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#include <cstdlib> |
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#include <cstring> |
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#include <cmath> |
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|
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#include "simError.h" |
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#include "SimInfo.hpp" |
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#include "ReadWrite.hpp" |
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|
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#include "MoLocator.hpp" |
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#include "sysBuild.hpp" |
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#include "bilayerSys.hpp" |
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|
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|
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int buildRandomBilayer( void ); |
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|
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void getRandomRot( double rot[3][3] ); |
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|
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int buildBilayer( int isRandom ){ |
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|
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if( isRandom ){ |
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return buildRandomBilayer(); |
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} |
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else{ |
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sprintf( painCave.errMsg, |
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"Cannot currently create a non-random bilayer.\n" ); |
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painCave.isFatal = 1; |
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simError(); |
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return 0; |
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} |
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} |
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|
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|
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|
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int buildRandomBilayer( void ){ |
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|
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int i,j,k; |
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int nAtoms, atomIndex, molIndex, molID; |
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int* molSeq; |
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int* molMap; |
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int* cardDeck; |
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int deckSize; |
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int rSite, rCard; |
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double cell; |
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int nCells, nSites, siteIndex; |
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double rot[3][3]; |
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double pos[3]; |
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|
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Atom** atoms; |
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SimInfo* simnfo; |
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DumpWriter* writer; |
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MoLocator** locate; |
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|
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// initialize functions and variables |
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|
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srand48( RAND_SEED ); |
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molSeq = NULL; |
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molMap = NULL; |
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cardDeck = NULL; |
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atoms = NULL; |
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locate = NULL; |
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simnfo = NULL; |
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writer = NULL; |
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|
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// calculate the number of cells in the fcc box |
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|
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nCells = 0; |
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nSites = 0; |
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while( nSites < bsInfo.totNmol ){ |
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nCells++; |
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nSites = 4.0 * pow( (double)nCells, 3.0 ); |
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} |
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|
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|
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// create the molMap and cardDeck arrays |
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|
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molMap = new int[nSites]; |
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cardDeck = new int[nSites]; |
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|
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for(i=0; i<nSites; i++){ |
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molMap[i] = -1; |
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cardDeck[i] = i; |
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} |
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|
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// randomly place the molecules on the sites |
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|
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deckSize = nSites; |
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for(i=0; i<bsInfo.totNmol; i++){ |
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rCard = (int)( deckSize * drand48() ); |
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rSite = cardDeck[rCard]; |
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molMap[rSite] = i; |
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|
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// book keep the card deck; |
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|
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deckSize--; |
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cardDeck[rCard] = cardDeck[deckSize]; |
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} |
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|
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|
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// create the MoLocator and Atom arrays |
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|
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nAtoms = 0; |
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molIndex = 0; |
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locate = new MoLocator*[bsInfo.nComponents]; |
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molSeq = new int[bsInfo.totNmol]; |
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for(i=0; i<bsInfo.nComponents; i++){ |
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locate[i] = new MoLocator( bsInfo.compStamps[i] ); |
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for(j=0; j<bsInfo.componentsNmol[i]; j++){ |
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molSeq[molIndex] = i; |
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molIndex++; |
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nAtoms += bsInfo.compStamps[i]->getNAtoms(); |
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} |
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} |
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|
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Atom::createArrays( nAtoms ); |
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atoms = new Atom*[nAtoms]; |
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|
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|
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// place the molecules at each FCC site |
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|
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cell = 5.0; |
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for(i=0; i<bsInfo.nComponents; i++){ |
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if(cell < locate[i]->getMaxLength() ) cell = locate[i]->getMaxLength(); |
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} |
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cell *= M_SQRT2; |
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|
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siteIndex = 0; |
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atomIndex = 0; |
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for(i=0; i<nCells; i++){ |
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for(j=0; j<nCells; j++){ |
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for(k=0; k<nCells; k++){ |
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|
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if( molMap[siteIndex] >= 0 ){ |
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pos[0] = i * cell; |
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pos[1] = j * cell; |
