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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkMathTextUtilities.h"
#include "vtkContext2D.h"
#include "vtkContextItem.h"
#include "vtkContextScene.h"
#include "vtkContextView.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkTextProperty.h"
//------------------------------------------------------------------------------
class ContextMathTextImageTest : public vtkContextItem
{
public:
static ContextMathTextImageTest* New();
vtkTypeMacro(ContextMathTextImageTest, vtkContextItem);
// Paint event for the chart, called whenever the chart needs to be drawn
bool Paint(vtkContext2D* painter) override;
};
//------------------------------------------------------------------------------
int TestContextMathTextImage(int vtkNotUsed(argc), char* vtkNotUsed(argv)[])
{
// Set up a 2D context view, context test object and add it to the scene
vtkNew<vtkContextView> view;
view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
view->GetRenderWindow()->SetSize(325, 150);
vtkNew<ContextMathTextImageTest> test;
view->GetScene()->AddItem(test);
view->GetRenderWindow()->SetMultiSamples(0);
view->GetInteractor()->Initialize();
view->GetInteractor()->Start();
return EXIT_SUCCESS;
}
// Make our new derived class to draw a diagram
vtkStandardNewMacro(ContextMathTextImageTest);
// This function aims to test the primitives provided by the 2D API.
bool ContextMathTextImageTest::Paint(vtkContext2D* painter)
{
painter->GetTextProp()->SetColor(0.4, 0.6, 0.7);
painter->GetTextProp()->SetFontSize(60);
painter->DrawMathTextString(20, 20,
"$\\frac{-b\\pm\\sqrt{b^2-4ac}}"
"{2a}$");
return true;
}
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