Move Curt's ssgEntityArray experiment over to SimGear.
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ehofman
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362
simgear/screen/ssgEntityArray.cxx
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362
simgear/screen/ssgEntityArray.cxx
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/*
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PLIB - A Suite of Portable Game Libraries
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Copyright (C) 1998,2002 Steve Baker
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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For further information visit http://plib.sourceforge.net
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "ssgEntityArray.hxx"
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// Forward declaration of internal ssg stuff (for hot/isec/los/etc.)
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void _ssgPushPath ( ssgEntity *l ) ;
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void _ssgPopPath () ;
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void ssgEntityArray::copy_from ( ssgEntityArray *src, int clone_flags )
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{
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ssgEntity::copy_from ( src, clone_flags ) ;
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ssgEntity *k = src -> getModel ( ) ;
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if ( k != NULL && ( clone_flags & SSG_CLONE_RECURSIVE ) )
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setModel ( (ssgEntity *)( k -> clone ( clone_flags )) ) ;
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else
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setModel ( k ) ;
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ssgTransform *t = src -> getPosTransform();
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if ( t != NULL && ( clone_flags & SSG_CLONE_RECURSIVE ) )
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pos = (ssgTransform *)( t -> clone ( clone_flags ) );
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else
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pos = t;
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ssgVertexArray *v = src -> getLocations();
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if ( v != NULL && ( clone_flags & SSG_CLONE_RECURSIVE ) )
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locations = (ssgVertexArray *)( v -> clone ( clone_flags ) );
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else
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locations = v;
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v = src -> getOrientations();
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if ( v != NULL && ( clone_flags & SSG_CLONE_RECURSIVE ) )
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orientations = (ssgVertexArray *)( v -> clone ( clone_flags ) );
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else
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orientations = v;
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}
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ssgBase *ssgEntityArray::clone ( int clone_flags )
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{
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ssgEntityArray *b = new ssgEntityArray ;
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b -> copy_from ( this, clone_flags ) ;
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return b ;
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}
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ssgEntityArray::ssgEntityArray (void)
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{
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type = ssgTypeBranch () ;
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pos = new ssgTransform;
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locations = new ssgVertexArray();
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orientations = new ssgVertexArray();
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}
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ssgEntityArray::~ssgEntityArray (void)
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{
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removeModel() ;
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ssgDeRefDelete( pos );
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locations->removeAll();
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orientations->removeAll();
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delete orientations;
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delete locations;
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delete pos;
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}
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void ssgEntityArray::zeroSpareRecursive ()
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{
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zeroSpare () ;
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model -> zeroSpareRecursive () ;
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pos -> zeroSpareRecursive () ;
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locations -> zeroSpareRecursive () ;
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orientations -> zeroSpareRecursive () ;
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}
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void ssgEntityArray::recalcBSphere (void)
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{
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emptyBSphere () ;
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pos->removeAllKids();
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pos->addKid( model );
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for ( int i = 0; i < locations->getNum(); ++i ) {
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sgCoord c;
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sgSetCoord( &c, locations->get(i), orientations->get(i) );
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pos->setTransform( &c );
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extendBSphere( pos->getBSphere() );
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}
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pos->removeAllKids();
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/* FIXME: Traverse placement list
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for ( ssgEntity *k = getKid ( 0 ) ; k != NULL ; k = getNextKid () )
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extendBSphere ( k -> getBSphere () ) ;
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*/
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bsphere_is_invalid = FALSE ;
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}
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void ssgEntityArray::removeModel ()
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{
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model->deadBeefCheck () ;
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ssgDeRefDelete ( model ) ;
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}
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void ssgEntityArray::replaceModel ( ssgEntity *new_entity )
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{
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removeModel();
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setModel( new_entity );
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}
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void ssgEntityArray::addPlacement ( sgVec3 loc, sgVec3 orient )
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{
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locations->add( loc ) ;
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orientations->add( orient ) ;
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dirtyBSphere () ;
