk.vtkActor()
restActor.SetMapper(restMapper)
restActor.GetProperty().SetRepresentationToWireframe()
# Add the actors to the renderer, set the background and size
ovtk.addActor(clipActor)
ovtk.addActor(cutActor)
ovtk.addActor(restActor)
# Lets you move the cut plane back and forth by invoking the function
# Cut with the appropriate plane value (essentially a distance from
# the original plane). This is not used in this code but should give
# you an idea of how to define a function to do this.
def Cut(v):
clipper.SetValue(v)
cutEdges.SetValue(0, v)
cutStrips.Update()
cutPoly.SetPoints(cutStrips.GetOutput().GetPoints())
cutPoly.SetPolys(cutStrips.GetOutput().GetLines())
cutMapper.Update()
