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Added extrude_from_to()

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Revar Desmera 2019-02-03 00:12:37 -08:00
parent 89657fdcb2
commit 67dbb575c6
1 changed files with 31 additions and 0 deletions
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paths.scad
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@ -55,6 +55,37 @@ module modulated_circle(r=40, sines=[10])
}
// Extrudes a 2D shape between the points pt1 and pt2.
// Takes as children a set of 2D shapes to extrude.
// pt1 = starting point of extrusion.
// pt2 = ending point of extrusion.
// convexity = max number of times a line could intersect a wall of the 2D shape being extruded.
// twist = number of degrees to twist the 2D shape over the entire extrusion length.
// scale = scale multiplier for end of extrusion compared the start.
// slices = Number of slices along the extrusion to break the extrusion into. Useful for refining `twist` extrusions.
// Example:
// extrude_from_to([0,0,0], [10,20,30], convexity=4, twist=360, scale=3.0, slices=40) {
// xspread(3) circle(3, $fn=32);
// }
module extrude_from_to(pt1, pt2, convexity=undef, twist=undef, scale=undef, slices=undef) {
delta = pt2 - pt1;
dist2d = norm([delta[0], delta[1], 0]);
dist3d = norm(delta);
theta = atan2(delta[1], delta[0]);
phi = atan2(delta[2], dist2d);
translate(pt1) {
rotate([0, -phi, theta]) {
yrot(90) {
linear_extrude(height=dist3d, convexity=convexity, center=false, slices=slices, twist=twist, scale=scale) {
children();
}
}
}
}
}
// Similar to linear_extrude(), except the result is a hollow shell.
// wall = thickness of shell wall.
// height = height of extrusion.