This function subdivides one triangle into either two or three more based on the Penrose tiling rules.
subdivide(shape, point1_x, point1_y, point2_x, point2_y, point3_x, point3_y)
| shape | Either "t" or "T" for a thin or thick triangle |
|---|---|
| point1_x | x position of the first point |
| point1_y | y position of the first point |
| point2_x | x position of the middle point |
| point2_y | y position of the middle point |
| point3_x | x position of the last point |
| point3_y | y position of the last point |
A data set of triangles
If the shape is "t", there will be two triangles. If the shape is "T" or
anything else, there will be three triangles. The point2_x and
point2_y parameters determine the middle of the triangle. Which side
point1_x and point1_y versus point3_x and
point3_y determines if it is a left or right triangle. This function
is mostly used internally.