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added ruler

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Adrian Mariano 2019-08-08 23:17:58 -04:00
parent eec1f2ea36
commit 23ac100879
1 changed files with 79 additions and 0 deletions
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debug.scad
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@ -248,4 +248,83 @@ module frame_ref(s=15) {
} }
// Module: ruler()
// Description:
// Creates a ruler for checking dimensions of the model
// Arguments:
// length = length of the ruler. Default 100
// width = width of the ruler. Default: size of the largest unit division
// thickness = thickness of the ruler. Default: 1
// depth = the depth of mark subdivisions. Default: 3
// labels = draw numeric labels for depths where labels are larger than 1. Default: false
// pipscale = width scale of the pips relative to the next size up. Default: 1/3
// maxscale = log10 of the maximum width divisions to display. Default: based on input length
// colors = colors to use for the ruler, a list of two values. Default: `["black","white"]`
// alpha = transparency value. Default: 1.0
// unit = unit to mark. Scales the ruler marks to a different length. Default: 1
// inch = set to true for a ruler scaled to inches (assuming base dimension is mm). Default: false
// Examples:
// ruler(100,depth=3);
// ruler(100,depth=3,labels=true);
// ruler(27);
// ruler(27,maxscale=0);
// ruler(100,pipscale=3/4,depth=2);
// ruler(100,width=2,depth=2);
// Example: Metric vs Imperial
// ruler(12,width=50,inch=true,labels=true,maxscale=0);
// fwd(50)ruler(300,width=50,labels=true);
module ruler(length=100, width=undef, thickness=1, depth=3, labels=false, pipscale=1/3, maxscale=undef, colors=["black","white"], alpha=1.0, unit=1, inch=false, anchor=ALLNEG, spin=0, orient=UP)
{
inchfactor = 25.4;
assert(depth<=5, "Cannot render scales smaller than depth=5");
assert(len(colors)==2, "colors must contain a list of exactly two colors.");
length = inch ? inchfactor * length : length;
unit = inch ? inchfactor*unit : unit;
maxscale = is_def(maxscale)? maxscale : floor(log(length/unit-EPSILON));
scales = unit * [for(logsize = [maxscale:-1:maxscale-depth+1]) pow(10,logsize)];
echo(scales=scales);
widthfactor = (1-pipscale) / (1-pow(pipscale,depth));
width = default(width, scales[0]);
widths = width * widthfactor * [for(logsize = [0:-1:-depth+1]) pow(pipscale,-logsize)];
offsets = concat([0],cumsum(widths));
orient_and_anchor([length,width,thickness], anchor=anchor, spin=spin, orient=orient, chain=true) {
translate([-length/2, -width/2, 0])
for(i=[0:1:len(scales)-1]){
count = ceil(length/scales[i]);
fontsize = 0.5*min(widths[i], scales[i]/ceil(log(count*scales[i]/unit)));
back(offsets[i])
xspread(scales[i], n=count, sp=[0,0,0])
union(){
actlen = ($idx<count-1) || approx(length%scales[i],0) ? scales[i] : length % scales[i];
color(colors[$idx%2], alpha=alpha) {
w = i>0 ? quantup(widths[i],1/1024) : widths[i]; // What is the i>0 test supposed to do here?
cube([quantup(actlen,1/1024),quantup(w,1/1024),thickness], anchor=FRONT+LEFT);
}
mark = i == 0 && $idx % 10 == 0 && $idx != 0 ? 0 :
i == 0 && $idx % 10 == 9 && $idx != count-1 ? 1 :
$idx % 10 == 4 ? 1 :
$idx % 10 == 5 ? 0 :
-1;
flip = 1-mark*2;
if (mark >= 0){
marklength = min(widths[i]/2, scales[i]*2);
markwidth = marklength*0.4;
translate([mark*scales[i],widths[i]])
color(colors[1-$idx%2], alpha=alpha)
linear_extrude(height=thickness+scales[i]/100, convexity=2, center=true)
polygon(scale([flip*markwidth, marklength],p=[[0,0], [1, -1], [0,-0.9]]));
}
if (labels && scales[i]/unit+EPSILON >= 1)
color(colors[($idx+1)%2], alpha=alpha)
linear_extrude(height=thickness+scales[i]/100, convexity=2, center=true)
back(scales[i]*.02)
text(text=str( $idx * scales[i] / unit), size=fontsize, halign="left", valign="baseline");
}
}
children();
}
}
// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap // vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap