def render_marker(self, markerid):
marker = self.markerd[markerid]
path = marker.path
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
affinelocs = self.adisplay * marker.affine
Nmarkers = marker.locs.shape[0]
Locs = npy.ones((3, Nmarkers))
Locs[0] = marker.locs[:, 0]
Locs[1] = marker.locs[:, 1]
Locs = affinelocs * Locs
dpiscale = self.dpi / 72. # for some reason this is broken
# this will need to be highly optimized and hooked into some
# extension code using cached marker rasters as we now do in
# _backend_agg
pathcodes, pathxy = marker.path.pathdata
pathx = dpiscale * pathxy[:, 0]
pathy = dpiscale * pathxy[:, 1]
Npath = len(pathcodes)
XY = npy.ones((Npath, 2))
for xv, yv, tmp in Locs.T:
XY[:, 0] = (pathx + xv).astype(int) + 0.5
XY[:, 1] = (pathy + yv).astype(int) + 0.5
pathdata = pathcodes, XY
aggpath = PathPrimitiveAgg.make_agg_path(pathdata)
if path.facecolor is not None:
self.rasterizer.add_path(aggpath)
renderer.color_rgba8(path.agg_facecolor)
render_scanlines(self.rasterizer, scanline, renderer)
if path.color is not None:
stroke = agg.conv_stroke_path(aggpath)
stroke.width(path.linewidth)
self.rasterizer.add_path(stroke)
renderer.color_rgba8(path.agg_color)
render_scanlines(self.rasterizer, scanline, renderer)
def render_marker(self, markerid):
marker = self.markerd[markerid]
path = marker.path
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
affinelocs = self.adisplay * marker.affine
Nmarkers = marker.locs.shape[0]
Locs = npy.ones((3, Nmarkers))
Locs[0] = marker.locs[:, 0]
Locs[1] = marker.locs[:, 1]
Locs = affinelocs * Locs
dpiscale = self.dpi / 72.0 # for some reason this is broken
# this will need to be highly optimized and hooked into some
# extension code using cached marker rasters as we now do in
# _backend_agg
pathcodes, pathxy = marker.path.pathdata
pathx = dpiscale * pathxy[:, 0]
pathy = dpiscale * pathxy[:, 1]
Npath = len(pathcodes)
XY = npy.ones((Npath, 2))
for xv, yv, tmp in Locs.T:
XY[:, 0] = (pathx + xv).astype(int) + 0.5
XY[:, 1] = (pathy + yv).astype(int) + 0.5
pathdata = pathcodes, XY
aggpath = PathPrimitiveAgg.make_agg_path(pathdata)
if path.facecolor is not None:
self.rasterizer.add_path(aggpath)
renderer.color_rgba8(path.agg_facecolor)
render_scanlines(self.rasterizer, scanline, renderer)
if path.color is not None:
stroke = agg.conv_stroke_path(aggpath)
stroke.width(path.linewidth)
self.rasterizer.add_path(stroke)
renderer.color_rgba8(path.agg_color)
render_scanlines(self.rasterizer, scanline, renderer)
renderer = agg.renderer_scanline_aa_solid_rgba(rbase); renderer.color_rgba8( red ) rasterizer = agg.rasterizer_scanline_aa() scanline = agg.scanline_p8() ## A polygon path path = agg.path_storage() path.move_to(10,10) path.line_to(100,100) path.line_to(200,200) path.line_to(100,200) path.close_polygon() # stroke it stroke = agg.conv_stroke_path(path) stroke.width(3.0) rasterizer.add_path(stroke) agg.render_scanlines_rgba(rasterizer, scanline, renderer); ## A curved path path = agg.path_storage() path.move_to(200,10) path.line_to(350,50) path.curve3(150,200) path.curve3(100,70) path.close_polygon() curve = agg.conv_curve_path(path) # fill it rasterizer.add_path(curve)
