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/***********************************************************************
FONCTION :
----------
file OpenGl_togl_viewmapping.c :
REMARQUES:
----------
HISTORIQUE DES MODIFICATIONS :
--------------------------------
xx-xx-xx : CAL ; Creation.
10-07-96 : FMN ; Suppression #define sur calcul matrice
25-07-96 : FMN ; Suppression code inutile
18-11-98 : FMN ; Correction sur la gestion de la perspective (cf Programming Guide)
09-12-98 : FMN ; Correction erreur de compilation sur WNT
17-12-98 : FMN ; Correction erreur de compilation sur WNT
************************************************************************/
/*----------------------------------------------------------------------*/
/*
* Includes
*/
#include <OpenGl_tgl_all.hxx>
#include <InterfaceGraphic_Graphic3d.hxx>
#include <InterfaceGraphic_Visual3d.hxx>
#include <OpenGl_tgl_vis.hxx>
#include <OpenGl_tgl_funcs.hxx>
#include <GL/gl.h>
/*----------------------------------------------------------------------*/
/*
* Variable globales
*/
EXPORT extern GLboolean env_walkthrow; /* definit dans OpenGl_togl_begin.c */
/*----------------------------------------------------------------------*/
int EXPORT
call_togl_viewmapping
(
CALL_DEF_VIEW * aview,
int wait
)
{
int i, j;
float ratio;
Tint waitwait;
Tint err_ind;
TEL_VIEW_MAPPING Map;
err_ind = 0;
ratio = aview->DefWindow.dy / aview->DefWindow.dx;
Map.window.xmin = aview->Mapping.WindowLimit.um;
Map.window.ymin = aview->Mapping.WindowLimit.vm;
Map.window.xmax = aview->Mapping.WindowLimit.uM;
Map.window.ymax = aview->Mapping.WindowLimit.vM;
Map.viewport.xmin = ( float )0.0;
Map.viewport.xmax = ( ( float )1. < ( float )1./ratio ? ( float )1. : ( float )1./ratio );
Map.viewport.ymin = ( float )0.0;
Map.viewport.ymax = ( ( float )1. < ratio ? ( float )1. : ratio );
Map.viewport.zmin = ( float )0.0;
Map.viewport.zmax = ( float )1.0;
/* projection type */
switch( aview->Mapping.Projection )
{
case 0 :
Map.proj = CALL_PHIGS_TYPE_PERSPECT;
break;
case 1 :
Map.proj = CALL_PHIGS_TYPE_PARAL;
break;
}
/* projection reference point */
Map.prp[0] = aview->Mapping.ProjectionReferencePoint.x;
Map.prp[1] = aview->Mapping.ProjectionReferencePoint.y;
if (env_walkthrow)
Map.prp[2] = aview->Mapping.ProjectionReferencePoint.z;
else
Map.prp[2] = aview->Mapping.FrontPlaneDistance +
aview->Mapping.ProjectionReferencePoint.z;
/* view plane distance */
Map.vpd = aview->Mapping.ViewPlaneDistance;
/* back plane distance */
Map.bpd = aview->Mapping.BackPlaneDistance;
/* front plane distance */
Map.fpd = aview->Mapping.FrontPlaneDistance;
/* use user-defined matrix */
if ( aview->Mapping.IsCustomMatrix ) {
for( i = 0; i < 4; i++ )
for( j = 0; j < 4; j++ )
call_viewrep.mapping_matrix[i][j] = aview->Mapping.ProjectionMatrix[i][j];
}
else
TelEvalViewMappingMatrix( &Map, &err_ind, call_viewrep.mapping_matrix );
if( !err_ind && aview->WsId != -1 )
{
call_viewrep.extra.map = Map;
if( !wait )
{
waitwait = 1;
call_togl_vieworientation( aview, waitwait );
call_togl_cliplimit( aview, waitwait );
TelSetViewRepresentation( aview->WsId, aview->ViewId, &call_viewrep );
call_togl_ratio_window( aview );
}
}
return err_ind;
}
/*----------------------------------------------------------------------*/
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