blender-archive/source/blender/python/api2_2x/Camera.c

/* 
 *
 * ***** 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): Willian P. Germano
 *
 * ***** 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 <Python.h>
#include <DNA_camera_types.h>
#include "constant.h"
#include "gen_utils.h"
#include "modules.h"

#include "Camera.h"


/*****************************************************************************/
/* Python API function prototypes for the Camera module.                     */
/*****************************************************************************/
static PyObject *M_Camera_New (PyObject * self, PyObject * args,
			       PyObject * keywords);
static PyObject *M_Camera_Get (PyObject * self, PyObject * args);

/*****************************************************************************/
/* 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_Camera_doc[] = "The Blender Camera module\n\
\n\
This module provides access to **Camera Data** objects in Blender\n\
\n\
Example::\n\
\n\
  from Blender import Camera, Object, Scene\n\
  c = Camera.New('ortho')      # create new ortho camera data\n\
  c.lens = 35.0                # set lens value\n\
  cur = Scene.getCurrent()     # get current Scene\n\
  ob = Object.New('Camera')    # make camera object\n\
  ob.link(c)                   # link camera data with this object\n\
  cur.link(ob)                 # link object into scene\n\
  cur.setCurrentCamera(ob)     # make this camera the active";

static char M_Camera_New_doc[] =
  "Camera.New (type = 'persp', name = 'CamData'):\n\
        Return a new Camera Data object with the given type and name.";

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

/*****************************************************************************/
/* Python method structure definition for Blender.Camera module:             */
/*****************************************************************************/
struct PyMethodDef M_Camera_methods[] = {
  {"New", (PyCFunction) M_Camera_New, METH_VARARGS | METH_KEYWORDS,
   M_Camera_New_doc},
  {"Get", M_Camera_Get, METH_VARARGS, M_Camera_Get_doc},
  {"get", M_Camera_Get, METH_VARARGS, M_Camera_Get_doc},
  {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Python BPy_Camera methods declarations:                                   */
/*****************************************************************************/
static PyObject *Camera_getIpo (BPy_Camera * self);
static PyObject *Camera_getName (BPy_Camera * self);
static PyObject *Camera_getType (BPy_Camera * self);
static PyObject *Camera_getMode (BPy_Camera * self);
static PyObject *Camera_getLens (BPy_Camera * self);
static PyObject *Camera_getClipStart (BPy_Camera * self);
static PyObject *Camera_getClipEnd (BPy_Camera * self);
static PyObject *Camera_getDrawSize (BPy_Camera * self);
static PyObject *Camera_setIpo (BPy_Camera * self, PyObject * args);
static PyObject *Camera_clearIpo (BPy_Camera * self);
static PyObject *Camera_setName (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setType (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setIntType (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setMode (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setIntMode (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setLens (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setClipStart (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setClipEnd (BPy_Camera * self, PyObject * args);
static PyObject *Camera_setDrawSize (BPy_Camera * self, PyObject * args);

