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-rw-r--r--basegfx/source/polygon/b2dlinegeometry.cxx128
-rw-r--r--basegfx/source/polygon/b2dpolygontools.cxx11
-rw-r--r--basegfx/source/polygon/b2dpolygontriangulator.cxx27
3 files changed, 129 insertions, 37 deletions
diff --git a/basegfx/source/polygon/b2dlinegeometry.cxx b/basegfx/source/polygon/b2dlinegeometry.cxx
index ca4b88238383..78f569970df3 100644
--- a/basegfx/source/polygon/b2dlinegeometry.cxx
+++ b/basegfx/source/polygon/b2dlinegeometry.cxx
@@ -30,6 +30,7 @@
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <com/sun/star/drawing/LineCap.hpp>
#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
+#include <basegfx/polygon/b2dpolygontriangulator.hxx>
namespace basegfx
{
@@ -337,7 +338,8 @@ namespace basegfx
bool bStartRound,
bool bEndRound,
bool bStartSquare,
- bool bEndSquare)
+ bool bEndSquare,
+ basegfx::triangulator::B2DTriangleVector* pTriangles)
{
// create polygon for edge
// Unfortunately, while it would be geometrically correct to not add
@@ -566,6 +568,15 @@ namespace basegfx
}
}
+ if(nullptr != pTriangles)
+ {
+ const basegfx::triangulator::B2DTriangleVector aResult(
+ basegfx::triangulator::triangulate(
+ aBezierPolygon));
+ pTriangles->insert(pTriangles->end(), aResult.begin(), aResult.end());
+ aBezierPolygon.clear();
+ }
+
// return
return aBezierPolygon;
}
@@ -664,6 +675,15 @@ namespace basegfx
// close and return
aEdgePolygon.setClosed(true);
+ if(nullptr != pTriangles)
+ {
+ const basegfx::triangulator::B2DTriangleVector aResult(
+ basegfx::triangulator::triangulate(
+ aEdgePolygon));
+ pTriangles->insert(pTriangles->end(), aResult.begin(), aResult.end());
+ aEdgePolygon.clear();
+ }
+
return aEdgePolygon;
}
}
@@ -676,7 +696,8 @@ namespace basegfx
const B2DPoint& rPoint,
double fHalfLineWidth,
B2DLineJoin eJoin,
- double fMiterMinimumAngle)
+ double fMiterMinimumAngle,
+ basegfx::triangulator::B2DTriangleVector* pTriangles)
{
OSL_ENSURE(fHalfLineWidth > 0.0, "createAreaGeometryForJoin: LineWidth too small (!)");
OSL_ENSURE(eJoin != B2DLineJoin::NONE, "createAreaGeometryForJoin: B2DLineJoin::NONE not allowed (!)");
@@ -703,9 +724,19 @@ namespace basegfx
{
case B2DLineJoin::Miter :
{
- aEdgePolygon.append(aEndPoint);
- aEdgePolygon.append(rPoint);
- aEdgePolygon.append(aStartPoint);
+ if(nullptr != pTriangles)
+ {
+ pTriangles->emplace_back(
+ aEndPoint,
+ rPoint,
+ aStartPoint);
+ }
+ else
+ {
+ aEdgePolygon.append(aEndPoint);
+ aEdgePolygon.append(rPoint);
+ aEdgePolygon.append(aStartPoint);
+ }
// Look for the cut point between start point along rTangentPrev and
// end point along rTangentEdge. -rTangentEdge should be used, but since
@@ -718,7 +749,18 @@ namespace basegfx
if(fCutPos != 0.0)
{
const B2DPoint aCutPoint(aStartPoint + (rTangentPrev * fCutPos));
- aEdgePolygon.append(aCutPoint);
+
+ if(nullptr != pTriangles)
+ {
+ pTriangles->emplace_back(
+ aStartPoint,
+ aCutPoint,
+ aEndPoint);
+ }
+ else
+ {
+ aEdgePolygon.append(aCutPoint);
+ }
}
break;
@@ -744,14 +786,27 @@ namespace basegfx
if(aBow.count() > 1)
{
- // #i101491#
- // use the original start/end positions; the ones from bow creation may be numerically
- // different due to their different creation. To guarantee good merging quality with edges
- // and edge roundings (and to reduce point count)
