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Effect.c

/*
 * $Id: Effect.c,v 1.10 2004/10/31 04:09:19 ianwill Exp $
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * This is a new part of Blender.
 *
 * Contributor(s): Jacques Guignot
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 */
#include "Effect.h"
#include "Build.h"
#include "Particle.h"
#include "Wave.h"

/*****************************************************************************/
/* Python BPy_Effect methods table:                                            */
/*****************************************************************************/
static PyMethodDef BPy_Effect_methods[] = {
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Python Effect_Type structure definition:                                  */
/*****************************************************************************/
PyTypeObject Effect_Type = {
      PyObject_HEAD_INIT( NULL )
            0,          /* ob_size */
      "Effect",         /* tp_name */
      sizeof( BPy_Effect ),   /* tp_basicsize */
      0,                /* tp_itemsize */
      /* methods */
      ( destructor ) EffectDeAlloc, /* tp_dealloc */
      0,                /* tp_print */
      ( getattrfunc ) EffectGetAttr,      /* tp_getattr */
      ( setattrfunc ) EffectSetAttr,      /* tp_setattr */
      0,                /* tp_compare */
      ( reprfunc ) EffectRepr,      /* tp_repr */
      0,                /* tp_as_number */
      0,                /* tp_as_sequence */
      0,                /* tp_as_mapping */
      0,                /* tp_as_hash */
      0, 0, 0, 0, 0, 0,
      0,                /* tp_doc */
      0, 0, 0, 0, 0, 0,
      BPy_Effect_methods,     /* tp_methods */
      0,                /* tp_members */
};

/*****************************************************************************/
/* Python method structure definition for Blender.Effect module:             */
/*****************************************************************************/




struct PyMethodDef M_Effect_methods[] = {
      {"New", ( PyCFunction ) M_Effect_New, METH_VARARGS, NULL},
      {"Get", M_Effect_Get, METH_VARARGS, NULL},
      {"get", M_Effect_Get, METH_VARARGS, NULL},
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Function:              M_Effect_New                                       */
/* Python equivalent:     Blender.Effect.New                                 */
/*****************************************************************************/
PyObject *M_Effect_New( PyObject * self, PyObject * args )
{
      BPy_Effect *pyeffect;
      Effect *bleffect = 0;
      int type = -1;
      char *btype = NULL;
      Py_INCREF( Py_None );
      return Py_None;
      if( !PyArg_ParseTuple( args, "s", &btype ) )
            return ( EXPP_ReturnPyObjError( PyExc_TypeError,
                                    "expected type argument(wave,build or particle)" ) );
      if( !strcmp( btype, "wave" ) )
            type = EFF_WAVE;
      if( !strcmp( btype, "build" ) )
            type = EFF_BUILD;
      if( !strcmp( btype, "particle" ) )
            type = EFF_PARTICLE;
      if( type == -1 )
            return ( EXPP_ReturnPyObjError( PyExc_TypeError,
                                    "unknown type " ) );


      bleffect = add_effect( type );
      if( bleffect == NULL )
            return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
                                    "couldn't create Effect Data in Blender" ) );

      pyeffect = ( BPy_Effect * ) PyObject_NEW( BPy_Effect, &Effect_Type );


      if( pyeffect == NULL )
            return ( EXPP_ReturnPyObjError( PyExc_MemoryError,
                                    "couldn't create Effect Data object" ) );

      pyeffect->effect = bleffect;

      return ( PyObject * ) pyeffect;
}

/*****************************************************************************/
/* Function:              M_Effect_Get                                       */
/* Python equivalent:     Blender.Effect.Get                                 */
/*****************************************************************************/
PyObject *M_Effect_Get( PyObject * self, PyObject * args )
{
      /*arguments : string object name
         int : position of effect in the obj's effect list  */
      char *name = NULL;
      Object *object_iter;
      Effect *eff;
      BPy_Effect *wanted_eff;
      int num = -1, i;

      if( !PyArg_ParseTuple( args, "|si", &name, &num ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected string int argument" ) );

      object_iter = G.main->object.first;

      if( !object_iter )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "Scene contains no object" ) );

      if( name ) { /* (name, num = -1) - try to find the given object */

            while( object_iter ) {

                  if( !strcmp( name, object_iter->id.name + 2 ) ) {

                        eff = object_iter->effect.first; /*can be NULL: None will be returned*/

                        if (num >= 0) { /* return effect in given num position if available */

                              for( i = 0; i < num; i++ ) {
                                    if (!eff) break;
                                    eff = eff->next;
                              }

