[Visualpython-users] Cylinder Example

[Dockeen <do...@mc...>]

I haven't had as much chance as I would like in a while, so
I figured I would take a quick shot at a cylinder example.
I did not write comments, but I think the code is fairly simple.
It is crude, but it works.

from visual import *
from Numeric import *

length = 3.0
radius = 1.0
number_of_steps_length = 30
number_of_angle_steps = 30
length_step = length / number_of_steps_length
angle_step = 2.0 * 3.1415926 / number_of_angle_steps

scene = display(title='Cylinder',
     width=500, height=500, center=(0,0,0), range=(5,5,5))

for i in xrange(0,number_of_steps_length):
    x1 = i * length_step
    x2 = (i + 1) * length_step
    for j in xrange(0,number_of_angle_steps):
        theta = j * angle_step
        y1 = radius * sin(theta)
        z1 = radius * cos(theta)
        y2 = radius * sin(theta + angle_step)
        z2 = radius * cos(theta + angle_step)

        convex(pos = [(x1,y1,z1),(x1,y2,z2),(x2,y1,z1),(x2,y2,z2)], color =
color.red)

Have fun, you just GOTTA love this tool!

Wayne Keen