Differential D12048 Diff 42379 source/blender/gpencil_modifiers/intern/lineart/MOD_lineart.h

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	#define LRT_ABC(index) (index == 0 ? a : (index == 1 ? b : c))			#define LRT_ABC(index) (index == 0 ? a : (index == 1 ? b : c))

	#define LRT_DOUBLE_CLOSE_ENOUGH(a, b) (((a) + DBL_EDGE_LIM) >= (b) && ((a)-DBL_EDGE_LIM) <= (b))			#define LRT_DOUBLE_CLOSE_ENOUGH(a, b) (((a) + DBL_EDGE_LIM) >= (b) && ((a)-DBL_EDGE_LIM) <= (b))

	BLI_INLINE int lineart_LineIntersectTest2d(			BLI_INLINE int lineart_LineIntersectTest2d(
	const double a1, const double a2, const double b1, const double b2, double *aRatio)			const double a1, const double a2, const double b1, const double b2, double *aRatio)
	{			{
	#define USE_VECTOR_LINE_INTERSECTION			/* Legacy intersection math aligns better with occlusion function quirks. */
				/* #define USE_VECTOR_LINE_INTERSECTION */
	#ifdef USE_VECTOR_LINE_INTERSECTION			#ifdef USE_VECTOR_LINE_INTERSECTION

	/* from isect_line_line_v2_point() */			/* from isect_line_line_v2_point() */

	double s10[2], s32[2];			double s10[2], s32[2];
	double div;			double div;

	sub_v2_v2v2_db(s10, a2, a1);			sub_v2_v2v2_db(s10, a2, a1);
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