/*****************************************************************************/
/* Python BPy_Camera methods table:                                          */
/*****************************************************************************/
static PyMethodDef BPy_Camera_methods[] = {
  /* name, method, flags, doc */
  {"getIpo", (PyCFunction) Camera_getIpo, METH_NOARGS,
   "() - Return Camera Data Ipo"},
  {"getName", (PyCFunction) Camera_getName, METH_NOARGS,
   "() - Return Camera Data name"},
  {"getType", (PyCFunction) Camera_getType, METH_NOARGS,
   "() - Return Camera type - 'persp':0, 'ortho':1"},
  {"getMode", (PyCFunction) Camera_getMode, METH_NOARGS,
   "() - Return Camera mode flags (or'ed value) -\n"
   "     'showLimits':1, 'showMist':2"},
  {"getLens", (PyCFunction) Camera_getLens, METH_NOARGS,
   "() - Return Camera lens value"},
  {"getClipStart", (PyCFunction) Camera_getClipStart, METH_NOARGS,
   "() - Return Camera clip start value"},
  {"getClipEnd", (PyCFunction) Camera_getClipEnd, METH_NOARGS,
   "() - Return Camera clip end value"},
  {"getDrawSize", (PyCFunction) Camera_getDrawSize, METH_NOARGS,
   "() - Return Camera draw size value"},
  {"setIpo", (PyCFunction) Camera_setIpo, METH_VARARGS,
   "(Blender Ipo) - Set Camera Ipo"},
  {"clearIpo", (PyCFunction) Camera_clearIpo, METH_NOARGS,
   "() - Unlink Ipo from this Camera."},
  {"setName", (PyCFunction) Camera_setName, METH_VARARGS,
   "(s) - Set Camera Data name"},
  {"setType", (PyCFunction) Camera_setType, METH_VARARGS,
   "(s) - Set Camera type, which can be 'persp' or 'ortho'"},
  {"setMode", (PyCFunction) Camera_setMode, METH_VARARGS,
   "(<s<,s>>) - Set Camera mode flag(s): 'showLimits' and 'showMist'"},
  {"setLens", (PyCFunction) Camera_setLens, METH_VARARGS,
   "(f) - Set Camera lens value"},
  {"setClipStart", (PyCFunction) Camera_setClipStart, METH_VARARGS,
   "(f) - Set Camera clip start value"},
  {"setClipEnd", (PyCFunction) Camera_setClipEnd, METH_VARARGS,
   "(f) - Set Camera clip end value"},
  {"setDrawSize", (PyCFunction) Camera_setDrawSize, METH_VARARGS,
   "(f) - Set Camera draw size value"},
  {NULL, NULL, 0, NULL}
};

/*****************************************************************************/
/* Python Camera_Type callback function prototypes:                          */
/*****************************************************************************/
static void Camera_dealloc (BPy_Camera * self);
static int Camera_setAttr (BPy_Camera * self, char *name, PyObject * v);
static int Camera_compare (BPy_Camera * a, BPy_Camera * b);
static PyObject *Camera_getAttr (BPy_Camera * self, char *name);
static PyObject *Camera_repr (BPy_Camera * self);


/*****************************************************************************/
/* Python Camera_Type structure definition:																	 */
/*****************************************************************************/
PyTypeObject Camera_Type = {
  PyObject_HEAD_INIT (NULL) 0,	/* ob_size */
  "Blender Camera",		/* tp_name */
  sizeof (BPy_Camera),		/* tp_basicsize */
  0,				/* tp_itemsize */
  /* methods */
  (destructor) Camera_dealloc,	/* tp_dealloc */
  0,				/* tp_print */
  (getattrfunc) Camera_getAttr,	/* tp_getattr */
  (setattrfunc) Camera_setAttr,	/* tp_setattr */
  (cmpfunc) Camera_compare,	/* tp_compare */
  (reprfunc) Camera_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,
  BPy_Camera_methods,		/* tp_methods */
  0,				/* tp_members */
};

static PyObject *
M_Camera_New (PyObject * self, PyObject * args, PyObject * kwords)
{
  char *type_str = "persp";	/* "persp" is type 0, "ortho" is type 1 */
  char *name_str = "CamData";
  static char *kwlist[] = { "type_str", "name_str", NULL };
  PyObject *pycam;		/* for Camera Data object wrapper in Python */
  Camera *blcam;		/* for actual Camera Data we create in Blender */
  char buf[21];

  /* Parse the arguments passed in by the Python interpreter */
  if (!PyArg_ParseTupleAndKeywords (args, kwords, "|ss", kwlist,
				    &type_str, &name_str))
    /* We expected string(s) (or nothing) as argument, but we didn't get that. */
    return EXPP_ReturnPyObjError (PyExc_AttributeError,
				  "expected zero, one or two strings as arguments");

  blcam = add_camera ();	/* first create the Camera Data in Blender */

  if (blcam)			/* now create the wrapper obj in Python */
    pycam = Camera_CreatePyObject (blcam);
  else
    return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				  "couldn't create Camera Data in Blender");

