Method replaceWithLast

physx/source/common/src/CmPtrTable.cpp:154–192

}

void PtrTable::replaceWithLast(PxU32 index, PtrTableStorageManager& sm)
{
	PX_ASSERT(mCount!=0);

	if(mCount == 1)												// 1 -> 0 easy case
	{
		PX_ASSERT(mOwnsMemory);
		PX_ASSERT(mBufferUsed);

		mList = NULL;
		mCount = 0;
		mBufferUsed = false;
	}
	else if(mCount == 2)										// 2 -> 1 easy case
	{
		PX_ASSERT(!mBufferUsed);
		void* ptr = mList[1-index];
		if(mOwnsMemory)
			sm.deallocate(mList, 2*sizeof(void*));
		mSingle = ptr;
		mCount = 1;
		mBufferUsed = true;
		mOwnsMemory = true;
	} 
	else
	{
		PX_ASSERT(!mBufferUsed);

		mList[index] = mList[--mCount];								// remove before adjusting memory

		if(!mOwnsMemory)											// don't own the memory, must alloc
			realloc(0, Ps::nextPowerOfTwo(PxU32(mCount)-1), sm);	// if currently a power of 2, don't jump to the next one

		else if(Ps::isPowerOfTwo(mCount))							// own the memory, and implicit capacity requires that we downsize
			realloc(PxU32(mCount)*2, PxU32(mCount), sm);			// ... from the next power of 2, which was the old implicit capacity

		PX_ASSERT(mOwnsMemory);
	}
}

void Cm::PtrTable::getBinaryMetaData(PxOutputStream& stream)
{