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Fix for using clipper library

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- it doesn't fix my donut problem - still need to fix degenerate nodes.
This commit is contained in:
PSadrozinski 2011-10-11 19:24:59 -04:00 committed by Christian Schmitt
parent 33d88b8c27
commit 59b534616f
1 changed files with 22 additions and 42 deletions
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38
src/Lib/Polygon/polygon.cxx
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@ -27,8 +27,8 @@
//
// which clipping lib to use?
#define CLIP_GPC
//#define CLIP_CLIPPER
//#define CLIP_GPC
#define CLIP_CLIPPER
#ifdef CLIP_GPC
extern "C" {
@ -499,8 +499,8 @@ TGPolygon polygon_clip( clip_op poly_op, const TGPolygon& subject, const TGPolyg
Polygons clipper_clip;
make_clipper_poly( clip, &clipper_clip );
//ExPolygons clipper_result;
Polygons clipper_result;
ExPolygons clipper_result;
//Polygons clipper_result;
ClipType op;
if ( poly_op == POLY_DIFF ) {
@ -524,16 +524,16 @@ TGPolygon polygon_clip( clip_op poly_op, const TGPolygon& subject, const TGPolyg
int res_contour = 0;
if (c.Execute(op, clipper_result, pftEvenOdd, pftEvenOdd))
{
#if 0 // ExPolygons
for (int i=0; i<clipper_result.size(); i++)
{
struct ExPolygon* pg = &clipper_result[i];
IntPoint ip;
// Get the boundary contour
for (int j = 0; j < pg->outer.size(); j++)
{
p = Point3D( pg->outer[j].X, pg->outer[j].Y, -9999.0 );
result.add_node(res_contour, p);
ip = IntPoint( pg->outer[j].X, pg->outer[j].Y );
result.add_node(res_contour, MakeTGPoint(ip));
}
result.set_hole_flag(res_contour, 0);
res_contour++;
@ -543,33 +543,13 @@ TGPolygon polygon_clip( clip_op poly_op, const TGPolygon& subject, const TGPolyg
{
for (int k = 0; k < pg->holes[j].size(); k++)
{
p = Point3D( pg->holes[j].at(k).X, pg->holes[j].at(k).Y, -9999.0 );
result.add_node(res_contour, p);
ip = IntPoint( pg->holes[j].at(k).X, pg->holes[j].at(k).Y );
result.add_node(res_contour, MakeTGPoint(ip));
}
result.set_hole_flag(res_contour, 1);
res_contour++;
}
}
#endif
for (int i=0; i<clipper_result.size(); i++)
{
Polygon* pg = &clipper_result[i];
IntPoint ip;
for (int j = 0; j < pg->size(); j++)
{
ip = IntPoint( pg->at(j).X, pg->at(j).Y );
result.add_node(i, MakeTGPoint(ip));
}
if (i==0)
{
result.set_hole_flag(i, 0);
}
else
{
result.set_hole_flag(i, 1);
}
}
}
return result;