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/* Copyright (c) 2006-2007, Stefan Eilemann <eile@equalizergraphics.com> |
/* Copyright (c) 2006-2007, Stefan Eilemann <eile@equalizergraphics.com> |
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All rights reserved. |
All rights reserved. |
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Adapted code for Equalizer usage. |
- Adapted code for Equalizer usage. |
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- Improved malloc fragmentation behaviour |
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*/ |
*/ |
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/****************************************************************************** |
/****************************************************************************** |
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#include <float.h> |
#include <float.h> |
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#include <math.h> |
#include <math.h> |
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#define CHUNKSIZE 4096 |
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#define MAXDEPTH 256 |
#define MAXDEPTH 256 |
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#define PLYFILEVERSION 20 |
#define PLYFILEVERSION 20 |
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template<class FaceType> |
template<class FaceType> |
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PlyModel<FaceType>::PlyModel( void ) |
PlyModel<FaceType>::PlyModel( void ) |
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: _nFaces(0), |
: _nFaces(0), |
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_faces(NULL) |
_faces(0) |
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{ |
{ |
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_bbox.parent = NULL; |
_bbox.parent = 0; |
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_bbox.next = NULL; |
_bbox.next = 0; |
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_bbox.children = NULL; |
_bbox.children = 0; |
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_bbox.faces = NULL; |
_bbox.faces = 0; |
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_bbox.nFaces = 0; |
_bbox.nFaces = 0; |
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} |
} |
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template<class FaceType> |
template<class FaceType> |
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PlyModel<FaceType>::~PlyModel() |
PlyModel<FaceType>::~PlyModel() |
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{ |
{ |
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if( _faces != NULL ) |
if( _faces != 0 ) |
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free( _faces ); |
free( _faces ); |
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_faces = NULL; |
_faces = 0; |
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freeBBoxes( _bbox ); |
freeBBoxes( _bbox ); |
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} |
} |
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void PlyModel<FaceType>::setFaces( size_t nFaces, FaceType *faces, |
void PlyModel<FaceType>::setFaces( size_t nFaces, FaceType *faces, |
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size_t bboxFaceThreshold ) |
size_t bboxFaceThreshold ) |
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{ |
{ |
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if( _faces != NULL ) |
if( _faces != 0 ) |
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free( _faces ); |
free( _faces ); |
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if( nFaces == 0 ) |
if( nFaces == 0 ) |
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EQINFO << eqBase::disableHeader << "Filling bounding boxes"; |
EQINFO << eqBase::disableHeader << "Filling bounding boxes"; |
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_bbox.children = NULL; |
_bbox.children = 0; |
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_bbox.parent = NULL; |
_bbox.parent = 0; |
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_bbox.next = NULL; |
_bbox.next = 0; |
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_bbox.range[0] = 0.0f; |
_bbox.range[0] = 0.0f; |
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_bbox.range[1] = 1.0f - numeric_limits<float>::epsilon(); |
_bbox.range[1] = 1.0f - numeric_limits<float>::epsilon(); |
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++filled; |
++filled; |
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#endif |
#endif |
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bbox.nFaces = 0; |
vector<FaceType> bboxFaces; |
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bbox.faces = NULL; |
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for( size_t i=0; i<nFaces; i++ ) |
for( size_t i=0; i<nFaces; i++ ) |
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{ |
{ |
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if( faceInBBox( bbox.pos, faceBBox )) |
if( faceInBBox( bbox.pos, faceBBox )) |
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{ |
{ |
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expandBox( bbox.cullBox, faceBBox ); |
expandBox( bbox.cullBox, faceBBox ); |
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addFaceToBBox( bbox, face ); |
bboxFaces.push_back( face ); |
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} |
} |
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} |
} |
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calculateCullSphere( bbox ); |
calculateCullSphere( bbox ); |
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// update range |
// update range |
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if( nFaces == 0 ) // end pos |
if( bboxFaces.empty( )) // end pos |
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bbox.range[1] = bbox.range[0]; |
bbox.range[1] = bbox.range[0]; |
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else |
else |
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{ |
{ |
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const float start = bbox.range[0]; // start pos set by previous or init |
const float start = bbox.range[0]; // start pos set by previous or init |
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const float range = bbox.range[1]; // parents range span set in init |
const float range = bbox.range[1]; // parents range span set in init |
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bbox.range[1] = start + range * bbox.nFaces / nFaces; |
bbox.range[1] = start + range * bboxFaces.size() / nFaces; |
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} |
} |
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if( bbox.next != NULL ) // start range position of next child |
if( bbox.next != 0 ) // start range position of next child |
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bbox.next->range[0] = bbox.range[1]; |
bbox.next->range[0] = bbox.range[1]; |
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bbox.faces = &_faces[_nFaces]; |
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bbox.nFaces = bboxFaces.size(); |
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if( bbox.nFaces < bboxFaceThreshold || depth > MAXDEPTH ) |
if( bbox.nFaces < bboxFaceThreshold || depth > MAXDEPTH ) |
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{ |
{ |
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if( bbox.nFaces == 0 ) |
if( bboxFaces.empty( )) |
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return; |
return; |
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memcpy( &_faces[_nFaces], bbox.faces, bbox.nFaces * sizeof(FaceType) ); |
memcpy( &_faces[_nFaces], &bboxFaces.front(), |
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free( bbox.faces ); |
bbox.nFaces * sizeof( FaceType )); |
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bbox.faces = &_faces[_nFaces]; |
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_nFaces += bbox.nFaces; |
_nFaces += bbox.nFaces; |
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} |
} |
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else |
else |
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// recursive-fill children bboxes |
// recursive-fill children bboxes |
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createBBoxChildren( bbox ); |
createBBoxChildren( bbox ); |
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FaceType *faces = bbox.faces; |
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bbox.faces = &_faces[_nFaces]; |
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size_t cnf = 0; |
size_t cnf = 0; |
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for( int j=0; j<8; j++ ) |
for( int j=0; j<8; j++ ) |
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{ |
{ |
