纹理映射示例Chap02.2

书章节2.2.4纹理映射

把上一节代码稍微修改，加载一个平面和图片，就可以实现简单纹理映射。

2.2_TextureExample.cpp如下

//VTK INIT With Opengl2
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle)

#include <vtkRenderWindow.h>
#include <vtkSmartPointer.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkCylinderSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkJPEGReader.h>
#include <vtkTexture.h>
#include <vtkPlaneSource.h>

int main()
{
    vtkSmartPointer<vtkJPEGReader> reader = vtkSmartPointer<vtkJPEGReader>::New();
    reader->SetFileName("..\\texture.jpg");

    vtkSmartPointer<vtkTexture> texture = vtkSmartPointer<vtkTexture>::New();
    texture->SetInputConnection(reader->GetOutputPort());
    texture->InterpolateOn();

    vtkSmartPointer<vtkPlaneSource> plane = vtkSmartPointer<vtkPlaneSource>::New();

    vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    mapper->SetInputConnection(plane->GetOutputPort());

    vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
    actor->SetMapper(mapper);
    actor->SetTexture(texture);

    vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
    renderer->AddActor(actor);
    //renderer->SetBackground(0.1, 0.2, 0.4);

    vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
    renWin->AddRenderer(renderer);
    renWin->SetSize(500, 500);
    renWin->SetWindowName("Cylinder");

    vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
    iren->SetRenderWindow(renWin);

    vtkSmartPointer<vtkInteractorStyleTrackballCamera> style = vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
    iren->SetInteractorStyle(style);
    
    renWin->Render();
    iren->Initialize();
    iren->Start();

    return 0;
}

图片放在cpp同级目录

• Chap02
• • 2.2_TextureExample.cpp
• • texture.jpg
• • build
• • • Chap02.sln

运行效果