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-rw-r--r--third_party/freetype-py/examples/glyph-color.py94
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diff --git a/third_party/freetype-py/examples/glyph-color.py b/third_party/freetype-py/examples/glyph-color.py
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--- a/third_party/freetype-py/examples/glyph-color.py
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-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-# -----------------------------------------------------------------------------
-#
-# FreeType high-level python API - Copyright 2011 Nicolas P. Rougier
-# Distributed under the terms of the new BSD license.
-#
-# -----------------------------------------------------------------------------
-'''
-Glyph colored rendering (with outline)
-'''
-from freetype import *
-
-if __name__ == '__main__':
- import numpy as np
- import matplotlib.pyplot as plt
-
- face = Face('./Vera.ttf')
- face.set_char_size( 96*64 )
- RGBA = [('R',float), ('G',float), ('B',float), ('A',float)]
-
- # Outline
- flags = FT_LOAD_DEFAULT | FT_LOAD_NO_BITMAP
- face.load_char('S', flags )
- slot = face.glyph
- glyph = slot.get_glyph()
- stroker = Stroker( )
- stroker.set(64, FT_STROKER_LINECAP_ROUND, FT_STROKER_LINEJOIN_ROUND, 0 )
- glyph.stroke( stroker )
- blyph = glyph.to_bitmap(FT_RENDER_MODE_NORMAL, Vector(0,0))
- bitmap = blyph.bitmap
- width, rows, pitch = bitmap.width, bitmap.rows, bitmap.pitch
- top, left = blyph.top, blyph.left
- data = []
- for i in range(rows):
- data.extend(bitmap.buffer[i*pitch:i*pitch+width])
- Z = np.array(data).reshape(rows, width)/255.0
- O = np.zeros((rows,width), dtype=RGBA)
- O['A'] = Z
- O['R'] = 1
- O['G'] = 0
- O['B'] = 0
-
- # Plain
- flags = FT_LOAD_RENDER
- face.load_char('S', flags)
- F = np.zeros((rows,width), dtype=RGBA)
- Z = np.zeros((rows, width))
- bitmap = face.glyph.bitmap
- width, rows, pitch = bitmap.width, bitmap.rows, bitmap.pitch
- top, left = face.glyph.bitmap_top, face.glyph.bitmap_left
- dy = blyph.top - face.glyph.bitmap_top
- dx = face.glyph.bitmap_left - blyph.left
- data = []
- for i in range(rows):
- data.extend(bitmap.buffer[i*pitch:i*pitch+width])
- Z[dx:dx+rows,dy:dy+width] = np.array(data).reshape(rows, width)/255.
- F['R'] = 1
- F['G'] = 1
- F['B'] = 0
- F['A'] = Z
-
- # Combine outline and plain
- R1,G1,B1,A1 = O['R'],O['G'],O['B'],O['A']
- R2,G2,B2,A2 = F['R'],F['G'],F['B'],F['A']
- Z = np.zeros(O.shape, dtype=RGBA)
- Z['R'] = (A1 * R1 + A2 * (1 - A1) * R2)
- Z['G'] = (A1 * G1 + A2 * (1 - A1) * G2)
- Z['B'] = (A1 * B1 + A2 * (1 - A1) * B2)
- Z['A'] = (A1 + A2 * (1 - A1))
-
-
- # Draw
- plt.figure(figsize=(12,5))
-
- plt.subplot(1,3,1)
- plt.title('Plain')
- plt.xticks([]), plt.yticks([])
- I = F.view(dtype=float).reshape(O.shape[0],O.shape[1],4)
- plt.imshow(I, interpolation='nearest', origin='lower')
-
- plt.subplot(1,3,2)
- plt.title('Outline')
- plt.xticks([]), plt.yticks([])
- I = O.view(dtype=float).reshape(O.shape[0],O.shape[1],4)
- plt.imshow(I, interpolation='nearest', origin='lower')
-
- plt.subplot(1,3,3)
- plt.title('Outline + Plain')
- plt.xticks([]), plt.yticks([])
- I = Z.view(dtype=float).reshape(O.shape[0],O.shape[1],4)
- plt.imshow(I, interpolation='nearest', origin='lower')
-
- plt.show()