1. 前言

在一个项目中，需要用鼠标和键盘完成对模型旋转操作和移动操作。
实现中，对鼠标的操作虚函数进行了重写，完成左右键点击，对模型正负方向旋转。

2.代码

#include "InitInclude.h"
#include "CreateSphere.h"
#include "thr.h"
#include "2D.h"
#include "2DplatformTexture.h"
#include "3DGammaKnife.h"
#include "2D(nei_qianghou).h"
#include "MouseInteractorHighLightActor.h"
#include "MouseInter.h"
#include "duobianxing.h"
#include "duobianxingzhuose(shiyongqianghoudiban).h"
#include "MouseInteractorStyle6 .h"
#include "testAdd.h"
#include <vtkImageImport.h>
#include <vtkImageActor.h>
#include <vtkInteractorStyleImage.h>
#include <vtkInteractorStyleUser.h>
#include <vtkObjectFactory.h>
#include "my3DCameraStyle.h"
#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCylinderSource.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include "MouseInteractorStyle2.h"
#include "MouseIntr922.h"
#include <vtkInteractorStyleTrackballActor.h>//另一种交互方式，操纵演员
#include <vtkInteractorStyleTrackballCamera.h>
// Handle mouse events
class MouseInteractorHighLightActor222 : public vtkInteractorStyleTrackballCamera
{
public:static MouseInteractorHighLightActor222* New();vtkTypeMacro(MouseInteractorHighLightActor222, vtkInteractorStyleTrackballCamera);MouseInteractorHighLightActor222(){m_RotateZStep = 0.0;LastPickedActor = NULL;LastPickedProperty = vtkProperty::New();}virtual ~MouseInteractorHighLightActor222(){LastPickedProperty->Delete();}//左键按下执行以下操作virtual void OnLeftButtonDown(){ this->LastPickedActor = tActor;if (this->LastPickedActor){// Save the property of the picked actor so that we can// restore it next timethis->LastPickedProperty->DeepCopy(this->LastPickedActor->GetProperty());// Highlight the picked actor by changing its propertiesm_RotateZStep += 10.05;this->LastPickedActor->RotateZ(m_RotateZStep);}// Forward eventsvtkInteractorStyleTrackballCamera::OnLeftButtonDown();}//右键按下执行以下操作virtual void OnRightButtonDown(){this->LastPickedActor = tActor;if (this->LastPickedActor){// Save the property of the picked actor so that we can// restore it next timethis->LastPickedProperty->DeepCopy(this->LastPickedActor->GetProperty());// Highlight the picked actor by changing its propertiesm_RotateZStep += 10.05;this->LastPickedActor->RotateZ(m_RotateZStep);}// Forward eventsvtkInteractorStyleTrackballCamera::OnRightButtonDown();}virtual void OnChar(){this->LastPickedActor = tActor;switch (this->Interactor->GetKeyCode()){case VK_SPACE:{//if (this->LastPickedActor){// Save the property of the picked actor so that we can// restore it next timethis->LastPickedProperty->DeepCopy(this->LastPickedActor->GetProperty());// Highlight the picked actor by changing its propertiesm_RotateZStep += 10.05;this->LastPickedActor->RotateZ(m_RotateZStep);}cout << "sssssss38up " << endl;break;}case 26:{cout << "wertyuio " << endl;break;}}//vtkInteractorStyleTrackballCamera::OnRightButtonDown();}vtkActor    *tActor;double m_RotateZStep;
private:vtkActor    *LastPickedActor;vtkProperty *LastPickedProperty;
};vtkStandardNewMacro(MouseInteractorHighLightActor222);int main(int, char *[])
{ // This creates a polygonal cylinder model with eight circumferential facets// (i.e, in practice an octagonal prism).vtkNew<vtkCylinderSource> cylinder;cylinder->SetResolution(8);// The mapper is responsible for pushing the geometry into the graphics// library. It may also do color mapping, if scalars or other attributes are// defined.vtkSmartPointer<vtkPolyDataMapper> cylinderMapper = vtkSmartPointer<vtkPolyDataMapper>::New();cylinderMapper->SetInputConnection(cylinder->GetOutputPort());// The actor is a grouping mechanism: besides the geometry (mapper), it// also has a property, transformation matrix, and/or texture map.// Here we set its color and rotate it around the X and Y axes.vtkSmartPointer<vtkActor> cylinderActor = vtkSmartPointer<vtkActor>::New();{cylinderActor->SetMapper(cylinderMapper);cylinderActor->RotateX(0);cylinderActor->RotateY(-0);cylinderActor->RotateZ(-0.0);cylinderActor->SetOrigin(0, 0, 0); }//vtkSmartPointer<vtkActor> cylinderActor1 = vtkSmartPointer<vtkActor>::New();//{//  cylinderActor1->SetMapper(cylinderMapper); //  double xx = 20;//     cylinderActor1->RotateX(xx);//  cylinderActor1->RotateY(-120.0);//  cylinderActor1->RotateZ(-40.0);//  cylinderActor1->SetOrigin(1, 1, 1);//} vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();//vtkSmartPointer<MouseInteractorStyle2> StyleActor = vtkSmartPointer<MouseInteractorStyle2>::New();vtkSmartPointer<MouseInteractorHighLightActor222> style = vtkSmartPointer<MouseInteractorHighLightActor222>::New();style->SetDefaultRenderer(renderer);style->tActor = cylinderActor;renderWindowInteractor->SetInteractorStyle(style);//style->SetActor(cylinderActor);//renderWindowInteractor->SetInteractorStyle(style);//StyleActor->SetDefaultRenderer(renderer);//StyleActor->ActorA = cylinderActor;//StyleActor->ActorB = cylinderActor1;//renderWindowInteractor->SetInteractorStyle(StyleActor);// The renderer generates the image// which is then displayed on the render window.// It can be thought of as a scene to which the actor is added renderer->AddActor(cylinderActor);//renderer->AddActor(cylinderActor1);// Zoom in a little by accessing the camera and invoking its "Zoom" method.renderer->ResetCamera();renderer->GetActiveCamera()->Zoom(1.5);// The render window is the actual GUI window// that appears on the computer screenvtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();renderWindow->SetSize(900, 900);renderWindow->AddRenderer(renderer);renderWindow->SetWindowName("Cylinder");// The render window interactor captures mouse events// and will perform appropriate camera or actor manipulation// depending on the nature of the events.renderWindowInteractor->SetRenderWindow(renderWindow);// This starts the event loop and as a side effect causes an initial render.renderWindow->Render();renderWindowInteractor->Start();
}

3.效果

https://www.bilibili.com/video/BV1Wq4y1o7KN/

鼠标和VTK模型交互，通过左右键实现对模型的两个方向旋转