vtk创建三角形网格的温度属性

在VTK中创建三角形网格的温度属性可以通过以下步骤实现：

创建三角形网格数据集：

import vtk

# 创建三角形网格数据集
points = vtk.vtkPoints()
points.InsertNextPoint(0, 0, 0)
points.InsertNextPoint(1, 0, 0)
points.InsertNextPoint(0, 1, 0)

triangle = vtk.vtkTriangle()
triangle.GetPointIds().SetId(0, 0)
triangle.GetPointIds().SetId(1, 1)
triangle.GetPointIds().SetId(2, 2)

triangleCells = vtk.vtkCellArray()
triangleCells.InsertNextCell(triangle)

trianglePolyData = vtk.vtkPolyData()
trianglePolyData.SetPoints(points)
trianglePolyData.SetPolys(triangleCells)

创建温度属性数组：

# 创建温度属性数组
temperature = vtk.vtkFloatArray()
temperature.SetName("Temperature")
temperature.InsertNextValue(10.0)
temperature.InsertNextValue(20.0)
temperature.InsertNextValue(30.0)

trianglePolyData.GetPointData().AddArray(temperature)

可视化温度属性：

# 可视化温度属性
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputData(trianglePolyData)
mapper.SetScalarRange(temperature.GetRange())

actor = vtk.vtkActor()
actor.SetMapper(mapper)

renderer = vtk.vtkRenderer()
renderer.AddActor(actor)
renderer.ResetCamera()

window = vtk.vtkRenderWindow()
window.AddRenderer(renderer)

interactor = vtk.vtkRenderWindowInteractor()
interactor.SetRenderWindow(window)

window.Render()
interactor.Start()
``