程序示例精选
C++VTK鼠标框选局部删除三维网格
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前言

这篇博客针对《C++VTK鼠标框选局部删除三维网格》编写代码，代码整洁，规则，易读。 学习与应用推荐首选。

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文章目录

一、所需工具软件
二、使用步骤
       1. 主要代码
       2. 运行结果
三、在线协助

一、所需工具软件

       1. Visual Studio
       2. VTK

二、使用步骤

代码如下（示例）：

#include <vtkSmartPointer.h>
#include <vtkPointData.h>
#include <vtkIdTypeArray.h>
#include <vtkDataSetSurfaceFilter.h>
#include <vtkRendererCollection.h>
#include <vtkProperty.h>
#include <vtkPlanes.h>
#include <vtkObjectFactory.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkPointSource.h>
#include <vtkInteractorStyleRubberBandPick.h>
#include <vtkAreaPicker.h>
#include <vtkExtractGeometry.h>


vtkSmartPointer<vtkPolyData> GetStlPolyData()
{
	vtkSmartPointer<vtkSTLReader> reader1 = vtkSmartPointer<vtkSTLReader>::New();

	// Read a stl file.
	reader1->SetFileName("customer_model_1.stl");
	reader1->Update();

	vtkSmartPointer<vtkIdFilter> idFilter =
		vtkSmartPointer<vtkIdFilter>::New();
	idFilter->SetInputConnection(reader1->GetOutputPort());
	//idFilter->SetIdsArrayName("OriginalIds");
	idFilter->Update();

	vtkSmartPointer<vtkDataSetSurfaceFilter> surfaceFilter =
		vtkSmartPointer<vtkDataSetSurfaceFilter>::New();
	surfaceFilter->SetInputConnection(idFilter->GetOutputPort());
	surfaceFilter->Update();

	vtkPolyData* input = surfaceFilter->GetOutput();

	vtkSmartPointer<vtkPolyData> data = vtkSmartPointer<vtkPolyData>::New();
	data->DeepCopy(input);

	return data;

}


int main(int, char* [])
{
	auto input = GetStlPolyData();

	// Create a mapper and actor
	vtkSmartPointer<vtkPolyDataMapper> mapper =
		vtkSmartPointer<vtkPolyDataMapper>::New();
	mapper->SetInputData(input);
	mapper->ScalarVisibilityOff();

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

	//actor->SetScale(1.0);

	// Visualize
	vtkSmartPointer<vtkRenderer> renderer =
		vtkSmartPointer<vtkRenderer>::New();
	vtkSmartPointer<vtkRenderWindow> renderWindow =
		vtkSmartPointer<vtkRenderWindow>::New();
	renderWindow->AddRenderer(renderer);

	vtkSmartPointer<vtkAreaPicker> areaPicker =
		vtkSmartPointer<vtkAreaPicker>::New();
	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
		vtkSmartPointer<vtkRenderWindowInteractor>::New();
	renderWindowInteractor->SetPicker(areaPicker);
	renderWindowInteractor->SetRenderWindow(renderWindow);

	renderer->AddActor(actor);
	//renderer->SetBackground(1,1,1); // Background color white

	renderWindow->Render();

	vtkSmartPointer<InteractorStyle> style =
		vtkSmartPointer<InteractorStyle>::New();
	style->SetPoints(input);
	renderWindowInteractor->SetInteractorStyle(style);


	vtkSmartPointer<vtkAxesActor> axes = vtkSmartPointer<vtkAxesActor>::New();

	//2、以Widget方式,在左下角的视口中显示坐标系，可进行鼠标交互
	vtkSmartPointer<vtkOrientationMarkerWidget> widget = vtkSmartPointer<vtkOrientationMarkerWidget>::New();
	widget->SetOutlineColor(0.9300, 0.5700, 0.1300);
	widget->SetOrientationMarker(axes);
	widget->SetInteractor(renderWindowInteractor);
	//SETVIEWPORT的作用是显示WIDGET到窗口的某个位置
	//widget->SetViewport(0.0, 0.0, 0.4, 0.4);
	widget->SetEnabled(1);
	widget->InteractiveOn();



	renderWindowInteractor->Start();

	return EXIT_SUCCESS;
}
#endif // 1

运行结果

三、在线协助：

如需安装运行环境或远程调试，见文章底部个人 QQ 名片，由专业技术人员远程协助！

1）远程安装运行环境，代码调试
2）Visual Studio, Qt, C++, Python编程语言入门指导
3）界面美化
4）软件制作
5）云服务器申请
6）网站制作

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