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fall through to cross-product if the y-max-baseline returns a degenerate line

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(i.e. maxIndex == minIndex)



git-svn-id: http://skia.googlecode.com/svn/trunk@3119 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@google.com 2012-01-31 15:25:22 +00:00
parent 9732f62eae
commit 3e44e4d1be
1 changed files with 4 additions and 1 deletions
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5
src/core/SkPath.cpp
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@ -2023,7 +2023,9 @@ bool SkPath::cheapComputeDirection(Direction* dir) const {
if (pts[(index + 1) % n].fY == pts[index].fY) {
int maxIndex;
int minIndex = find_min_max_x_at_y(pts, index, n, &maxIndex);
// minIndex might == maxIndex, but that should be fine.
if (minIndex == maxIndex) {
goto TRY_CROSSPROD;
}
SkASSERT(pts[minIndex].fY == pts[index].fY);
SkASSERT(pts[maxIndex].fY == pts[index].fY);
SkASSERT(pts[minIndex].fX <= pts[maxIndex].fX);
@ -2031,6 +2033,7 @@ bool SkPath::cheapComputeDirection(Direction* dir) const {
// SkScalar, since we just want - or + to signal the direction.
cross = minIndex - maxIndex;
} else {
TRY_CROSSPROD:
// Find a next and prev index to use for the cross-product test,
// but we try to find pts that form non-zero vectors from pts[index]
//