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Particle.c

/*
 * $Id: Particle.c,v 1.7 2004/09/25 20:30:40 stiv 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 "Particle.h"
#include "Effect.h"

/*****************************************************************************/
/* Python BPy_Particle methods table:                                        */
/*****************************************************************************/
static PyMethodDef BPy_Particle_methods[] = {
      {"getType", ( PyCFunction ) Effect_getType,
       METH_NOARGS, "() - Return Effect type"},
      {"setType", ( PyCFunction ) Effect_setType,
       METH_VARARGS, "() - Set Effect type"},
      {"getFlag", ( PyCFunction ) Effect_getFlag,
       METH_NOARGS, "() - Return Effect flag"},
      {"setFlag", ( PyCFunction ) Effect_setFlag,
       METH_VARARGS, "() - Set Effect flag"},
      {"getStartTime", ( PyCFunction ) Particle_getSta,
       METH_NOARGS, "()-Return particle start time"},
      {"setStartTime", ( PyCFunction ) Particle_setSta, METH_VARARGS,
       "()- Sets particle start time"},
      {"getEndTime", ( PyCFunction ) Particle_getEnd,
       METH_NOARGS, "()-Return particle end time"},
      {"setEndTime", ( PyCFunction ) Particle_setEnd, METH_VARARGS,
       "()- Sets particle end time"},
      {"getLifetime", ( PyCFunction ) Particle_getLifetime,
       METH_NOARGS, "()-Return particle life time"},
      {"setLifetime", ( PyCFunction ) Particle_setLifetime, METH_VARARGS,
       "()- Sets particle life time "},
      {"getNormfac", ( PyCFunction ) Particle_getNormfac,
       METH_NOARGS, "()-Return particle life time"},
      {"setNormfac", ( PyCFunction ) Particle_setNormfac, METH_VARARGS,
       "()- Sets particle life time "},
      {"getObfac", ( PyCFunction ) Particle_getObfac,
       METH_NOARGS, "()-Return particle life time"},
      {"setObfac", ( PyCFunction ) Particle_setObfac, METH_VARARGS,
       "()- Sets particle life time "},
      {"getRandfac", ( PyCFunction ) Particle_getRandfac,
       METH_NOARGS, "()-Return particle life time"},
      {"setRandfac", ( PyCFunction ) Particle_setRandfac, METH_VARARGS,
       "()- Sets particle life time "},
      {"getTexfac", ( PyCFunction ) Particle_getTexfac,
       METH_NOARGS, "()-Return particle life time"},
      {"setTexfac", ( PyCFunction ) Particle_setTexfac, METH_VARARGS,
       "()- Sets particle life time "},
      {"getRandlife", ( PyCFunction ) Particle_getRandlife,
       METH_NOARGS, "()-Return particle life time"},
      {"setRandlife", ( PyCFunction ) Particle_setRandlife, METH_VARARGS,
       "()- Sets particle life time "},
      {"getNabla", ( PyCFunction ) Particle_getNabla,
       METH_NOARGS, "()-Return particle life time"},
      {"setNabla", ( PyCFunction ) Particle_setNabla, METH_VARARGS,
       "()- Sets particle life time "},
      {"getVectsize", ( PyCFunction ) Particle_getVectsize,
       METH_NOARGS, "()-Return particle life time"},
      {"setVectsize", ( PyCFunction ) Particle_setVectsize, METH_VARARGS,
       "()- Sets particle life time "},
      {"getTotpart", ( PyCFunction ) Particle_getTotpart,
       METH_NOARGS, "()-Return particle life time"},
      {"setTotpart", ( PyCFunction ) Particle_setTotpart, METH_VARARGS,
       "()- Sets particle life time "},
      {"getTotkey", ( PyCFunction ) Particle_getTotkey,
       METH_NOARGS, "()-Return particle life time"},
      {"setTotkey", ( PyCFunction ) Particle_setTotkey, METH_VARARGS,
       "()- Sets particle life time "},
      {"getSeed", ( PyCFunction ) Particle_getSeed,
       METH_NOARGS, "()-Return particle life time"},
      {"setSeed", ( PyCFunction ) Particle_setSeed, METH_VARARGS,
       "()- Sets particle life time "},
      {"getForce", ( PyCFunction ) Particle_getForce,
       METH_NOARGS, "()-Return particle life time"},
      {"setForce", ( PyCFunction ) Particle_setForce, METH_VARARGS,
       "()- Sets particle life time "},
      {"getMult", ( PyCFunction ) Particle_getMult,
       METH_NOARGS, "()-Return particle life time"},
      {"setMult", ( PyCFunction ) Particle_setMult, METH_VARARGS,
       "()- Sets particle life time "},
      {"getLife", ( PyCFunction ) Particle_getLife,
       METH_NOARGS, "()-Return particle life time"},
      {"setLife", ( PyCFunction ) Particle_setLife, METH_VARARGS,
       "()- Sets particle life time "},
      {"getMat", ( PyCFunction ) Particle_getMat,
       METH_NOARGS, "()-Return particle life time"},
      {"setMat", ( PyCFunction ) Particle_setMat, METH_VARARGS,
       "()- Sets particle life time "},
      {"getChild", ( PyCFunction ) Particle_getChild,
       METH_NOARGS, "()-Return particle life time"},
      {"setChild", ( PyCFunction ) Particle_setChild, METH_VARARGS,
       "()- Sets particle life time "},
      {"getDefvec", ( PyCFunction ) Particle_getDefvec,
       METH_NOARGS, "()-Return particle life time"},
      {"setDefvec", ( PyCFunction ) Particle_setDefvec, METH_VARARGS,
       "()- Sets particle life time "},
      {NULL, NULL, 0, NULL}
};


