These functions constitute a vectorized API for adding graphical
primitive items into a scene. Each primitive is represented by a
separate canvas item. This is a different paradigm from the
layer-based painting, which has a more appropriate design for most
interactive graphics. Most of the time, the user should ignore this API.
Usage
qscene.points(s, x, y, radius=1)
qscene.lines(s, x, y, lwd=0)
qscene.segments(s, x1, y1, x2, y2, lwd=0)
qscene.rect(s, x, y, w=1, h=1)
Arguments
s
The scene, a C++ QGraphicsScene
x
The X coordinates, as expected by xy.coords, recycled
y
The Y coordinates, as expected by xy.coords, recycled
radius
The scalar radius for the points, in device coordinates
lwd
The vector of line widths, in device coordinates, recycled
