Primitive shapes and text
Functions to create primitive graphics (shapes and text)
- circular_sector(radius: float, angle: float, color: Color) Graphic
Creates a circular sector belonging to a circle of the given radius, filled with a color.
A circular sector is a portion of a circle enclosed between two radii and an arc. Considering a circle as a clock, the first radius is supposed to “point” towards 3 o’clock. The angle determines the position of the second radius, computed starting from the first one in the clockwise direction.
radius – radius of the circle from which the circular sector is taken, in pixel
angle – central angle, in degrees
color – the color to be used to fill the circular sector
the specified circular sector as a graphic
- ellipse(width: float, height: float, color: Color) Graphic
Creates an ellipse with the given width and height, filled with a color.
When width and height are the same, the ellipse becomes a circle with a diameter equal to the provided size.
width – width of the ellipse, in pixel
height – height of the ellipse, in pixel
color – the color to be used to fill the circle
the specified circle as a graphic
- empty_graphic() Graphic
Creates an empty graphic. When an empty graphic is composed with any other graphic, it behaves as a neutral element: the result is always identical to the other graphic.
An empty graphic cannot be shown nor saved.
an empty graphic (width and height 0 pixels)
- rectangle(width: float, height: float, color: Color) Graphic
Creates a rectangle of the given size, filled with a color.
width – width of the rectangle, in pixel
height – height of the rectangle, in pixel
color – the color to be used to fill the rectangle
the specified rectangle as a graphic
- text(content: str, font: str, points: float, color: Color) Graphic
Creates a graphic with the text rendered using the specified font, size and color.
When the indicated True-Type Font is not found in the system, a very basilar font that is always available is used instead. The resulting graphic has the minimal size that still fits the whole text.
content – the text to render
font – the name of the font (e.g., “arial” on Windows, “Arial” on macOS)
points – size in typographic points (e.g., 16)
color – the color to be used to render the text
the specified text as a graphic