  /* let's return user count to zero, because ... */
  blcam->id.us = 0;		/* ... add_camera() incref'ed it */
  /* XXX XXX Do this in other modules, too */

  if (pycam == NULL)
    return EXPP_ReturnPyObjError (PyExc_MemoryError,
				  "couldn't create Camera PyObject");

  if (strcmp (type_str, "persp") == 0)	/* default, no need to set, so */
    /*blcam->type = (short)EXPP_CAM_TYPE_PERSP */ ;
  /* we comment this line */
  else if (strcmp (type_str, "ortho") == 0)
    blcam->type = (short) EXPP_CAM_TYPE_ORTHO;
  else
    return EXPP_ReturnPyObjError (PyExc_AttributeError,
				  "unknown camera type");

  if (strcmp (name_str, "CamData") == 0)
    return pycam;
  else
    {				/* user gave us a name for the camera, use it */
      PyOS_snprintf (buf, sizeof (buf), "%s", name_str);
      rename_id (&blcam->id, buf);	/* proper way in Blender */
    }

  return pycam;
}

static PyObject *
M_Camera_Get (PyObject * self, PyObject * args)
{
  char *name = NULL;
  Camera *cam_iter;

  if (!PyArg_ParseTuple (args, "|s", &name))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected string argument (or nothing)");

  cam_iter = G.main->camera.first;

  if (name)
    {				/* (name) - Search camera by name */

      PyObject *wanted_cam = NULL;

      while (cam_iter && !wanted_cam)
	{

	  if (strcmp (name, cam_iter->id.name + 2) == 0)
	    {
	      wanted_cam = Camera_CreatePyObject (cam_iter);
	      break;
	    }

	  cam_iter = cam_iter->id.next;
	}

      if (!wanted_cam)
	{			/* Requested camera doesn't exist */
	  char error_msg[64];
	  PyOS_snprintf (error_msg, sizeof (error_msg),
			 "Camera \"%s\" not found", name);
	  return EXPP_ReturnPyObjError (PyExc_NameError, error_msg);
	}

      return wanted_cam;
    }

  else
    {				/* () - return a list of wrappers for all cameras in the scene */
      int index = 0;
      PyObject *cam_pylist, *pyobj;

      cam_pylist = PyList_New (BLI_countlist (&(G.main->camera)));

      if (!cam_pylist)
	return EXPP_ReturnPyObjError (PyExc_MemoryError,
					"couldn't create PyList");

      while (cam_iter)
	{
	  pyobj = Camera_CreatePyObject (cam_iter);

	  if (!pyobj)
	    return EXPP_ReturnPyObjError (PyExc_MemoryError,
					    "couldn't create Camera PyObject");

	  PyList_SET_ITEM (cam_pylist, index, pyobj);

	  cam_iter = cam_iter->id.next;
	  index++;
	}

      return cam_pylist;
    }
}

PyObject *
Camera_Init (void)
{
  PyObject *submodule;

  Camera_Type.ob_type = &PyType_Type;

  submodule = Py_InitModule3 ("Blender.Camera",
			      M_Camera_methods, M_Camera_doc);

  return submodule;
}

/* Three Python Camera_Type helper functions needed by the Object module: */

PyObject *
Camera_CreatePyObject (Camera * cam)
{
  BPy_Camera *pycam;

  pycam = (BPy_Camera *) PyObject_NEW (BPy_Camera, &Camera_Type);

  if (!pycam)
    return EXPP_ReturnPyObjError (PyExc_MemoryError,
				  "couldn't create BPy_Camera PyObject");

  pycam->camera = cam;

  return (PyObject *) pycam;
}

int
Camera_CheckPyObject (PyObject * pyobj)
{
  return (pyobj->ob_type == &Camera_Type);
}

Camera *
Camera_FromPyObject (PyObject * pyobj)
{
  return ((BPy_Camera *) pyobj)->camera;
}

/*****************************************************************************/
/* Description: Returns the object with the name specified by the argument	 */
/*							name. Note that the calling function has to remove the first */
/*							two characters of the object name. These two characters			 */
/*							specify the type of the object (OB, ME, WO, ...)						 */
/*							The function will return NULL when no object with the given  */
/*							name is found.																							 */
/*****************************************************************************/
Camera *
GetCameraByName (char *name)
{
  Camera *cam_iter;

  cam_iter = G.main->camera.first;
  while (cam_iter)
    {
      if (StringEqual (name, GetIdName (&(cam_iter->id))))
	{
	  return (cam_iter);
	}
      cam_iter = cam_iter->id.next;
    }

