forked from enlightenment/efl
Evas polygon: Fix polygon is_inside calculation.
SVN revision: 60721
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@ -525,13 +525,18 @@ evas_object_polygon_is_inside(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
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p_next = eina_list_data_get(o->points);
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}
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line_y = ((double) (p->y - p_next->y) / (double) (p->x - p_next->x)) *
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(x - p_next->x) + p_next->y;
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/* We crossed that edge if the line is directly above us */
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if ((line_y < y) &&
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(((p->x < p_next->x) && (p->x <= x) && (x <= p_next->x)) ||
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((p->x > p_next->x) && (p_next->x <= x) && (x <= p->x))))
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num_edges++;
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/* This only works if this condition is true */
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if ((x != p_next->x) && (p->x != p_next->x))
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{
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line_y = ((double) (p->y - p_next->y) /
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(double) (p->x - p_next->x)) *
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(x - p_next->x) + p_next->y;
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/* We crossed that edge if the line is directly above us */
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if ((line_y < y) &&
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(((p->x < p_next->x) && (p->x <= x) && (x <= p_next->x)) ||
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((p->x > p_next->x) && (p_next->x <= x) && (x <= p->x))))
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num_edges++;
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}
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}
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/* Return true if num_edges is odd */
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