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cross and dot algorithm

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Justin Lin
2019-05-27 15:29:22 +08:00
parent 769894d1a3
commit 9f0693c3ae
1 changed files with 5 additions and 5 deletions
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10
src/in_shape.scad
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@@ -12,11 +12,11 @@ function _in_shape_in_line_equation(edge, pt) =
(pt[1] == a * pt[0] + b);
function _in_shape_in_edge(edge, pt) =
pt[0] >= min([edge[0][0], edge[1][0]]) &&
pt[0] <= max([edge[0][0], edge[1][0]]) &&
pt[1] >= min([edge[0][1], edge[1][1]]) &&
pt[1] <= max([edge[0][1], edge[1][1]]) &&
((edge[1] - edge[0])[0] == 0 ? (pt[0] == edge[0][0]) : _in_shape_in_line_equation(edge, pt));
let(
v1 = edge[0] - pt,
v2 = edge[1] - pt
)
(cross(v1, v2) == 0) && ((v1 * v2) <= 0);
function _in_shape_in_any_edges_sub(edges, leng, pt, i) =
leng == i ? false : (