- aEdgePolygon = aBow;
- aEdgePolygon.setB2DPoint(0, aStartPoint);
- aEdgePolygon.setB2DPoint(aEdgePolygon.count() - 1, aEndPoint);
- aEdgePolygon.append(rPoint);
+ if(nullptr != pTriangles)
+ {
+ for(sal_uInt32 a(0); a < aBow.count() - 1; a++)
+ {
+ pTriangles->emplace_back(
+ 0 == a ? aStartPoint : aBow.getB2DPoint(a),
+ rPoint,
+ aBow.count() - 1 == a + 1 ? aEndPoint : aBow.getB2DPoint(a + 1));
+ }
+ }
+ else
+ {
+ // #i101491#
+ // use the original start/end positions; the ones from bow creation may be numerically
+ // different due to their different creation. To guarantee good merging quality with edges
+ // and edge roundings (and to reduce point count)
+ aEdgePolygon = aBow;
+ aEdgePolygon.setB2DPoint(0, aStartPoint);
+ aEdgePolygon.setB2DPoint(aEdgePolygon.count() - 1, aEndPoint);
+ aEdgePolygon.append(rPoint);
+ }
break;
}
@@ -762,9 +817,19 @@ namespace basegfx
}
default: // B2DLineJoin::Bevel
{
- aEdgePolygon.append(aEndPoint);
- aEdgePolygon.append(rPoint);
- aEdgePolygon.append(aStartPoint);
+ if(nullptr != pTriangles)
+ {
+ pTriangles->emplace_back(
+ aEndPoint,
+ rPoint,
+ aStartPoint);
+ }
+ else
+ {
+ aEdgePolygon.append(aEndPoint);
+ aEdgePolygon.append(rPoint);
+ aEdgePolygon.append(aStartPoint);
+ }
break;
}
@@ -786,7 +851,8 @@ namespace basegfx
css::drawing::LineCap eCap,
double fMaxAllowedAngle,
double fMaxPartOfEdge,
- double fMiterMinimumAngle)
+ double fMiterMinimumAngle,
+ basegfx::triangulator::B2DTriangleVector* pTriangles)
{
if(fMaxAllowedAngle > F_PI2)
{
@@ -895,7 +961,8 @@ namespace basegfx
aEdge.getStartPoint(),
fHalfLineWidth,
eJoin,
- fMiterMinimumAngle));
+ fMiterMinimumAngle,
+ pTriangles));
}
else if(aOrientation == B2VectorOrientation::Negative)
{
@@ -911,7 +978,8 @@ namespace basegfx
aEdge.getStartPoint(),
fHalfLineWidth,
eJoin,
- fMiterMinimumAngle));
+ fMiterMinimumAngle,
+ pTriangles));
}
}
@@ -929,7 +997,8 @@ namespace basegfx
bFirst && eCap == css::drawing::LineCap_ROUND,
bLast && eCap == css::drawing::LineCap_ROUND,
bFirst && eCap == css::drawing::LineCap_SQUARE,
- bLast && eCap == css::drawing::LineCap_SQUARE));
+ bLast && eCap == css::drawing::LineCap_SQUARE,
+ pTriangles));
}
else
{
@@ -940,7 +1009,8 @@ namespace basegfx
false,
false,
false,
- false));
+ false,
+ pTriangles));
}
// prepare next step
@@ -958,10 +1028,22 @@ namespace basegfx
else
{
// point count, but no edge count -> single point
- aRetval.append(
+ const basegfx::B2DPolygon aCircle(
createPolygonFromCircle(
aCandidate.getB2DPoint(0),
fHalfLineWidth));
+
+ if(nullptr != pTriangles)
+ {
+ const basegfx::triangulator::B2DTriangleVector aResult(
+ basegfx::triangulator::triangulate(
+ aCircle));
+ pTriangles->insert(pTriangles->end(), aResult.begin(), aResult.end());
+ }
+ else
+ {
+ aRetval.append(aCircle);
+ }
}
return aRetval;
diff --git a/basegfx/source/polygon/b2dpolygontools.cxx b/basegfx/source/polygon/b2dpolygontools.cxx
index b5d2abf7e4be..27bfa56d8ced 100644
--- a/basegfx/source/polygon/b2dpolygontools.cxx
+++ b/basegfx/source/polygon/b2dpolygontools.cxx
@@ -2133,7 +2133,9 @@ namespace basegfx
return ((fCrossA > 0.0) == (fCrossB > 0.0));
}
- void addTriangleFan(const B2DPolygon& rCandidate, B2DPolygon& rTarget)
+ void addTriangleFan(
+ const B2DPolygon& rCandidate,
+ triangulator::B2DTriangleVector& rTarget)
{
