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Added linear_extrude_bezier().

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Revar Desmera 2018-10-03 18:24:07 -07:00
parent 97723305fb
commit 2673b157a2
1 changed files with 49 additions and 17 deletions
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beziers.scad
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@ -63,8 +63,8 @@ function bezier_polyline(bezier, splinesteps=16, N=3) = concat(
// Takes a closed 2D bezier path, and creates a 2D polygon from it.
// bezier = array of 2D bezier path points
// splinesteps = number of straight lines to split each bezier segment into
// N = number of points in each bezier segment. Cubic = 3
// splinesteps = number of straight lines to split each bezier segment into. default=16
// N = number of points in each bezier segment. default=3 (cubic)
module bezier_polygon(bezier, splinesteps=16, N=3) {
polypoints=bezier_polyline(bezier, splinesteps, N);
polygon(points=slice(polypoints, 0, -1));
@ -102,9 +102,11 @@ function fillet_path(pts, fillet) = concat(
// Takes a closed 2D bezier and rotates it around the X axis, forming a solid.
// bezier = array of points for the bezier path to rotate.
// splinesteps = number of segments to divide each bezier segment into.
// N = number of points in each bezier segment. Cubic = 3
// bezier = array of 2D points for the bezier path to rotate.
// splinesteps = number of segments to divide each bezier segment into. default=16
// N = number of points in each bezier segment. default=3 (cubic)
// convexity = max number of walls a line could pass through, for preview. default=10
// angle = degrees of sweep to make. default=360
// Example:
// path = [
// [ 0, 10], [ 50, 0], [ 50, 40],
@ -114,11 +116,14 @@ function fillet_path(pts, fillet) = concat(
// [ 0, 10]
// ];
// revolve_bezier(path, splinesteps=32, $fn=180);
module revolve_bezier(bezier, splinesteps=16, N=3) {
yrot(90) rotate_extrude(convexity=10) {
module revolve_bezier(bezier, splinesteps=16, N=3, convexity=10, angle=360) {
yrot(90) rotate_extrude(convexity=convexity, angle=angle) {
xrot(180) zrot(-90) bezier_polygon(bezier, splinesteps, N);
}
}
module rotate_extrude_bezier(bezier, splinesteps=16, N=3, convexity=10, angle=360) {
revolve_bezier(bezier, splinesteps=splinesteps, N=N, convexity=convexity, angle=angle);
}
// Takes a 2D bezier path and closes it to the X axis.
@ -149,30 +154,36 @@ function bezier_offset(inset, bezier, N=3) =
// Takes a 2D bezier and rotates it around the X axis, forming a solid.
// bezier = array of points for the bezier path to rotate.
// splinesteps = number of segments to divide each bezier segment into.
// splinesteps = number of segments to divide each bezier segment into. default=16
// N = number of points in each bezier segment. default=3 (cubic)
// convexity = max number of walls a line could pass through, for preview. default=10
// angle = degrees of sweep to make. default=360
// Example:
// path = [ [0, 10], [33, 10], [66, 40], [100, 40] ];
// revolve_bezier_solid_to_axis(path, splinesteps=32, $fn=72);
module revolve_bezier_solid_to_axis(bezier, splinesteps=16, N=3) {
revolve_bezier(bezier=bezier_close_to_axis(bezier), splinesteps=splinesteps, N=N);
module revolve_bezier_solid_to_axis(bezier, splinesteps=16, N=3, convexity=10, angle=360) {
revolve_bezier(bezier=bezier_close_to_axis(bezier), splinesteps=splinesteps, N=N, convexity=convexity, angle=angle);
}
// Takes a 2D bezier and rotates it around the X axis, into a hollow shell.
// bezier = array of points for the bezier path to rotate.
// offset = the thickness of the created shell.
// splinesteps = number of segments to divide each bezier segment into.
// splinesteps = number of segments to divide each bezier segment into. default=16
// N = number of points in each bezier segment. default=3 (cubic)
// convexity = max number of walls a line could pass through, for preview. default=10
// angle = degrees of sweep to make. default=360
// Example:
// path = [ [0, 10], [33, 10], [66, 40], [100, 40] ];
// revolve_bezier_offset_shell(path, offset=1, splinesteps=32, $fn=72);
module revolve_bezier_offset_shell(bezier, offset=1, splinesteps=16, N=3) {
module revolve_bezier_offset_shell(bezier, offset=1, splinesteps=16, N=3, convexity=10, angle=360) {
revolve_bezier(bezier=bezier_offset(offset, bezier), splinesteps=splinesteps, N=N);
}
// Extrudes 2D children along a bezier path.
// bezier = array of points for the bezier path to extrude along.
// splinesteps = number of segments to divide each bezier segment into.
// splinesteps = number of segments to divide each bezier segment into. default=16
// Example:
// path = [ [0, 0, 0], [33, 33, 33], [66, -33, -33], [100, 0, 0] ];
// extrude_2d_shapes_along_bezier(path, splinesteps=32)
@ -222,12 +233,12 @@ module extrude_2d_shapes_along_bezier(bezier, splinesteps=16, N=3) {
// Takes a closed 2D bezier path, centered on the XY plane, and
// extrudes it perpendicularly along a 3D bezier path, forming a solid.
// bezier = Array of points of a bezier path, to be extruded.
// path = Array of points of a bezier path, to extrude along.
// bezier = Array of 2D points of a bezier path, to be extruded.
// path = Array of 3D points of a bezier path, to extrude along.
// pathsteps = number of steps to divide each path segment into.
// bezsteps = number of steps to divide each bezier segment into.
// bezN = number of points in each extruded bezier segment. Cubic = 3
// pathN = number of points in each path bezier segment. Cubic = 3
// bezN = number of points in each extruded bezier segment. default=3 (cubic)
// pathN = number of points in each path bezier segment. default=3 (cubic)
// Example:
// bez = [ [-15, 0], [25, -15], [-5, 10], [0, 10], [5, 10], [10, 5], [15, 0], [10, -5], [5, -10], [0, -10], [-5, -10], [-10, -5], [-15, 0] ];
// path = [ [0, 0, 0], [33, 33, 33], [66, -33, -33], [100, 0, 0] ];
@ -239,4 +250,25 @@ module extrude_bezier_along_bezier(bezier, path, pathsteps=16, bezsteps=16, bezN
}
// Takes a closed 2D bezier path, centered on the XY plane, and
// extrudes it linearly upwards, forming a solid.
// bezier = Array of 2D points of a bezier path, to be extruded.
// splinesteps = number of steps to divide each bezier segment into. default=16
// N = number of points in each extruded bezier segment. default = 3 (cubic)
// center = if true, the extruded solid is centered vertically at z=0.
// convexity = max number of walls a line could pass through, for preview. default=10
// twist = degrees to twist over length of extrusion. default=0
// scale = relative size of top of extrusion to the bottom. default=1.0
// slices = number of vertical slices to use for twisted extrusion. default=20
// Example:
// bez = [ [-15, 0], [25, -15], [-5, 10], [0, 10], [5, 10], [10, 5], [15, 0], [10, -5], [5, -10], [0, -10], [-5, -10], [-10, -5], [-15, 0] ];
// linear_extrude_bezier(bez, splinesteps=32, );
module linear_extrude_bezier(bezier, height=100, splinesteps=16, N=3, center=true, convexity=10, twist=0, slices=20, scale=1.0) {
linear_extrude(height=height, center=center, convexity=convexity, twist=twist, slices=slices, scale=scale) {
bezier_polygon(bezier, splinesteps=splinesteps, N=N);
}
}
// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap