欢迎来到我的博客，希望这篇文章对你有所帮助，如果觉得不错，请点赞搜藏哈。

Qt&Vtk-AmbientSpheres

从本章开始，将开始搬运官方实例代码，顺便开始学习，能理解多少算多少。

1 效果展示

今天搬运第一个Vtk官方示例AmbientSpheres，如下图

2源码

下面看下源代码，这次分别写在了头文件中和源文件中。

2.1 ambientspheres.h

#ifndef AMBIENTSPHERES_H
#define AMBIENTSPHERES_H
?
#include <QWidget>
#include "QVTKOpenGLWidget.h"               //新版本，旧版QVTKWidget
#include "vtkAutoInit.h"
#include "vtkSmartPointer.h"
#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkProperty.h"
#include "vtkCamera.h"
#include "vtkLight.h"
?
namespace Ui {
class AmbientSpheres;
}
?
class AmbientSpheres : public QWidget
{
    Q_OBJECT
?
public:
    explicit AmbientSpheres(QWidget *parent = 0);
    ~AmbientSpheres();
?
private:
    Ui::AmbientSpheres *ui;
    vtkSmartPointer<vtkSphereSource> sphere = nullptr;
    vtkSmartPointer<vtkPolyDataMapper> sphereMapper = nullptr;
    vtkSmartPointer<vtkActor>   sphere1 = nullptr,
                                sphere2 = nullptr,
                                sphere3 = nullptr,
                                sphere4 = nullptr,
                                sphere5 = nullptr,
                                sphere6 = nullptr,
                                sphere7 = nullptr,
                                sphere8 = nullptr;
    vtkSmartPointer<vtkRenderer> renderer = nullptr;
    vtkSmartPointer<vtkLight> light = nullptr;
};
?
#endif // AMBIENTSPHERES_H
?
?

2.2 ambientspheres.cpp

#include "ambientspheres.h"
#include "ui_ambientspheres.h"
#include <QDebug>
/**
 * @brief AmbientSpheres::AmbientSpheres
 * @param parent
 * 照搬官方实例，有道翻译官方文件中内容如下
 * This examples demonstrates the effect of specular lighting.
 * 这个例子演示了镜面照明的效果。
 * 专业名词后面慢慢学习，代码先撸起来
 */
AmbientSpheres::AmbientSpheres(QWidget *parent) :QWidget(parent),ui(new Ui::AmbientSpheres)
{
    ui->setupUi(this);
    //创建一个球体
    sphere = vtkSmartPointer<vtkSphereSource>::New();
    sphere->SetThetaResolution(100);
    sphere->SetPhiResolution(50);
    //创建一个映射器
    sphereMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    sphereMapper->SetInputConnection(sphere->GetOutputPort());
    //创建8个小球
    sphere1 = vtkSmartPointer<vtkActor>::New();
    sphere2 = vtkSmartPointer<vtkActor>::New();
    sphere3 = vtkSmartPointer<vtkActor>::New();
    sphere4 = vtkSmartPointer<vtkActor>::New();
    sphere5 = vtkSmartPointer<vtkActor>::New();
    sphere6 = vtkSmartPointer<vtkActor>::New();
    sphere7 = vtkSmartPointer<vtkActor>::New();
    sphere8 = vtkSmartPointer<vtkActor>::New();
?
    sphere1->SetMapper(sphereMapper);
    sphere1->GetProperty()->SetColor(1,0,0);            //颜色
    sphere1->GetProperty()->SetAmbient(0.125);          //环境光系数
    sphere1->GetProperty()->SetDiffuse(0.0);            //漫反射光系数
    sphere1->GetProperty()->SetSpecular(0.0);           //镜面反射系数
                                                        //镜面系数SetSpecularPower()
?
?
    sphere2->SetMapper(sphereMapper);
    sphere2->GetProperty()->SetColor(1,0,1);
    sphere2->GetProperty()->SetAmbient(0.25);
    sphere2->GetProperty()->SetDiffuse(0.0);
    sphere2->GetProperty()->SetSpecular(0.0);
    sphere2->AddPosition(1.25,0,0);
?
?
    sphere3->SetMapper(sphereMapper);
    sphere3->GetProperty()->SetColor(1,0.1,0);