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Fix bug 77823

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This commit is contained in:
Svetlana Kulikova
2025-10-23 13:13:15 +03:00
parent c8b34959d7
commit 2b214ab07d
1 changed files with 7 additions and 2 deletions
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9
PdfFile/SrcWriter/Utils.cpp
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@ -369,6 +369,9 @@ namespace PdfWriter
}
bool isPointInQuad(double px, double py, double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
{
if (x1 == x2 && x2 == x3 && x3 == x4 && y1 == y2 && y2 == y3 && y3 == y4)
return (px == x1 && py == y1);
// Проверяем знаки векторных произведений для всех сторон
double cross1 = crossProduct(x1, y1, x2, y2, px, py);
double cross2 = crossProduct(x2, y2, x3, y3, px, py);
@ -376,8 +379,10 @@ namespace PdfWriter
double cross4 = crossProduct(x4, y4, x1, y1, px, py);
// Точка внутри, если все векторные произведения имеют одинаковый знак
return (cross1 >= 0 && cross2 >= 0 && cross3 >= 0 && cross4 >= 0) ||
(cross1 <= 0 && cross2 <= 0 && cross3 <= 0 && cross4 <= 0);
bool allPositive = (cross1 >= 0 && cross2 >= 0 && cross3 >= 0 && cross4 >= 0);
bool allNegative = (cross1 <= 0 && cross2 <= 0 && cross3 <= 0 && cross4 <= 0);
return (allNegative || allPositive) && !(cross1 == 0 && cross2 == 0 && cross3 == 0 && cross4 == 0);
}
bool RectangleIntersection::segmentsIntersect(const CPoint& a, const CPoint& b, const CPoint& c, const CPoint& d, CPoint& intersection)
{