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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

64
src/Lib/Polygon/polygon.cxx
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@ -27,8 +27,8 @@
// //
// which clipping lib to use? // which clipping lib to use?
#define CLIP_GPC //#define CLIP_GPC
//#define CLIP_CLIPPER #define CLIP_CLIPPER
#ifdef CLIP_GPC #ifdef CLIP_GPC
extern "C" { extern "C" {
@ -499,8 +499,8 @@ TGPolygon polygon_clip( clip_op poly_op, const TGPolygon& subject, const TGPolyg
Polygons clipper_clip; Polygons clipper_clip;
make_clipper_poly( clip, &clipper_clip ); make_clipper_poly( clip, &clipper_clip );
//ExPolygons clipper_result; ExPolygons clipper_result;
Polygons clipper_result; //Polygons clipper_result;
ClipType op; ClipType op;
if ( poly_op == POLY_DIFF ) { if ( poly_op == POLY_DIFF ) {
@ -524,50 +524,30 @@ TGPolygon polygon_clip( clip_op poly_op, const TGPolygon& subject, const TGPolyg
int res_contour = 0; int res_contour = 0;
if (c.Execute(op, clipper_result, pftEvenOdd, pftEvenOdd)) if (c.Execute(op, clipper_result, pftEvenOdd, pftEvenOdd))
{ {
#if 0 // ExPolygons for (int i=0; i<clipper_result.size(); i++)
for (int i=0; i<clipper_result.size(); i++)
{
struct ExPolygon* pg = &clipper_result[i];
// 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);
}
result.set_hole_flag(res_contour, 0);
res_contour++;
// then the holes
for (int j = 0; j < pg->holes.size(); j++)
{
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);
}
result.set_hole_flag(res_contour, 1);
res_contour++;
}
}
#endif
for (int i=0; i<clipper_result.size(); i++)
{ {
Polygon* pg = &clipper_result[i]; struct ExPolygon* pg = &clipper_result[i];
IntPoint ip; IntPoint ip;
for (int j = 0; j < pg->size(); j++) // Get the boundary contour
for (int j = 0; j < pg->outer.size(); j++)
{ {
ip = IntPoint( pg->at(j).X, pg->at(j).Y ); ip = IntPoint( pg->outer[j].X, pg->outer[j].Y );
result.add_node(i, MakeTGPoint(ip)); result.add_node(res_contour, MakeTGPoint(ip));
} }
if (i==0) result.set_hole_flag(res_contour, 0);
res_contour++;
// then the holes
for (int j = 0; j < pg->holes.size(); j++)
{ {
result.set_hole_flag(i, 0); for (int k = 0; k < pg->holes[j].size(); k++)
} {
else 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(i, 1); }
result.set_hole_flag(res_contour, 1);
res_contour++;
} }
} }
} }