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Remember to do floating point division in pnpoly

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This commit is contained in:
Eric Fischer 2016-04-19 12:28:49 -07:00
parent 04c56320d2
commit 62a74afbdc
1 changed files with 1 additions and 1 deletions
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2
geometry.cc
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@ -514,7 +514,7 @@ static int pnpoly(drawvec &vert, size_t start, size_t nvert, long long testx, lo
int i, j, c = 0; int i, j, c = 0;
for (i = 0, j = nvert - 1; i < nvert; j = i++) { for (i = 0, j = nvert - 1; i < nvert; j = i++) {
if (((vert[i + start].y > testy) != (vert[j + start].y > testy)) && if (((vert[i + start].y > testy) != (vert[j + start].y > testy)) &&
(testx < (vert[j + start].x - vert[i + start].x) * (testy - vert[i + start].y) / (vert[j + start].y - vert[i + start].y) + vert[i + start].x)) (testx < (vert[j + start].x - vert[i + start].x) * (testy - vert[i + start].y) / (double) (vert[j + start].y - vert[i + start].y) + vert[i + start].x))
c = !c; c = !c;
} }
return c; return c;