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authorElton Chung <elton@layerjet.com>2012-02-20 00:30:16 +0800
committerMichael Meeks <michael.meeks@suse.com>2012-02-20 12:08:10 +0000
commitdbff99a60ec5268c92f1404cb01754de9186c2e8 (patch)
tree20236b586ab80745426b4e51f0b8df56bdfcb0d0 /basegfx/source/tools
parent9846e25d94d6029f3a0726ae35e96db342506c80 (diff)
Remove unused code
Diffstat (limited to 'basegfx/source/tools')
-rw-r--r--basegfx/source/tools/liangbarsky.cxx57
1 files changed, 0 insertions, 57 deletions
diff --git a/basegfx/source/tools/liangbarsky.cxx b/basegfx/source/tools/liangbarsky.cxx
index be2d5e04a429..6b89e85498ce 100644
--- a/basegfx/source/tools/liangbarsky.cxx
+++ b/basegfx/source/tools/liangbarsky.cxx
@@ -69,63 +69,6 @@ namespace basegfx
return true;
}
}
-
- // see Foley/vanDam, pp. 122 for the Liang-Barsky line
- // clipping algorithm
- bool liangBarskyClip2D( ::basegfx::B2DPoint& io_rStart,
- ::basegfx::B2DPoint& io_rEnd,
- const ::basegfx::B2DRange& rClipRect )
- {
- const double nDX( io_rEnd.getX() - io_rStart.getX() );
- const double nDY( io_rEnd.getY() - io_rStart.getY() );
-
- if( ::basegfx::fTools::equalZero( nDX ) &&
- ::basegfx::fTools::equalZero( nDY ) )
- {
- return rClipRect.isInside( io_rStart );
- }
- else
- {
- double nTE( 0.0 );
- double nTL( 1.0 );
- if( liangBarskyClipT(nDX, rClipRect.getMinX() - io_rStart.getX(),
- nTE, nTL ) ) // inside wrt. left edge
- {
- if( liangBarskyClipT(-nDX, io_rStart.getX() - rClipRect.getMaxX(),
- nTE, nTL ) ) // inside wrt. right edge
- {
- if( liangBarskyClipT(nDY, rClipRect.getMinY() - io_rStart.getY(),
- nTE, nTL ) ) // inside wrt. bottom edge
- {
- if( liangBarskyClipT(-nDY, io_rStart.getY() - rClipRect.getMaxY(),
- nTE, nTL ) ) // inside wrt. top edge
- {
- // compute actual intersection points,
- // if nTL has changed
- if( nTL < 1.0 )
- {
- io_rEnd.setX( io_rStart.getX() + nTL*nDX );
- io_rEnd.setY( io_rStart.getY() + nTL*nDY );
- }
-
- // compute actual intersection points,
- // if nTE has changed
- if( nTE > 0.0 )
- {
- io_rStart.setX( io_rStart.getX() + nTE*nDX );
- io_rStart.setY( io_rStart.getY() + nTE*nDY );
- }
-
- // line is (at least partially) visible
- return true;
- }
- }
- }
- }
- }
-
- return false;
- }
}
}