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Fixed polygon region edges being unprotected on certain edges. Thanks Droolio.

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This commit is contained in:
Wizjany 2011-08-24 17:50:25 -04:00
parent 61a60ecdd6
commit 14dc868d45
1 changed files with 9 additions and 4 deletions
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13
src/main/java/com/sk89q/worldguard/protection/regions/ProtectedPolygonalRegion.java
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@ -102,6 +102,7 @@ public boolean contains(Vector pt) {
int xOld, zOld;
int x1, z1;
int x2, z2;
long crossproduct;
int i;
xOld = points.get(npoints - 1).getBlockX();
@ -125,10 +126,14 @@ public boolean contains(Vector pt) {
z1 = zNew;
z2 = zOld;
}
if ((xNew < targetX) == (targetX <= xOld)
&& ((long) targetZ - (long) z1) * (long) (x2 - x1) <= ((long) z2 - (long) z1)
* (long) (targetX - x1)) {
inside = !inside;
if (x1 <= targetX && targetX <= x2) {
crossproduct = ((long) targetZ - (long) z1) * (long) (x2 - x1)
- ((long) z2 - (long) z1) * (long) (targetX - x1);
if (crossproduct == 0) {
if ((z1 <= targetZ) == (targetZ <= z2)) return true; // on edge
} else if (crossproduct < 0 && (x1 != targetX)) {
inside = !inside;
}
}
xOld = xNew;
zOld = zNew;