🐢 Logo 3D Shape Generator

Move forward n millimeters. Example: FORWARD 50

Move backward n millimeters. Example: BACKWARD 30

Turn right n degrees. Example: RIGHT 90

Turn left n degrees. Example: LEFT 45

Return to origin (0,0) facing up (90°)

Lower pen to start drawing lines

Lift pen to stop drawing (use for moving without drawing)

Move to coordinate (x, y). Example: SETXY 10 20

Set X coordinate only

Set Y coordinate only

Set heading to n degrees (0=right, 90=up, 180=left, 270=down)

Draw a circle with given radius in mm. Example: CIRCLE 25

Draw an arc. Example: ARC 30 180 (half circle)

Repeat commands n times. Supports nesting and multi-line format:

REPEAT 4 [
  FORWARD 50
  RIGHT 90
]

# Nested REPEAT
REPEAT 3 [
  REPEAT 4 [
    FORWARD 10
    RIGHT 90
  ]
  RIGHT 120
]

Add comments to explain your code