用C#语言编写vtk获取鼠标光标处的三维空间坐标xyz
时间: 2024-02-13 19:01:45 浏览: 107
c#获取鼠标坐标
在C#语言中,可以使用VTK的C#封装库(vtkDotNet)来实现获取鼠标光标处的三维空间坐标xyz。具体实现代码如下:
```csharp
// 创建vtkRenderWindow和vtkRenderer
vtkRenderWindow renderWindow = vtkRenderWindow.New();
vtkRenderer renderer = vtkRenderer.New();
renderWindow.AddRenderer(renderer);
// 创建vtkRenderWindowInteractor并设置事件处理程序
vtkRenderWindowInteractor interactor = vtkRenderWindowInteractor.New();
interactor.SetRenderWindow(renderWindow);
// 获取鼠标事件的屏幕坐标,并将其转换为视图坐标
void MouseMoveCallback(vtkObject caller, vtkObjectEventArgs e)
{
vtkRenderWindowInteractor interactor = (vtkRenderWindowInteractor)caller;
int[] screenPos = interactor.GetEventPosition();
double[] viewPos = new double[3];
vtkRenderWindow renderWindow = interactor.GetRenderWindow();
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
renderer.SetDisplayPoint(screenPos[0], screenPos[1], 0.0);
renderer.DisplayToWorld();
renderer.GetWorldPoint(viewPos);
Console.WriteLine("x: {0}, y: {1}, z: {2}", viewPos[0], viewPos[1], viewPos[2]);
}
interactor.MouseMoveEvt += MouseMoveCallback;
// 开始交互
interactor.Initialize();
renderWindow.Render();
interactor.Start();
```
在上面的代码中,MouseMoveCallback()方法在鼠标移动事件发生时被调用,它首先使用vtkRenderWindowInteractor类的GetEventPosition()方法获取鼠标事件的屏幕坐标(screenPos),然后使用vtkRenderWindow和vtkRenderer将屏幕坐标转换为视图坐标(viewPos),最后打印出视图坐标的xyz值。
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