ofxSDFFont

openFrameworks addon for drawing fonts using signed distance functions (SDF)

usage

// load a .fnt file
font.load("Comic Sans.fnt", 60);
// draw a string
font.draw("Hello World", ofVec2f(20, 60));

how to generate a SDF font

1. download Hiero (https://github.com/libgdx/libgdx/wiki/Hiero) from https://libgdx.badlogicgames.com/tools.html
2. run runnable-hiero.jar
3. select a font face
4. from the file menu, select “Save BMFont files …”
5. drag the .fnt and .png files to your OF application’s data folder

known issues

1. ofxSDFFont was written for 0.9.8 and has not been tested in OF 0.10.0
2. ofxSDFFont only runs with the programmable renderer (see examples/simpleexample/src/main.cpp)
3. ofxSDFFont does currently work with fnt files containing multiple png files

explanation & credits

ofxSDFFont is based on MapBox.js example by Konstantin Käfer https://mapbox.s3.amazonaws.com/kkaefer/sdf/index.html
How SDF Fonts work https://www.mapbox.com/blog/text-signed-distance-fields/