Python API¶

Basic usage:

loop_a = [
    [58,42],
    [36,52],
    [20,34],
    [32,13],
    [55,18]]
loop_b = [
    [76,58],
    [43,56],
    [45,23],
    [78,26]]

output = poly_ops.boolean_op([loop_a],[loop_b],poly_ops.difference)
print(output)

Using the poly_ops.Clipper class:

clip = poly_ops.Clipper()
clip.add_loop_subject(loop_a)
clip.add_loop_clip(loop_b)

output2 = clip.execute(poly_ops.xor)

Getting the results as a hierarchy instead of a flat list:

def print_polygon(poly,level=0):
    indent = '  '*level
    for p in poly.loop:
        print(f"{indent}{p[0]},{p[1]}")

    print()

    if poly.children:
        print(f"{indent}nested polygons:")
        for child in poly.children: print_polygon(child,level+1);

...

output = poly_ops.boolean_op([loop_a],[loop_b],poly_ops.normalize,tree_out=True)
for loop in output: print_polygon(loop)

Installing:

pip install –user polyops @ git+https://github.com/Rouslan/polyops

Reference: