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SF.net SVN: matplotlib: [4689] branches/transforms
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From: <md...@us...> - 2007-12-10 16:21:40
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Revision: 4689
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4689&view=rev
Author: mdboom
Date: 2007-12-10 08:21:36 -0800 (Mon, 10 Dec 2007)
Log Message:
-----------
Merged revisions 4683-4688 via svnmerge from
http://matplotlib.svn.sf.net/svnroot/matplotlib/trunk/matplotlib
........
r4684 | mdboom | 2007-12-10 10:23:08 -0500 (Mon, 10 Dec 2007) | 2 lines
Fix variable name.
........
r4685 | mdboom | 2007-12-10 10:34:29 -0500 (Mon, 10 Dec 2007) | 2 lines
Fix syntax for pre-Python 2.5
........
r4686 | mdboom | 2007-12-10 11:15:30 -0500 (Mon, 10 Dec 2007) | 4 lines
Support draw_path (importantly for ellipses) in Pdf, Svg and Cairo
backends.
Fix SVG text rendering bug.
........
Modified Paths:
--------------
branches/transforms/CHANGELOG
branches/transforms/lib/matplotlib/backends/backend_cairo.py
branches/transforms/lib/matplotlib/backends/backend_pdf.py
branches/transforms/lib/matplotlib/backends/backend_svg.py
branches/transforms/lib/matplotlib/font_manager.py
branches/transforms/lib/matplotlib/patches.py
Property Changed:
----------------
branches/transforms/
Property changes on: branches/transforms
___________________________________________________________________
Name: svnmerge-integrated
- /trunk/matplotlib:1-4682
+ /trunk/matplotlib:1-4688
Modified: branches/transforms/CHANGELOG
===================================================================
--- branches/transforms/CHANGELOG 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/CHANGELOG 2007-12-10 16:21:36 UTC (rev 4689)
@@ -1,3 +1,9 @@
+2007-12-10 Fix SVG text rendering bug.
+
+2007-12-10 Increase accuracy of circle and ellipse drawing by using an 8-piece
+ bezier approximation, rather than a 4-piece one. Fix PDF, SVG and
+ Cairo backends so they can draw paths (meaning ellipses as well).
+
2007-12-07 Issue a warning when drawing an image on a non-linear axis. - MGD
2007-12-06 let widgets.Cursor initialize to the lower x and y bounds
Modified: branches/transforms/lib/matplotlib/backends/backend_cairo.py
===================================================================
--- branches/transforms/lib/matplotlib/backends/backend_cairo.py 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/lib/matplotlib/backends/backend_cairo.py 2007-12-10 16:21:36 UTC (rev 4689)
@@ -34,6 +34,7 @@
backend_version = cairo.version
del _version_required
+from matplotlib import agg
from matplotlib.backend_bases import RendererBase, GraphicsContextBase,\
FigureManagerBase, FigureCanvasBase
from matplotlib.cbook import enumerate, izip, is_string_like
@@ -117,6 +118,7 @@
ctx.stroke()
+<<<<<<< .working
#@staticmethod
def convert_path(ctx, tpath):
for points, code in tpath.iter_segments():
@@ -133,12 +135,48 @@
elif code == Path.CLOSEPOLY:
ctx.close_path()
convert_path = staticmethod(convert_path)
+=======
+ def draw_path(self, gc, rgbFace, path):
+ ctx = gc.ctx
+ ctx.new_path()
+>>>>>>> .merge-right.r4686
+<<<<<<< .working
def draw_path(self, gc, path, transform, rgbFace=None):
if len(path.vertices) > 18980:
raise ValueError("The Cairo backend can not draw paths longer than 18980 points.")
