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Fix for #160

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Revar Desmera 2020-05-18 21:51:25 -07:00
parent fdc49bea02
commit 4a643b57e8
2 changed files with 6 additions and 4 deletions
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2
version.scad
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@ -8,7 +8,7 @@
////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////
BOSL_VERSION = [2,0,307]; BOSL_VERSION = [2,0,308];
// Section: BOSL Library Version Functions // Section: BOSL Library Version Functions

8
walls.scad
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@ -71,10 +71,10 @@ module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orien
// h = Height of wall. // h = Height of wall.
// l = Length of wall. If given as a vector of two numbers, specifies bottom and top lengths, respectively. // l = Length of wall. If given as a vector of two numbers, specifies bottom and top lengths, respectively.
// thick = Thickness of wall. // thick = Thickness of wall.
// wall = The thickness of the thinned portion of the wall. // wall = The thickness of the thinned portion of the wall. Default: `thick/2`
// ang = Maximum overhang angle of diagonal brace. // ang = Maximum overhang angle of diagonal brace.
// braces = If true, adds diagonal crossbraces for strength. // braces = If true, adds diagonal crossbraces for strength.
// strut = The width of the borders and diagonal braces. // strut = The width of the borders and diagonal braces. Default: `thick/2`
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER` // anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0` // spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP` // orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
@ -85,10 +85,12 @@ module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orien
// thinning_wall(h=50, l=[80,50], thick=4); // thinning_wall(h=50, l=[80,50], thick=4);
// Example: Trapezoidal with Braces // Example: Trapezoidal with Braces
// thinning_wall(h=50, l=[80,50], thick=4, strut=4, wall=2, braces=true); // thinning_wall(h=50, l=[80,50], thick=4, strut=4, wall=2, braces=true);
module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut=5, wall=2, anchor=CENTER, spin=0, orient=UP) module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, anchor=CENTER, spin=0, orient=UP)
{ {
l1 = (l[0] == undef)? l : l[0]; l1 = (l[0] == undef)? l : l[0];
l2 = (l[1] == undef)? l : l[1]; l2 = (l[1] == undef)? l : l[1];
strut = is_num(strut)? strut : min(h,l1,l2,thick)/2;
wall = is_num(wall)? wall : thick/2;
bevel_h = strut + (thick-wall)/2/tan(ang); bevel_h = strut + (thick-wall)/2/tan(ang);
cp1 = find_circle_2tangents([0,0,h/2], [l2/2,0,h/2], [l1/2,0,-h/2], r=strut)[0]; cp1 = find_circle_2tangents([0,0,h/2], [l2/2,0,h/2], [l1/2,0,-h/2], r=strut)[0];