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-rw-r--r--third_party/freetype-py/examples/glyph-vector.py91
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diff --git a/third_party/freetype-py/examples/glyph-vector.py b/third_party/freetype-py/examples/glyph-vector.py
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+# -----------------------------------------------------------------------------
+#
+# FreeType high-level python API - Copyright 2011 Nicolas P. Rougier
+# Distributed under the terms of the new BSD license.
+#
+# -----------------------------------------------------------------------------
+'''
+Show how to access glyph outline description.
+'''
+from freetype import *
+
+if __name__ == '__main__':
+ import numpy
+ import matplotlib.pyplot as plt
+ from matplotlib.path import Path
+ import matplotlib.patches as patches
+
+ face = Face('./Vera.ttf')
+ face.set_char_size( 48*64 )
+ face.load_char('S')
+ slot = face.glyph
+
+ outline = slot.outline
+ points = numpy.array(outline.points, dtype=[('x',float), ('y',float)])
+ x, y = points['x'], points['y']
+
+ figure = plt.figure(figsize=(8,10))
+ axis = figure.add_subplot(111)
+ #axis.scatter(points['x'], points['y'], alpha=.25)
+ start, end = 0, 0
+
+ VERTS, CODES = [], []
+ # Iterate over each contour
+ for i in range(len(outline.contours)):
+ end = outline.contours[i]
+ points = outline.points[start:end+1]
+ points.append(points[0])
+ tags = outline.tags[start:end+1]
+ tags.append(tags[0])
+
+ segments = [ [points[0],], ]
+ for j in range(1, len(points) ):
+ segments[-1].append(points[j])
+ if tags[j] & (1 << 0) and j < (len(points)-1):
+ segments.append( [points[j],] )
+ verts = [points[0], ]
+ codes = [Path.MOVETO,]
+ for segment in segments:
+ if len(segment) == 2:
+ verts.extend(segment[1:])
+ codes.extend([Path.LINETO])
+ elif len(segment) == 3:
+ verts.extend(segment[1:])
+ codes.extend([Path.CURVE3, Path.CURVE3])
+ else:
+ verts.append(segment[1])
+ codes.append(Path.CURVE3)
+ for i in range(1,len(segment)-2):
+ A,B = segment[i], segment[i+1]
+ C = ((A[0]+B[0])/2.0, (A[1]+B[1])/2.0)
+ verts.extend([ C, B ])
+ codes.extend([ Path.CURVE3, Path.CURVE3])
+ verts.append(segment[-1])
+ codes.append(Path.CURVE3)
+ VERTS.extend(verts)
+ CODES.extend(codes)
+ start = end+1
+
+
+ # Draw glyph lines
+ path = Path(VERTS, CODES)
+ glyph = patches.PathPatch(path, facecolor='.75', lw=1)
+
+ # Draw "control" lines
+ for i, code in enumerate(CODES):
+ if code == Path.CURVE3:
+ CODES[i] = Path.LINETO
+ path = Path(VERTS, CODES)
+ patch = patches.PathPatch(path, ec='.5', fill=False, ls='dashed', lw=1 )
+
+ axis.add_patch(patch)
+ axis.add_patch(glyph)
+
+ axis.set_xlim(x.min()-100, x.max()+100)
+ plt.xticks([])
+ axis.set_ylim(y.min()-100, y.max()+100)
+ plt.yticks([])
+ plt.show()
+
+
+