part.h

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.h
/// ParaComp generic window proxy

#ifndef __MINGLE_PARALLEL_PARACOMP_PART_H__
#define __MINGLE_PARALLEL_PARACOMP_PART_H__

// Include class definitions
#include <parallel-classes.h>
#include <paracomp/include/FrameProcessor.h>
#include <EventTransmission.h>
#include <ParallelRenderingWindowProxy.h>

#include <pcapi.h>

#if MINGLE_PARACOMP_SUPPORT == 1

namespace MinGLE {

	// Class predefinition
	class ParaCompSupport;

	class ParaCompPart : public ParallelRenderingWindowProxy {
			//static const double DEFAULT_BOUNDING_BOX_OFFSET[3];
			//static const double INVALID_BOUNDING_BOX_SIZE[3];

		protected:
			ParaCompSupport *mSupport;
			PCcontext mContext;
			
			FrameProcessor *mFrameProcessor;
		
			// Framelet size calculation
			//double mBoundingBoxIsInvalid;
			//double mBoundingBoxOffset[3], mBoundingBoxSize[3];
		
			// Sort order calculation
			//double mBoundingBoxCenter[4];
			
	    public:
	    	ParaCompPart(Window *window, ParaCompSupport *support,  ParallelRenderingSupport::CompositingOperator compositingOperator);
	    	~ParaCompPart();

	    	/*inline virtual void setBoundingBox(const double *offset, const double *size) {
				// Set bounding box and make it valid enabling automatic framlet and sort order calculations
	    		mBoundingBoxOffset[0] = offset[0], mBoundingBoxOffset[1] = offset[1], mBoundingBoxOffset[2] = offset[2]; 
	    		mBoundingBoxSize[0] = size[0], mBoundingBoxSize[1] = size[1], mBoundingBoxSize[2] = size[2];
	    		mBoundingBoxIsInvalid = false;
	    		
	    		// Calculate the center of the bounding box needed by sort order calculation
	    		_calculateBoundingBoxCenter(); 
	    	}*/
	    	
	    	virtual void createContext() = 0;
	    	virtual void destroyContext();

	    	virtual void setSortOrder(unsigned order);
	    	
	    	/// Contributing pixels and retrieving output
	    	inline void pixelTransfer() {

	    		// Contribute pixels
	    		if(mContributePixels) {
	    			
	    			// Calculate framelet sizes and offsets if needed
	    			if(mAutoCalculateFramelet) _calculateFramelet();
	    			
	    			// If the framelet is valid contribute pixels
	    			if(mValidFramelet) {

		    			// Calculate sort order if needed
		    			if(mAutoCalculateSortOrder && ParallelRenderingSupport::needSorting(mCompositingOperator)) _calculateSortOrder();
	    	    		
	    	    		// Note render method is only called when it is needed
		    			// Note when automatic framelet or sort order calculation is turned off
		    			// one probably wants to calculate these information during the
		    			// rendering method.
	    				_doRender();

	    				// Indicate the start of a new frame
	    	    		mFrameProcessor->beginFrame(mBoundingRectangleOffset[0], mBoundingRectangleOffset[1], mBoundingRectangleSize[0], mBoundingRectangleSize[1]);
	    				
	    				// Display bounding box if needed
	    				if(mDisplayDebug & ParallelRenderingSupport::DISPLAY_BOUNDING_BOX) 
	    					_displayBoundingBox(mDisplayDebug & ParallelRenderingSupport::DISPLAY_FILL);
	    	    		
	    				// Display bounding rectangle if needed
	    				if(mDisplayDebug & ParallelRenderingSupport::DISPLAY_BOUNDING_RECT) 
	    					_displayBoundingRectangle(mDisplayDebug & ParallelRenderingSupport::DISPLAY_FILL);

	    				// Add image date
	    				mFrameProcessor->addFrame();
	    			}
	    			
	    			// Otherwise, skip the contribution stage
	    			else {
	        			mFrameProcessor->skipFrame();
	    			}
	    		}
	    		
	    		// Skip contribution stage
	    		else {
        			mFrameProcessor->skipFrame();
	    		}
	    		
	    		// Close contribution stage
        		mFrameProcessor->endFrame();
				
        		// Retrieve output
        		if(mDisplayOutput)
        			mFrameProcessor->displayOutput(0, 0, mWindow->getWidth(), mWindow->getHeight());
	    	}
	    	
		protected:
			virtual void _refreshContextInfo();
			virtual void _createFrameProcessor();
			//virtual void _calculateBoundingBoxCenter();
			
			/*virtual inline void _saveOpenGLMatrices() {
   				glMatrixMode(GL_MODELVIEW); glPushMatrix();
   				glMatrixMode(GL_PROJECTION); glPushMatrix();
			}
			virtual inline void _restoreOpenGLMatrices() {
   				glMatrixMode(GL_MODELVIEW); glPopMatrix();
   				glMatrixMode(GL_PROJECTION); glPopMatrix();
			}*/
	};
}

#endif // MINGLE_PARACOMP_SUPPORT == 1

#endif // __MINGLE_PARALLEL_PARACOMP_PART_H__