OrbazTrueBlock Class Reference

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#include <IParticleChannelTrueFalseIterator.h>

Inheritance diagram for OrbazTrueBlock:

List of all members.

Classes
class	NumberBitsSetInUChar
Public Member Functions
	OrbazTrueBlock ()
	OrbazTrueBlock (const OrbazTrueBlock &block)
	OrbazTrueBlock (int majorIndex, DWORD32 blockIndices)
int	GetMajorIndex (void) const
void	SetMajorIndex (int index)
void	AddBlockIndex (int index)
int	NumberSet (void) const
Static Public Member Functions
static int	SetAllTrueBlocks (int particleCount, OrbazTrueBlock *&trueBlocks)
static int	GetMaxNumTrueBlocks (int particleCount)
static int	OptimizeMemoryUsage (int numBlocksSet, int numBlocksAllocated, OrbazTrueBlock *&trueBlocks)
Protected Attributes
int	m_majorIndex
DWORD32	m_blockIndices

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Constructor & Destructor Documentation

OrbazTrueBlock

(

)

[inline]

        :   m_majorIndex(0)
        ,   m_blockIndices(0)
    {
    }

OrbazTrueBlock

(

const OrbazTrueBlock &

block

)

[inline]

        :   m_majorIndex(block.m_majorIndex)
        ,   m_blockIndices(block.m_blockIndices)
    {
    }

OrbazTrueBlock	(	int	majorIndex,
		DWORD32	blockIndices
	)		[inline]

        :   m_majorIndex(majorIndex)
        ,   m_blockIndices(blockIndices)
    {
    }

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Member Function Documentation

int GetMajorIndex

(

void

)

const [inline]

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{ return m_majorIndex; }

void SetMajorIndex

(

int

index

)

[inline]

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{ m_majorIndex = index; }

void AddBlockIndex

(

int

index

)

[inline]

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{ m_blockIndices |= (1<<(index&kBitsPerDWORDMask)); }

int NumberSet

(

void

)

const [inline]

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    {
        static NumberBitsSetInUChar nbc;
        int numSet = 0;
        uchar*  miniBlocks = (uchar*)(&m_blockIndices);
        for(int i=0; i<4; ++i)
            numSet += nbc.getNumBitsSet(miniBlocks[i]);
        return numSet;
    }

static int SetAllTrueBlocks	(	int	particleCount,
		OrbazTrueBlock *&	trueBlocks
	)		[inline, static]

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    {
        if (trueBlocks != NULL)
        {
            delete [] trueBlocks;
            trueBlocks = NULL;
        }

        int numTrueBlocks = particleCount>>5;
        bool incompleteEndBlock = (particleCount%kBitsPerDWORD != 0);
        int numCompleteBlocks = numTrueBlocks;
        if (incompleteEndBlock)
            ++numTrueBlocks;
        trueBlocks = new OrbazTrueBlock[numTrueBlocks];
        int i=0;
        for(; i<numCompleteBlocks; ++i)
            trueBlocks[i] = OrbazTrueBlock(i<<5, 0xFFFFFFFF);
        if (incompleteEndBlock)
            for(int j=i<<5; j<particleCount; ++j)
                trueBlocks[i].AddBlockIndex(j);
        return numTrueBlocks;
    }

static int GetMaxNumTrueBlocks

(

int

particleCount

)

[inline, static]

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    {
        int numTrueBlocks = particleCount >> 5;
        if (particleCount % kBitsPerDWORD != 0)
            ++numTrueBlocks;
        return numTrueBlocks;
    }

static int OptimizeMemoryUsage	(	int	numBlocksSet,
		int	numBlocksAllocated,
		OrbazTrueBlock *&	trueBlocks
	)		[inline, static]

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    {
        if (numBlocksSet != numBlocksAllocated)
        {
            OrbazTrueBlock* temp = new OrbazTrueBlock[numBlocksSet];
            memcpy(temp, trueBlocks, sizeof(OrbazTrueBlock)*numBlocksSet);
            delete [] trueBlocks;
            trueBlocks = temp;
        }
        return numBlocksSet;
    }

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Member Data Documentation

int m_majorIndex [protected]

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DWORD32 m_blockIndices [protected]

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