+=======
+ while 1:
+ code, xp, yp = path.vertex()
+ yp = self.height - yp
+
+ if code == agg.path_cmd_stop:
+ ctx.close_path()
+ break
+ elif code == agg.path_cmd_move_to:
+ ctx.move_to(xp, yp)
+ elif code == agg.path_cmd_line_to:
+ ctx.line_to(xp, yp)
+ elif code == agg.path_cmd_curve3:
+ _, xp1, yp1 = path.vertex()
+ yp1 = self.height - yp1
+ ctx.curve_to(xp, yp, xp, yp, xp1, yp1)
+ elif code == agg.path_cmd_curve4:
+ _, xp1, yp1 = path.vertex()
+ yp1 = self.height - yp1
+ _, xp2, yp2 = path.vertex()
+ yp2 = self.height - yp2
+ ctx.curve_to(xp, yp, xp1, yp1, xp2, yp2)
+ elif code == agg.path_cmd_end_poly:
+ ctx.close_path()
+ self._fill_and_stroke(ctx, rgbFace)
+
+ def draw_arc(self, gc, rgbFace, x, y, width, height, angle1, angle2,
+ rotation):
+ if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
+>>>>>>> .merge-right.r4686
ctx = gc.ctx
transform = transform + \
Affine2D().scale(1.0, -1.0).translate(0, self.height)
Modified: branches/transforms/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- branches/transforms/lib/matplotlib/backends/backend_pdf.py 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/lib/matplotlib/backends/backend_pdf.py 2007-12-10 16:21:36 UTC (rev 4689)
@@ -1211,7 +1211,97 @@
stat_key, (realpath, Set()))
used_characters[1].update(set)
+<<<<<<< .working
def draw_image(self, x, y, im, bbox, clippath=None, clippath_trans=None):
+=======
+ def draw_arc(self, gcEdge, rgbFace, x, y, width, height,
+ angle1, angle2, rotation):
+ """
+ Draw an arc using GraphicsContext instance gcEdge, centered at x,y,
+ with width and height and angles from 0.0 to 360.0
+ 0 degrees is at 3-o'clock, rotated by `rotation` degrees
+ positive angles are anti-clockwise
+
+ If the color rgbFace is not None, fill the arc with it.
+ """
+ # source: agg_bezier_arc.cpp in agg23
+
+ def arc_to_bezier(cx, cy, rx, ry, angle1, sweep, rotation):
+ halfsweep = sweep / 2.0
+ x0, y0 = cos(halfsweep), sin(halfsweep)
+ tx = (1.0 - x0) * 4.0/3.0;
+ ty = y0 - tx * x0 / y0;
+ px = x0, x0+tx, x0+tx, x0
+ py = -y0, -ty, ty, y0
+ sn, cs = sin(angle1 + halfsweep), cos(angle1 + halfsweep)
+ result = [ (rx * (pxi * cs - pyi * sn),
+ ry * (pxi * sn + pyi * cs))
+ for pxi, pyi in zip(px, py) ]
+ result = [ (cx + cos(rotation)*x - sin(rotation)*y,
+ cy + sin(rotation)*x + cos(rotation)*y)
+ for x, y in result ]
+ return reduce(lambda x, y: x + y, result)
+
+ epsilon = 0.01
+ angle1 *= pi/180.0
+ angle2 *= pi/180.0
+ rotation *= pi/180.0
+ sweep = angle2 - angle1
+ angle1 = angle1 % (2*pi)
+ sweep = min(max(-2*pi, sweep), 2*pi)
+
+ if sweep < 0.0:
+ sweep, angle1, angle2 = -sweep, angle2, angle1
+ bp = [ pi/2.0 * i
+ for i in range(4)
+ if pi/2.0 * i < sweep-epsilon ]
+ bp.append(sweep)
+ subarcs = [ arc_to_bezier(x, y, width/2.0, height/2.0,
+ bp[i], bp[i+1]-bp[i], rotation)
+ for i in range(len(bp)-1) ]
+
+ self.check_gc(gcEdge, rgbFace)
+ self.file.output(subarcs[0][0], subarcs[0][1], Op.moveto)
+ for arc in subarcs:
+ self.file.output(*(arc[2:] + (Op.curveto,)))
+
+ self.file.output(self.gc.close_and_paint())
+
+ def draw_path(self, gc, rgbFace, path):
+ self.check_gc(gc, rgbFace)
+
+ cmds = []
+
+ while 1:
+ code, xp, yp = path.vertex()
+
+ if code == agg.path_cmd_stop:
+ cmds.append(Op.closepath)
+ break
+ elif code == agg.path_cmd_move_to:
+ cmds.extend([xp, yp, Op.moveto])
+ elif code == agg.path_cmd_line_to:
+ cmds.extend([xp, yp, Op.lineto])
+ elif code == agg.path_cmd_curve3:
+ cmds.extend([xp, yp])
+ cmds.extend([xp, yp])
+ cmds.extend(path.vertex()[1:])
+ cmds.append(Op.curveto)
+ elif code == agg.path_cmd_curve4:
+ cmds.extend([xp, yp])
+ cmds.extend(path.vertex()[1:])
+ cmds.extend(path.vertex()[1:])
+ cmds.append(Op.curveto)
