1、VTK+QT + cmake编程 三维圆柱体

效果图

一、VTK环境变量设置

添加VTK用户变量，添加完之后重启电脑让环境变量生效

变量：VTK_DIR

值：VTK所在目录

作用为了让cmake能够找到VTK

二、QT Creator 5.12.9新建cmake项目

QT新建项目，选择Qt Widget Application，默认Buid System是qmake

这里我们改为CMake

三、修改CMakeLists.txt文件引入VTK库

按红框添加，作用是查找VTK，和链接VTK库

链接VTK库的时候，会自动引入VTK头文件

cmake_minimum_required(VERSION 3.5) project(untitled LANGUAGES CXX) set(CMAKE_INCLUDE_CURRENT_DIR ON) set(CMAKE_AUTOUIC ON) set(CMAKE_AUTOMOC ON) set(CMAKE_AUTORCC ON) set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) # QtCreator supports the following variables for Android, which are identical to qmake Android variables. # Check http://doc.qt.io/qt-5/deployment-android.html for more information. # They need to be set before the find_package(Qt5 ...) call. #if(ANDROID) # set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android") # if (ANDROID_ABI STREQUAL "armeabi-v7a") # set(ANDROID_EXTRA_LIBS # ${CMAKE_CURRENT_SOURCE_DIR}/path/to/libcrypto.so # ${CMAKE_CURRENT_SOURCE_DIR}/path/to/libssl.so) # endif() #endif() find_package(Qt5 COMPONENTS Widgets REQUIRED) find_package(VTK REQUIRED) if(ANDROID) add_library(untitled SHARED main.cpp MainWindow.cpp MainWindow.h MainWindow.ui ) else() add_executable(untitled main.cpp MainWindow.cpp MainWindow.h MainWindow.ui ) endif() target_link_libraries(untitled PRIVATE Qt5::Widgets ${VTK_LIBRARIES})

四、写一个最简单的圆柱体VTKDemo

main.cpp

#include "MainWindow.h" #include <QApplication> #include <QVTKOpenGLNativeWidget.h> #include <vtkSmartPointer.h> #include <vtkCylinderSource.h> #include <vtkActor.h> #include <vtkPolyDataMapper.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkProperty.h> int main(int argc, char *argv[]) { QApplication a(argc, argv); // MainWindow w; // w.show(); auto wd = new QVTKOpenGLNativeWidget(); auto cylinder = vtkSmartPointer<vtkCylinderSource>::New(); cylinder->SetRadius(3); cylinder->SetHeight(5); cylinder->SetResolution(50); // 分辨率 auto mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(cylinder->GetOutputPort()); auto actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetColor(0.9, 0.3, 0); // 红色 auto render = vtkSmartPointer<vtkRenderer>::New(); render->AddActor(actor); render->SetBackground(0, 0.2, 0.8); // 蓝色 wd->renderWindow()->AddRenderer(render); wd->show(); return a.exec(); }