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Build.c

/*
 * $Id: Build.c,v 1.8 2004/09/25 20:30:39 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 "Build.h"
#include "Effect.h"
#include "gen_utils.h"

#include <BLI_arithb.h>
#include <BLI_blenlib.h>
#include <BKE_main.h>
#include <BKE_global.h>
#include <BKE_object.h>
#include <BKE_library.h>

#include <stdio.h>

/*****************************************************************************/
/* Python BPy_Build methods table:                                           */
/*****************************************************************************/
static PyMethodDef BPy_Build_methods[] = {
      {"getLen", ( PyCFunction ) Build_getLen,
       METH_NOARGS, "()-Return Build len"},
      {"setLen", ( PyCFunction ) Build_setLen, METH_VARARGS,
       "()- Sets Build len"},
      {"getSfra", ( PyCFunction ) Build_getSfra,
       METH_NOARGS, "()-Return Build sfra"},
      {"setSfra", ( PyCFunction ) Build_setSfra, METH_VARARGS,
       "()- Sets Build sfra"},
      {NULL, NULL, 0, NULL}
};


/*****************************************************************************/
/* Python Build_Type structure definition:                                   */
/*****************************************************************************/
PyTypeObject Build_Type = {
      PyObject_HEAD_INIT( NULL ) 
      0,    /* ob_size */
      "Build",          /* tp_name */
      sizeof( BPy_Build ),    /* tp_basicsize */
      0,                /* tp_itemsize */
      /* methods */
      ( destructor ) BuildDeAlloc,  /* tp_dealloc */
      0,                /* tp_print */
      ( getattrfunc ) BuildGetAttr, /* tp_getattr */
      ( setattrfunc ) BuildSetAttr, /* tp_setattr */
      0,                /* tp_compare */
      ( reprfunc ) BuildRepr, /* 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_Build_methods,      /* tp_methods */
      0,                /* tp_members */
};



/*****************************************************************************/
/* The following string definitions are used for documentation strings.      */
/* In Python these will be written to the console when doing a               */
/* Blender.Camera.__doc__                                                    */
/*****************************************************************************/

static char M_Build_doc[] = "The Blender Build module\n\
This module provides access to **Build Data** objects in Blender\n";

static char M_Build_New_doc[] = "Build.New ():\n\
        Return a new Build Data object with the given type and name.";

static char M_Build_Get_doc[] = "Build.Get (name = None):\n\
        Return the build data with the given 'name', None if not found, or\n\
        Return a list with all Build Data objects in the current scene,\n\
        if no argument was given.";

/*****************************************************************************/
/* Function:              M_Build_New                                        */
/* Python equivalent:     Blender.Effect.Build.New                           */
/*****************************************************************************/
PyObject *M_Build_New( PyObject * self, PyObject * args )
{
      int type = EFF_BUILD;
      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_Build_Get                                        */
/* Python equivalent:     Blender.Effect.Build.Get                           */
/*****************************************************************************/
PyObject *M_Build_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_Build *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_BUILD )
                              continue;
                        eff = eff->next;
                        if( !eff )
                              return ( EXPP_ReturnPyObjError
                                     ( PyExc_AttributeError,
                                       "object not created" ) );
                  }
                  wanted_eff =
                        ( BPy_Build * ) PyObject_NEW( BPy_Build,
                                                &Build_Type );
                  wanted_eff->build = eff;
                  return ( PyObject * ) wanted_eff;
            }
            object_iter = object_iter->id.next;
      }
      Py_INCREF( Py_None );
      return Py_None;
}



struct PyMethodDef M_Build_methods[] = {
      {"New", ( PyCFunction ) M_Build_New, METH_VARARGS, M_Build_New_doc},
      {"Get", M_Build_Get, METH_VARARGS, M_Build_Get_doc},
      {"get", M_Build_Get, METH_VARARGS, M_Build_Get_doc},
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Function:              Build_Init                                         */
/*****************************************************************************/

PyObject *Build_Init( void )
{
      PyObject *submodule;

      Build_Type.ob_type = &PyType_Type;
      submodule =
            Py_InitModule3( "Blender.Build", M_Build_methods,
                        M_Build_doc );
      return ( submodule );
}

/*****************************************************************************/
/* Python BPy_Build methods:                                                */
/*****************************************************************************/

PyObject *Build_getLen( BPy_Build * self )
{
      BuildEff *ptr = ( BuildEff * ) self->build;
      return PyFloat_FromDouble( ptr->len );
}


PyObject *Build_setLen( BPy_Build * self, PyObject * args )
{
      BuildEff *ptr = ( BuildEff * ) self->build;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
                                    "expected float argument" ) );
      ptr->len = val;
      Py_INCREF( Py_None );
      return Py_None;
}


PyObject *Build_getSfra( BPy_Build * self )
{
      BuildEff *ptr = ( BuildEff * ) self->build;
      return PyFloat_FromDouble( ptr->sfra );
}

PyObject *Build_setSfra( BPy_Build * self, PyObject * args )
{
      BuildEff *ptr = ( BuildEff * ) self->build;
      float val = 0;
      if( !PyArg_ParseTuple( args, "f", &val ) )
            return ( EXPP_ReturnPyObjError
                   ( PyExc_AttributeError, "expected float argument" ) );

      ptr->sfra = val;
      Py_INCREF( Py_None );
      return Py_None;
}

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

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

PyObject *BuildGetAttr( BPy_Build * self, char *name )
{
      if( !strcmp( name, "sfra" ) )
            return Build_getSfra( self );
      if( !strcmp( name, "len" ) )
            return Build_getLen( self );
      return Py_FindMethod( BPy_Build_methods, ( PyObject * ) self, name );
}

/*****************************************************************************/
/* Function:    BuildSetAttr                                                 */
/* Description: This is a callback function for the BPy_Build type. It   */
/*              sets Build Data attributes (member variables).  */
/*****************************************************************************/
int BuildSetAttr( BPy_Build * self, char *name, PyObject * value )
{
      PyObject *valtuple;
      PyObject *error = NULL;
      valtuple = Py_BuildValue( "(N)", value );

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

      if( !strcmp( name, "sfra" ) )
            error = Build_setSfra( self, valtuple );
      else if( !strcmp( name, "len" ) )
            error = Build_setLen( self, valtuple );

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

      /*  Py_DECREF(valtuple); */

      if( error != Py_None )
            return -1;

      Py_DECREF( Py_None );
      return 0;
}

/*****************************************************************************/
/* Function:    BuildPrint                                                   */
/* Description: This is a callback function for the BPy_Build type. It       */
/*              builds a meaninful string to 'print' build objects.          */
/*****************************************************************************/
/*
int BuildPrint(BPy_Build *self, FILE *fp, int flags) 
{ 
  return 0;
}
*/
/*****************************************************************************/
/* Function:    BuildRepr                                                    */
/* Description: This is a callback function for the BPy_Build type. It       */
/*              builds a meaninful string to represent build objects.        */
/*****************************************************************************/
PyObject *BuildRepr( BPy_Build * self )
{
      return PyString_FromString( "Build effect" );
}

PyObject *BuildCreatePyObject( struct Effect * build )
{
      BPy_Build *blen_object;


      blen_object = ( BPy_Build * ) PyObject_NEW( BPy_Build, &Build_Type );

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

}

int BuildCheckPyObject( PyObject * py_obj )
{
      return ( py_obj->ob_type == &Build_Type );
}


struct Build *BuildFromPyObject( PyObject * py_obj )
{
      BPy_Build *blen_obj;

      blen_obj = ( BPy_Build * ) py_obj;
      return ( ( struct Build * ) blen_obj->build );

}

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