class Psychlops::Polygon

Polygon& append(double vertex_x, double vertex_y)

append a new vertex to vertices list of the Polygon instance.

Translation

Polygon& centering()

place the Polygon at center of the window.

Polygon& centering(x, y)

Polygon& centering(Point new_center)

place the rectangle centered at (x,y) or (new_center.x, new_center.y). Typically, the function is used with getCenter() as rect.centering(image.getCenter()).

Polygon& shift(double h, double v)

move the rectangle by (h, v).

Drawing

void draw(color)

draw the ellipse with designated Color;