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Another polygon fix: if the outer ring was dropped, drop its inner rings too

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This commit is contained in:
Eric Fischer 2015-11-02 11:43:44 -08:00
parent 4c4ba693b1
commit 36f4f77640
1 changed files with 10 additions and 1 deletions
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11
geometry.cc
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@ -344,6 +344,7 @@ drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double
long long pixel = (1 << (32 - detail - z)) * 2;
*reduced = true;
bool included_last_outer = false;
for (unsigned i = 0; i < geom.size(); i++) {
if (geom[i].op == VT_MOVETO) {
@ -361,7 +362,7 @@ drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double
}
area = area / 2;
if (fabs(area) <= pixel * pixel) {
if (fabs(area) <= pixel * pixel || (area < 0 && !included_last_outer)) {
// printf("area is only %f vs %lld so using square\n", area, pixel * pixel);
*accum_area += area;
@ -376,6 +377,10 @@ drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double
*accum_area -= pixel * pixel;
}
if (area >= 0) {
included_last_outer = false;
}
} else {
// printf("area is %f so keeping instead of %lld\n", area, pixel * pixel);
@ -384,6 +389,10 @@ drawvec reduce_tiny_poly(drawvec &geom, int z, int detail, bool *reduced, double
}
*reduced = false;
if (area >= 0) {
included_last_outer = true;
}
}
i = j - 1;