part.cpp

光滑质点无网格法SPH并行计算程序

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// 
// =============================================================================
//                       Minimalist OpenGL Environment
//                       Parallel Rendering Extension
// =============================================================================
//
// Copyright 2007 Balazs Domonkos
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

/// @file Part.cpp
/// ParaComp generic window proxy

#include <paracomp/include/Part.h>

#include <math.h>

#if MINGLE_PARACOMP_SUPPORT == 1

namespace MinGLE {

//const double ParaCompPart::DEFAULT_BOUNDING_BOX_OFFSET[3] = {0.0, 0.0, 0.0};
//const double ParaCompPart::INVALID_BOUNDING_BOX_SIZE[3] = {0.0, 0.0, 0.0};

#define PCCHECKERROR(method, err) 	if(err!=PC_NO_ERROR) Except(method, pcGetErrorString(err))

ParaCompPart::ParaCompPart(Window *window, ParaCompSupport *support, ParallelRenderingSupport::CompositingOperator compositingOperator) :
	ParallelRenderingWindowProxy(window, compositingOperator), 
	mSupport(support), mContext(0) 
	//mBoundingBoxIsInvalid(true), 
{
	// Initialize bounding box
	//mBoundingBoxOffset[0] = DEFAULT_BOUNDING_BOX_OFFSET[0], mBoundingBoxOffset[1] = DEFAULT_BOUNDING_BOX_OFFSET[1], mBoundingBoxOffset[2] = DEFAULT_BOUNDING_BOX_OFFSET[2]; 
	//mBoundingBoxSize[0] = INVALID_BOUNDING_BOX_SIZE[0], mBoundingBoxSize[1] = INVALID_BOUNDING_BOX_SIZE[1], mBoundingBoxSize[2] = INVALID_BOUNDING_BOX_SIZE[2]; 

	// Initialize center
	//_calculateBoundingBoxCenter();
	//mBoundingBoxCenter[3] = 1.0; 
}

ParaCompPart::~ParaCompPart() {
	if(mContext) destroyContext();
	if(mFrameProcessor) delete mFrameProcessor;
}

void ParaCompPart::setSortOrder(unsigned order) {
	mFrameProcessor->setSortOrder((PCuint) order);
}

void ParaCompPart::destroyContext() {
	Assert(mContext, "ParaCompPart::destroyContext");

	// Destroy the context.
    // Note that this is an implicit sync.  All hosts not exit 
    // this call until all hosts have made this call.	
	{ PCerr err = pcContextDestroy(mContext);
	PCCHECKERROR("ParaCompPart::destroyContext", err); }
}

void ParaCompPart::_refreshContextInfo() {
	// Determine our host index
    pcContextGetInteger(mContext, PC_HOSTINDEX, PC_LOCALHOST_INDEX, &mThisRenderer);
    
    // And the total number of hosts 
    pcContextGetInteger(mContext, PC_NUM_HOSTS, 0, &mRendererCount);
}

void ParaCompPart::_createFrameProcessor() {
	// TODO a parameter should decide what kind if frame processor to create
	//mFrameProcessor = new FrameProcessor(mContext, mCompositingOperator==ParallelRenderingSupport::ALPHA_BLEND_OPERATOR);
	mFrameProcessor = new FrameProcessorHP(mContext, mCompositingOperator==ParallelRenderingSupport::ALPHA_BLEND_OPERATOR);
}

/*void ParaCompPart::_calculateBoundingBoxCenter() {
	mBoundingBoxCenter[0] = mBoundingBoxOffset[0] + 0.5 * mBoundingBoxSize[0];
	mBoundingBoxCenter[1] = mBoundingBoxOffset[1] + 0.5 * mBoundingBoxSize[1];
	mBoundingBoxCenter[2] = mBoundingBoxOffset[2] + 0.5 * mBoundingBoxSize[2];
}*/

#undef PCCHECKERROR

} // namespace MinGLE

#endif // MINGLE_PARACOMP_SUPPORT == 1