VTK初学一，b_PolyVertex多个图形点的绘制-白红宇

VTK初学一，b_PolyVertex多个图形点的绘制

阅读量：5011 次

发布时间：2019-06-12

本文共 3300 字，大约阅读时间需要 11 分钟。

#ifndef INITIAL_OPENGL

#define INITIAL_OPENGL

#include

VTK_MODULE_INIT(vtkRenderingOpenGL)

VTK_MODULE_INIT(vtkInteractionStyle)

#endif

#include

using namespace std;

#include "vtkPolyDataMapper.h"

#include "vtkWin32OpenGLRenderWindow.h"

#include "vtkRenderWindow.h"

#include "vtkRenderWindowInteractor.h"

#include "vtkRenderer.h"

#include "vtkPoints.h"

#include "vtkWin32RenderWindowInteractor.h"

#include "vtkProperty.h"

#include "vtkFloatArray.h"

#include "vtkPolyData.h"

#include "vtkDataSetMapper.h"

#include "vtkActor2D.h"

#include "vtkContourFilter.h"

#include "vtkContourValues.h"

#include "vtkUnstructuredGrid.h"

#include "vtkPointData.h"

#include "vtkVertex.h"

#include "vtkPolyVertex.h"

#include "vtkInteractorStyleTrackballCamera.h"

void myShow(vtkSmartPointer
    
      aGrid);

int main()

//几何数据

vtkSmartPointer
    
      points=vtkSmartPointer
     
      ::New();

//    points->SetNumberOfPoints(5);//此行可有可无

points->InsertPoint(0,0,0,0);

points->InsertPoint(1,0.5,0.5,0);

points->InsertPoint(2,-0.3,-0.2,0);

points->InsertPoint(3,0.8,-0.5,0);

points->InsertPoint(4,1,0.5,0.3);

//拓扑数据

vtkSmartPointer
    
     polyVertex=vtkSmartPointer
     
      ::New();

polyVertex->GetPointIds()->SetNumberOfIds(5);//必须设置Id个数，否则可以编译，不能运行

polyVertex->GetPointIds()->SetId(0,0);//第一个参数是几何point的ID号，第2个参数是拓扑中的Id号

polyVertex->GetPointIds()->SetId(1,1);

polyVertex->GetPointIds()->SetId(2,2);

polyVertex->GetPointIds()->SetId(3,3);

polyVertex->GetPointIds()->SetId(4,4);

//属性数据

vtkSmartPointer
    
     pointsScalars=vtkSmartPointer
     
      ::New();

pointsScalars->SetNumberOfTuples(5);//此行可有可无

pointsScalars->InsertValue(0,0);//第1个参数是points点的Id，第2个参数是该点的属性值

pointsScalars->InsertValue(1,0);//第1个参数是points点的Id，第2个参数是该点的属性值

pointsScalars->InsertValue(2,0);//第1个参数是points点的Id，第2个参数是该点的属性值

pointsScalars->InsertValue(3,0);//第1个参数是points点的Id，第2个参数是该点的属性值

pointsScalars->InsertValue(4,0);//第1个参数是points点的Id，第2个参数是该点的属性值

//将以上三部分数据组合成一个结构vtkUnstructureGrid

vtkSmartPointer
    
      aGrid=vtkSmartPointer
     
      ::New();

aGrid->Allocate(1,1);

aGrid->SetPoints(points);

aGrid->GetPointData()->SetScalars(pointsScalars);

aGrid->InsertNextCell(polyVertex->GetCellType(),polyVertex->GetPointIds());

//在窗口中显示多个Vertex

myShow(aGrid);

return 0;

void myShow(vtkSmartPointer
    
      aGrid)

//设置映射器

vtkSmartPointer
    
      aMapper=vtkSmartPointer
     
      ::New();

aMapper->SetInputData(aGrid);

aMapper->ScalarVisibilityOn();

vtkSmartPointer
    
      anActor=vtkSmartPointer
     
      ::New();

anActor->SetMapper(aMapper);

anActor->GetProperty()->SetRepresentationToPoints();

anActor->GetProperty()->SetDiffuseColor(1,0,0);

anActor->GetProperty()->SetPointSize(10);

//创建显示窗口

vtkSmartPointer
    
      ren1=vtkSmartPointer
     
      ::New();

vtkSmartPointer
    
      renWin=vtkSmartPointer
     
      ::New();

ren1->AddActor(anActor);

renWin->AddRenderer(ren1);

vtkSmartPointer
    
      iren=vtkSmartPointer
     
      ::New();

vtkSmartPointer
    
      style=vtkSmartPointer
     
      ::New();

iren->SetInteractorStyle(style);

iren->SetRenderWindow(renWin);

renWin->SetSize(700,700);

ren1->ResetCamera();

renWin->Render();

iren->Start();

转载于:https://www.cnblogs.com/phoenixdsg/p/6116428.html

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