[Plplot-cvs] SF.net SVN: plplot:[10161] trunk/drivers/cairo.c

[<hba...@us...>]

Revision: 10161
          http://plplot.svn.sourceforge.net/plplot/?rev=10161&view=rev
Author:   hbabcock
Date:     2009-07-19 01:59:08 +0000 (Sun, 19 Jul 2009)

Log Message:
-----------
Units are PI/2 not 2/PI. Also change to using the PLplot constant PI instead of 3.14159

Modified Paths:
--------------
    trunk/drivers/cairo.c

Modified: trunk/drivers/cairo.c
===================================================================
--- trunk/drivers/cairo.c	2009-07-19 01:54:46 UTC (rev 10160)
+++ trunk/drivers/cairo.c	2009-07-19 01:59:08 UTC (rev 10161)
@@ -332,7 +332,7 @@
 		       (double)pls->cmap0[0].r/255.0,
 		       (double)pls->cmap0[0].g/255.0,
 		       (double)pls->cmap0[0].b/255.0);
-  cairo_fill(aStream->cairoContext);  
+  cairo_fill(aStream->cairoContext);
 }
 
 /*---------------------------------------------------------------------
@@ -620,7 +620,7 @@
   /* Set up the clipping region if we are doing text clipping */
   if(aStream->text_clipping){
     cairo_save(aStream->cairoContext);
-    diorot_rad = pls->diorot * 2.0/3.14159;
+    diorot_rad = pls->diorot * PI/2.0;
     rotate_cairo_surface(pls,
 			 cos(diorot_rad),
 			 sin(diorot_rad),
@@ -647,7 +647,7 @@
   /* Extract rotation angle and shear from the PLplot tranformation matrix.
      Compute sines and cosines of the angles as an optimization. */
   plRotationShear(args->xform, &rotation, &shear, &stride);
-  rotation -= pls->diorot * 3.14159 / 2.0;
+  rotation -= pls->diorot * PI / 2.0;
   cos_rot = cos(rotation);
   sin_rot = sin(rotation);
   cos_shear = cos(shear);
@@ -754,7 +754,7 @@
   /* Extract rotation angle and shear from the PLplot tranformation matrix.
      Compute sines and cosines of the angles as an optimization. */
   plRotationShear(args->xform, &rotation, &shear, &stride);
-  rotation -= pls->diorot * 3.14159 / 2.0;
+  rotation -= pls->diorot * PI / 2.0;
   cos_rot = cos(rotation);
   sin_rot = sin(rotation);
   cos_shear = cos(shear);


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