from vtkmodules.vtkCommonCore import (
    vtkMath,
    vtkPoints,
)
from vtkmodules.vtkCommonDataModel import vtkPolyData
from vtkmodules.vtkFiltersCore import vtkExecutionTimer
from vtkmodules.vtkFiltersGeneral import vtkMarchingContourFilter
from vtkmodules.vtkImagingHybrid import vtkCheckerboardSplatter
from vtkmodules.vtkRenderingCore import (
    vtkActor,
    vtkCamera,
    vtkPolyDataMapper,
    vtkRenderWindow,
    vtkRenderWindowInteractor,
    vtkRenderer,
)
import vtkmodules.vtkInteractionStyle
import vtkmodules.vtkRenderingFreeType
import vtkmodules.vtkRenderingOpenGL2
import vtkmodules.test.Testing
from vtkmodules.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()

# Slat points into a cube
math = vtkMath()
points = vtkPoints()
i = 0
while i < 100000:
    points.InsertPoint(i,math.Random(0,1),math.Random(0,1),math.Random(0,1))
    i = i + 1

profile = vtkPolyData()
profile.SetPoints(points)

# Checkerboard
cbdSplatter = vtkCheckerboardSplatter()
cbdSplatter.SetInputData(profile)
cbdSplatter.SetSampleDimensions(100, 100, 100)
cbdSplatter.ScalarWarpingOff()
cbdSplatter.SetFootprint(2)
cbdSplatter.SetParallelSplatCrossover(2)
#cbdSplatter.SetRadius(0.05)

cbdSurface = vtkMarchingContourFilter()
cbdSurface.SetInputConnection(cbdSplatter.GetOutputPort())
cbdSurface.SetValue(0, 0.01)

cbdMapper = vtkPolyDataMapper()
cbdMapper.SetInputConnection(cbdSurface.GetOutputPort())
cbdMapper.ScalarVisibilityOff()

cbdActor = vtkActor()
cbdActor.SetMapper(cbdMapper)
cbdActor.GetProperty().SetColor(1.0, 0.0, 0.0)

timer = vtkExecutionTimer()
timer.SetFilter(cbdSplatter)
cbdSplatter.Update()
CBDwallClock = timer.GetElapsedWallClockTime()
#print ("CBDSplat:", CBDwallClock)

# Graphics stuff
#
ren = vtkRenderer()
renWin = vtkRenderWindow()
renWin.AddRenderer(ren)

camera = vtkCamera()
camera.SetFocalPoint(0,0,0)
camera.SetPosition(1,1,1)
ren.SetActiveCamera(camera)

# Add the actors to the renderer, set the background and size
#
ren.AddActor(cbdActor)
ren.SetBackground(1, 1, 1)
renWin.SetSize(400, 400)
ren.ResetCamera()

# render and interact with data
iRen = vtkRenderWindowInteractor()
iRen.SetRenderWindow(renWin);
renWin.Render()

#iRen.Start()

# prevent the tk window from showing up then start the event loop
# --- end of script --