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/**
* $Id: KX_PyMath.h,v 1.4 2004/07/17 05:28:21 kester 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.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
* Initialize Python thingies.
*/
#ifndef __KX_PYMATH_H__
#define __KX_PYMATH_H__
#include "MT_Point2.h"
#include "MT_Point3.h"
#include "MT_Vector2.h"
#include "MT_Vector3.h"
#include "MT_Vector4.h"
#include "MT_Matrix3x3.h"
#include "MT_Matrix4x4.h"
#include "KX_Python.h"
static unsigned int Size(const MT_Matrix4x4&) { return 4; }
static unsigned int Size(const MT_Matrix3x3&) { return 3; }
static unsigned int Size(const MT_Tuple2&) { return 2; }
static unsigned int Size(const MT_Tuple3&) { return 3; }
static unsigned int Size(const MT_Tuple4&) { return 4; }
/**
* Converts the given python matrix to an MT class.
*/
template<class T>
bool PyMatTo(PyObject* pymat, T& mat)
{
bool noerror = true;
mat.setIdentity();
if (PySequence_Check(pymat))
{
unsigned int rows = PySequence_Size(pymat);
for (unsigned int y = 0; y < rows && y < Size(mat); y++)
{
PyObject *pyrow = PySequence_GetItem(pymat, y); /* new ref */
if (PySequence_Check(pyrow))
{
unsigned int cols = PySequence_Size(pyrow);
for( unsigned int x = 0; x < cols && x < Size(mat); x++)
{
PyObject *item = PySequence_GetItem(pyrow, x); /* new ref */
mat[y][x] = PyFloat_AsDouble(item);
Py_DECREF(item);
}
} else
noerror = false;
Py_DECREF(pyrow);
}
} else
noerror = false;
return noerror;
}
/**
* Converts a python list to a MT class.
*/
template<class T>
bool PyVecTo(PyObject* pyval, T& vec)
{
if (PySequence_Check(pyval))
{
unsigned int numitems = PySequence_Size(pyval);
for (unsigned int x = 0; x < numitems && x < Size(vec); x++)
{
PyObject *item = PySequence_GetItem(pyval, x); /* new ref */
vec[x] = PyFloat_AsDouble(item);
Py_DECREF(item);
}
return true;
}
return false;
}
/**
* Converts a python argument to an MT class.
* This paramater expects arguments as passed to a python method.
*/
template<class T>
bool PyVecArgTo(PyObject* args, T& vec)
{
PyObject* pylist;
if (PyArg_ParseTuple(args,"O",&pylist))
return PyVecTo(pylist, vec);
return false;
}
/**
* Converts an MT_Matrix4x4 to a python object.
*/
PyObject* PyObjectFrom(const MT_Matrix4x4 &mat);
/**
* Converts an MT_Matrix3x3 to a python object.
*/
PyObject* PyObjectFrom(const MT_Matrix3x3 &mat);
/**
* Converts an MT_Tuple2 to a python object.
*/
PyObject* PyObjectFrom(const MT_Tuple2 &vec);
/**
* Converts an MT_Tuple3 to a python object
*/
PyObject* PyObjectFrom(const MT_Tuple3 &vec);
/**
* Converts an MT_Tuple4 to a python object.
*/
PyObject* PyObjectFrom(const MT_Tuple4 &pos);
/**
* True if the given PyObject can be converted to an MT_Matrix
* @param rank = 3 (for MT_Matrix3x3) or 4 (for MT_Matrix4x4)
*/
bool PyObject_IsMT_Matrix(PyObject *pymat, unsigned int rank);
#endif
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