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pos[2] = k * cell; |
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|
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getRandomRot( rot ); |
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molID = molSeq[molMap[siteIndex]]; |
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locate[molID]->placeMol( pos, rot, &atoms[atomIndex] ); |
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|
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atomIndex += bsInfo.compStamps[molID]->getNAtoms(); |
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} |
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siteIndex++; |
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|
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if( molMap[siteIndex] >= 0 ){ |
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pos[0] = i * cell + (0.5 * cell); |
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pos[1] = j * cell; |
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pos[2] = k * cell + (0.5 * cell); |
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|
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getRandomRot( rot ); |
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molID = molSeq[molMap[siteIndex]]; |
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locate[molID]->placeMol( pos, rot, &atoms[atomIndex] ); |
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|
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atomIndex += bsInfo.compStamps[molID]->getNAtoms(); |
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} |
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siteIndex++; |
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|
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if( molMap[siteIndex] >= 0 ){ |
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pos[0] = i * cell + (0.5 * cell); |
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pos[1] = j * cell + (0.5 * cell); |
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pos[2] = k * cell; |
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|
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getRandomRot( rot ); |
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molID = molSeq[molMap[siteIndex]]; |
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locate[molID]->placeMol( pos, rot, &atoms[atomIndex] ); |
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|
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atomIndex += bsInfo.compStamps[molID]->getNAtoms(); |
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} |
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siteIndex++; |
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|
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if( molMap[siteIndex] >= 0 ){ |
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pos[0] = i * cell; |
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pos[1] = j * cell + (0.5 * cell); |
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pos[2] = k * cell + (0.5 * cell); |
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|
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getRandomRot( rot ); |
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molID = molSeq[molMap[siteIndex]]; |
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locate[molID]->placeMol( pos, rot, &atoms[atomIndex] ); |
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|
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atomIndex += bsInfo.compStamps[molID]->getNAtoms(); |
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} |
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siteIndex++; |
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} |
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} |
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} |
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|
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// set up the SimInfo object |
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|
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bsInfo.boxX = nCells * cell; |
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bsInfo.boxY = nCells * cell; |
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bsInfo.boxZ = nCells * cell; |
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|
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simnfo = new SimInfo(); |
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simnfo->n_atoms = nAtoms; |
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simnfo->box_x = bsInfo.boxX; |
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simnfo->box_y = bsInfo.boxY; |
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simnfo->box_z = bsInfo.boxZ; |
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|
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sprintf( simnfo->statusName, "%s.dump", bsInfo.outPrefix ); |
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sprintf( simnfo->finalName, "%s.init", bsInfo.outPrefix ); |
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|
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simnfo->atoms = atoms; |
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|
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// set up the writer and write out |
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|
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writer = new DumpWriter( simnfo ); |
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writer->writeFinal(); |
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|
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// clean up the memory |
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|
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if( molMap != NULL ) delete[] molMap; |
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if( cardDeck != NULL ) delete[] cardDeck; |
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if( locate != NULL ){ |
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for(i=0; i<bsInfo.nComponents; i++){ |
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delete locate[i]; |
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} |
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delete[] locate; |
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} |
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if( atoms != NULL ){ |
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for(i=0; i<nAtoms; i++){ |
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delete atoms[i]; |
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} |
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Atom::destroyArrays(); |
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delete[] atoms; |
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} |
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if( molSeq != NULL ) delete[] molSeq; |
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if( simnfo != NULL ) delete simnfo; |
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if( writer != NULL ) delete writer; |
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|
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return 1; |
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} |
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|
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|
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void getRandomRot( double rot[3][3] ){ |
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|
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double theta, phi, psi; |
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double cosTheta; |
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|
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// select random phi, psi, and cosTheta |
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|
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phi = 2.0 * M_PI * drand48(); |
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psi = 2.0 * M_PI * drand48(); |
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cosTheta = (2.0 * drand48()) - 1.0; // sample cos -1 to 1 |
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|
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theta = acos( cosTheta ); |
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|
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rot[0][0] = (cos(phi) * cos(psi)) - (sin(phi) * cos(theta) * sin(psi)); |
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rot[0][1] = (sin(phi) * cos(psi)) + (cos(phi) * cos(theta) * sin(psi)); |
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rot[0][2] = sin(theta) * sin(psi); |
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|
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rot[1][0] = -(cos(phi) * sin(psi)) - (sin(phi) * cos(theta) * cos(psi)); |
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rot[1][1] = -(sin(phi) * sin(psi)) + (cos(phi) * cos(theta) * cos(psi)); |
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rot[1][2] = sin(theta) * cos(psi); |
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|
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rot[2][0] = sin(phi) * sin(theta); |
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rot[2][1] = -cos(phi) * sin(theta); |
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rot[2][2] = cos(theta); |
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} |
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