  /* There is no camera with the given name */
  return (NULL);
}

/*****************************************************************************/
/* Python BPy_Camera methods:																								 */
/*****************************************************************************/

static PyObject *
Camera_getIpo (BPy_Camera * self)
{
  struct Ipo *ipo = self->camera->ipo;

  if (!ipo)
    {
      Py_INCREF (Py_None);
      return Py_None;
    }

  return Ipo_CreatePyObject (ipo);
}






static PyObject *
Camera_getName (BPy_Camera * self)
{

  PyObject *attr = PyString_FromString (self->camera->id.name + 2);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.name attribute");
}

static PyObject *
Camera_getType (BPy_Camera * self)
{
  PyObject *attr = PyInt_FromLong (self->camera->type);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.type attribute");
}

static PyObject *
Camera_getMode (BPy_Camera * self)
{
  PyObject *attr = PyInt_FromLong (self->camera->flag);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.Mode attribute");
}

static PyObject *
Camera_getLens (BPy_Camera * self)
{
  PyObject *attr = PyFloat_FromDouble (self->camera->lens);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.lens attribute");
}

static PyObject *
Camera_getClipStart (BPy_Camera * self)
{
  PyObject *attr = PyFloat_FromDouble (self->camera->clipsta);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.clipStart attribute");
}

static PyObject *
Camera_getClipEnd (BPy_Camera * self)
{
  PyObject *attr = PyFloat_FromDouble (self->camera->clipend);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.clipEnd attribute");
}

static PyObject *
Camera_getDrawSize (BPy_Camera * self)
{
  PyObject *attr = PyFloat_FromDouble (self->camera->drawsize);

  if (attr)
    return attr;

  return EXPP_ReturnPyObjError (PyExc_RuntimeError,
				"couldn't get Camera.drawSize attribute");
}



static PyObject *
Camera_setIpo (BPy_Camera * self, PyObject * args)
{
  PyObject *pyipo = 0;
  Ipo *ipo = NULL;
  Ipo *oldipo;

  if (!PyArg_ParseTuple (args, "O!", &Ipo_Type, &pyipo))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected Ipo as argument");

  ipo = Ipo_FromPyObject (pyipo);

  if (!ipo)
    return EXPP_ReturnPyObjError (PyExc_RuntimeError, "null ipo!");

  if (ipo->blocktype != ID_CA)
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "this ipo is not a camera data ipo");

  oldipo = self->camera->ipo;
  if (oldipo)
    {
      ID *id = &oldipo->id;
      if (id->us > 0)
	id->us--;
    }

  ((ID *) & ipo->id)->us++;

  self->camera->ipo = ipo;

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_clearIpo (BPy_Camera * self)
{
  Camera *cam = self->camera;
  Ipo *ipo = (Ipo *) cam->ipo;

  if (ipo)
    {
      ID *id = &ipo->id;
      if (id->us > 0)
	id->us--;
      cam->ipo = NULL;

      Py_INCREF (Py_True);
      return Py_True;
    }

  Py_INCREF (Py_False);		/* no ipo found */
  return Py_False;
}

static PyObject *
Camera_setName (BPy_Camera * self, PyObject * args)
{
  char *name;
  char buf[21];

  if (!PyArg_ParseTuple (args, "s", &name))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected string argument");

  PyOS_snprintf (buf, sizeof (buf), "%s", name);

  rename_id (&self->camera->id, buf);

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setType (BPy_Camera * self, PyObject * args)
{
  char *type;

  if (!PyArg_ParseTuple (args, "s", &type))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected string argument");

  if (strcmp (type, "persp") == 0)
    self->camera->type = (short) EXPP_CAM_TYPE_PERSP;
  else if (strcmp (type, "ortho") == 0)
    self->camera->type = (short) EXPP_CAM_TYPE_ORTHO;
  else
    return EXPP_ReturnPyObjError (PyExc_AttributeError,
				  "unknown camera type");

  Py_INCREF (Py_None);
  return Py_None;
}

/* This one is 'private'. It is not really a method, just a helper function for
 * when script writers use Camera.type = t instead of Camera.setType(t), since
 * in the first case t should be an int and in the second a string. So while
 * the method setType expects a string ('persp' or 'ortho') or an empty
 * argument, this function should receive an int (0 or 1). */

static PyObject *
Camera_setIntType (BPy_Camera * self, PyObject * args)
{
  short value;

  if (!PyArg_ParseTuple (args, "h", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected int argument: 0 or 1");

  if (value == 0 || value == 1)
    self->camera->type = value;
  else
    return EXPP_ReturnPyObjError (PyExc_ValueError,
				  "expected int argument: 0 or 1");

