Function

Summary

Draws an arc.

Package

graphics-ports

Signature

draw-arc port x y width height start-angle sweep-angle &rest args &key filled

Arguments

port

A graphics port.

x

A real number.

y

A real number.

width

A real number.

height

A real number.

start-angle

A real number.

sweep-angle

A real number.

args

graphics-state parameters passed as keyword arguments.

filled

A boolean.

Description

The draw-arc function draws an arc contained in the rectangle from ( x y ) to ( x+width y+height ) from start-angle to start-angle+sweep-angle . Both angles are specified in radians. Currently, arcs are parts of ellipses whose major and minor axes are parallel to the screen axes. When port 's drawing-mode is :quality the arc is transformed properly, but if drawing-mode is :compatible and port has rotation in its transform, the enclosing rectangle is modified to be the external enclosing orthogonal rectangle of the rotated rectangle. The start angle is rotated. The transform, foreground, background, operation, thickness, scale-thickness , mask , shape-mode and compositing-mode from the port 's graphics-state are all used, unless overridden in args . Additionally on Unix only, stipple and pattern are used. When filled is non- nil , a sector is drawn.

See also

draw-arcs
make-graphics-state