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}
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void ssgEntityArray::removeAllPlacements()
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{
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locations->removeAll();
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orientations->removeAll();
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dirtyBSphere () ;
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}
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void ssgEntityArray::print ( FILE *fd, char *indent, int how_much )
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{
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ssgEntity::print ( fd, indent, how_much ) ;
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fprintf ( fd, "%s Num Kids=%d\n", indent, getNumKids() ) ;
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if ( getNumParents() != getRef() )
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ulSetError ( UL_WARNING, "Ref count doesn't tally with parent count" ) ;
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if ( how_much > 1 )
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{ if ( bsphere.isEmpty() )
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fprintf ( fd, "%s BSphere is Empty.\n", indent ) ;
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else
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fprintf ( fd, "%s BSphere R=%g, C=(%g,%g,%g)\n", indent,
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bsphere.getRadius(), bsphere.getCenter()[0], bsphere.getCenter()[1], bsphere.getCenter()[2] ) ;
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}
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char in [ 100 ] ;
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sprintf ( in, "%s ", indent ) ;
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model -> print ( fd, in, how_much ) ;
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}
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#ifdef HAVE_PLIB_PSL
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void ssgEntityArray::getStats ( int *num_branches, int *num_leaves, int *num_tris, int *num_verts )
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{
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int nb, nl, nt, nv ;
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*num_branches = 1 ; /* this! */
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*num_leaves = 0 ;
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*num_tris = 0 ;
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*num_verts = 0 ;
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model -> getStats ( & nb, & nl, & nt, & nv ) ;
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*num_branches += nb * locations->getNum() ;
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*num_leaves += nl * locations->getNum() ;
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*num_tris += nt * locations->getNum() ;
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*num_verts += nv * locations->getNum() ;
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}
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#endif
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void ssgEntityArray::cull ( sgFrustum *f, sgMat4 m, int test_needed )
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{
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if ( ! preTravTests ( &test_needed, SSGTRAV_CULL ) )
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return ;
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int cull_result = cull_test ( f, m, test_needed ) ;
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if ( cull_result == SSG_OUTSIDE )
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return ;
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pos->removeAllKids();
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pos->addKid( model );
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for ( int i = 0; i < locations->getNum(); ++i ) {
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sgCoord c;
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sgSetCoord( &c, locations->get(i), orientations->get(i) );
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pos->setTransform( &c );
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pos->cull( f, m, cull_result != SSG_INSIDE );
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}
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pos->removeAllKids();
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postTravTests ( SSGTRAV_CULL ) ;
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}
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void ssgEntityArray::hot ( sgVec3 s, sgMat4 m, int test_needed )
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{
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if ( ! preTravTests ( &test_needed, SSGTRAV_HOT ) )
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return ;
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int hot_result = hot_test ( s, m, test_needed ) ;
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if ( hot_result == SSG_OUTSIDE )
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return ;
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_ssgPushPath ( this ) ;
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pos->removeAllKids();
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pos->addKid( model );
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for ( int i = 0; i < locations->getNum(); ++i ) {
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sgCoord c;
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sgSetCoord( &c, locations->get(i), orientations->get(i) );
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pos->setTransform( &c );
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pos->hot ( s, m, hot_result != SSG_INSIDE );
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}
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pos->removeAllKids();
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_ssgPopPath () ;
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postTravTests ( SSGTRAV_HOT ) ;
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}
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void ssgEntityArray::los ( sgVec3 s, sgMat4 m, int test_needed )
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{
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if ( ! preTravTests ( &test_needed, SSGTRAV_LOS ) )
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return ;
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int los_result = los_test ( s, m, test_needed ) ;
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if ( los_result == SSG_OUTSIDE )
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return ;
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_ssgPushPath ( this ) ;
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pos->removeAllKids();
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pos->addKid( model );
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for ( int i = 0; i < locations->getNum(); ++i ) {
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sgCoord c;
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sgSetCoord( &c, locations->get(i), orientations->get(i) );
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pos->setTransform( &c );
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pos->los ( s, m, los_result != SSG_INSIDE ) ;
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}
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pos->removeAllKids();
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_ssgPopPath () ;
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postTravTests ( SSGTRAV_LOS) ;
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}
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void ssgEntityArray::isect ( sgSphere *s, sgMat4 m, int test_needed )