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setMode (BPy_Camera * self, PyObject * args)
{
  char *mode_str1 = NULL, *mode_str2 = NULL;
  short flag = 0;

  if (!PyArg_ParseTuple (args, "|ss", &mode_str1, &mode_str2))
    return EXPP_ReturnPyObjError (PyExc_AttributeError,
				  "expected one or two strings as arguments");

  if (mode_str1 != NULL)
    {
      if (strcmp (mode_str1, "showLimits") == 0)
	flag |= (short) EXPP_CAM_MODE_SHOWLIMITS;
      else if (strcmp (mode_str1, "showMist") == 0)
	flag |= (short) EXPP_CAM_MODE_SHOWMIST;
      else
	return EXPP_ReturnPyObjError (PyExc_AttributeError,
				      "first argument is an unknown camera flag");

      if (mode_str2 != NULL)
	{
	  if (strcmp (mode_str2, "showLimits") == 0)
	    flag |= (short) EXPP_CAM_MODE_SHOWLIMITS;
	  else if (strcmp (mode_str2, "showMist") == 0)
	    flag |= (short) EXPP_CAM_MODE_SHOWMIST;
	  else
	    return EXPP_ReturnPyObjError (PyExc_AttributeError,
					  "second argument is an unknown camera flag");
	}
    }

  self->camera->flag = flag;

  Py_INCREF (Py_None);
  return Py_None;
}

/* Another helper function, for the same reason.
 * (See comment before Camera_setIntType above). */

static PyObject *
Camera_setIntMode (BPy_Camera * self, PyObject * args)
{
  short value;

  if (!PyArg_ParseTuple (args, "h", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected int argument in [0,3]");

  if (value >= 0 && value <= 3)
    self->camera->flag = value;
  else
    return EXPP_ReturnPyObjError (PyExc_ValueError,
				  "expected int argument in [0,3]");

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setLens (BPy_Camera * self, PyObject * args)
{
  float value;

  if (!PyArg_ParseTuple (args, "f", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError, "expected float argument");

  self->camera->lens = EXPP_ClampFloat (value,
					EXPP_CAM_LENS_MIN, EXPP_CAM_LENS_MAX);

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setClipStart (BPy_Camera * self, PyObject * args)
{
  float value;

  if (!PyArg_ParseTuple (args, "f", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError, "expected float argument");

  self->camera->clipsta = EXPP_ClampFloat (value,
					   EXPP_CAM_CLIPSTART_MIN,
					   EXPP_CAM_CLIPSTART_MAX);

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setClipEnd (BPy_Camera * self, PyObject * args)
{
  float value;

  if (!PyArg_ParseTuple (args, "f", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError, "expected float argument");

  self->camera->clipend = EXPP_ClampFloat (value,
					   EXPP_CAM_CLIPEND_MIN,
					   EXPP_CAM_CLIPEND_MAX);

  Py_INCREF (Py_None);
  return Py_None;
}

static PyObject *
Camera_setDrawSize (BPy_Camera * self, PyObject * args)
{
  float value;

  if (!PyArg_ParseTuple (args, "f", &value))
    return EXPP_ReturnPyObjError (PyExc_TypeError,
				  "expected a float number as argument");

  self->camera->drawsize = EXPP_ClampFloat (value,
					    EXPP_CAM_DRAWSIZE_MIN,
					    EXPP_CAM_DRAWSIZE_MAX);

  Py_INCREF (Py_None);
  return Py_None;
}

static void
Camera_dealloc (BPy_Camera * self)
{
  PyObject_DEL (self);
}

static PyObject *
Camera_getAttr (BPy_Camera * self, char *name)
{
  PyObject *attr = Py_None;