+ elif code == agg.path_cmd_end_poly:
+ cmds.append(Op.closepath)
+ self.file.output(*cmds)
+ self.file.output(self.gc.paint())
+
+ def get_image_magnification(self):
+ return self.image_magnification
+
+ def draw_image(self, x, y, im, bbox):
+>>>>>>> .merge-right.r4686
#print >>sys.stderr, "draw_image called"
# MGDTODO: Support clippath here
Modified: branches/transforms/lib/matplotlib/backends/backend_svg.py
===================================================================
--- branches/transforms/lib/matplotlib/backends/backend_svg.py 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/lib/matplotlib/backends/backend_svg.py 2007-12-10 16:21:36 UTC (rev 4689)
@@ -2,6 +2,7 @@
import os, codecs, base64, tempfile, urllib, gzip
+from matplotlib import agg
from matplotlib import verbose, __version__, rcParams
from matplotlib.backend_bases import RendererBase, GraphicsContextBase,\
FigureManagerBase, FigureCanvasBase
@@ -139,6 +140,49 @@
def close_group(self, s):
self._svgwriter.write('</g>\n')
+<<<<<<< .working
+=======
+ def draw_path(self, gc, rgbFace, path):
+ cmd = []
+
+ while 1:
+ code, xp, yp = path.vertex()
+ yp = self.height - yp
+
+ if code == agg.path_cmd_stop:
+ cmd.append('z') # Hack, path_cmd_end_poly not found
+ break
+ elif code == agg.path_cmd_move_to:
+ cmd.append('M%g %g' % (xp, yp))
+ elif code == agg.path_cmd_line_to:
+ cmd.append('L%g %g' % (xp, yp))
+ elif code == agg.path_cmd_curve3:
+ verts = [xp, yp]
+ verts.extent(path.vertex()[1:])
+ verts[-1] = self.height - verts[-1]
+ cmd.append('Q%g %g %g %g' % tuple(verts))
+ elif code == agg.path_cmd_curve4:
+ verts = [xp, yp]
+ verts.extend(path.vertex()[1:])
+ verts[-1] = self.height - verts[-1]
+ verts.extend(path.vertex()[1:])
+ verts[-1] = self.height - verts[-1]
+ cmd.append('C%g %g %g %g %g %g'%tuple(verts))
+ elif code == agg.path_cmd_end_poly:
+ cmd.append('z')
+
+ path_data = "".join(cmd)
+ self._draw_svg_element("path", 'd="%s"' % path_data, gc, rgbFace)
+
+ def draw_arc(self, gc, rgbFace, x, y, width, height, angle1, angle2, rotation):
+ """
+ Ignores angles for now
+ """
+ details = 'cx="%s" cy="%s" rx="%s" ry="%s" transform="rotate(%1.1f %s %s)"' % \
+ (x, self.height-y, width/2.0, height/2.0, -rotation, x, self.height-y)
+ self._draw_svg_element('ellipse', details, gc, rgbFace)
+
+>>>>>>> .merge-right.r4686
def option_image_nocomposite(self):
"""
if svg.image_noscale is True, compositing multiple images into one is prohibited
@@ -327,7 +371,7 @@
svg.append(' x="%s"' %
(currx * (self.FONT_SCALE / fontsize)))
svg.append('/>\n')
- currx += (glyph.linearHoriAdvance / 65536.0)
+ currx += (glyph.linearHoriAdvance / 65536.0) / (self.FONT_SCALE / fontsize)
svg.append('</g>\n')
svg = ''.join(svg)
else:
Modified: branches/transforms/lib/matplotlib/font_manager.py
===================================================================
--- branches/transforms/lib/matplotlib/font_manager.py 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/lib/matplotlib/font_manager.py 2007-12-10 16:21:36 UTC (rev 4689)
@@ -109,9 +109,10 @@
else:
user = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER, MSFolders)
try:
- return _winreg.QueryValueEx(user, 'Fonts')[0]
- except OSError:
- pass # Fall through to default
+ try:
+ return _winreg.QueryValueEx(user, 'Fonts')[0]
+ except OSError:
+ pass # Fall through to default
finally:
_winreg.CloseKey(user)
return os.path.join(os.environ['WINDIR'], 'Fonts')
Modified: branches/transforms/lib/matplotlib/patches.py
===================================================================
--- branches/transforms/lib/matplotlib/patches.py 2007-12-10 16:17:42 UTC (rev 4688)
+++ branches/transforms/lib/matplotlib/patches.py 2007-12-10 16:21:36 UTC (rev 4689)
