使用vtk提取模型边线（转）

用到主要vtk类有vtkSTLReader，读取stl模型文件，vtkAppendPolyData，合并读取的stl文件，vtkFeatureEdges，提取模型边线。
相关代码如下：
#include “stdafx.h”
#include
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkRenderingFreeType)
VTK_MODULE_INIT(vtkInteractionStyle)
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

int main()
{
//读取stl文件
vtkSmartPointer stlreader1 = vtkSmartPointer::New();
stlreader1->SetFileName(“D:\moxing\a12.stl”);//设置stl文件路径
//stlreader1->SetMerging(1);
stlreader1->Update();

vtkSmartPointer stlreader2 = vtkSmartPointer::New();
stlreader2->SetFileName("D:\\moxing\\a13.stl");
//stlreader2->SetMerging(1);
stlreader2->Update();

vtkSmartPointer stlreader3 = vtkSmartPointer::New();
stlreader3->SetFileName("D:\\moxing\\a14.stl");
//stlreader3->SetMerging(1);
stlreader3->Update();

vtkSmartPointer stlreader4 = vtkSmartPointer::New();
stlreader4->SetFileName("D:\\moxing\\a15.stl");
stlreader4->SetMerging(1);
stlreader4->Update();

vtkSmartPointer stlreader5 = vtkSmartPointer::New();
stlreader5->SetFileName("D:\\moxing\\a16.stl");
stlreader5->SetMerging(1);
stlreader5->Update();

vtkSmartPointer stlreader6 = vtkSmartPointer::New();
stlreader6->SetFileName("D:\\moxing\\a17.stl");
stlreader6->SetMerging(1);
stlreader6->Update();

 //合并读取的stl文件
vtkSmartPointer appendfilter = vtkSmartPointer::New();
appendfilter->AddInputData(stlreader1->GetOutput());
appendfilter->AddInputData(stlreader2->GetOutput());
appendfilter->AddInputData(stlreader3->GetOutput());
appendfilter->AddInputData(stlreader4->GetOutput());
appendfilter->AddInputData(stlreader5->GetOutput());
appendfilter->AddInputData(stlreader6->GetOutput());

appendfilter->Update();

//提取模型边线
vtkSmartPointer featureedges = vtkSmartPointer::New();
featureedges->SetInputConnection(appendfilter->GetOutputPort());
featureedges->Update();

vtkSmartPointer appendfiltermapper = vtkSmartPointer::New();
appendfiltermapper->SetInputConnection(appendfilter->GetOutputPort());
appendfiltermapper->SetScalarVisibility(0);

vtkSmartPointer featureedgesmapper = vtkSmartPointer::New();
featureedgesmapper->SetInputConnection(featureedges->GetOutputPort());
featureedgesmapper->SetScalarVisibility(0);

vtkSmartPointer appendfilteractor = vtkSmartPointer::New();
appendfilteractor->SetMapper(appendfiltermapper);
appendfilteractor->GetProperty()->SetColor(0,1,1);

vtkSmartPointer featureedgesactor = vtkSmartPointer::New();
featureedgesactor->SetMapper(featureedgesmapper);
featureedgesactor->GetProperty()->SetColor(1.0,0,1.0);
featureedgesactor->GetProperty()->SetLineWidth(2);

vtkSmartPointer ren1 = vtkSmartPointer::New();
ren1->AddActor(appendfilteractor);
ren1->SetViewport(0,0.0,0.5,1);
ren1->SetBackground(1,1,1);
ren1->ResetCamera();

vtkSmartPointer ren2 = vtkSmartPointer::New();
ren2->AddActor(featureedgesactor);
ren2->SetBackground(1, 1, 1);
ren2->SetViewport(0.5,0.0, 1.0, 1);

vtkSmartPointer renwin = vtkSmartPointer::New();
renwin->AddRenderer(ren1);
renwin->AddRenderer(ren2);

vtkSmartPointer renderWindowInteractor =
	vtkSmartPointer::New();
renderWindowInteractor->SetRenderWindow(renwin);

vtkSmartPointer style =
	vtkSmartPointer::New();
renderWindowInteractor->SetInteractorStyle(style);

renderWindowInteractor->Initialize();
renderWindowInteractor->Start();

return 0;

 最综效果：

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原文链接：https://blog.csdn.net/muye2356/article/details/113097609