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| // More information on original version: https://danielupshaw.com/openscad-rounded-corners/ | |
| // | |
| // Changed by GGS67 to remove some limitations: | |
| // | |
| // 1. Allow radius>length for rounded corners in one axis only (problem reported on original page in 2015) | |
| // 2. Remove limitation where for apply_to=(x|y|z)max or (x|y|z)min the dimension of the corresponding perpendicular | |
| // axis had to be at least 3 times the radius because of fixed cylinder height. Now cylinder height is always computed not | |
| // to interferr with opposite corner | |
| // Set to 0.01 for higher definition curves (renders slower) | |
| $fs = 0.15; | |
| module roundedcube(size = [1, 1, 1], center = false, radius = 0.5, apply_to = "all") { | |
| // If single value, convert to [x, y, z] vector | |
| size = (size[0] == undef) ? [size, size, size] : size; | |
| //echo(str("roundedcube([",size[0],size[1],size[2],"], radius=", radius, ", apply_to=",apply_to)); | |
| translate_min = 0; | |
| translate_xmax = size[0]; | |
| translate_ymax = size[1]; | |
| translate_zmax = size[2]; | |
| diameter = radius * 2; | |
| function adj2(i,dt,df) = (i==0)?dt:df; | |
| function adj(i,d) = adj2(i,d,-d); | |
| function adjR(i) = adj(i,radius); | |
| obj_translate = (center == false) ? | |
| [0, 0, 0] : [ | |
| -(size[0] / 2), | |
| -(size[1] / 2), | |
| -(size[2] / 2) | |
| ]; | |
| translate(v = obj_translate) { | |
| hull() { | |
| for (xi = [0:1]) { | |
| translate_x = [translate_min, translate_xmax][xi]; | |
| x_at = (xi == 0) ? "min" : "max"; | |
| for (yi = [0:1]) { | |
| translate_y = [translate_min, translate_ymax][yi]; | |
| y_at = (yi == 0) ? "min" : "max"; | |
| for (zi = [0:1]) { | |
| translate_z = [translate_min, translate_zmax][zi]; | |
| z_at = (zi == 0) ? "min" : "max"; | |
| if ( | |
| (apply_to == "all") || | |
| (apply_to == "xmin" && x_at == "min") || (apply_to == "xmax" && x_at == "max") || | |
| (apply_to == "ymin" && y_at == "min") || (apply_to == "ymax" && y_at == "max") || | |
| (apply_to == "zmin" && z_at == "min") || (apply_to == "zmax" && z_at == "max") | |
| ) { | |
| // GGS: Separate translates to asccomodate changes allowing sizes < 3 x radius | |
| translate(v = [translate_x+adjR(xi), translate_y+adjR(yi), translate_z+adjR(zi)]) | |
| sphere(r = radius); | |
| } else { | |
| rotate = | |
| (apply_to == "xmin" || apply_to == "xmax" || apply_to == "x") ? [0, 90, 0] : ( | |
| (apply_to == "ymin" || apply_to == "ymax" || apply_to == "y") ? [90, 90, 0] : | |
| [0, 0, 0] | |
| ); | |
| //Compute cylinder height to make it work with cubbe sizes up to 3xradius which did not work | |
| // in original because cylinders would "eat" spheres | |
| h1 = | |
| (apply_to == "xmin" || apply_to == "xmax" || apply_to == "x") ? size[0]-radius : ( | |
| (apply_to == "ymin" || apply_to == "ymax" || apply_to == "y") ? size[1]-radius : | |
| size[2]-radius | |
| ); | |
| h2 = | |
| (apply_to == "xmin" || apply_to == "xmax" || apply_to == "x") ? size[0]/4 : ( | |
| (apply_to == "ymin" || apply_to == "ymax" || apply_to == "y") ? size[1]/4 : | |
| size[2]/4 | |
| ); | |
| h=(h1<h2 && h1>0)?h1:h2; | |
| height=(h<radius)?h:radius; | |
| //echo(str("h1=",h1)); | |
| //echo(str("h2=",h2)); | |
| //echo(str("h=",h)); | |
| //echo(str("height=",height)); | |
| trans = | |
| (apply_to == "xmin" || apply_to == "xmax" || apply_to == "x") ? [adj2(xi,0,-height),adjR(yi),adjR(zi)] : ( | |
| (apply_to == "ymin" || apply_to == "ymax" || apply_to == "y") ? [adjR(xi),adj2(yi,0,-height),adjR(zi)] : | |
| [adjR(xi),adjR(yi),adj2(zi,0,-height)] | |
| ); | |
| //echo(trans); | |
| translate(v = [translate_x+trans[0], translate_y+trans[1], translate_z+trans[2]]) | |
| rotate(a = rotate) | |
| cylinder(h = height, r = radius, center = false); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } |
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Changed to remove some limitations.