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27 lines
841 B
Markdown
27 lines
841 B
Markdown
# lines_intersection
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Find the intersection of two line segments. Return `[]` if lines don't intersect.
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**Since:** 2.4
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## Parameters
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- `line1` : Two points of 2D or 3D line1.
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- `line2` : Two points of 2D or 3D line2.
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- `ext` : Default to `false`, which doesn't extend a line to an intersection with another line.
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- `epsilon` : An upper bound on the relative error due to rounding in floating point arithmetic. Default to 0.0001.
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## Examples
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use <lines_intersection.scad>
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line1 = [[0, 0], [0, 10]];
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line2 = [[5, 0], [-5, 5]];
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line3 = [[5, 0], [2.5, 5]];
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assert(lines_intersection(line1, line2) == [0, 2.5]);
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assert(lines_intersection(line1, line3, ext = true) == [0, 10]);
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line4 = [[0, 0, 0], [10, 10, 10]];
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line5 = [[10, 0, 0], [0, 10, 10]];
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assert(lines_intersection(line4, line5) == [5, 5, 5]); |