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Pixelly font library for OpenSCAD

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  • 28 downloads

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This is an OpenSCAD library to generate pixelly fonts, mostly based on some PalmOS bitmap fonts from Ron Buelow. There are 29 fonts included.

I used it to make a Minecraft-themed text topper for a birthday cake. The full library code is here -- the downloads for this Thing just include a self-contained demo file.

To use, start with:
include <pixellyfont.scad>
The syntax for the main library call, with defaults indicated, is:
renderString(string,font=font_8x8,halign="left",valign="bottom",invert=false,spacing=1,size=10,pixelScale=1.01,height=0)

string: text to render; only characters included in the CP-1252 character set are supported; other characters will be turned to spaces
font: font to use; the fonts are defined in fontdata.scad
halign: horizontal alignment: "left", "right" or "center"
valign: vertical alignment: "bottom", "top" or "center"
invert: set to true if you want to draw the background instead of the characters
spacing: scale for character spacing
size: height of characters
pixelScale: the scaling to apply to the pixels; if you increase it noticeably above 1, the pixels will join up more, and if you decrease it below 1, you'll get blank space around them
height height to extrude pixels; set to 0 to make pixels 2D

You can also use renderString() as a modifier for a shape. In that case, pixelScale and height are ignored, and instead the shape is used as a pixel. For instance, you can do this to make foreground pixels be large circles and background pixels be small circles:
renderString("abc") circle(d=1);
renderString("abc",invert=true) circle(d=0.1);

If you want to know how much horizontal space text will take up, you can call
getStringWidth(string[,options]) where the available options are the font, spacing and size options that renderString() uses.

If you want to know how many pixels high characters in a font are, call getFontHeight(font). You can then compute the size of an individual pixel as size/getFontHeight(font) where size is the size parameter for renderString().

  • 3D file format: STL

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