所以我试图使用vtk渲染2D网格(在python中)。我有一份清单 包含所有点的元组以及包含该元组的元组列表 每个细胞的点。只是为了实验,我试图创建一个polydata对象 一个有4个元素的正方形并渲染它,但我最终得到了这个:
我希望它显示连接节点的线条(如线框) 而不是实心方形.. 这是生成上图的代码:
def main2():
#Array of vectors containing the coordinates of each point
nodes = np.array([[0, 0, 0], [1, 0, 0], [2, 0, 0], [2, 1, 0], [2, 2, 0],
[1, 2, 0], [0, 2, 0], [0, 1, 0], [1, 1, 0]])
#Array of tuples containing the nodes correspondent of each element
elements = np.array([(0, 1, 8, 7), (7, 8, 5, 6), (1, 2, 3, 8), (8, 3, 4,
5)])
#Make the building blocks of polyData attributes
Mesh = vtk.vtkPolyData()
Points = vtk.vtkPoints()
Cells = vtk.vtkCellArray()
#Load the point and cell's attributes
for i in range(len(nodes)):
Points.InsertPoint(i, nodes[i])
for i in range(len(elements)):
Cells.InsertNextCell(mkVtkIdList(elements[i]))
#Assign pieces to vtkPolyData
Mesh.SetPoints(Points)
Mesh.SetPolys(Cells)
#Mapping the whole thing
MeshMapper = vtk.vtkPolyDataMapper()
if vtk.VTK_MAJOR_VERSION <= 5:
MeshMapper.SetInput(Mesh)
else:
MeshMapper.SetInputData(Mesh)
#Create an actor
MeshActor = vtk.vtkActor()
MeshActor.SetMapper(MeshMapper)
#Rendering Stuff
camera = vtk.vtkCamera()
camera.SetPosition(1,1,1)
camera.SetFocalPoint(0,0,0)
renderer = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(renderer)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
renderer.AddActor(MeshActor)
renderer.SetActiveCamera(camera)
renderer.ResetCamera()
renderer.SetBackground(1,1,1)
renWin.SetSize(300,300)
#Interact with data
renWin.Render()
iren.Start()
main2()
我还想知道是否可以使用网格线 渲染窗口的背景,而不是黑色,就像这样:
提前致谢!
答案 0 :(得分:1)
您可以使用MeshActor.GetProperty()。SetRepresentationToWireframe()(https://www.vtk.org/doc/nightly/html/classvtkProperty.html#a2a4bdf2f46dc499ead4011024eddde5c)将actor渲染为线框,或者使用MeshActor.GetProperty()。SetEdgeVisibility(True)将其渲染为实体,边缘渲染为线条
关于渲染窗口背景,我不知道。
答案 1 :(得分:0)
感谢@MafiaSkafia,我创建了我正在寻找的东西,用于 3D 目的的 2D 网格,也许有人也会寻找这样的东西。
// Start import required js
import './node_modules/jquery/dist/jquery';
import './node_modules/bootstrap/dist/js/bootstrap.bundle';
import './node_modules/owl.carousel/dist/owl.carousel';
// End import required js
// Start import required css
import './node_modules/bootstrap/dist/css/bootstrap.min.css';
import './node_modules/owl.carousel/dist/assets/owl.carousel.min.css';
import './node_modules/owl.carousel/dist/assets/owl.theme.default.css';
// End import required css