Current File : //usr/share/doc/python3-freetype/examples/glyph-monochrome.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------------
#
# FreeType high-level python API - Copyright 2011-2015 Nicolas P. Rougier
# Distributed under the terms of the new BSD license.
#
# -----------------------------------------------------------------------------
'''
Glyph bitmap monochrome rendring
'''
from freetype import *
def bits(x):
data = []
for i in range(8):
data.insert(0, int((x & 1) == 1))
x = x >> 1
return data
if __name__ == '__main__':
import numpy
import matplotlib.pyplot as plt
face = Face('./Vera.ttf')
face.set_char_size( 48*64 )
face.load_char('S', FT_LOAD_RENDER |
FT_LOAD_TARGET_MONO )
bitmap = face.glyph.bitmap
width = face.glyph.bitmap.width
rows = face.glyph.bitmap.rows
pitch = face.glyph.bitmap.pitch
data = []
for i in range(bitmap.rows):
row = []
for j in range(bitmap.pitch):
row.extend(bits(bitmap.buffer[i*bitmap.pitch+j]))
data.extend(row[:bitmap.width])
Z = numpy.array(data).reshape(bitmap.rows, bitmap.width)
plt.imshow(Z, interpolation='nearest', cmap=plt.cm.gray, origin='lower')
plt.show()
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