VTK图形图像开发进阶-学习笔记 02 VTK的基本概念

最新推荐文章于 2025-11-09 05:41:48 发布

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最新推荐文章于 2025-11-09 05:41:48 发布 · 1.7k 阅读

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#可视化 #vtk

本文详细介绍了VTK（Visualization Toolkit）中的关键组件及其在三维渲染和数据可视化中的应用。从Cylinder的渲染开始，深入讲解了VTK管线的工作流程，包括数据源、映射器、Actor、渲染器、渲染窗口和交互器的概念与使用。同时，探讨了灯光、相机、坐标系统和空间变换等三维场景基本要素。

2.1 一个稍微复杂的VTK程序

创建VTK程序的步骤可以参考上一篇，这里直接列出CMakeLists.txt 和2.1_RenderCylinder.cpp内容

CMakeLists.txt

CMAKE_MINIMUM_REQUIRED(VERSION 3.13.4)
PROJECT(Chap02)
FIND_PACKAGE(VTK REQUIRED)
INCLUDE(${VTK_USE_FILE})
ADD_EXECUTABLE(2.1_RenderCylinder 2.1_RenderCylinder.cpp)
TARGET_LINK_LIBRARIES(2.1_RenderCylinder ${VTK_LIBRARIES} )

2.1_RenderCylinder.cpp

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

int main(){
	vtkSmartPointer<vtkCylinderSource> cyLinder=
	 vtkSmartPointer<vtkCylinderSource>::New();
	 cyLinder->SetHeight(3.0);
	 cyLinder->SetRadius(1.0);
	 cyLinder->SetResolution(10);
	 
	 vtkSmartPointer<vtkPolyDataMapper> cyLinderMapper=
	  vtkSmartPointer<vtkPolyDataMapper>::New();
	  cyLinderMapper->SetInputConnection(cyLinder->GetOutputPort());
	  
	  vtkSmartPointer<vtkActor> cyLinderActor=
	  vtkSmartPointer<vtkActor>::New();
	  cyLinderActor->SetMapper(cyLinderMapper);
	  
	  vtkSmartPointer<vtkRenderer> renderer=
	  vtkSmartPointer<vtkRenderer>::New();
	  //renderer->AddActor(cyLinderActor);
	  renderer->SetBackground(0.1,0.2,0.4);
	    
	  vtkSmartPointer<vtkRenderWindow> renWin=
	  vtkSmartPointer<vtkRenderWindow>::New();
	  renWin->AddRenderer(renderer);
	  renWin->SetSize(300,300);
	  
	  vtkSmartPointer<vtkRenderWindowInteractor> iren=
	  vtkSmartPointer<vtkRenderWindowInteractor>::New();
	  iren->SetRenderWindow(renWin);
	
	vtkSmartPointer<vtkInteractorStyleTrackballCamera> style=
	vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
	iren->SetInteractorStyle(style);
	
	iren->Initialize();
	iren->Start();
	
	return 0;
	
}

运行效果：