def createCharTexture(self, char, mode=None):
"""Create character's texture/bitmap as a Numeric array w/ width and height
This uses PyGame and Numeric to attempt to create
an anti-aliased luminance texture-map of the given
character and return it as (data, width, height).
"""
try:
letter_render = self.font.render(char, 1, (255, 255, 255))
except:
traceback.print_exc()
return None, font.CharacterMetrics(char, 0, 0)
else:
# XXX Figure out why this rotate appears to be required :(
letter_render = transform.rotate(letter_render, -90.0)
colour = surfarray.array3d(letter_render)
alpha = surfarray.array_alpha(letter_render)
colour[:, :, 1] = alpha
colour = colour[:, :, :2]
colour = contiguous(colour).astype('B')
# This produces what looks like garbage, but displays correctly
colour.shape = (
colour.shape[1],
colour.shape[0],
) + colour.shape[2:]
return colour, font.CharacterMetrics(
char,
colour.shape[0],
colour.shape[1],
)
def createChar(self, char, mode=None):
"""Create the single-character display list"""
glyph = self.font.getGlyph(char)
if glyph:
metrics = font.CharacterMetrics(
char,
glyph.width / self.getScale(),
glyph.height / self.getScale(),
)
list = glGenLists(1)
if list == 0:
raise RuntimeError(
"""Unable to generate display list for %s""" % (self, ))
glNewList(list, GL_COMPILE)
try:
try:
if glyph.outlines and glyph.contours:
self.renderGlyph(glyph, mode=mode)
else:
glyph.renderAdvance(self.getScale())
except Exception:
glDeleteLists(list, 1)
raise
finally:
glEndList()
return list, metrics
else:
return None, None
def _createSingleChar(self, wgldc, char, base=None):
"""Create the single-character (polygonal) display list
Note:
This is actually used by both the bitmap and
polygonal geometry versions, though the metrics
returned are rather less than useful for bitmap :(
"""
if base is None:
base = glGenLists(1)
metrics = GLYPHMETRICSFLOAT()
try:
wglUseFontOutlinesW(
wgldc, # the win32-specific OpenGL Context handle
ord(char), # character to create
1, # create a single character
base, # display list to fill
self.deviation,
self.extrusion,
WGL_FONT_POLYGONS,
metrics, # metrics float structure to be filled
)
except:
print """couldn't get outline for character""", repr(char)
realMetrics = font.CharacterMetrics(
char,
metrics.gmfCellIncX,
metrics.gmfptGlyphOrigin.y + metrics.gmfBlackBoxY,
)
return base, realMetrics
def createCharTexture(self, char, mode=None):
"""Create character's texture/bitmap as a Numeric array w/ width and height
This uses PyGame and Numeric to attempt to create
an anti-aliased luminance texture-map of the given
character and return it as (data, width, height).
"""
if __debug__:
log.info("""Creating texture for %r""", char)
dc = wx.MemoryDC()
bm = wx.EmptyBitmap(1, 1)
dc.SelectObject(bm)
dc.SetFont(self.font)
width, height = dc.GetTextExtent(char)
bitmap = wx.EmptyBitmap(width, height)
dc.SelectObject(bitmap)
#~ dc.SetBackgroundMode( wx.TRANSPARENT )
dc.SetBackgroundMode(wx.SOLID)
dc.SetTextForeground('#ffffff')
dc.SetTextBackground('#000000')
dc.DrawText(char, 0, 0)
dc.SelectObject(wx.NullBitmap)
image = wx.ImageFromBitmap(bitmap)
#~ import pdb
#~ pdb.set_trace()
#~ directory = '~/bitmaps'
#~ directory = os.path.expanduser( directory )
#~ image.SaveFile( '%s/char%s.png'%(directory,ord(char)), wx.BITMAP_TYPE_PNG)
data = image.GetData()
data = frombuffer(data, 'b')
data = reshape(data, (height, width, 3))
data = data[::-1, :, :2]
assert shape(data) == (
height, width,
2), """Data array has changed shape is %s should be %s""" % (
shape(data), (height, width, 3))
data = data.tobytes()
#~ print 'data', repr(data)
return data, font.CharacterMetrics(
char,
width,
height,
)
def createChar(self, char, mode=None):
"""Create the single-character display list
"""
metrics = font.CharacterMetrics(
char, GLUT.glutBitmapWidth(self.specifier, ord(char)),
self.charHeight)
list = glGenLists(1)
glNewList(list, GL_COMPILE)
try:
try:
if metrics.char != ' ':
GLUT.glutBitmapCharacter(self.specifier, ord(char))
else:
glBitmap(0, 0, 0, 0, metrics.width, 0, None)
except Exception:
glDeleteLists(list, 1)
list = None
finally:
glEndList()
return list, metrics
