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Add center option to path_text

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Adrian Mariano 2021-10-02 12:03:00 -04:00
parent 044b635bed
commit 5e0537fc31
1 changed files with 7 additions and 3 deletions
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shapes3d.scad
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@ -2112,6 +2112,7 @@ function _cut_interp(pathcut, path, data) =
// font = font to use
// ---
// lettersize = scalar or array giving size of letters
// center = center text on the path instead of starting at the first point. Default: false
// offset = distance to shift letters "up" (towards the reader). Not allowed for 2D path. Default: 0
// normal = direction or list of directions pointing towards the reader of the text. Not allowed for 2D path.
// top = direction or list of directions pointing toward the top of the text
@ -2173,7 +2174,7 @@ function _cut_interp(pathcut, path, data) =
// path = zrot(-120,p=concat(arc(100, r=25, angle=[0,90]), back(50,p=arc(100, r=25, angle=[268, 180]))));
// color("red")stroke(path,width=.2);
// path_text(path, "A shorter example", size=5, lettersize=5/1.2, font="Courier");
module path_text(path, text, font, size, thickness, lettersize, offset=0, reverse=false, normal, top, textmetrics=false)
module path_text(path, text, font, size, thickness, lettersize, offset=0, reverse=false, normal, top, center=false, textmetrics=false)
{
dummy2=assert(is_path(path,[2,3]),"Must supply a 2d or 3d path")
assert(num_defined([normal,top])<=1, "Cannot define both \"normal\" and \"top\"");
@ -2200,9 +2201,12 @@ module path_text(path, text, font, size, thickness, lettersize, offset=0, revers
: textmetrics ? [for(letter=text) let(t=textmetrics(letter, font=font, size=size)) t.advance[0]]
: assert(false, "textmetrics disabled: Must specify letter size");
dummy1 = assert(sum(lsize)<=path_length(path),"Path is too short for the text");
textlength = sum(lsize);
dummy1 = assert(textlength<=path_length(path),"Path is too short for the text");
start = center ? (path_length(path) - textlength)/2 : 0;
pts = _path_cut_points(path, add_scalar([0, each cumsum(lsize)],lsize[0]/2), direction=true);
pts = _path_cut_points(path, add_scalar([0, each cumsum(lsize)],start+lsize[0]/2), direction=true);
usernorm = is_def(normal);
usetop = is_def(top);