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fillBBox( bbox.nFaces, faces, bbox.children[j], bboxFaceThreshold, |
fillBBox( bboxFaces.size(), &bboxFaces.front(), bbox.children[j], |
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depth+1 ); |
bboxFaceThreshold, depth+1 ); |
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cnf += bbox.children[j].nFaces; |
cnf += bbox.children[j].nFaces; |
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} |
} |
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EQASSERT( cnf == bbox.nFaces ); |
EQASSERT( cnf == bbox.nFaces ); |
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bbox.nFaces = cnf; |
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free( faces ); |
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} |
} |
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} |
} |
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if( i<7 ) |
if( i<7 ) |
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bbox.children[i].next = &bbox.children[i+1]; |
bbox.children[i].next = &bbox.children[i+1]; |
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else |
else |
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bbox.children[i].next = NULL; |
bbox.children[i].next = 0; |
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} |
} |
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// range start (child updates next child when filling bbox) |
// range start (child updates next child when filling bbox) |
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} |
} |
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//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
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// addFaceToBBox |
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//--------------------------------------------------------------------------- |
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template<class FaceType> |
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void PlyModel<FaceType>::addFaceToBBox( BBox &bbox, FaceType &face ) |
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{ |
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if( bbox.nFaces%CHUNKSIZE == 0 ) |
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{ |
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if( bbox.faces == NULL ) |
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bbox.faces = (FaceType *)malloc( CHUNKSIZE*sizeof(FaceType) ); |
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else |
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{ |
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size_t newSize = (bbox.nFaces/CHUNKSIZE + 1) * |
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CHUNKSIZE*sizeof(FaceType); |
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bbox.faces = (FaceType *)realloc( bbox.faces, newSize ); |
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} |
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} |
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memcpy( &bbox.faces[bbox.nFaces], &face, sizeof( FaceType )); |
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bbox.nFaces++; |
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} |
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//--------------------------------------------------------------------------- |
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// scale |
// scale |
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//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
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struct ScaleData |
struct ScaleData |
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}; |
}; |
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scaleModel( data.scale, data.offset ); |
scaleModel( data.scale, data.offset ); |
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traverseBBox( &_bbox, scaleBBoxCB, scaleBBoxCB, NULL, &data ); |
traverseBBox( &_bbox, scaleBBoxCB, scaleBBoxCB, 0, &data ); |
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} |
} |
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template<class FaceType> |
template<class FaceType> |
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template<class FaceType> |
template<class FaceType> |
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void PlyModel<FaceType>::freeBBoxes( BBox &bbox ) |
void PlyModel<FaceType>::freeBBoxes( BBox &bbox ) |
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{ |
{ |
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bbox.faces = NULL; |
bbox.faces = 0; |
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if( bbox.children == NULL ) |
if( bbox.children == 0 ) |
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return; |
return; |
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for( int i=0; i<8; i++ ) |
for( int i=0; i<8; i++ ) |
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freeBBoxes( bbox.children[i] ); |
freeBBoxes( bbox.children[i] ); |
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free( bbox.children ); |
free( bbox.children ); |
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bbox.children = NULL; |
bbox.children = 0; |
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} |
} |
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//--------------------------------------------------------------------------- |
//--------------------------------------------------------------------------- |
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void PlyModel<FaceType>::traverseBBox( BBox *top, TraverseCB preCB, |
void PlyModel<FaceType>::traverseBBox( BBox *top, TraverseCB preCB, |
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TraverseCB leafCB, TraverseCB postCB, void *userData ) |
TraverseCB leafCB, TraverseCB postCB, void *userData ) |
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{ |
{ |
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if ( top->children == NULL ) |
if ( top->children == 0 ) |
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{ |
{ |
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if ( leafCB ) leafCB( top, userData ); |
if ( leafCB ) leafCB( top, userData ); |
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return; |
return; |
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{ |
{ |
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parent = bbox->parent; |
parent = bbox->parent; |
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next = bbox->next; |
next = bbox->next; |
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child = (bbox->children==NULL) ? NULL : &bbox->children[0]; |
child = (bbox->children==0) ? 0 : &bbox->children[0]; |
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//---------- down-right traversal |
//---------- down-right traversal |
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if ( child == NULL ) // leaf |
if ( child == 0 ) // leaf |
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{ |
{ |
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if ( leafCB ) leafCB( bbox, userData ); |
if ( leafCB ) leafCB( bbox, userData ); |
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} |
} |
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else // node |
else // node |
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{ |
{ |
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if( preCB != NULL ) preCB( bbox, userData ); |
if( preCB != 0 ) preCB( bbox, userData ); |
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bbox = child; |
bbox = child; |
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} |
} |
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//---------- up-right traversal |
//---------- up-right traversal |
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if( bbox == NULL && parent == NULL ) return; |
if( bbox == 0 && parent == 0 ) return; |
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while ( bbox == NULL ) |
while ( bbox == 0 ) |
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{ |
{ |
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bbox = parent; |
bbox = parent; |
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parent = bbox->parent; |
parent = bbox->parent; |
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os.write( (char *)bbox.range, 2*sizeof(float) ); |
os.write( (char *)bbox.range, 2*sizeof(float) ); |
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int nChildren = 8; |
int nChildren = 8; |
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if( bbox.children == NULL ) |
if( bbox.children == 0 ) |
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nChildren = 0; |
nChildren = 0; |
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os.write( (char *)&nChildren, sizeof(int) ); |
os.write( (char *)&nChildren, sizeof(int) ); |