/*****************************************************************************/
/* Python Particle_Type structure definition:                                */
/*****************************************************************************/

PyTypeObject Particle_Type = {
      PyObject_HEAD_INIT( NULL )
            0,
      "Particle",
      sizeof( BPy_Particle ),
      0,

      ( destructor ) ParticleDeAlloc,
      0,
      ( getattrfunc ) ParticleGetAttr,
      ( setattrfunc ) ParticleSetAttr,
      0,
      ( reprfunc ) ParticleRepr,
      0,
      0,
      0,
      0,
      0, 0, 0, 0, 0, 0,
      0,
      0, 0, 0, 0, 0, 0,
      BPy_Particle_methods,
      0,
};
/*****************************************************************************/
/* The following string definitions are used for documentation strings.      */
/* In Python these will be written to the console when doing a               */
/* Blender.Particle.__doc__                                                  */
/*****************************************************************************/
char M_Particle_doc[] = "The Blender Particle module\n\n\
This module provides access to **Object Data** in Blender.\n\
Functions :\n\
      New(opt name) : creates a new part object with the given name (optional)\n\
      Get(name) : retreives a particle  with the given name (mandatory)\n\
      get(name) : same as Get. Kept for compatibility reasons";
char M_Particle_New_doc[] = "";
char M_Particle_Get_doc[] = "xxx";
/*****************************************************************************/
/* Python method structure definition for Blender.Particle module:           */
/*****************************************************************************/
struct PyMethodDef M_Particle_methods[] = {
      {"New", ( PyCFunction ) M_Particle_New, METH_VARARGS,
       M_Particle_New_doc},
      {"Get", M_Particle_Get, METH_VARARGS, M_Particle_Get_doc},
      {"get", M_Particle_Get, METH_VARARGS, M_Particle_Get_doc},
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Function:              M_Particle_New                                     */
/* Python equivalent:     Blender.Effect.Particle.New                        */
/*****************************************************************************/
PyObject *M_Particle_New( PyObject * self, PyObject * args )
{
      int type = EFF_PARTICLE;
      BPy_Effect *pyeffect;
      Effect *bleffect = 0;


      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;
      return 0;
}

/*****************************************************************************/
/* Function:              M_Particle_Get                                     */
/* Python equivalent:     Blender.Effect.Particle.Get                        */
/*****************************************************************************/
PyObject *M_Particle_Get( PyObject * self, PyObject * args )
{
      /*arguments : string object name
         int : position of effect in the obj's effect list  */
      char *name = 0;
      Object *object_iter;
      Effect *eff;
      BPy_Particle *wanted_eff;
      int num, 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" ) );

      while( object_iter ) {
            if( strcmp( name, object_iter->id.name + 2 ) ) {
                  object_iter = object_iter->id.next;
                  continue;
            }


            if( object_iter->effect.first != NULL ) {
                  eff = object_iter->effect.first;
                  for( i = 0; i < num; i++ ) {
                        if( eff->type != EFF_PARTICLE )
                              continue;
                        eff = eff->next;
                        if( !eff )
                              return ( EXPP_ReturnPyObjError
                                     ( PyExc_AttributeError,
                                       "bject" ) );
                  }
                  wanted_eff =
                        ( BPy_Particle * ) PyObject_NEW( BPy_Particle,
                                                 &Particle_Type );
                  wanted_eff->particle = eff;
                  return ( PyObject * ) wanted_eff;
            }
            object_iter = object_iter->id.next;
      }
      Py_INCREF( Py_None );
      return Py_None;
}