@@ -820,49 +820,6 @@
"""
A scale-free ellipse
"""
-<<<<<<< .working
-=======
- MAGIC = 0.2652031
- SQRT2 = npy.sqrt(0.5)
- MAGIC45 = npy.sqrt((MAGIC*MAGIC) / 2.0)
-
- circle = npy.array(
- [[0.0, -1.0],
-
- [MAGIC, -1.0],
- [SQRT2-MAGIC45, -SQRT2-MAGIC45],
- [SQRT2, -SQRT2],
-
- [SQRT2+MAGIC45, -SQRT2+MAGIC45],
- [1.0, -MAGIC],
- [1.0, 0.0],
-
- [1.0, MAGIC],
- [SQRT2+MAGIC45, SQRT2-MAGIC45],
- [SQRT2, SQRT2],
-
- [SQRT2-MAGIC45, SQRT2+MAGIC45],
- [MAGIC, 1.0],
- [0.0, 1.0],
-
- [-MAGIC, 1.0],
- [-SQRT2+MAGIC45, SQRT2+MAGIC45],
- [-SQRT2, SQRT2],
-
- [-SQRT2-MAGIC45, SQRT2-MAGIC45],
- [-1.0, MAGIC],
- [-1.0, 0.0],
-
- [-1.0, -MAGIC],
- [-SQRT2-MAGIC45, -SQRT2+MAGIC45],
- [-SQRT2, -SQRT2],
-
- [-SQRT2+MAGIC45, -SQRT2-MAGIC45],
- [-MAGIC, -1.0],
- [0.0, -1.0]],
- npy.float_)
-
->>>>>>> .merge-right.r4679
def __str__(self):
return "Ellipse(%d,%d;%dx%d)"%(self.center[0],self.center[1],self.width,self.height)
@@ -898,17 +855,10 @@
def get_patch_transform(self):
return self._patch_transform
-<<<<<<< .working
def contains(self,ev):
if ev.x is None or ev.y is None: return False,{}
x, y = self.get_transform().inverted().transform_point((ev.x, ev.y))
return (x*x + y*y) <= 1.0, {}
-=======
- xcenter = self.convert_xunits(xcenter)
- width = self.convert_xunits(width)
- ycenter = self.convert_yunits(ycenter)
- height = self.convert_xunits(height)
->>>>>>> .merge-right.r4679
def _get_center(self):
return self._center
@@ -932,105 +882,6 @@
angle = property(_get_angle, _set_angle)
-<<<<<<< .working
-=======
- rtheta = angle*npy.pi/180.
- R = npy.array([
- [npy.cos(rtheta), -npy.sin(rtheta)],
- [npy.sin(rtheta), npy.cos(rtheta)],
- ])
-
-
- x, y = npy.dot(R, npy.array([x, y]))
- x += xcenter
- y += ycenter
-
- return zip(x, y)
-
- def draw(self, renderer):
- if not self.get_visible(): return
- #renderer.open_group('patch')
- gc = renderer.new_gc()
- gc.set_foreground(self._edgecolor)
- gc.set_linewidth(self._linewidth)
- gc.set_alpha(self._alpha)
- gc.set_antialiased(self._antialiased)
- self._set_gc_clip(gc)
-
- gc.set_capstyle('projecting')
-
- if not self.fill or self._facecolor is None: rgbFace = None
- else: rgbFace = colors.colorConverter.to_rgb(self._facecolor)
-
- if self._hatch:
- gc.set_hatch(self._hatch )
-
-
- if not hasattr(renderer, 'draw_path'):
- mpl.verbose.report('patches.Ellipse renderer does not support path drawing; falling back on vertex approximation for nonlinear transformation')
- renderer.draw_polygon(gc, rgbFace, self.get_verts())
- return
-
-
- x, y = self.center
- x = self.convert_xunits(x)
- y = self.convert_yunits(y)
- w = self.convert_xunits(self.width)/2.
- h = self.convert_yunits(self.height)/2.
-
- theta = self.angle * npy.pi/180.
- T = npy.array([
- [1, 0, x],
- [0, 1, y],
- [0, 0, 1]])
-
-
-
-
- S = npy.array([
- [w, 0, 0],
- [0, h, 0],
- [0, 0, 1]])
-
-
-
- # rotate by theta
- R = npy.array([
- [npy.cos(theta), -npy.sin(theta), 0],
- [npy.sin(theta), npy.cos(theta), 0],
- [0, 0, 1]])
-
- # transform unit circle into ellipse
- E = npy.dot(T, npy.dot(R, S))
-
-
- # Apply the display affine
- sx, b, c, sy, tx, ty = self.get_transform().as_vec6_val()
-
- # display coords
- D = npy.array([
- [sx, b, tx],
- [c, sy, ty],
- [0, 0, 1]], npy.float_)
-
- M = npy.dot(D,E)
-
- C = npy.ones((3, len(self.circle)))
- C[0:2,:] = self.circle.T
-
- ellipse = npy.dot(M, C).T[:,:2]
-
- path = agg.path_storage()
- path.move_to(*ellipse[0])
- for i in range(1, 25, 3):
- path.curve4(*ellipse[i:i+3].flat)
- path.close_polygon()
-
- renderer.draw_path(gc, rgbFace, path)
-
-
->>>>>>> .merge-right.r4679
-
class Circle(Ellipse):
"""
A circle patch
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