diff options
Diffstat (limited to 'basegfx/inc/basegfx')
| -rw-r--r-- | basegfx/inc/basegfx/tools/rectcliptools.hxx | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/basegfx/inc/basegfx/tools/rectcliptools.hxx b/basegfx/inc/basegfx/tools/rectcliptools.hxx index 7e2ff80876ca..c9b36eb3e46d 100644 --- a/basegfx/inc/basegfx/tools/rectcliptools.hxx +++ b/basegfx/inc/basegfx/tools/rectcliptools.hxx @@ -30,6 +30,7 @@ #define _BGFX_TOOLS_RECTCLIPTOOLS_HXX #include <sal/types.h> +#include <basegfx/range/b2ibox.hxx> ////////////////////////////////////////////////////////////////////////////// @@ -65,6 +66,19 @@ namespace basegfx return clip; } + /// Cohen-Sutherland mask calculation - overload for boxes. + template< class Point > inline + sal_uInt32 getCohenSutherlandClipFlags( const Point& rP, + const B2IBox& rB ) + { + // maxY | minY | maxX | minX + sal_uInt32 clip = (rP.getX() < rB.getMinX()) << 0; + clip |= (rP.getX() >= rB.getMaxX()) << 1; + clip |= (rP.getY() < rB.getMinY()) << 2; + clip |= (rP.getY() >= rB.getMaxY()) << 3; + return clip; + } + /** Determine number of clip planes hit by given clip mask This method returns the number of one bits in the four |