def render_path(self, pathid):
path = self.pathd[pathid]
if path.antialiased:
renderer = self.renderer
scanline = self.scanline
render_scanlines = agg.render_scanlines_rgba
else:
renderer = self.rendererbin
scanline = self.scanlinebin
render_scanlines = agg.render_scanlines_bin_rgba
affine = self.adisplay * path.affine
#print 'display affine:\n', self.adisplay
#print 'path affine:\n', path.affine
#print 'product affine:\n', affine
aggaffine = agg.trans_affine(*affine.vec6)
transpath = agg.conv_transform_path(path.agg_path, aggaffine)
if path.facecolor is not None:
#print 'render path', path.facecolor, path.agg_facecolor
self.rasterizer.add_path(transpath)
renderer.color_rgba8(path.agg_facecolor)
render_scanlines(self.rasterizer, scanline, renderer)
if path.color is not None:
stroke = agg.conv_stroke_transpath(transpath)
stroke.width(path.linewidth)
self.rasterizer.add_path(stroke)
renderer.color_rgba8(path.agg_color)
render_scanlines(self.rasterizer, scanline, renderer)
def render_path(self, pathid):
path = self.pathd[pathid]
if path.antialiased:
renderer = self.renderer
scanline = self.scanline
render_scanlines = agg.render_scanlines_rgba
else:
renderer = self.rendererbin
scanline = self.scanlinebin
render_scanlines = agg.render_scanlines_bin_rgba
affine = self.adisplay * path.affine
# print 'display affine:\n', self.adisplay
# print 'path affine:\n', path.affine
# print 'product affine:\n', affine
aggaffine = agg.trans_affine(*affine.vec6)
transpath = agg.conv_transform_path(path.agg_path, aggaffine)
if path.facecolor is not None:
# print 'render path', path.facecolor, path.agg_facecolor
self.rasterizer.add_path(transpath)
renderer.color_rgba8(path.agg_facecolor)
render_scanlines(self.rasterizer, scanline, renderer)
if path.color is not None:
stroke = agg.conv_stroke_transpath(transpath)
stroke.width(path.linewidth)
self.rasterizer.add_path(stroke)
renderer.color_rgba8(path.agg_color)
render_scanlines(self.rasterizer, scanline, renderer)
return path
width, height = 300,300
fname = os.path.join(matplotlib.get_data_path(), 'fonts/ttf/Vera.ttf')
font = FT2Font(fname)
glyph = font.load_char(ord('y'))
path = glyph_to_agg_path(glyph)
curve = agg.conv_curve_path(path)
scaling = agg.trans_affine_scaling(20,20)
translation = agg.trans_affine_translation(4,4)
rotation = agg.trans_affine_rotation(3.1415926)
mtrans = translation*scaling # cannot use this as a temporary
tpath = agg.conv_transform_path(path, mtrans)
curve = agg.conv_curve_trans(tpath)
stride = width*4
buffer = agg.buffer(width, height, stride)
rbuf = agg.rendering_buffer()
rbuf.attachb(buffer)
red = agg.rgba8(255,0,0,255)
blue = agg.rgba8(0,0,255,255)
white = agg.rgba8(255,255,255,255)
pf = agg.pixel_format_rgba(rbuf)
rbase = agg.renderer_base_rgba(pf)
agg.render_scanlines_rgba(rasterizer, scanline, renderer); ## Transforming a path path = agg.path_storage() path.move_to(0,0) path.line_to(1,0) path.line_to(1,1) path.line_to(0,1) path.close_polygon() rotation = agg.trans_affine_rotation(pi/4) scaling = agg.trans_affine_scaling(30,30) translation = agg.trans_affine_translation(300,300) trans = rotation*scaling*translation transpath = agg.conv_transform_path(path, trans) stroke = agg.conv_stroke_transpath(transpath) stroke.width(2.0) rasterizer.add_path(stroke) renderer.color_rgba8( black ) agg.render_scanlines_rgba(rasterizer, scanline, renderer); ## Converting a transformed path to a curve path = agg.path_storage() path.move_to(0,0) path.curve3(1,0) path.curve3(1,1) path.curve3(0,1) path.close_polygon() rotation = agg.trans_affine_rotation(pi/4)
