vtk 鼠标拖拽 画出立方体
时间: 2023-08-10 09:01:05 浏览: 113
使用VTK(Visualization Toolkit)库绘制一个立方体,并实现鼠标拖拽功能的主要步骤如下:
1. 导入VTK库和相关头文件:
```C++
#include <vtkSmartPointer.h>
#include <vtkCubeSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
```
2. 创建立方体数据源:
```C++
vtkSmartPointer<vtkCubeSource> cubeSource = vtkSmartPointer<vtkCubeSource>::New();
```
3. 创建数据映射器:
```C++
vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(cubeSource->GetOutputPort());
```
4. 创建绘制对象(立方体的Actor):
```C++
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
```
5. 创建渲染器和窗口:
```C++
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(actor);
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
```
6. 创建交互器,并添加窗口对象:
```C++
vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
```
7. 配置交互器,使其支持鼠标拖拽操作:
```C++
vtkSmartPointer<vtkInteractorStyleTrackballCamera> style = vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
interactor->SetInteractorStyle(style);
```
8. 启动渲染和交互过程:
```C++
renderWindow->Render();
interactor->Start();
```
以上便是使用VTK库实现鼠标拖拽绘制立方体的基本步骤。通过调用相应的函数,可以修改立方体的属性,如大小、颜色等,以实现个性化的立方体绘制效果。