Click flag. Tilt gradually to see cone in 3D. Click buttons to highlight 8 or 13 spirals as seen in pine cones. They go clockwise or counterclockwise.
Clones on left each turn the golden angle (137.5 deg). Clones on right translated from positions of clones on left (distance from center translated to y position when tilted). No trigonometry. No explicit Z coordinate. Because the clones turn the golden angle, we see Fibonacci numbers in the spirals (8 or 13, clockwise or counterclockwise).