/*****************************************************************************/
/* Function:              Particle_Init                                      */
/*****************************************************************************/
PyObject *Particle_Init( void )
{
      PyObject *submodule;
      Particle_Type.ob_type = &PyType_Type;
      submodule =
            Py_InitModule3( "Blender.Particle", M_Particle_methods,
                        M_Particle_doc );
      return ( submodule );
}

/*****************************************************************************/
/* Python BPy_Particle methods:                                                */
/*****************************************************************************/

PyObject *Particle_getSta( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->sta );
}



PyObject *Particle_setSta( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->sta = val;
      Py_INCREF( Py_None );
      return Py_None;
}

PyObject *Particle_getEnd( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->end );
}



PyObject *Particle_setEnd( BPy_Particle * self, PyObject * args )
{
      float val = 0;
      PartEff *ptr = ( PartEff * ) self->particle;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->end = val;
      Py_INCREF( Py_None );
      return Py_None;
}

PyObject *Particle_getLifetime( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->lifetime );
}



PyObject *Particle_setLifetime( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->lifetime = val;
      Py_INCREF( Py_None );
      return Py_None;
}


PyObject *Particle_getNormfac( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->normfac );
}



PyObject *Particle_setNormfac( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->normfac = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getObfac( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->obfac );
}



PyObject *Particle_setObfac( BPy_Particle * self, PyObject * args )
{
      float val = 0;
      PartEff *ptr = ( PartEff * ) self->particle;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->obfac = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getRandfac( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->randfac );
}



PyObject *Particle_setRandfac( BPy_Particle * self, PyObject * args )
{
      float val = 0;
      PartEff *ptr = ( PartEff * ) self->particle;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->randfac = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getTexfac( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->texfac );
}



PyObject *Particle_setTexfac( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->texfac = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getRandlife( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->randlife );
}



PyObject *Particle_setRandlife( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->randlife = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getNabla( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->nabla );
}



PyObject *Particle_setNabla( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->nabla = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getVectsize( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyFloat_FromDouble( ptr->vectsize );
}



PyObject *Particle_setVectsize( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->vectsize = val;
      Py_INCREF( Py_None );
      return Py_None;
}


PyObject *Particle_getTotpart( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyInt_FromLong( ptr->totpart );
}



PyObject *Particle_setTotpart( BPy_Particle * self, PyObject * args )
{
      int val = 0;
      PartEff *ptr = ( PartEff * ) self->particle;
      if( !PyArg_ParseTuple( args, "i", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected int argument" ) );
      ptr->totpart = val;
      Py_INCREF( Py_None );
      return Py_None;
}


PyObject *Particle_getTotkey( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyInt_FromLong( ptr->totkey );
}



PyObject *Particle_setTotkey( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      int val = 0;
      if( !PyArg_ParseTuple( args, "i", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected int argument" ) );
      ptr->totkey = val;
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getSeed( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return PyInt_FromLong( ptr->seed );
}



PyObject *Particle_setSeed( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      int val = 0;
      if( !PyArg_ParseTuple( args, "i", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected int argument" ) );
      ptr->seed = val;
      Py_INCREF( Py_None );
      return Py_None;
}

PyObject *Particle_getForce( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f)", ptr->force[0], ptr->force[1],
                        ptr->force[2] );
}


PyObject *Particle_setForce( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[3];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      /*
         if (!PyArg_ParseTuple(args, "fff", val,val+1,val+2 ))
         return(EXPP_ReturnPyObjError(PyExc_AttributeError,\
         "expected three float arguments"));
       */
      ptr->force[0] = val[0];
      ptr->force[1] = val[1];
      ptr->force[2] = val[2];
      Py_INCREF( Py_None );
      return Py_None;
}

PyObject *Particle_getMult( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f,f)",
                        ptr->mult[0], ptr->mult[1], ptr->mult[2],
                        ptr->mult[3] );
}


PyObject *Particle_setMult( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[4];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      val[3] = PyFloat_AsDouble( PyTuple_GetItem( args, 3 ) );
      ptr->mult[0] = val[0];
      ptr->mult[1] = val[1];
      ptr->mult[2] = val[2];
      ptr->mult[3] = val[3];
      Py_INCREF( Py_None );
      return Py_None;
}




PyObject *Particle_getLife( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f,f)",
                        ptr->life[0], ptr->life[1], ptr->life[2],
                        ptr->life[3] );
}


