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Early beginnings of sliver removal code.

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curt 1999-05-27 00:19:04 +00:00
parent 2ce6a72150
commit f508123cad
2 changed files with 24 additions and 1 deletions
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21
Tools/Construct/Clipper/clipper.cxx
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@ -150,6 +150,22 @@ bool FGClipper::load_polys(const string& path) {
} }
// merge any slivers in the specified polygon with larger
// neighboring polygons of higher priorigy
void FGClipper::merge_slivers(gpc_polygon *poly) {
cout << "Begin merge slivers" << endl;
// traverse each contour of the polygon and attempt to identify
// likely slivers
for ( int i = 0; i < poly->num_contours; i++ ) {
cout << "contour " << i << endl;
for (int j = 0; j < poly->contour[i].num_vertices; j++ ) {
cout << poly->contour[i].vertex[j].x << ","
<< poly->contour[i].vertex[j].y << endl;
}
}
}
// Do actually clipping work // Do actually clipping work
bool FGClipper::clip_all(const point2d& min, const point2d& max) { bool FGClipper::clip_all(const point2d& min, const point2d& max) {
gpc_polygon accum, result_union, tmp; gpc_polygon accum, result_union, tmp;
@ -182,7 +198,7 @@ bool FGClipper::clip_all(const point2d& min, const point2d& max) {
polys_in.safety_base.contour = NULL; polys_in.safety_base.contour = NULL;
gpc_add_contour( &polys_in.safety_base, &v_list, 0 ); gpc_add_contour( &polys_in.safety_base, &v_list, 0 );
int count = 0; // int count = 0;
// process polygons in priority order // process polygons in priority order
for ( int i = 0; i < FG_MAX_AREA_TYPES; ++i ) { for ( int i = 0; i < FG_MAX_AREA_TYPES; ++i ) {
cout << "num polys of type (" << i << ") = " cout << "num polys of type (" << i << ") = "
@ -249,6 +265,9 @@ bool FGClipper::clip_all(const point2d& min, const point2d& max) {
// only add to output list if the clip left us with a polygon // only add to output list if the clip left us with a polygon
if ( result_diff->num_contours > 0 ) { if ( result_diff->num_contours > 0 ) {
// merge any slivers with larger neighboring polygons
merge_slivers(result_diff);
polys_clipped.polys[i].push_back(result_diff); polys_clipped.polys[i].push_back(result_diff);
// char filename[256]; // char filename[256];

4
Tools/Construct/Clipper/clipper.hxx
View file

@ -96,6 +96,10 @@ public:
// Load a polygon definition file // Load a polygon definition file
bool load_polys(const string& path); bool load_polys(const string& path);
// merge any slivers in the specified polygon with larger
// neighboring polygons of higher priorigy
void merge_slivers(gpc_polygon *poly);
// Do actually clipping work // Do actually clipping work
bool clip_all(const point2d& min, const point2d& max); bool clip_all(const point2d& min, const point2d& max);