  if (strcmp (name, "name") == 0)
    attr = PyString_FromString (self->camera->id.name + 2);
  else if (strcmp (name, "type") == 0)
    attr = PyInt_FromLong (self->camera->type);
  else if (strcmp (name, "mode") == 0)
    attr = PyInt_FromLong (self->camera->flag);
  else if (strcmp (name, "lens") == 0)
    attr = PyFloat_FromDouble (self->camera->lens);
  else if (strcmp (name, "clipStart") == 0)
    attr = PyFloat_FromDouble (self->camera->clipsta);
  else if (strcmp (name, "clipEnd") == 0)
    attr = PyFloat_FromDouble (self->camera->clipend);
  else if (strcmp (name, "drawSize") == 0)
    attr = PyFloat_FromDouble (self->camera->drawsize);
  else if (strcmp (name, "ipo") == 0)
    {
      Ipo *ipo = self->camera->ipo;
      if (ipo)
	attr = Ipo_CreatePyObject (ipo);
    }

  else if (strcmp (name, "Types") == 0)
    {
      attr = Py_BuildValue ("{s:h,s:h}", "persp", EXPP_CAM_TYPE_PERSP,
			    "ortho", EXPP_CAM_TYPE_ORTHO);
    }

  else if (strcmp (name, "Modes") == 0)
    {
      attr =
	Py_BuildValue ("{s:h,s:h}", "showLimits", EXPP_CAM_MODE_SHOWLIMITS,
		       "showMist", EXPP_CAM_MODE_SHOWMIST);
    }

  else if (strcmp (name, "__members__") == 0)
    {
      attr = Py_BuildValue ("[s,s,s,s,s,s,s,s,s,s]",
			    "name", "type", "mode", "lens", "clipStart",
			    "ipo", "clipEnd", "drawSize", "Types", "Modes");
    }

  if (!attr)
    return EXPP_ReturnPyObjError (PyExc_MemoryError,
				  "couldn't create PyObject");

  if (attr != Py_None)
    return attr;		/* member attribute found, return it */

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

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

/* We're playing a trick on the Python API users here.	Even if they use
 * Camera.member = val instead of Camera.setMember(val), we end up using the
 * function anyway, since it already has error checking, clamps to the right
 * interval and updates the Blender Camera structure when necessary. */

/* First we put "value" in a tuple, because we want to pass it to functions
 * that only accept PyTuples. */
  valtuple = Py_BuildValue ("(O)", value);

  if (!valtuple)		/* everything OK with our PyObject? */
    return EXPP_ReturnIntError (PyExc_MemoryError,
				"CameraSetAttr: couldn't create PyTuple");

/* Now we just compare "name" with all possible BPy_Camera member variables */
  if (strcmp (name, "name") == 0)
    error = Camera_setName (self, valtuple);
  else if (strcmp (name, "type") == 0)
    error = Camera_setIntType (self, valtuple);	/* special case */
  else if (strcmp (name, "mode") == 0)
    error = Camera_setIntMode (self, valtuple);	/* special case */
  else if (strcmp (name, "lens") == 0)
    error = Camera_setLens (self, valtuple);
  else if (strcmp (name, "clipStart") == 0)
    error = Camera_setClipStart (self, valtuple);
  else if (strcmp (name, "clipEnd") == 0)
    error = Camera_setClipEnd (self, valtuple);
  else if (strcmp (name, "drawSize") == 0)
    error = Camera_setDrawSize (self, valtuple);

  else
    {				/* Error */
      Py_DECREF (valtuple);

      if ((strcmp (name, "Types") == 0) ||	/* user tried to change a */
	  (strcmp (name, "Modes") == 0))	/* constant dict type ... */
	return EXPP_ReturnIntError (PyExc_AttributeError,
				    "constant dictionary -- cannot be changed");

      else			/* ... or no member with the given name was found */
	return EXPP_ReturnIntError (PyExc_KeyError, "attribute not found");
    }

/* valtuple won't be returned to the caller, so we need to DECREF it */
  Py_DECREF (valtuple);

  if (error != Py_None)
    return -1;

/* Py_None was incref'ed by the called Camera_set* function. We probably
 * don't need to decref Py_None (!), but since Python/C API manual tells us
 * to treat it like any other PyObject regarding ref counting ... */
  Py_DECREF (Py_None);
  return 0;			/* normal exit */
}

static int
Camera_compare (BPy_Camera * a, BPy_Camera * b)
{
  Camera *pa = a->camera, *pb = b->camera;
  return (pa == pb) ? 0 : -1;
}

static PyObject *
Camera_repr (BPy_Camera * self)
{
  return PyString_FromFormat ("[Camera \"%s\"]", self->camera->id.name + 2);
}