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/***********************************************************************
* FXRuby -- the Ruby language bindings for the FOX GUI toolkit.
* Copyright (c) 2001-2003 by J. Lyle Johnson. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information please contact the author by e-mail
* at "lyle@users.sourceforge.net".
***********************************************************************/
/***********************************************************************
* $Id: FXRbGLViewer.cpp 2190 2005-08-24 07:58:47Z lyle $
***********************************************************************/
#include "FXRbCommon.h"
// Process picks
FXGLObject* FXRbGLViewer::processHits(FXuint *pickbuffer,FXint nhits){
FXuint d1,d2,i,n,zmin,zmax,sel=0,nnames=0;
if(0<=nhits){
for(i=0,zmin=zmax=4294967295U; nhits>0; i+=n+3,nhits--){
n=pickbuffer[i];
d1=pickbuffer[1+i];
d2=pickbuffer[2+i];
if(d1<zmin || (d1==zmin && d2<=zmax)){
zmin=d1;
zmax=d2;
sel=i;
nnames=n;
}
}
FXASSERT(scene->isMemberOf(FXMETACLASS(FXRbGLObject)) || scene->isMemberOf(FXMETACLASS(FXRbGLShape)));
if(scene->isMemberOf(FXMETACLASS(FXRbGLObject))){
FXRbGLObject* obj=dynamic_cast<FXRbGLObject*>(scene);
FXASSERT(obj!=0);
return obj->identify(&pickbuffer[4+sel],nnames-1);
}
else{
FXRbGLShape* shape=dynamic_cast<FXRbGLShape*>(scene);
FXASSERT(shape!=0);
return shape->identify(&pickbuffer[4+sel],nnames-1);
}
}
return NULL;
}
// Build NULL-terminated list of ALL picked objects overlapping rectangle
FXGLObject** FXRbGLViewer::_select(FXint x,FXint y,FXint w,FXint h){
FXGLObject *obj,**objects=NULL;
FXint nhits,i,j;
FXuint *hits;
FXint nnames;
if(scene && maxhits){
if(selectHits(hits,nhits,x,y,w,h)){ // FIXME leak
FXMALLOC(&objects,FXGLObject*,nhits+1);
FXASSERT(scene->isMemberOf(FXMETACLASS(FXRbGLObject)) || scene->isMemberOf(FXMETACLASS(FXRbGLShape)));
if(scene->isMemberOf(FXMETACLASS(FXRbGLObject))){
for(i=j=0; nhits>0; i+=hits[i]+3,nhits--){
nnames=hits[i];
obj=dynamic_cast<FXRbGLObject*>(scene)->identify(&hits[4+i],nnames-1);
if(obj!=NULL) objects[j++]=obj;
}
}
else{
for(i=j=0; nhits>0; i+=hits[i]+3,nhits--){
nnames=hits[i];
obj=dynamic_cast<FXRbGLShape*>(scene)->identify(&hits[4+i],nnames-1);
if(obj!=NULL) objects[j++]=obj;
}
}
objects[j]=NULL;
FXFREE(&hits);
}
}
return objects;
}