densitytable.h

来自「3D reconstruction, medical image process」· C头文件 代码 · 共 63 行

#ifndef _DENSITYTABLE_H_
#define _DENSITYTABLE_H_

#include <xmmintrin.h>
#include "SummedAreaTable.h"

#define DENSITY_RANGE (4096)
class RxDensityTable {
protected:
	
	RxSummedAreaTable	m_SAT;
	float m_afOpacityCorrectionTable[256];

	const __m128 *m_pTable;	// 寇何俊辑 且寸
	__m128 *m_pOpacityCorrectedTable;
	__m128 *m_pPreIntegratedTable;
	
	void		MakeOpacityCorrectionTable(float fSpacing);
	void		MakeOpacityCorrectedDensityTable(float fSpacing);
	void		MakePreIntegratedTable();
public:

	RxDensityTable();
	~RxDensityTable();

	void		operator=(const RxDensityTable& info);

	void		SetSpectrumTable(__m128 *pTable);
	void		InitRendering(float fSpacing);

	int			IsTransparent(unsigned short nMax, unsigned short nMin) {return !m_SAT.LookUp(nMax, nMin);}
	int			IsTransparent(unsigned short nDensity) {return _mm_comieq_ss(m_pOpacityCorrectedTable[nDensity], _mm_setzero_ps());}

	// Get Color
	__m128		GetColor(unsigned short nDensity) {	return m_pOpacityCorrectedTable[nDensity];}
	void		GetColor(int nDensity, float fColor[4]) {_mm_storeu_ps(fColor, m_pOpacityCorrectedTable[nDensity]);}

	__m128 GetPreIntegratedColor(int nPrevDensity, int nCurrentDensity) {
		int nMaxDensity = __max(nPrevDensity, nCurrentDensity);
		int nMinDensity = __min(nPrevDensity, nCurrentDensity);
		__m128 vColor = _mm_sub_ps(m_pPreIntegratedTable[nMaxDensity], m_pPreIntegratedTable[nMinDensity]);

		int nRange = nMaxDensity - nMinDensity + 1;
		__m128 vRange = _mm_set1_ps((float)nRange);	// cvt肺 函券
		vRange = _mm_rcp_ps(vRange);

		return _mm_mul_ps(vColor, vRange);
	}

	void		GetPreIntegratedColor(int nPrevDensity, int nCurrentDensity, float fColor[4]) {
		int nMaxDensity = __max(nPrevDensity, nCurrentDensity);
		int nMinDensity = __min(nPrevDensity, nCurrentDensity);
		__m128 vColor = _mm_sub_ps(m_pPreIntegratedTable[nMaxDensity], m_pPreIntegratedTable[nMinDensity-1]);

		int nRange = nMaxDensity - nMinDensity + 1;
		__m128 vRange = _mm_set1_ps((float)nRange);	// cvt肺 函券
		vRange = _mm_rcp_ps(vRange);

		_mm_storeu_ps(fColor, _mm_mul_ps(vColor, vRange));
	}
};

#endif