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Add scaling to height maps

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Elod Csirmaz 2024-12-08 00:43:16 +00:00
parent 6f2503038f
commit acb7f9b917
1 changed files with 5 additions and 3 deletions
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8
openscad_py/polyhedron.py
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@ -97,13 +97,15 @@ class Polyhedron(Object):
return cls(points=point_list, faces=faces, convexity=convexity)
@classmethod
def from_heightmap(cls, heights: List[List[float]], base: float = 0., convexity: int = 10):
def from_heightmap(cls, heights: List[List[float]], base: float = 0., step_x: float = 1., step_y: float = 1., convexity: int = 10):
"""Construct a polyhedron from a 2D matrix of heights. If the height at [0,0] is Z, it maps
to the point (0, 0, Z).
Arguments:
- heights: The 2D matrix of heights
- base: The height at which the base will be - in the scale of heights (optional; default 0)
- step_x: The X coordinate becomes `step_x * index_x` (default 1)
- step_y: The Y coordinate becomes `step_y * index_y` (default 1)
- convexity: see OpenSCAD
"""
rows = len(heights)
@ -113,8 +115,8 @@ class Polyhedron(Object):
bottom_point_map = {}
for row_ix, row in enumerate(heights):
for col_ix, height in enumerate(row):
point = Point([row_ix, col_ix, height])
bottom_point = Point([row_ix, col_ix, base])
point = Point([row_ix*step_x, col_ix*step_y, height])
bottom_point = Point([row_ix*step_x, col_ix*step_y, base])
point_map[(row_ix, col_ix)] = len(point_list)
point_list.append(point)