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#!/usr/bin/env python
# Run this test like so:
# $ vtkpython TestTextureGlyph.py -D $VTK_DATA_ROOT \
# -B $VTK_DATA_ROOT/Baseline/Graphics/
#
# $ vtkpython TestTextureGlyph.py --help
# provides more details on other options.
import os
import os.path
import vtk
from vtk.test import Testing
class TestTextureGlyph(Testing.vtkTest):
def testGlyphs(self):
"""Test if texturing of the glyphs works correctly."""
# The Glyph
cs = vtk.vtkCubeSource()
cs.SetXLength(2.0); cs.SetYLength(1.0); cs.SetZLength(0.5)
# Create input point data.
pts = vtk.vtkPoints()
pts.InsertPoint(0, (1,1,1))
pts.InsertPoint(1, (0,0,0))
pts.InsertPoint(2, (-1,-1,-1))
polys = vtk.vtkCellArray()
polys.InsertNextCell(1)
polys.InsertCellPoint(0)
polys.InsertNextCell(1)
polys.InsertCellPoint(1)
polys.InsertNextCell(1)
polys.InsertCellPoint(2)
pd = vtk.vtkPolyData()
pd.SetPoints(pts)
pd.SetPolys(polys)
# Orient the glyphs as per vectors.
vec = vtk.vtkFloatArray()
vec.SetNumberOfComponents(3)
vec.InsertTuple3(0, 1, 0, 0)
vec.InsertTuple3(1, 0, 1, 0)
vec.InsertTuple3(2, 0, 0, 1)
pd.GetPointData().SetVectors(vec)
# The glyph filter.
g = vtk.vtkGlyph3D()
g.SetScaleModeToDataScalingOff()
g.SetVectorModeToUseVector()
g.SetInput(pd)
g.SetSource(cs.GetOutput())
m = vtk.vtkPolyDataMapper()
m.SetInputConnection(g.GetOutputPort())
a = vtk.vtkActor()
a.SetMapper(m)
# The texture.
img_file = os.path.join(Testing.VTK_DATA_ROOT, "Data",
"masonry.bmp")
img_r = vtk.vtkBMPReader()
img_r.SetFileName(img_file)
t = vtk.vtkTexture()
t.SetInputConnection(img_r.GetOutputPort())
t.InterpolateOn()
a.SetTexture(t)
# Renderer, RenderWindow etc.
ren = vtk.vtkRenderer()
ren.SetBackground(0.5, 0.5, 0.5)
ren.AddActor(a)
ren.ResetCamera();
cam = ren.GetActiveCamera()
cam.Azimuth(-90)
cam.Zoom(1.4)
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
rwi = vtk.vtkRenderWindowInteractor()
rwi.SetRenderWindow(renWin)
rwi.Initialize()
rwi.Render()
# Compare the images and test.
img_file = "TestTextureGlyph.png"
Testing.compareImage(renWin, Testing.getAbsImagePath(img_file))
# Interact if necessary.
if Testing.isInteractive():
rwi.Start()
if __name__ == "__main__":
Testing.main([(TestTextureGlyph, 'test')])
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