                              if (eff) {
                                    wanted_eff = (BPy_Effect *)PyObject_NEW(BPy_Effect, &Effect_Type);
                                    wanted_eff->effect = eff;
                                    return ( PyObject * ) wanted_eff;
                              } else { /* didn't find any effect in the given position */
                                    Py_INCREF(Py_None);
                                    return Py_None;
                              }
                        }

                        else {/*return a list with all effects linked to the given object*/
                                          /* this was pointed by Stephen Swaney */
                              PyObject *effectlist = PyList_New( 0 );

                              while (eff) {
                                    BPy_Effect *found_eff = (BPy_Effect *)PyObject_NEW(BPy_Effect,
                                          &Effect_Type);
                                    found_eff->effect = eff;
                                    PyList_Append( effectlist, ( PyObject * ) found_eff );
                                    Py_DECREF((PyObject *)found_eff); /* PyList_Append incref'ed it */
                                    eff = eff->next;
                              }
                              return effectlist;
                        }
                  }
                  
                  object_iter = object_iter->id.next;
            }

            if (!object_iter)
                  return EXPP_ReturnPyObjError (PyExc_AttributeError,
                        "no such object");
      }
      
      else { /* () - return a list with all effects currently in Blender */
            PyObject *effectlist = PyList_New( 0 );

            while( object_iter ) {
                  if( object_iter->effect.first != NULL ) {
                        eff = object_iter->effect.first;
                        while( eff ) {
                              BPy_Effect *found_eff =
                                    ( BPy_Effect * )
                                    PyObject_NEW( BPy_Effect,
                                                &Effect_Type );
                              found_eff->effect = eff;
                              PyList_Append( effectlist,
                                           ( PyObject * )
                                           found_eff );
                              Py_DECREF((PyObject *)found_eff);
                              eff = eff->next;
                        }
                  }
                  object_iter = object_iter->id.next;
            }
            return effectlist;
      }
      Py_INCREF( Py_None );
      return Py_None;
}

/*****************************************************************************/
/* Function:              Effect_Init                                        */
/*****************************************************************************/


PyObject *Build_Init( void );
PyObject *Wave_Init( void );
PyObject *Particle_Init( void );

PyObject *Effect_Init( void )
{
      PyObject *submodule, *dict;

      Effect_Type.ob_type = &PyType_Type;

      submodule = Py_InitModule3( "Blender.Effect", M_Effect_methods, 0 );
      dict = PyModule_GetDict( submodule );
      PyDict_SetItemString( dict, "Wave", Wave_Init(  ) );
      PyDict_SetItemString( dict, "Build", Build_Init(  ) );
      PyDict_SetItemString( dict, "Particle", Particle_Init(  ) );
      return ( submodule );
}

/*****************************************************************************/
/* Python BPy_Effect methods:                                       */
/*****************************************************************************/

PyObject *Effect_getType( BPy_Effect * self )
{
      PyObject *attr = PyInt_FromLong( ( long ) self->effect->type );
      if( attr )
            return attr;
      return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
                              "couldn't get mode attribute" ) );
}


PyObject *Effect_setType( BPy_Effect * self, PyObject * args )
{
      int value;
      if( !PyArg_ParseTuple( args, "i", &value ) )
            return ( EXPP_ReturnPyObjError( PyExc_TypeError,
                                    "expected an int as argument" ) );
      self->effect->type = value;
      Py_INCREF( Py_None );
      return Py_None;
}

PyObject *Effect_getFlag( BPy_Effect * self )
{
      PyObject *attr = PyInt_FromLong( ( long ) self->effect->flag );
      if( attr )
            return attr;
      return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
                              "couldn't get mode attribute" ) );
}


