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Added teardrop= to cyl()
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Revar Desmera
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737bd9aac8
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2 changed files with 40 additions and 5 deletions
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@ -665,8 +665,8 @@ module dashed_stroke(path, dashpat=[3,3], width=1, closed=false, fit=true, round
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// Section: Computing paths
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// Function&Module: arc()
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// Synopsis: Draws a 2d pie-slice or returns 2D or 3D path forming an arc.
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// Topics: Shapes (2D), Path Generators (2D)
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// Synopsis: Draws a 2D pie-slice or returns 2D or 3D path forming an arc.
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// Topics: Paths (2D), Paths (3D), Shapes (2D), Path Generators
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//
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// Usage: 2D arc from 0º to `angle` degrees.
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// path=arc(n, r|d=, angle);
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@ -684,7 +684,6 @@ module dashed_stroke(path, dashpat=[3,3], width=1, closed=false, fit=true, round
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// path=arc(n, corner=[P0,P1,P2], r=);
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// Usage: as module
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// arc(...) [ATTACHMENTS];
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// Topics: Paths (2D), Paths (3D), Shapes (2D), Path Generators
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// Description:
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// If called as a function, returns a 2D or 3D path forming an arc.
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// If called as a module, creates a 2D arc polygon or pie slice shape.
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@ -604,7 +604,7 @@ function cuboid(
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// chamfer = The chamfer size for the vertical-ish edges of the prismoid. If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-]. Default: 0 (no chamfer)
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// chamfer1 = The chamfer size for the bottom of the vertical-ish edges of the prismoid. If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].
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// chamfer2 = The chamfer size for the top of the vertical-ish edges of the prismoid. If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `BOTTOM`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
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// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
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//
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@ -1286,6 +1286,8 @@ function cylinder(h, r1, r2, center, r, d, d1, d2, anchor, spin=0, orient=UP) =
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// cyl(l|h|length|height, r1=, r2=, texture=, [tex_size=]|[tex_counts=], [tex_scale=], [tex_rot=], [tex_samples=], [tex_style=], [tex_taper=], [tex_inset=], ...);
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// cyl(l|h|length|height, d1=, d2=, texture=, [tex_size=]|[tex_counts=], [tex_scale=], [tex_rot=], [tex_samples=], [tex_style=], [tex_taper=], [tex_inset=], ...);
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//
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// Usage: Caled as a function to get a VNF
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// vnf = cyl(...);
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//
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// Description:
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// Creates cylinders in various anchorings and orientations, with optional rounding, chamfers, or textures.
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@ -1348,6 +1350,7 @@ function cylinder(h, r1, r2, center, r, d, d1, d2, anchor, spin=0, orient=UP) =
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// rounding1 = The radius of the rounding on the bottom end of the cylinder.
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// rounding2 = The radius of the rounding on the top end of the cylinder.
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// realign = If true, rotate the cylinder by half the angle of one face.
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// teardrop = If given as a number, rounding around the bottom edge of the cylinder won't exceed this many degrees from vertical. If true, the limit angle is 45 degrees. Default: `false`
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// texture = A texture name string, or a rectangular array of scalar height values (0.0 to 1.0), or a VNF tile that defines the texture to apply to vertical surfaces. See {{texture()}} for what named textures are supported.
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// tex_size = An optional 2D target size for the textures. Actual texture sizes will be scaled somewhat to evenly fit the available surface. Default: `[5,5]`
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// tex_counts = If given instead of tex_size, gives the tile repetition counts for textures over the surface length and height.
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@ -1385,6 +1388,9 @@ function cylinder(h, r1, r2, center, r, d, d1, d2, anchor, spin=0, orient=UP) =
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// Example: Rounding
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// cyl(l=40, d=40, rounding=10);
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//
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// Example: Teardrop Bottom Rounding
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// cyl(l=40, d=40, rounding=10, teardrop=true);
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//
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// Example: Heterogenous Chamfers and Rounding
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// ydistribute(80) {
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// // Shown Front to Back.
