// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen // SPDX-License-Identifier: BSD-3-Clause #include "vtkAnnotationLink.h" #include "vtkChartXY.h" #include "vtkContextMouseEvent.h" #include "vtkContextScene.h" #include "vtkContextView.h" #include "vtkFloatArray.h" #include "vtkNew.h" #include "vtkPlot.h" #include "vtkRenderWindow.h" #include "vtkRenderWindowInteractor.h" #include "vtkSmartPointer.h" #include "vtkTable.h" //------------------------------------------------------------------------------ int TestZoomAxis(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); vtkNew link; chart->SetAnnotationLink(link); chart->SetActionToButton(vtkChart::ZOOM_AXIS, vtkContextMouseEvent::LEFT_BUTTON); chart->SetSelectionMethod(vtkChart::SELECTION_PLOTS); // Create a table with some points in it... vtkNew table; vtkNew arrX; arrX->SetName("X Axis"); table->AddColumn(arrX); vtkNew arrS; arrS->SetName("Sine"); table->AddColumn(arrS); // Test charting with a few more points... int numPoints = 100; float inc = 9.5f / (numPoints - 1); table->SetNumberOfRows(numPoints); for (int i = 0; i < numPoints; ++i) { table->SetValue(i, 0, i * inc); table->SetValue(i, 1, sin(i * inc)); } // Add multiple line plots, setting the colors etc vtkPlot* plot = chart->AddPlot(vtkChart::POINTS); plot->SetInputData(table, 0, 1); plot->SetColor(0, 255, 0, 255); plot->SetWidth(1.0); view->Update(); view->Render(); // Inject some mouse events to perform zooming vtkContextMouseEvent event; event.SetLastPos(vtkVector2f(0.0f)); event.SetPos(vtkVector2f(0.0f)); event.SetLastScenePos(vtkVector2f(0.0f)); event.SetScenePos(vtkVector2f(0.0f)); event.SetLastScreenPos(vtkVector2i(0)); event.SetScreenPos(vtkVector2i(0)); event.SetInteractor(view->GetInteractor()); event.SetButton(vtkContextMouseEvent::LEFT_BUTTON); event.SetScenePos(vtkVector2f(350, 250)); chart->MouseButtonPressEvent(event); event.SetLastScenePos(event.GetScenePos()); event.SetScenePos(vtkVector2f(10, 10)); chart->MouseMoveEvent(event); chart->MouseButtonReleaseEvent(event); // Finally render the scene and compare the image to a reference image view->GetRenderWindow()->SetMultiSamples(0); view->GetInteractor()->Initialize(); view->GetInteractor()->Start(); return EXIT_SUCCESS; }