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/***********************************************************************
FONCTION :
----------
File OpenGl_pick :
REMARQUES:
----------
HISTORIQUE DES MODIFICATIONS :
--------------------------------
xx-xx-xx : xxx ; Creation.
25-06-96 : FMN ; Suppression utilisation de glScissor.
03-07-96 : FMN ; Suppression TelGetViewportAtLocation.
************************************************************************/
/* Workaround for internal bcc32 compiler bug. */
/* Starting from bcc32 v6.40 this flag should be passed as a compiler option. */
#if defined(__BORLANDC__) && __BORLANDC__ < 0x0640 /* bcc32 v6.40 */
#pragma option -x-
#endif
/*----------------------------------------------------------------------*/
/*
* Includes
*/
#include <OpenGl_tgl_all.hxx>
#include <stdio.h>
#include <GL/gl.h>
#include <OpenGl_tsm.hxx>
#include <OpenGl_tsm_ws.hxx>
#include <OpenGl_telem_pick.hxx>
#include <OpenGl_telem_view.hxx>
#include <OpenGl_Memory.hxx>
/*----------------------------------------------------------------------*/
/*
* Constantes
*/
#define ARRAY_GROW_SIZE 10
/*----------------------------------------------------------------------*/
/*
* Variables statiques
*/
static GLuint *tgl_pick_buffer; /* buffer to be given to GL */
static Tint tgl_pick_bufsize;
/*----------------------------------------------------------------------*/
static TStatus
allocate( Tint *cur_size, Tint size_reqd, void **arr, Tint elem_size )
{
size_reqd = ( ( size_reqd / ARRAY_GROW_SIZE ) + 1 ) * ARRAY_GROW_SIZE;
if( !( *cur_size ) ) {
*arr = malloc( size_reqd * elem_size );
memset( *arr, 0, size_reqd * elem_size );
}
else
#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530)
*arr = realloc( *arr, size_reqd * elem_size );
#else
*arr = (void*)cmn_resizemem<char>( (char*)*arr, size_reqd * elem_size );
#endif
if( !(*arr) )
return TFailure;
*cur_size = size_reqd;
return TSuccess;
}
static TStatus
Initialize( Tint wsid, Tint *view_stid )
{
Tint depth;
CMN_KEY_DATA key;
Tint buf_siz_reqd = 0;
TsmGetWSAttri( wsid, WSViewStid, &key );
if( key.ldata == -1 )
return TFailure;
*view_stid = key.ldata;
TsmGetStructureDepth( *view_stid, &depth );
buf_siz_reqd = depth*6 + 2;
if( tgl_pick_bufsize < buf_siz_reqd )
{
if( allocate( &tgl_pick_bufsize, buf_siz_reqd, (void **)&tgl_pick_buffer,
sizeof( int ) ) == TFailure )
return TFailure;
}
return TSuccess;
}
/*----------------------------------------------------------------------*/
static void
fill_pick_report( tel_pick_report rep, TPickOrder order, Tint depth )
{
Tint i, j;
TEL_PACKED_NAME pn;
rep->depth = tgl_pick_buffer[0]/6;
if( order == TTopFirst )
{
for( i = 0, j = 3; i < ( Tint )(tgl_pick_buffer[0]/6) && i < depth; i++ )
{ /* skip hit numb. zmin, zmax -> j = 3 */
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].struct_id = pn.i;
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].pick_id = pn.i;
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].el_num = pn.i;
}
}
else
{
Tint is, js;
is = rep->depth < depth ? rep->depth : depth;
js = 3 + ( rep->depth - is )*6; /* skip hit numb. zmin, zmax -> j = 3 */
is--;
for( i = is, j = js; i >= 0; i-- )
{
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].struct_id = pn.i;
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].pick_id = pn.i;
pn.s[0] = tgl_pick_buffer[j++];
pn.s[1] = tgl_pick_buffer[j++];
rep->pick_path[i].el_num = pn.i;
}
}
return;
}
/*----------------------------------------------------------------------*/
Tint TglVpBeingPicked = -1;
TStatus
TPick( Tint Wsid, Tint x, Tint y, Tfloat apw, Tfloat aph,
TPickOrder order, Tint depth, tel_pick_report rep )
{
Tint vid;
TSM_ELEM_DATA data;
CMN_KEY key;
CMN_KEY_DATA key1;
TEL_VIEW_REP ovrep, vrep;
if( Initialize( Wsid, &(data.ldata) ) == TFailure )
return TFailure;
TglActiveWs = Wsid;
key.id = Wsid;
{
/* TStatus stat; */
Tfloat xsf, ysf, x1, x2, y1, y2, W, H, xm, xp, ym, yp, cx, cy;
Tint err;
TEL_VIEW_MAPPING map;
vid = Wsid;
TglVpBeingPicked = vid;
TelGetViewRepresentation( Wsid, vid, &vrep );
ovrep = vrep;
TsmGetWSAttri( Wsid, WSWidth, &key1 );
W = ( float )key1.ldata;
TsmGetWSAttri( Wsid, WSHeight, &key1 );
H = ( float )key1.ldata;
xm = vrep.extra.map.window.xmax, xp = vrep.extra.map.window.xmin;
ym = vrep.extra.map.window.ymax, yp = vrep.extra.map.window.ymin;
cx = xm + xp, cx /= 2;
cy = ym + yp, cy /= 2;
x1 = x - apw/2, x2 = x1 + apw, y1 = y - aph/2, y2 = y1 + aph;
xsf = xm - xp, xsf /= W;
ysf = ym - yp, ysf /= H;
x1 = xsf * x1 + xp;
y1 = ysf * y1 + yp;
x2 = xsf * x2 + xp;
y2 = ysf * y2 + yp;
map = vrep.extra.map;
map.window.xmin = x1, map.window.xmax = x2;
map.window.ymin = y1, map.window.ymax = y2;
TelEvalViewMappingMatrixPick( &map, &err, vrep.mapping_matrix, cx, cy );
if( err )
printf( "Error in Mapping pick\n" );
if( TelSetViewRepresentation( Wsid, vid, &vrep ) == TFailure )
printf( "Error in Set vrep for pick\n" );
}
glMatrixMode(GL_MODELVIEW);
tgl_pick_buffer[0] = 0;
glSelectBuffer( tgl_pick_bufsize , tgl_pick_buffer);
glRenderMode(GL_SELECT);
glLoadName(55);
TsmSendMessage( TelExecuteStructure, PickTraverse, data, 1, &key );
glRenderMode(GL_RENDER);
TglVpBeingPicked = -1;
/* print( ); */
fill_pick_report( rep, order, depth );
TelSetViewRepresentation( Wsid, vid, &ovrep );
return TSuccess;
}
/*----------------------------------------------------------------------*/
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