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{
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if ( ! preTravTests ( &test_needed, SSGTRAV_ISECT ) )
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return ;
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int isect_result = isect_test ( s, m, test_needed ) ;
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if ( isect_result == SSG_OUTSIDE )
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return ;
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_ssgPushPath ( this ) ;
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pos->removeAllKids();
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pos->addKid( model );
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for ( int i = 0; i < locations->getNum(); ++i ) {
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sgCoord c;
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sgSetCoord( &c, locations->get(i), orientations->get(i) );
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pos->setTransform( &c );
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pos->isect ( s, m, isect_result != SSG_INSIDE ) ;
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}
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pos->removeAllKids();
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_ssgPopPath () ;
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postTravTests ( SSGTRAV_ISECT ) ;
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}
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#if 0
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int ssgEntityArray::load ( FILE *fd )
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{
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int nkids ;
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_ssgReadInt ( fd, & nkids ) ;
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if ( ! ssgEntity::load ( fd ) )
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return FALSE ;
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for ( int i = 0 ; i < nkids ; i++ )
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{
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ssgEntity *kid ;
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if ( ! _ssgLoadObject ( fd, (ssgBase **) &kid, ssgTypeEntity () ) )
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return FALSE ;
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addKid ( kid ) ;
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}
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return TRUE ;
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}
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int ssgEntityArray::save ( FILE *fd )
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{
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_ssgWriteInt ( fd, getNumKids() ) ;
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if ( ! ssgEntity::save ( fd ) )
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return FALSE ;
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for ( int i = 0 ; i < getNumKids() ; i++ )
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{
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if ( ! _ssgSaveObject ( fd, getKid ( i ) ) )
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return FALSE ;
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}
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return TRUE ;
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}
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#endif
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66
simgear/screen/ssgEntityArray.hxx
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66
simgear/screen/ssgEntityArray.hxx
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@ -0,0 +1,66 @@
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#ifndef _SSG_ENTITY_ARRAY_HXX
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#define _SSG_ENTITY_ARRAY_HXX
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <plib/ssg.h>
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class ssgEntityArray : public ssgEntity
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{
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// The replicated child
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ssgEntity *model ;
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// The one transformation node
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ssgTransform *pos;
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// The list of locations and orientations
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ssgVertexArray *locations;
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ssgVertexArray *orientations;
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protected:
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virtual void copy_from ( ssgEntityArray *src, int clone_flags ) ;
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public:
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virtual void zeroSpareRecursive ();
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virtual ssgBase *clone ( int clone_flags = 0 ) ;
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ssgEntityArray (void) ;
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virtual ~ssgEntityArray (void) ;
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ssgEntity *getModel () const { return model ; }
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void setModel ( ssgEntity *entity ) { model = entity; }
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void removeModel () ;
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void replaceModel ( ssgEntity *new_entity ) ;
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ssgVertexArray *getLocations () const { return locations; }
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ssgVertexArray *getOrientations () const { return orientations; }
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float *getLocation ( int i ) const { return locations->get( i ); }
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float *getOrientation ( int i ) const { return orientations->get( i ); }
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void addPlacement ( sgVec3 loc, sgVec3 orient );
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virtual int getNumPlacements() const { return locations->getNum(); }
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void removeAllPlacements();
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ssgTransform *getPosTransform() { return pos; }
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virtual const char *getTypeName(void) ;
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virtual void cull ( sgFrustum *f, sgMat4 m, int test_needed ) ;
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virtual void isect ( sgSphere *s, sgMat4 m, int test_needed ) ;
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virtual void hot ( sgVec3 s, sgMat4 m, int test_needed ) ;
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virtual void los ( sgVec3 s, sgMat4 m, int test_needed ) ;
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virtual void print ( FILE *fd = stderr, char *indent = "", int how_much = 2 ) ;
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#ifdef HAVE_PLIB_PSL
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virtual void getStats ( int *num_branches, int *num_leaves, int *num_tris, int *num_vertices ) ;
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#endif
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virtual int load ( FILE *fd ) ;
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virtual int save ( FILE *fd ) ;
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virtual void recalcBSphere () ;
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} ;
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#endif // _SSG_ENTITY_ARRAY_HXX
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