const sal_uInt32 nCount(rCandidate.count());
@@ -2145,9 +2147,10 @@ namespace basegfx
for(sal_uInt32 a(2); a < nCount; a++)
{
const B2DPoint aCurrent(rCandidate.getB2DPoint(a));
- rTarget.append(aStart);
- rTarget.append(aLast);
- rTarget.append(aCurrent);
+ rTarget.emplace_back(
+ aStart,
+ aLast,
+ aCurrent);
// prepare next
aLast = aCurrent;
diff --git a/basegfx/source/polygon/b2dpolygontriangulator.cxx b/basegfx/source/polygon/b2dpolygontriangulator.cxx
index ab97419144d4..c24a78f579b8 100644
--- a/basegfx/source/polygon/b2dpolygontriangulator.cxx
+++ b/basegfx/source/polygon/b2dpolygontriangulator.cxx
@@ -110,7 +110,7 @@ namespace basegfx
EdgeEntry* mpList;
EdgeEntries maStartEntries;
std::vector< std::unique_ptr<EdgeEntry> > maNewEdgeEntries;
- B2DPolygon maResult;
+ triangulator::B2DTriangleVector maResult;
void handleClosingEdge(const B2DPoint& rStart, const B2DPoint& rEnd);
bool CheckPointInTriangle(EdgeEntry* pEdgeA, EdgeEntry const * pEdgeB, const B2DPoint& rTestPoint);
@@ -119,7 +119,7 @@ namespace basegfx
public:
explicit Triangulator(const B2DPolyPolygon& rCandidate);
- const B2DPolygon& getResult() const { return maResult; }
+ const triangulator::B2DTriangleVector& getResult() const { return maResult; }
};
void Triangulator::handleClosingEdge(const B2DPoint& rStart, const B2DPoint& rEnd)
@@ -203,9 +203,10 @@ namespace basegfx
void Triangulator::createTriangle(const B2DPoint& rA, const B2DPoint& rB, const B2DPoint& rC)
{
- maResult.append(rA);
- maResult.append(rB);
- maResult.append(rC);
+ maResult.emplace_back(
+ rA,
+ rB,
+ rC);
}
// consume as long as there are edges
@@ -370,9 +371,9 @@ namespace basegfx
{
namespace triangulator
{
- B2DPolygon triangulate(const B2DPolygon& rCandidate)
+ B2DTriangleVector triangulate(const B2DPolygon& rCandidate)
{
- B2DPolygon aRetval;
+ B2DTriangleVector aRetval;
// subdivide locally (triangulate does not work with beziers), remove double and neutral points
B2DPolygon aCandidate(rCandidate.areControlPointsUsed() ? utils::adaptiveSubdivideByAngle(rCandidate) : rCandidate);
@@ -382,7 +383,10 @@ namespace basegfx
if(aCandidate.count() == 2)
{
// candidate IS a triangle, just append
- aRetval.append(aCandidate);
+ aRetval.emplace_back(
+ aCandidate.getB2DPoint(0),
+ aCandidate.getB2DPoint(1),
+ aCandidate.getB2DPoint(2));
}
else if(aCandidate.count() > 2)
{
@@ -396,6 +400,7 @@ namespace basegfx
// polygon is concave.
const B2DPolyPolygon aCandPolyPoly(aCandidate);
Triangulator aTriangulator(aCandPolyPoly);
+
aRetval = aTriangulator.getResult();
}
}
@@ -403,9 +408,9 @@ namespace basegfx
return aRetval;
}
- B2DPolygon triangulate(const B2DPolyPolygon& rCandidate)
+ B2DTriangleVector triangulate(const B2DPolyPolygon& rCandidate)
{
- B2DPolygon aRetval;
+ B2DTriangleVector aRetval;
// subdivide locally (triangulate does not work with beziers)
B2DPolyPolygon aCandidate(rCandidate.areControlPointsUsed() ? utils::adaptiveSubdivideByAngle(rCandidate) : rCandidate);
@@ -414,11 +419,13 @@ namespace basegfx
{
// single polygon -> single polygon triangulation
const B2DPolygon aSinglePolygon(aCandidate.getB2DPolygon(0));
+
aRetval = triangulate(aSinglePolygon);
}
else
{
Triangulator aTriangulator(aCandidate);
+
aRetval = aTriangulator.getResult();
}
generated by cgit (git 2.34.1) at 2024-07-04 13:38:15 +0000