虽然用vtk绘制坐标轴有点大才小用，但vtk绘制出来到坐标轴着实挺清秀的：
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#include “mainwindow.h”
#include “QApplication”
include “vtkAutoInit.h”
if VTK_MAJOR_VERSION >=7
VTK_MODULE_INIT(vtkRenderingOpenGL2)
VTK_MODULE_INIT(vtkInteractionStyle)
VTK_MODULE_INIT(vtkRenderingFreeType)
VTK_MODULE_INIT(vtkRenderingContextOpenGL2)
endif
include “vtkVersion.h”
include “vtkSmartPointer.h”
include “vtkChartXY.h”
include “vtkContextScene.h”
include “vtkContextView.h”
include “vtkFloatArray.h”
include “vtkPlotPoints.h”
include “vtkRenderWindow.h”
include “vtkRenderWindowInteractor.h”
include “vtkRenderer.h”
include “vtkTable.h”
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// MainWindow w;
// w.show();
// return a.exec();
// Set up a 2D scene, add an XY chart to it
vtkSmartPointer<vtkContextView> view =
vtkSmartPointer<vtkContextView>::New();
view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
view->GetRenderWindow()->SetSize(400, 300);
vtkSmartPointer<vtkChartXY> chart =
vtkSmartPointer<vtkChartXY>::New();
view->GetScene()->AddItem(chart);
chart->SetShowLegend(true);
// Create a table with some points in it...
vtkSmartPointer<vtkTable> table =
vtkSmartPointer<vtkTable>::New();
vtkSmartPointer<vtkFloatArray> arrX =
vtkSmartPointer<vtkFloatArray>::New();
arrX->SetName("X Axis");
table->AddColumn(arrX);
vtkSmartPointer<vtkFloatArray> arrC =
vtkSmartPointer<vtkFloatArray>::New();
arrC->SetName("Cosine");
table->AddColumn(arrC);
vtkSmartPointer<vtkFloatArray> arrS =
vtkSmartPointer<vtkFloatArray>::New();
arrS->SetName("Sine");
table->AddColumn(arrS);
vtkSmartPointer<vtkFloatArray> arrT =
vtkSmartPointer<vtkFloatArray>::New();
arrT->SetName("Sine - Cosine");
table->AddColumn(arrT);
// Test charting with a few more points...
int numPoints = 40;
float inc = 7.5 / (numPoints-1);
table->SetNumberOfRows(numPoints);
for (int i = 0; i < numPoints; ++i)
{
table->SetValue(i, 0, i * inc);
table->SetValue(i, 1, cos(i * inc) + 0.0);
table->SetValue(i, 2, sin(i * inc) + 0.0);
table->SetValue(i, 3, sin(i * inc) - cos(i * inc));
}
// Add multiple scatter plots, setting the colors etc
vtkPlot *points = chart->AddPlot(vtkChart::POINTS);
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#if VTK_MAJOR_VERSION <= 5
points->SetInput(table, 0, 1);
#else
points->SetInputData(table, 0, 1);
#endif
points->SetColor(0, 0, 0, 255);
points->SetWidth(1.0);
vtkPlotPoints::SafeDownCast(points)->SetMarkerStyle(vtkPlotPoints::CROSS);
points = chart->AddPlot(vtkChart::POINTS);
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#if VTK_MAJOR_VERSION <= 5
points->SetInput(table, 0, 2);
#else
points->SetInputData(table, 0, 2);
#endif
points->SetColor(0, 0, 0, 255);
points->SetWidth(1.0);
vtkPlotPoints::SafeDownCast(points)->SetMarkerStyle(vtkPlotPoints::PLUS);
points = chart->AddPlot(vtkChart::POINTS);
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#if VTK_MAJOR_VERSION <= 5
points->SetInput(table, 0, 3);
#else
points->SetInputData(table, 0, 3);
#endif
points->SetColor(0, 0, 255, 255);
points->SetWidth(1.0);
vtkPlotPoints::SafeDownCast(points)->SetMarkerStyle(vtkPlotPoints::CIRCLE);
//Finally render the scene
view->GetRenderWindow()->SetMultiSamples(0);
view->GetInteractor()->Initialize();
view->GetInteractor()->Start();
return EXIT_SUCCESS;
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}
sleep;gnome-screenshot截图：