This adds mathematical lines to a scene. Their intersection with the current
bounding box will be drawn.
Usage
rgl.abclines(x, y = NULL, z = NULL, a, b = NULL, c = NULL, ...)
abclines3d(x, y = NULL, z = NULL, a, b = NULL, c = NULL, ...)
Arguments
x,y,z
Coordinates of points through which each line passes.
a,b,c
Coordinates of the direction vectors for the lines.
...
Material properties.
Value
A shape ID of the object is returned invisibly.
Details
These functions draw the segment of a line that intersects the current
bounding box of the scene using the parametrization
$(x,y,z) + (a,b,c) * s$ where $s$ is a real number.
Any reasonable way of defining the
coordinates x,y,z and a,b,c is acceptable.
See the function xyz.coords
for details.