PyObject *Particle_setLife( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[4];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      val[3] = PyFloat_AsDouble( PyTuple_GetItem( args, 3 ) );
      ptr->life[0] = val[0];
      ptr->life[1] = val[1];
      ptr->life[2] = val[2];
      ptr->life[3] = val[3];
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getChild( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f,f)",
                        ptr->child[0], ptr->child[1], ptr->child[2],
                        ptr->child[3] );
}


PyObject *Particle_setChild( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[4];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      val[3] = PyFloat_AsDouble( PyTuple_GetItem( args, 3 ) );
      ptr->child[0] = val[0];
      ptr->child[1] = val[1];
      ptr->child[2] = val[2];
      ptr->child[3] = val[3];
      Py_INCREF( Py_None );
      return Py_None;
}



PyObject *Particle_getMat( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f,f)",
                        ptr->mat[0], ptr->mat[1], ptr->mat[2],
                        ptr->mat[3] );
}


PyObject *Particle_setMat( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[4];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      val[3] = PyFloat_AsDouble( PyTuple_GetItem( args, 3 ) );
      ptr->mat[0] = val[0];
      ptr->mat[1] = val[1];
      ptr->mat[2] = val[2];
      ptr->mat[3] = val[3];
      Py_INCREF( Py_None );
      return Py_None;
}


PyObject *Particle_getDefvec( BPy_Particle * self )
{

      PartEff *ptr = ( PartEff * ) self->particle;
      return Py_BuildValue( "(f,f,f)",
                        ptr->defvec[0], ptr->defvec[1], ptr->defvec[2] );
}


PyObject *Particle_setDefvec( BPy_Particle * self, PyObject * args )
{
      PartEff *ptr = ( PartEff * ) self->particle;
      float val[3];
      if( PyTuple_Size( args ) == 1 )
            args = PyTuple_GetItem( args, 0 );
      val[0] = PyFloat_AsDouble( PyTuple_GetItem( args, 0 ) );
      val[1] = PyFloat_AsDouble( PyTuple_GetItem( args, 1 ) );
      val[2] = PyFloat_AsDouble( PyTuple_GetItem( args, 2 ) );
      ptr->defvec[0] = val[0];
      ptr->defvec[1] = val[1];
      ptr->defvec[2] = val[2];
      Py_INCREF( Py_None );
      return Py_None;
}



/*****************************************************************************/
/* Function:    ParticleDeAlloc                                              */
/* Description: This is a callback function for the BPy_Particle type. It is   */
/*              the destructor function.                                     */
/*****************************************************************************/
void ParticleDeAlloc( BPy_Particle * self )
{
      PartEff *ptr = ( PartEff * ) self;
      PyObject_DEL( ptr );
}

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


PyObject *ParticleGetAttr( BPy_Particle * self, char *name )
{

      if( strcmp( name, "seed" ) == 0 )
            return Particle_getSeed( self );
      else if( strcmp( name, "nabla" ) == 0 )
            return Particle_getNabla( self );
      else if( strcmp( name, "sta" ) == 0 )
            return Particle_getSta( self );
      else if( strcmp( name, "end" ) == 0 )
            return Particle_getEnd( self );
      else if( strcmp( name, "lifetime" ) == 0 )
            return Particle_getLifetime( self );
      else if( strcmp( name, "normfac" ) == 0 )
            return Particle_getNormfac( self );
      else if( strcmp( name, "obfac" ) == 0 )
            return Particle_getObfac( self );
      else if( strcmp( name, "randfac" ) == 0 )
            return Particle_getRandfac( self );
      else if( strcmp( name, "texfac" ) == 0 )
            return Particle_getTexfac( self );
      else if( strcmp( name, "randlife" ) == 0 )
            return Particle_getRandlife( self );
      else if( strcmp( name, "vectsize" ) == 0 )
            return Particle_getVectsize( self );
      else if( strcmp( name, "totpart" ) == 0 )
            return Particle_getTotpart( self );
      else if( strcmp( name, "force" ) == 0 )
            return Particle_getForce( self );
      else if( strcmp( name, "mult" ) == 0 )
            return Particle_getMult( self );
      else if( strcmp( name, "life" ) == 0 )
            return Particle_getLife( self );
      else if( strcmp( name, "child" ) == 0 )
            return Particle_getChild( self );
      else if( strcmp( name, "mat" ) == 0 )
            return Particle_getMat( self );
      else if( strcmp( name, "defvec" ) == 0 )
            return Particle_getDefvec( self );


