QtCurvesCpp/renderarea.h

#ifndef RENDERAREA_H
#define RENDERAREA_H

#include <QWidget>

class RenderArea : public QWidget
{
		Q_OBJECT
	public:
		explicit RenderArea(QWidget *parent = nullptr);

		QSize minimumSizeHint() const Q_DECL_OVERRIDE;
		QSize sizeHint() const Q_DECL_OVERRIDE;

		enum ShapesType{
			Astroid,
			Cycloid,
			HuygensCycloid,
			HypoCycloid
		};

		void setBackgroundColor(QColor color) { mBackgroundColour = color; }
		QColor backgroundColor() const { return mBackgroundColour; }
		void setShape(ShapesType shape) { mShape = shape; OnShapeChanged(); }
		ShapesType shape() const { return mShape; }


	signals:

	protected:
		void paintEvent(QPaintEvent* event) Q_DECL_OVERRIDE;

	public slots:

	private:
		void OnShapeChanged();
		QPointF ComputeAstroid(double t);
		QPointF ComputeCycloid(double t);
		QPointF ComputeHuygens(double t);
		QPointF ComputeHypo(double t);
		QPointF Compute(double t);
		QColor mBackgroundColour,mShapeColour;
		ShapesType mShape;
		double mScale,mIntervalLenght;
		int mStepCount;
};
#endif // RENDERAREA_H