Turn off anti-aliasing when auto-snapping.

mdboom · mdboom · commit 1beccd91202f · 2008-12-15T14:18:03.000Z
svn path=/branches/v0_98_5_maint/; revision=6609
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,3 +1,5 @@
+2008-12-15 Fix anti-aliasing when auto-snapping - MGD
+
 2008-12-15 Fix grid lines not moving correctly during pan and zoom - MGD
 
 2008-12-12 Fixed warning in hist() with numpy 1.2 - MM
diff --git a/src/_backend_agg.cpp b/src/_backend_agg.cpp
@@ -355,7 +355,7 @@ RendererAgg::_get_rgba_face(const Py::Object& rgbFace, double alpha) {
 }
 
 template<class Path>
-bool should_snap(const GCAgg& gc, Path& path, const agg::trans_affine& trans) {
+bool should_snap(GCAgg& gc, Path& path, const agg::trans_affine& trans) {
   // If this contains only straight horizontal or vertical lines, it should be
   // quantized to the nearest pixels
   double x0, y0, x1, y1;
@@ -393,6 +393,7 @@ bool should_snap(const GCAgg& gc, Path& path, const agg::trans_affine& trans) {
     }
 
     path.rewind(0);
+    gc.isaa = false;
     return true;
   case GCAgg::SNAP_FALSE:
     return false;

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+2008-12-15 Fix anti-aliasing when auto-snapping - MGD`
	`2`	`+`
`1`	`3`	`2008-12-15 Fix grid lines not moving correctly during pan and zoom - MGD`
`2`	`4`
`3`	`5`	`2008-12-12 Fixed warning in hist() with numpy 1.2 - MM`
Original file line number	Diff line number	Diff line change
`@@ -355,7 +355,7 @@ RendererAgg::_get_rgba_face(const Py::Object& rgbFace, double alpha) {`
`355`	`355`	`}`
`356`	`356`
`357`	`357`	`template<class Path>`
`358`		`-bool should_snap(const GCAgg& gc, Path& path, const agg::trans_affine& trans) {`
	`358`	`+bool should_snap(GCAgg& gc, Path& path, const agg::trans_affine& trans) {`
`359`	`359`	`// If this contains only straight horizontal or vertical lines, it should be`
`360`	`360`	`// quantized to the nearest pixels`
`361`	`361`	`double x0, y0, x1, y1;`
`@@ -393,6 +393,7 @@ bool should_snap(const GCAgg& gc, Path& path, const agg::trans_affine& trans) {`
`393`	`393`	`}`
`394`	`394`
`395`	`395`	`path.rewind(0);`
	`396`	`+ gc.isaa = false;`
`396`	`397`	`return true;`
`397`	`398`	`case GCAgg::SNAP_FALSE:`
`398`	`399`	`return false;`