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

/*****************************************************************************/
/* Function:    ParticleSetAttr                                              */
/* Description: This is a callback function for the BPy_Particle type.     */
/*              It is the  function that sets Particle Data attributes     */
/*              (member vars)    */
/*****************************************************************************/
int ParticleSetAttr( BPy_Particle * self, char *name, PyObject * value )
{

      PyObject *valtuple;
      PyObject *error = NULL;

      valtuple = Py_BuildValue( "(N)", value );

      if( !valtuple )
            return EXPP_ReturnIntError( PyExc_MemoryError,
                                  "ParticleSetAttr: couldn't create PyTuple" );

      if( strcmp( name, "seed" ) == 0 )
            error = Particle_setSeed( self, valtuple );
      else if( strcmp( name, "nabla" ) == 0 )
            error = Particle_setNabla( self, valtuple );
      else if( strcmp( name, "sta" ) == 0 )
            error = Particle_setSta( self, valtuple );
      else if( strcmp( name, "end" ) == 0 )
            error = Particle_setEnd( self, valtuple );
      else if( strcmp( name, "lifetime" ) == 0 )
            error = Particle_setLifetime( self, valtuple );
      else if( strcmp( name, "normfac" ) == 0 )
            error = Particle_setNormfac( self, valtuple );
      else if( strcmp( name, "obfac" ) == 0 )
            error = Particle_setObfac( self, valtuple );
      else if( strcmp( name, "randfac" ) == 0 )
            error = Particle_setRandfac( self, valtuple );
      else if( strcmp( name, "texfac" ) == 0 )
            error = Particle_setTexfac( self, valtuple );
      else if( strcmp( name, "randlife" ) == 0 )
            error = Particle_setRandlife( self, valtuple );
      else if( strcmp( name, "nabla" ) == 0 )
            error = Particle_setNabla( self, valtuple );
      else if( strcmp( name, "vectsize" ) == 0 )
            error = Particle_setVectsize( self, valtuple );
      else if( strcmp( name, "totpart" ) == 0 )
            error = Particle_setTotpart( self, valtuple );
      else if( strcmp( name, "seed" ) == 0 )
            error = Particle_setSeed( self, valtuple );
      else if( strcmp( name, "force" ) == 0 )
            error = Particle_setForce( self, valtuple );
      else if( strcmp( name, "mult" ) == 0 )
            error = Particle_setMult( self, valtuple );
      else if( strcmp( name, "life" ) == 0 )
            error = Particle_setLife( self, valtuple );
      else if( strcmp( name, "child" ) == 0 )
            error = Particle_setChild( self, valtuple );
      else if( strcmp( name, "mat" ) == 0 )
            error = Particle_setMat( self, valtuple );
      else if( strcmp( name, "defvec" ) == 0 )
            error = Particle_setDefvec( self, valtuple );

      else {
            Py_DECREF( valtuple );

            if( ( strcmp( name, "Types" ) == 0 ) ||
                ( strcmp( name, "Modes" ) == 0 ) )
                  return ( EXPP_ReturnIntError( PyExc_AttributeError,
                                          "constant dictionary -- cannot be changed" ) );

            else
                  return ( EXPP_ReturnIntError( PyExc_KeyError,
                                          "attribute not found" ) );
      }

      /*Py_DECREF(valtuple); */
      if( error != Py_None )
            return -1;

      Py_DECREF( Py_None );
      return 0;
}

/*****************************************************************************/
/* Function:    ParticlePrint                                                */
/* Description: This is a callback function for the BPy_Particle type. It    */
/*              particles a meaninful string to 'print' particle objects.    */
/*****************************************************************************/
/*
int ParticlePrint(BPy_Particle *self, FILE *fp, int flags) 
{ 
  printf("Hi, I'm a particle!");    
  return 0;
}
*/
/*****************************************************************************/
/* Function:    ParticleRepr                                                 */
/* Description: This is a callback function for the BPy_Particle type. It    */
/*              particles a meaninful string to represent particle objects.  */
/*****************************************************************************/
PyObject *ParticleRepr( BPy_Particle * self )
{
      return PyString_FromString( "Particle" );
}

PyObject *ParticleCreatePyObject( struct Effect * particle )
{
      BPy_Particle *blen_object;


      blen_object =
            ( BPy_Particle * ) PyObject_NEW( BPy_Particle,
                                     &Particle_Type );

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

}

int ParticleCheckPyObject( PyObject * py_obj )
{
      return ( py_obj->ob_type == &Particle_Type );
}


struct Particle *ParticleFromPyObject( PyObject * py_obj )
{
      BPy_Particle *blen_obj;

      blen_obj = ( BPy_Particle * ) py_obj;
      return ( ( struct Particle * ) blen_obj->particle );

}

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