It's an app that I made through an online course in which I learned the basics of the Qt framework and GUI building. https://git.thepra.dev/thepra/QtCurvesCpp
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#ifndef RENDERAREA_H
#define RENDERAREA_H
#include <QWidget>
#include <QPen>
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,
Line,
Circle,
Ellipse,
Fancy,
Starfish,
Cloud1,
Cloud2
};
void setBackgroundColor(QColor color) { mBackgroundColour = color; }
QColor backgroundColor() const { return mBackgroundColour; }
void setShapeColor(QColor color) { mPen.setColor(color); }
QColor shapeColor() const { return mPen.color(); }
void setShape(ShapesType shape) { mShape = shape; OnShapeChanged(); }
ShapesType shape() const { return mShape; }
void setInternalLenght(double l){mIntervalLenght=l;repaint();}
double intervalLenght() const {return mIntervalLenght;}
void setScale(double s){mScale=s;repaint();}
double scale() const {return mScale;}
void setStepCount(int s){mStepCount=s;repaint();}
int stepCount() const {return mStepCount;}
signals:
protected:
void paintEvent(QPaintEvent* event) Q_DECL_OVERRIDE;
public slots:
private:
void OnShapeChanged();
QPointF Compute(double t);
QPointF ComputeAstroid(double t);
QPointF ComputeCycloid(double t);
QPointF ComputeHuygens(double t);
QPointF ComputeHypo(double t);
QPointF ComputeLine(double t);
QPointF ComputeCircle(double t);
QPointF ComputeEllipse(double t);
QPointF ComputeFancy(double t);
QPointF ComputeStarfish(double t);
QPointF ComputeCloud1(double t);
QPointF ComputeCloud2(double t);
QPointF ComputeCloudWithSign(double t,double sign);
QColor mBackgroundColour;
ShapesType mShape;
QPen mPen;
double mScale,mIntervalLenght;
int mStepCount;
};
#endif // RENDERAREA_H