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MTex.c

/* 
 * $Id: MTex.c,v 1.5 2004/10/07 19:25:39 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): Alex Mole
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
*/

#include <BKE_main.h>
#include <BKE_global.h>
#include <BKE_object.h>
#include <BKE_library.h>
#include <BLI_blenlib.h>
#include <BKE_texture.h>
#include <BKE_utildefines.h>

#include "MTex.h"
#include "Texture.h"
#include "constant.h"
#include "gen_utils.h"


/*****************************************************************************/
/* Python BPy_MTex methods declarations:                                     */
/*****************************************************************************/
static PyObject *MTex_setTex( BPy_MTex * self, PyObject * args );

/*****************************************************************************/
/* Python method structure definition for Blender.Texture.MTex module:       */
/*****************************************************************************/
struct PyMethodDef M_MTex_methods[] = {
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Python BPy_MTex methods table:                                            */
/*****************************************************************************/
static PyMethodDef BPy_MTex_methods[] = {
      /* name, method, flags, doc */
      {"setTex", ( PyCFunction ) MTex_setTex, METH_VARARGS,
       "(i) - Set MTex Texture"},
      {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Python MTex_Type callback function prototypes:                            */
/*****************************************************************************/
static void MTex_dealloc( BPy_MTex * self );
static int MTex_setAttr( BPy_MTex * self, char *name, PyObject * v );
static int MTex_compare( BPy_MTex * a, BPy_MTex * b );
static PyObject *MTex_getAttr( BPy_MTex * self, char *name );
static PyObject *MTex_repr( BPy_MTex * self );


/*****************************************************************************/
/* Python MTex_Type structure definition:                                    */
/*****************************************************************************/
PyTypeObject MTex_Type = {
      PyObject_HEAD_INIT( NULL ) 
      0,    /* ob_size */
      "Blender MTex",         /* tp_name */
      sizeof( BPy_MTex ),     /* tp_basicsize */
      0,                /* tp_itemsize */
      /* methods */
      ( destructor ) MTex_dealloc,  /* tp_dealloc */
      0,                /* tp_print */
      ( getattrfunc ) MTex_getAttr, /* tp_getattr */
      ( setattrfunc ) MTex_setAttr, /* tp_setattr */
      ( cmpfunc ) MTex_compare,     /* tp_compare */
      ( reprfunc ) MTex_repr, /* 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,
      0,                /* tp_methods */
      0,                /* tp_members */
};


PyObject *MTex_Init( void )
{
      PyObject *submodule;

      MTex_Type.ob_type = &PyType_Type;

      submodule = Py_InitModule( "Blender.Texture.MTex", M_MTex_methods );

      return submodule;
}

PyObject *MTex_CreatePyObject( MTex * mtex )
{
      BPy_MTex *pymtex;

      pymtex = ( BPy_MTex * ) PyObject_NEW( BPy_MTex, &MTex_Type );
      if( !pymtex )
            return EXPP_ReturnPyObjError( PyExc_MemoryError,
                                    "couldn't create BPy_MTex PyObject" );

      pymtex->mtex = mtex;
      return ( PyObject * ) pymtex;
}

MTex *MTex_FromPyObject( PyObject * pyobj )
{
      return ( ( BPy_MTex * ) pyobj )->mtex;
}


int MTex_CheckPyObject( PyObject * pyobj )
{
      return ( pyobj->ob_type == &MTex_Type );
}


/*****************************************************************************/
/* Python BPy_MTex methods:                                                  */
/*****************************************************************************/

static PyObject *MTex_setTex( BPy_MTex * self, PyObject * args )
{
      BPy_Texture *pytex = NULL;
      if( !PyArg_ParseTuple( args, "O!", &Texture_Type, &pytex ) )
            return EXPP_ReturnPyObjError( PyExc_TypeError,
                                    "expected Texture argument" );

      if( self->mtex->tex )
            self->mtex->tex->id.us--;

      self->mtex->tex = Texture_FromPyObject( ( PyObject * ) pytex );

      Py_INCREF( Py_None );
      return Py_None;
}

static void MTex_dealloc( BPy_MTex * self )
{
      PyObject_DEL( self );
}

static PyObject *MTex_getAttr( BPy_MTex * self, char *name )
{
      if( STREQ( name, "tex" ) ) {
            if( self->mtex->tex )
                  return Texture_CreatePyObject( self->mtex->tex );
            else {
                  Py_INCREF( Py_None );
                  return Py_None;
            }
      } else if( STREQ( name, "texco" ) )
            return PyInt_FromLong( self->mtex->texco );
      else if( STREQ( name, "mapto" ) )
            return PyInt_FromLong( self->mtex->mapto );

      else if( STREQ( name, "__members__" ) )
            return Py_BuildValue( "[s,s,s]", "tex", "texco", "mapto" );

      /* not an attribute, search the methods table */
      return Py_FindMethod( BPy_MTex_methods, ( PyObject * ) self, name );
}

static int MTex_setAttr( BPy_MTex * self, char *name, PyObject * value )
{
      PyObject *valtuple;
      PyObject *error = NULL;

      /* Put "value" in a tuple, because we want to pass it to functions  *
       * that only accept PyTuples.                                       */
      valtuple = Py_BuildValue( "(O)", value );
      if( !valtuple )
            return EXPP_ReturnIntError( PyExc_MemoryError,
                                  "MTex_setAttr: couldn't create PyTuple" );

      if( STREQ( name, "tex" ) )
            error = MTex_setTex( self, valtuple );
      else if( STREQ( name, "texco" ) ) {
            if( PyInt_Check( value ) ) {
                  int texco = PyInt_AsLong( value );
                  /* TODO: sanity-check this input! */
                  self->mtex->texco = texco;
                  Py_INCREF( Py_None );   /* because we decref it below */
                  error = Py_None;
            }
      } else if( STREQ( name, "mapto" ) ) {
            if( PyInt_Check( value ) ) {
                  int mapto = PyInt_AsLong( value );
                  /* TODO: sanity-check this input! */
                  self->mtex->mapto = mapto;
                  Py_INCREF( Py_None );   /* because we decref it below */
                  error = Py_None;
            }
      }

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

      Py_DECREF( valtuple );

      if( error != Py_None )
            return -1;

      /* Py_None was INCREF'd by the set*() function, so we need to DECREF it */
      Py_DECREF( Py_None );

      return 0;
}

static int MTex_compare( BPy_MTex * a, BPy_MTex * b )
{
      return ( a->mtex == b->mtex ) ? 0 : -1;
}

static PyObject *MTex_repr( BPy_MTex * self )
{
      return PyString_FromFormat( "[MTex]" );
}

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