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Move precision to global so it can be overwritten by calling script #6

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Move precision to global so it can be overwritten by calling script #6

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ca9129d
fix beam centering when in_height does not equal cn_lego_pitch_stud
jreiberkyle Dec 20, 2024
182ef74
move rendering precision to global so it can be overwritten by callin…
jreiberkyle Dec 23, 2024
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21 changes: 11 additions & 10 deletions customizable_straight_beam_v4o.scad
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@
2024-08-04 there is an asymmetry in the hole, the oPo shows there should be a thin bodred above the hole
*/


$fa = $preview ? 2:.5;
$fs = $preview ? .5:0.35;

// user parameters

Expand All @@ -46,18 +47,18 @@ cn_lego_drill_depth_indent = 0.5;
//How steep the transition from big hole to small hole
cn_lego_drill_sharpness = 0.5;

module body( in_length_stud, in_height = cn_lego_height_beam, in_precision = 0.5 )
module body( in_length_stud, in_height = cn_lego_height_beam)
{
translate([0, cn_lego_width_beam/2, 0])
hull()
{
cylinder(r=cn_lego_width_beam/2, h=in_height,$fa = 0.1+in_precision, $fs = 0.1+in_precision/2);
cylinder(r=cn_lego_width_beam/2, h=in_height);
translate([(in_length_stud-1)*cn_lego_pitch_stud, 0, 0])
cylinder(r=cn_lego_width_beam/2, h=in_height,$fa = 0.1+in_precision, $fs = 0.1+in_precision/2);
cylinder(r=cn_lego_width_beam/2, h=in_height);
}
}

module hole( in_height = cn_lego_height_beam, in_precision = 0.5, in_margin = 0.0 )
module hole( in_height = cn_lego_height_beam, in_margin = 0.0)
{
an_cross_section = [
//Bottom
Expand All @@ -76,11 +77,11 @@ module hole( in_height = cn_lego_height_beam, in_precision = 0.5, in_margin = 0.
[(cn_lego_drill_large+in_margin)/2,0]
];
//Rotate the cross section of the hole around its axis, to generate the hole
rotate_extrude($fa = 0.1+in_precision, $fs = 0.1+in_precision/2)
polygon(an_cross_section);
rotate_extrude()
polygon(an_cross_section);
}

module plus( in_height = cn_lego_height_beam, in_margin = 0.0 )
module plus( in_height = cn_lego_height_beam, in_margin = 0.0)
{
union()
{
Expand All @@ -92,15 +93,15 @@ module plus( in_height = cn_lego_height_beam, in_margin = 0.0 )
}
}

module lego_beam( is_holes, in_height = cn_lego_height_beam, in_margin = 0.0 )
module lego_beam( is_holes, in_height = cn_lego_height_beam, in_margin = 0.0)
{
//number of studs
in_length = len(is_holes);

if (in_length > 0)
{
//Center the beam
translate([0,cn_lego_pitch_stud,0])
translate([0,in_height,0])
rotate([90,0,0])
difference()
{
Expand Down