diff options
| author | Jens-Heiner Rechtien <hr@openoffice.org> | 2006-08-11 16:41:08 +0000 |
|---|---|---|
| committer | Jens-Heiner Rechtien <hr@openoffice.org> | 2006-08-11 16:41:08 +0000 |
| commit | d53a6b5b71834bacabf906a929a7f9bed1ef5e9f (patch) | |
| tree | 37808f1298fd43806e759d6ec68fc372bbcbe4cf /basegfx/source/polygon/b2dpolygonclipper.cxx | |
| parent | dbd7f9185a45fb188de8a4fc89da9ff56e58690c (diff) | |
INTEGRATION: CWS svp01 (1.2.18); FILE MERGED
2006/05/31 14:06:25 thb 1.2.18.1: #i65904# Extracted cohen-sutherland rect clip tooling into exported header (needed for basebmp)
Diffstat (limited to 'basegfx/source/polygon/b2dpolygonclipper.cxx')
| -rw-r--r-- | basegfx/source/polygon/b2dpolygonclipper.cxx | 37 |
1 files changed, 15 insertions, 22 deletions
diff --git a/basegfx/source/polygon/b2dpolygonclipper.cxx b/basegfx/source/polygon/b2dpolygonclipper.cxx index eac953e2e809..4658aff4c5af 100644 --- a/basegfx/source/polygon/b2dpolygonclipper.cxx +++ b/basegfx/source/polygon/b2dpolygonclipper.cxx @@ -4,9 +4,9 @@ * * $RCSfile: b2dpolygonclipper.cxx,v $ * - * $Revision: 1.2 $ + * $Revision: 1.3 $ * - * last change: $Author: kz $ $Date: 2005-11-02 13:57:47 $ + * last change: $Author: hr $ $Date: 2006-08-11 17:41:08 $ * * The Contents of this file are made available subject to * the terms of GNU Lesser General Public License Version 2.1. @@ -69,6 +69,10 @@ #include <basegfx/curve/b2dcubicbezier.hxx> #endif +#ifndef _BGFX_TOOLS_RECTCLIPTOOLS_HXX +#include <basegfx/tools/rectcliptools.hxx> +#endif + ////////////////////////////////////////////////////////////////////////////// namespace basegfx @@ -582,17 +586,6 @@ namespace basegfx sal_uInt32 clipmask; // clipping mask, e.g. 1000 1000 }; - inline sal_uInt32 getClipFlags( const ::basegfx::B2DPoint& rV, - const ::basegfx::B2DRectangle& rR ) - { - // maxY | minY | maxX | minX - sal_uInt32 clip = (rV.getX() < rR.getMinX()) << 0; - clip |= (rV.getX() > rR.getMaxX()) << 1; - clip |= (rV.getY() < rR.getMinY()) << 2; - clip |= (rV.getY() > rR.getMaxY()) << 3; - return clip; - } - /* * * polygon clipping rules (straight out of Foley and Van Dam) @@ -606,10 +599,10 @@ namespace basegfx * */ sal_uInt32 scissorLineSegment( ::basegfx::B2DPoint *in_vertex, // input buffer - sal_uInt32 in_count, // number of verts in input buffer - ::basegfx::B2DPoint *out_vertex, // output buffer - scissor_plane *pPlane, // scissoring plane - const ::basegfx::B2DRectangle &rR ) // clipping rectangle + sal_uInt32 in_count, // number of verts in input buffer + ::basegfx::B2DPoint *out_vertex, // output buffer + scissor_plane *pPlane, // scissoring plane + const ::basegfx::B2DRectangle &rR ) // clipping rectangle { ::basegfx::B2DPoint *curr; ::basegfx::B2DPoint *next; @@ -625,7 +618,7 @@ namespace basegfx next = &in_vertex[(i+1)%in_count]; // perform clipping judgement & mask against current plane. - sal_uInt32 clip = pPlane->clipmask & ((getClipFlags(*curr,rR)<<4)|getClipFlags(*next,rR)); + sal_uInt32 clip = pPlane->clipmask & ((getCohenSutherlandClipFlags(*curr,rR)<<4)|getCohenSutherlandClipFlags(*next,rR)); if(clip==0) { // both verts are inside out_vertex[out_count++] = *next; @@ -690,19 +683,19 @@ namespace basegfx sp[0].nx = +1.0; sp[0].ny = +0.0; sp[0].d = -(rRange.getMinX()); - sp[0].clipmask = 0x11; // 0001 0001 + sp[0].clipmask = (RectClipFlags::LEFT << 4) | RectClipFlags::LEFT; // 0001 0001 sp[1].nx = -1.0; sp[1].ny = +0.0; sp[1].d = +(rRange.getMaxX()); - sp[1].clipmask = 0x22; // 0010 0010 + sp[1].clipmask = (RectClipFlags::RIGHT << 4) | RectClipFlags::RIGHT; // 0010 0010 sp[2].nx = +0.0; sp[2].ny = +1.0; sp[2].d = -(rRange.getMinY()); - sp[2].clipmask = 0x44; // 0100 0100 + sp[2].clipmask = (RectClipFlags::TOP << 4) | RectClipFlags::TOP; // 0100 0100 sp[3].nx = +0.0; sp[3].ny = -1.0; sp[3].d = +(rRange.getMaxY()); - sp[3].clipmask = 0x88; // 1000 1000 + sp[3].clipmask = (RectClipFlags::BOTTOM << 4) | RectClipFlags::BOTTOM; // 1000 1000 // retrieve the number of vertices of the triangulated polygon const sal_uInt32 nVertexCount = rCandidate.count(); |