config.txt

init P

# I use the () to revert the position back to the "current" pyramid's bottom
# left, facing right, in preparation for drawing the next pyramid.

# Replace one square pyramid with 5 pyramids, always ending at the bottom left
# corner facing right.
P ((1PN2PN-N3PN-N4P)UND5P)

# N is used to move forward the width of a single pyramid. It doubles every
# iteration, since every existing pyramid's width doubles at the same rate.
N NN

actions

# 1, 2, 3, 4, and 5 all just set colors. You can remove them from the
# replacement string to simplify it if you want.
1
set_color_r 0.7
set_color_g 0.3
set_color_b 1.0

2
set_color_r 1.0
set_color_g 0.2
set_color_b 0.2

3
set_color_r 0.2
set_color_g 1.0
set_color_b 0.2

4
set_color_r 0.2
set_color_g 0.2
set_color_b 1.0

5
set_color_r 1.0
set_color_g 1.0
set_color_b 1.0

-
rotate 90

(
push_position 0.0

)
pop_position 0.0

N
move_forward_nodraw 1.0

# Face "upwards" to move to the upper pyramid.
U
rotate 45
pitch 45

# Undo the "U" rotation in preparation for drawing the upper pyramid.
D
pitch -45
rotate -45


# P = draw a single square pyramid. Starts at the bottom left corner facing
# right, and ends at the same place.
P

# Keep track of our start position, we'll return here at the end.
push_position 0

# Bottom left -> bottom right, up edge from bottom right
move_forward 1
push_position 0
rotate 135
pitch 45
move_forward 1
pop_position 0

# Bottom right -> up right, up edge from up right
rotate 90
move_forward 1
push_position 0
rotate 135
pitch 45
move_forward 1
pop_position 0

# up right -> up left, up edge from up left
rotate 90
move_forward 1
push_position 0
rotate 135
pitch 45
move_forward 1
pop_position 0

# up left -> bottom left, up edge from bottom left
rotate 90
move_forward 1
rotate 135
pitch 45
move_forward 1

# Return to bottom left, facing right.
pop_position 0