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refactor: vector minus

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Justin Lin
2022-04-12 09:40:48 +08:00
parent 903caed63c
commit db0d381ceb
1 changed files with 3 additions and 6 deletions
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9
src/_impl/_in_shape_impl.scad
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@@ -2,12 +2,9 @@ use <__comm__/__in_line.scad>;
function _in_shape_in_line_equation(edge, pt) = function _in_shape_in_line_equation(edge, pt) =
let( let(
x1 = edge[0].x, v = edge[1] - edge[0],
y1 = edge[0].y, a = v.y / v.x,
x2 = edge[1].x, b = edge[0].y - a * edge[0].x
y2 = edge[1].y,
a = (y2 - y1) / (x2 - x1),
b = y1 - a * x1
) )
(pt.y == a * pt.x + b); (pt.y == a * pt.x + b);