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44 lines
1.3 KiB
Markdown
44 lines
1.3 KiB
Markdown
# path_extend
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It extends a 2D stroke along a path. This module is suitable for a path created by a continuous function.
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It depends on the rotate_p function and the polytransversals module. Remember to include "rotate_p.scad" and "polytransversals.scad".
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When using this module, you should use points to represent the 2D stroke.
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## Parameters
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- `stroke_pts` : A list of points represent a stroke. See the example below.
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- `path_pts` : A list of points represent the path.
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- `scale` : Scales the 2D shape by this value over the length of the extrusion.
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- `closed` : If the first point and the last point of `path_pts` has the same coordinate, setting `closed` to `true` will connect them automatically.
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## Examples
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include <rotate_p.scad>;
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include <polytransversals.scad>;
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include <path_extend.scad>;
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include <circle_path.scad>;
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include <archimedean_spiral.scad>;
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$fn = 96;
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stroke1 = [[-5, 2.5], [-2.5, 0], [0, 2.5], [2.5, 0], [5, 2.5]];
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path_pts1 = circle_path(50, 60);
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path_extend(stroke1, path_pts1);
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stroke2 = [[-4, 0], [0, 4], [4, 0]];
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pts_angles = archimedean_spiral(
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arm_distance = 17,
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init_angle = 180,
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point_distance = 5,
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num_of_points = 85
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);
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translate([120, 0, 0])
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path_extend(
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stroke2,
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[for(pa = pts_angles) pa[0]]
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);
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