matplotlib-checkins Mailing List for matplotlib

Revision: 4950
 http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4950&view=rev
Author: jouni
Date: 2008年02月10日 07:21:56 -0800 (2008年2月10日)
Log Message:
-----------
Fixed a problem with square roots in the pdf backend with usetex.
Modified Paths:
--------------
 trunk/matplotlib/CHANGELOG
 trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG	2008年02月08日 21:09:33 UTC (rev 4949)
+++ trunk/matplotlib/CHANGELOG	2008年02月10日 15:21:56 UTC (rev 4950)
@@ -1,3 +1,6 @@
+2008年02月10日 Fixed a problem with square roots in the pdf backend with
+ usetex. - JKS
+
 2008年02月08日 Fixed minor __str__ bugs so getp(gca()) works. - JKS
 
 2008年02月05日 Added getters for title, xlabel, ylabel, as requested
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py	2008年02月08日 21:09:33 UTC (rev 4949)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py	2008年02月10日 15:21:56 UTC (rev 4950)
@@ -35,7 +35,7 @@
 from matplotlib.ft2font import FT2Font, FIXED_WIDTH, ITALIC, LOAD_NO_SCALE, \
 LOAD_NO_HINTING, KERNING_UNFITTED
 from matplotlib.mathtext import MathTextParser
-from matplotlib.transforms import Bbox, BboxBase
+from matplotlib.transforms import Affine2D, Bbox, BboxBase
 from matplotlib.path import Path
 from matplotlib import ttconv
 
@@ -1331,14 +1331,6 @@
 page = iter(dvi).next()
 dvi.close()
 
- if angle == 0: # avoid rounding errors in common case
- def mytrans(x1, y1):
- return x+x1, y+y1
- else:
- def mytrans(x1, y1, x=x, y=y, a=angle / 180.0 * pi):
- return x + cos(a)*x1 - sin(a)*y1, \
- y + sin(a)*x1 + cos(a)*y1
-
 # Gather font information and do some setup for combining
 # characters into strings.
 oldfont, seq = None, []
@@ -1354,7 +1346,6 @@
 seq += [['font', pdfname, dvifont.size]]
 oldfont = dvifont
 seq += [['text', x1, y1, [chr(glyph)], x1+width]]
- seq += [('end',)]
 
 # Find consecutive text strings with constant x coordinate and
 # combine into a sequence of strings and kerns, or just one
@@ -1374,7 +1365,10 @@
 continue
 i += 1
 
- # Now do the actual output.
+ # Create a transform to map the dvi contents to the canvas.
+ mytrans = Affine2D().rotate_deg(angle).translate(x, y)
+
+ # Output the text.
 self.check_gc(gc, gc._rgb)
 self.file.output(Op.begin_text)
 curx, cury, oldx, oldy = 0, 0, 0, 0
@@ -1382,7 +1376,7 @@
 if elt[0] == 'font':
 self.file.output(elt[1], elt[2], Op.selectfont)
 elif elt[0] == 'text':
- curx, cury = mytrans(elt[1], elt[2])
+ curx, cury = mytrans.transform((elt[1], elt[2]))
 self._setup_textpos(curx, cury, angle, oldx, oldy)
 oldx, oldy = curx, cury
 if len(elt[3]) == 1:
@@ -1390,20 +1384,20 @@
 else:
 self.file.output(elt[3], Op.showkern)
 else:
- assert elt[0] == 'end'
+ assert False
 self.file.output(Op.end_text)
 
- # Finally output the boxes (used for the variable-length lines
- # in square roots and the like).
+ # Then output the boxes (e.g. variable-length lines of square
+ # roots).
 boxgc = self.new_gc()
 boxgc.copy_properties(gc)
 boxgc.set_linewidth(0)
+ pathops = [Path.MOVETO, Path.LINETO, Path.LINETO, Path.LINETO,
+ Path.CLOSEPOLY]
 for x1, y1, h, w in page.boxes:
- (x1, y1), (x2, y2), (x3, y3), (x4, y4) = \
- mytrans(x1, y1), mytrans(x1+w, y1), \
- mytrans(x1+w, y1+h), mytrans(x1, y1+h)
- self.draw_polygon(boxgc, gc._rgb,
- ((x1,y1), (x2,y2), (x3,y3), (x4,y4)))
+ path = Path([[x1, y1], [x1+w, y1], [x1+w, y1+h], [x1, y1+h],
+ [0,0]], pathops)
+ self.draw_path(boxgc, path, mytrans, gc._rgb)
 
 def encode_string(self, s, fonttype):
 if fonttype == 3:
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