PyObject *Effect_setFlag( BPy_Effect * self, PyObject * args )
{
      int value;
      if( !PyArg_ParseTuple( args, "i", &value ) )
            return ( EXPP_ReturnPyObjError( PyExc_TypeError,
                                    "expected an int as argument" ) );
      self->effect->flag = value;
      Py_INCREF( Py_None );
      return Py_None;
}





/*****************************************************************************/
/* Function:    EffectDeAlloc                                                */
/* Description: This is a callback function for the BPy_Effect type. It is   */
/*              the destructor function.                                     */
/*****************************************************************************/
void EffectDeAlloc( BPy_Effect * self )
{
      PyObject_DEL( self );
}

/*****************************************************************************/
/* Function:    EffectGetAttr                                                */
/* Description: This is a callback function for the BPy_Effect type. It is   */
/*              the function that accesses BPy_Effect "member variables" and */
/*              methods.                                                     */
/*****************************************************************************/


PyObject *EffectGetAttr( BPy_Effect * self, char *name )
{
      switch ( self->effect->type ) {
      case EFF_BUILD:
            return BuildGetAttr( ( BPy_Build * ) self, name );
      case EFF_WAVE:
            return WaveGetAttr( ( BPy_Wave * ) self, name );
      case EFF_PARTICLE:
            return ParticleGetAttr( ( BPy_Particle * ) self, name );
      }

      return Py_FindMethod( BPy_Effect_methods, ( PyObject * ) self, name );
}

/*****************************************************************************/
/* Function:    EffectSetAttr                                                */
/* Description: This is a callback function for the BPy_Effect type. It   */
/*              sets Effect Data attributes (member variables). */
/*****************************************************************************/


int EffectSetAttr( BPy_Effect * self, char *name, PyObject * value )
{
      switch ( self->effect->type ) {
      case EFF_BUILD:
            return BuildSetAttr( ( BPy_Build * ) self, name, value );
      case EFF_WAVE:
            return WaveSetAttr( ( BPy_Wave * ) self, name, value );
      case EFF_PARTICLE:
            return ParticleSetAttr( ( BPy_Particle * ) self, name, value );
      }
      return 0;         /* normal exit */
}

/*****************************************************************************/
/* Function:    EffectPrint                                                  */
/* Description: This is a callback function for the BPy_Effect type. It      */
/*              builds a meaninful string to 'print' effcte objects.         */
/*****************************************************************************/
/*
int EffectPrint(BPy_Effect *self, FILE *fp, int flags) 
{ 
if (self->effect->type == EFF_BUILD)puts("Effect Build");
if (self->effect->type == EFF_PARTICLE)puts("Effect Particle");
if (self->effect->type == EFF_WAVE)puts("Effect Wave");
 
  return 0;
}
*/
/*****************************************************************************/
/* Function:    EffectRepr                                                   */
/* Description: This is a callback function for the BPy_Effect type. It      */
/*              builds a meaninful string to represent effcte objects.       */
/*****************************************************************************/

PyObject *EffectRepr( BPy_Effect * self )
{
      char *str = "";
      if( self->effect->type == EFF_BUILD )
            str = "Effect Build";
      if( self->effect->type == EFF_PARTICLE )
            str = "Effect Particle";
      if( self->effect->type == EFF_WAVE )
            str = "Effect Wave";
      return PyString_FromString( str );
}

PyObject *EffectCreatePyObject( struct Effect * effect )
{
      BPy_Effect *blen_object;

      blen_object =
            ( BPy_Effect * ) PyObject_NEW( BPy_Effect, &Effect_Type );

      if( blen_object == NULL ) {
            return ( NULL );
      }
      blen_object->effect = effect;
      return ( ( PyObject * ) blen_object );

}

int EffectCheckPyObject( PyObject * py_obj )
{
      return ( py_obj->ob_type == &Effect_Type );
}


struct Effect *EffectFromPyObject( PyObject * py_obj )
{
      BPy_Effect *blen_obj;

      blen_obj = ( BPy_Effect * ) py_obj;
      return ( ( Effect * ) blen_obj->effect );

}

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