forked from bartvdbraak/blender
251 lines
7.0 KiB
C++
251 lines
7.0 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file KX_PyMath.h
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* \ingroup ketsji
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* \brief Initialize Python thingies.
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*/
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#ifndef __KX_PYMATH_H__
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#define __KX_PYMATH_H__
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#include "MT_Point2.h"
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#include "MT_Point3.h"
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#include "MT_Vector2.h"
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#include "MT_Vector3.h"
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#include "MT_Vector4.h"
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#include "MT_Matrix3x3.h"
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#include "MT_Matrix4x4.h"
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#include "KX_Python.h"
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#include "PyObjectPlus.h"
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#ifdef WITH_PYTHON
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#ifdef USE_MATHUTILS
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extern "C" {
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#include "../../blender/python/mathutils/mathutils.h" /* so we can have mathutils callbacks */
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}
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#endif
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inline unsigned int Size(const MT_Matrix4x4&) { return 4; }
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inline unsigned int Size(const MT_Matrix3x3&) { return 3; }
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inline unsigned int Size(const MT_Tuple2&) { return 2; }
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inline unsigned int Size(const MT_Tuple3&) { return 3; }
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inline unsigned int Size(const MT_Tuple4&) { return 4; }
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/**
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* Converts the given python matrix (column-major) to an MT class (row-major).
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*/
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template<class T>
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bool PyMatTo(PyObject* pymat, T& mat)
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{
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bool noerror = true;
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mat.setIdentity();
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if (PySequence_Check(pymat))
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{
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unsigned int cols = PySequence_Size(pymat);
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if (cols != Size(mat))
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return false;
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for (unsigned int x = 0; noerror && x < cols; x++)
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{
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PyObject *pycol = PySequence_GetItem(pymat, x); /* new ref */
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if (!PyErr_Occurred() && PySequence_Check(pycol))
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{
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unsigned int rows = PySequence_Size(pycol);
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if (rows != Size(mat))
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noerror = false;
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else
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{
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for( unsigned int y = 0; y < rows; y++)
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{
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PyObject *item = PySequence_GetItem(pycol, y); /* new ref */
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mat[y][x] = PyFloat_AsDouble(item);
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Py_DECREF(item);
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}
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}
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} else
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noerror = false;
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Py_DECREF(pycol);
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}
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} else
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noerror = false;
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if (noerror==false)
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PyErr_SetString(PyExc_TypeError, "could not be converted to a matrix (sequence of sequences)");
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return noerror;
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}
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/**
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* Converts a python sequence to a MT class.
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*/
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template<class T>
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bool PyVecTo(PyObject* pyval, T& vec)
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{
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#ifdef USE_MATHUTILS
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/* no need for BaseMath_ReadCallback() here, reading the sequences will do this */
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if(VectorObject_Check(pyval)) {
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VectorObject *pyvec= (VectorObject *)pyval;
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if(BaseMath_ReadCallback(pyvec) == -1) {
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return false; /* exception raised */
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}
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if (pyvec->size != Size(vec)) {
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PyErr_Format(PyExc_AttributeError, "error setting vector, %d args, should be %d", pyvec->size, Size(vec));
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return false;
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}
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vec.setValue((float *) pyvec->vec);
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return true;
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}
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else if(QuaternionObject_Check(pyval)) {
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QuaternionObject *pyquat= (QuaternionObject *)pyval;
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if(BaseMath_ReadCallback(pyquat) == -1) {
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return false; /* exception raised */
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}
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if (4 != Size(vec)) {
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PyErr_Format(PyExc_AttributeError, "error setting vector, %d args, should be %d", 4, Size(vec));
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return false;
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}
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/* xyzw -> wxyz reordering is done by PyQuatTo */
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vec.setValue((float *) pyquat->quat);
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return true;
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}
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else if(EulerObject_Check(pyval)) {
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EulerObject *pyeul= (EulerObject *)pyval;
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if(BaseMath_ReadCallback(pyeul) == -1) {
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return false; /* exception raised */
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}
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if (3 != Size(vec)) {
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PyErr_Format(PyExc_AttributeError, "error setting vector, %d args, should be %d", 3, Size(vec));
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return false;
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}
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vec.setValue((float *) pyeul->eul);
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return true;
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} else
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#endif
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if(PyTuple_Check(pyval))
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{
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unsigned int numitems = PyTuple_GET_SIZE(pyval);
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if (numitems != Size(vec)) {
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PyErr_Format(PyExc_AttributeError, "error setting vector, %d args, should be %d", numitems, Size(vec));
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return false;
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}
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for (unsigned int x = 0; x < numitems; x++)
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vec[x] = PyFloat_AsDouble(PyTuple_GET_ITEM(pyval, x)); /* borrow ref */
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if (PyErr_Occurred()) {
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PyErr_SetString(PyExc_AttributeError, "one or more of the items in the sequence was not a float");
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return false;
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}
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return true;
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}
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else if (PyObject_TypeCheck(pyval, (PyTypeObject *)&PyObjectPlus::Type))
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{ /* note, include this check because PySequence_Check does too much introspection
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* on the PyObject (like getting its __class__, on a BGE type this means searching up
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* the parent list each time only to discover its not a sequence.
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* GameObjects are often used as an alternative to vectors so this is a common case
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* better to do a quick check for it, likely the error below will be ignored.
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*
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* This is not 'correct' since we have proxy type CListValues's which could
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* contain floats/ints but there no cases of CValueLists being this way
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*/
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PyErr_Format(PyExc_AttributeError, "expected a sequence type");
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return false;
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}
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else if (PySequence_Check(pyval))
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{
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unsigned int numitems = PySequence_Size(pyval);
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if (numitems != Size(vec)) {
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PyErr_Format(PyExc_AttributeError, "error setting vector, %d args, should be %d", numitems, Size(vec));
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return false;
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}
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for (unsigned int x = 0; x < numitems; x++)
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{
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PyObject *item = PySequence_GetItem(pyval, x); /* new ref */
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vec[x] = PyFloat_AsDouble(item);
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Py_DECREF(item);
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}
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if (PyErr_Occurred()) {
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PyErr_SetString(PyExc_AttributeError, "one or more of the items in the sequence was not a float");
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return false;
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}
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return true;
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} else
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{
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PyErr_Format(PyExc_AttributeError, "not a sequence type, expected a sequence of numbers size %d", Size(vec));
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}
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return false;
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}
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bool PyQuatTo(PyObject* pyval, MT_Quaternion &qrot);
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bool PyOrientationTo(PyObject* pyval, MT_Matrix3x3 &mat, const char *error_prefix);
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/**
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* Converts an MT_Matrix4x4 to a python object.
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*/
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PyObject* PyObjectFrom(const MT_Matrix4x4 &mat);
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/**
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* Converts an MT_Matrix3x3 to a python object.
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*/
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PyObject* PyObjectFrom(const MT_Matrix3x3 &mat);
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/**
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* Converts an MT_Tuple2 to a python object.
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*/
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PyObject* PyObjectFrom(const MT_Tuple2 &vec);
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/**
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* Converts an MT_Tuple3 to a python object
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*/
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PyObject* PyObjectFrom(const MT_Tuple3 &vec);
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#ifdef USE_MATHUTILS
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/**
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* Converts an MT_Quaternion to a python object.
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*/
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PyObject* PyObjectFrom(const MT_Quaternion &qrot);
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#endif
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/**
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* Converts an MT_Tuple4 to a python object.
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*/
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PyObject* PyObjectFrom(const MT_Tuple4 &pos);
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#endif
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#endif // WITH_PYTHON
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