// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen // SPDX-License-Identifier: BSD-3-Clause #include "vtkChartXY.h" #include "vtkContextScene.h" #include "vtkContextView.h" #include "vtkDoubleArray.h" #include "vtkNew.h" #include "vtkPlot.h" #include "vtkRenderWindow.h" #include "vtkRenderWindowInteractor.h" #include "vtkTable.h" //------------------------------------------------------------------------------ int TestLinePlotDouble2(int, char*[]) { // Set up a 2D scene, add an XY chart to it vtkNew view; view->GetRenderWindow()->SetSize(400, 300); vtkNew chart; view->GetScene()->AddItem(chart); // Create a table with some points in it... vtkNew table; vtkNew arrX; arrX->SetName("X"); table->AddColumn(arrX); vtkNew arrC; arrC->SetName("Cosine"); table->AddColumn(arrC); // Test charting some very small points. int numPoints = 69; float inc = 7.5 / (numPoints - 1); table->SetNumberOfRows(numPoints); for (int i = 0; i < numPoints; ++i) { double x(1 + 1e-11 * inc * i); table->SetValue(i, 0, x); table->SetValue(i, 1, cos((x - 1.0) * 1.0e11)); } vtkPlot* line = chart->AddPlot(vtkChart::LINE); line->SetInputData(table, 0, 1); // Render the scene and compare the image to a reference image view->GetRenderWindow()->SetMultiSamples(0); view->GetInteractor()->Initialize(); view->GetInteractor()->Start(); return EXIT_SUCCESS; }