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@ -1490,6 +1496,7 @@ function cyl(
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chamfang, chamfang1, chamfang2,
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rounding, rounding1, rounding2,
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circum=false, realign=false, shift=[0,0],
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teardrop=false,
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from_end, from_end1, from_end2,
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texture, tex_size=[5,5], tex_counts,
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tex_inset=false, tex_rot=false,
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@ -1559,6 +1566,12 @@ function cyl(
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dy1 = abs(_chamf1 ? chamf1l : round1 ? roundlen1 : 0),
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dy2 = abs(_chamf2 ? chamf2l : round2 ? roundlen2 : 0),
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teardrop = teardrop == true? 45 :
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teardrop == false? 90 :
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assert(is_finite(teardrop))
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assert(teardrop>=0 && teardrop<=90)
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teardrop,
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checks2 =
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assert(is_finite(round1), "rounding1 must be a number if given.")
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assert(is_finite(round2), "rounding2 must be a number if given.")
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@ -1570,14 +1583,18 @@ function cyl(
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undef,
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path = [
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if (texture==undef) [0,-l/2],
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if (!approx(chamf1r,0))
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each [
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[r1, -l/2] + polar_to_xy(chamf1r,180),
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[r1, -l/2] + polar_to_xy(chamf1l,90+vang),
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]
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else if (!approx(round1,0))
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else if (!approx(round1,0) && teardrop < 90)
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each _teardrop_corner(corner=[[max(0,r1-2*roundlen1),-l/2],[r1,-l/2],[r2,l/2]], r=abs(round1), teardrop)
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else if (!approx(round1,0) && teardrop >= 90)
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each arc(r=abs(round1), corner=[[max(0,r1-2*roundlen1),-l/2],[r1,-l/2],[r2,l/2]])
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else [r1,-l/2],
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if (is_finite(chamf2r) && !approx(chamf2r,0))
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each [
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[r2, l/2] + polar_to_xy(chamf2l,270+vang),
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@ -1586,6 +1603,7 @@ function cyl(
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else if (is_finite(round2) && !approx(round2,0))
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each arc(r=abs(round2), corner=[[r1,-l/2],[r2,l/2],[max(0,r2-2*roundlen2),l/2]])
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else [r2,l/2],
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if (texture==undef) [0,l/2],
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]
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) rotate_sweep(path,
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@ -1603,6 +1621,22 @@ function cyl(
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reorient(anchor,spin,orient, r1=r1, r2=r2, l=l, shift=shift, p=ovnf);
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function _teardrop_corner(corner, r, ang=45) =
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let(
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cp = circle_2tangents(r, corner)[0],
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path1 = arc(r=r, corner=corner),
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path2 = [
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for (p = select(path1,0,-2))
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if (v_theta(p-cp) >= -ang) p,
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last(path1)
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],
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path = [
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line_intersection([corner[0],corner[1]],[path2[0],path2[0]+polar_to_xy(1,-90-ang)]),
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each path2
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]
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) path;
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module cyl(
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h, r, center,
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l, r1, r2,
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@ -1611,6 +1645,7 @@ module cyl(
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chamfang, chamfang1, chamfang2,
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rounding, rounding1, rounding2,
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circum=false, realign=false, shift=[0,0],
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teardrop=false,
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from_end, from_end1, from_end2,
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texture, tex_size=[5,5], tex_counts,
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tex_inset=false, tex_rot=false,
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@ -1640,6 +1675,7 @@ module cyl(
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chamfang=chamfang, chamfang1=chamfang1, chamfang2=chamfang2,
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rounding=rounding, rounding1=rounding1, rounding2=rounding2,
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from_end=from_end, from_end1=from_end1, from_end2=from_end2,
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teardrop=teardrop,
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texture=texture, tex_size=tex_size,
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tex_counts=tex_counts, tex_scale=tex_scale,
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tex_inset=tex_inset, tex_rot=tex_rot,
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