Impala Documentation

template<class DstArrayT, class SrcArrayT>

void Impala::Core::Array::Trait::M9N4poFHS< DstArrayT, SrcArrayT >::DoIt	(	DstStorT *	FHx,
		DstStorT *	FHy,
		DstStorT *	FSx,
		DstStorT *	FSy,
		const SrcArithT &	R,
		const SrcArithT &	G,
		const SrcArithT &	B,
		const SrcArithT &	Rx,
		const SrcArithT &	Gx,
		const SrcArithT &	Bx,
		const SrcArithT &	Ry,
		const SrcArithT &	Gy,
		const SrcArithT &	By
	)			`[inline]`

Actual operation.

Definition at line 41 of file M9N4poFHS.h.

References Impala::Core::Array::Element::E1Sqrt(), and Impala::Core::Array::Trait::M9N4poFHS< DstArrayT, SrcArrayT >::mC.

00045     {
00046         SrcArithT saturation = Element::E1Sqrt(2*(R*R + G*G + B*B - R*G - R*B - G*B));
00047         
00048         *FHx = (saturation == 0) ? 0 : (R*(Bx-Gx) + G*(Rx-Bx) + B*(Gx-Rx)) / saturation;
00049         *FHy = (saturation == 0) ? 0 : (R*(By-Gy) + G*(Ry-By) + B*(Gy-Ry)) / saturation;
00050         saturation *= mC; //because S divides by sqrt(3)*saturation
00051         *FSx = (saturation == 0) ? 0 : (R*(2.*Rx-Gx-Bx)+G*(2.*Gx-Rx-Bx)+B*(2.*Bx-Rx-Gx)) / saturation;
00052         *FSy = (saturation == 0) ? 0 : (R*(2.*Ry-Gy-By)+G*(2.*Gy-Ry-By)+B*(2.*By-Ry-Gy)) / saturation;
00053     }

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