cylindersegment: adds part of a cylinder to a plot

In shape: Functions for Plotting Graphical Shapes, Colors

adds part of a cylinder to a plot

Description

adds a segment of a cylinder to a plot

Usage

cylindersegment(rx = 1, ry = rx, from = pi, to = 3*pi/2, len = 1, 
                mid = c(0,0), angle = 0, dr = 0.01, col = "black", 
                delt = 1.0, ...)

Arguments

rx	horizontal radius of full cylinder.
ry	vertical radius of full cylinder.
from	start radius of segment, radians.
to	end radius of segment, radians.
len	cylinder length.
mid	midpoint of cylinder.
angle	rotation angle, degrees.
dr	size of segments, in radians, to draw top/bottom ellipse (decrease for smoother).
col	color of slice.
delt	increase factor, from left to right.
...	arguments passed to polygon function.

Details

When angle = 0 (the default), the cylindersegment is parallel to the x-axis.

rx and ry are the horizontal and vertical radiusses of the bordering ellipses. Here "horizontal" and "vertical" denote the position BEFORE rotation

if delt > 1, the width of the cylinder will increase from left to right.

Author(s)

Karline Soetaert <[e-mail]>

See Also

filledcylinder

Examples

emptyplot(main = "cylindersegment")
cylindersegment(mid = c(0.1, 0.5), rx = 0.1, ry = 0.1, 
                from = pi, to = 3*pi/2, col = "blue",  
                len = 0.5, delt = 1.1, lwd = 2, angle = 90)
cylindersegment(mid = c(0.8, 0.5), rx = 0.1, ry = 0.1, 
                from = 0, to = pi/2, col = "red", len = 0.5, 
                delt = 1.0, lwd = 2, angle = 45)
cylindersegment(mid = c(0.5, 0.5), rx = 0.1, ry = 0.1, 
                from = pi/2, to = pi, col = "lightblue", 
                len = 0.2, delt = 1.5, lwd = 2)  
for (i in seq(0.1, 0.9, 0.1))
  cylindersegment(mid = c(i, 0.9), rx = 0.035, ry = 0.05, 
                  from = pi/2, to = 3*pi/2, col = "darkblue", 
                  len = 0.1, angle = 90)

shape documentation built on May 29, 2024, 5:07 a.m.