我找到了一種方法來做到這一點vtkPolyMapper2D
這似乎工作正常。這似乎是一個非常愚蠢的做法。如果有更優雅的東西,我全是耳朵。
import vtk
extents = [[0,0],[620,0],[620,220],[0,220]]
polyPoints = vtk.vtkPoints()
for x, y in extents:
polyPoints.InsertNextPoint(x, y, 0)
num_corners = len(extents)
polyCells = vtk.vtkCellArray()
polyCells.InsertNextCell(num_corners + 1)
for i in range(0, num_corners):
polyCells.InsertCellPoint(i)
polyCells.InsertCellPoint(0) ## Rejoin at the end
poly_profile = vtk.vtkPolyData()
poly_profile.SetPoints(polyPoints)
poly_profile.SetPolys(polyCells) ## Goes solid
cut_triangles = vtk.vtkTriangleFilter()
cut_triangles.SetInput(poly_profile)
_poly_mapper = vtk.vtkPolyDataMapper2D()
_poly_mapper.SetInput(poly_profile)
_poly_mapper.SetInputConnection(cut_triangles.GetOutputPort())
_actor = vtk.vtkActor2D()
_actor.SetMapper(_poly_mapper)
_actor.GetProperty().SetColor([0.1,0.1,0.1])
_actor.GetProperty().SetOpacity(0.5)
#Add to renderer as normal
你可能包括一個小例子解釋如何去完成這個? – EWit