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// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2000 Alistair Riddoch
//
// 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.
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
// $Id: Py_Quaternion.cpp,v 1.15 2007-06-04 08:30:27 alriddoch Exp $
#include "Py_Quaternion.h"
#include "Py_Vector3D.h"
static PyObject * Quaternion_as_list(PyQuaternion * self)
{
PyObject * r = PyList_New(0);
PyObject * i = PyFloat_FromDouble(self->rotation.vector().x());
PyList_Append(r, i);
Py_DECREF(i);
i = PyFloat_FromDouble(self->rotation.vector().y());
PyList_Append(r, i);
Py_DECREF(i);
i = PyFloat_FromDouble(self->rotation.vector().z());
PyList_Append(r, i);
Py_DECREF(i);
i = PyFloat_FromDouble(self->rotation.scalar());
PyList_Append(r, i);
Py_DECREF(i);
return r;
}
static PyObject * Quaternion_is_valid(PyQuaternion * self)
{
PyObject * ret = self->rotation.isValid() ? Py_True : Py_False;
Py_INCREF(ret);
return ret;
}
static PyObject * Quaternion_rotation(PyQuaternion * self, PyObject * args)
{
PyObject * axis_arg;
double angle;
if (!PyArg_ParseTuple(args, "Od", &axis_arg, &angle)) {
return NULL;
}
if (!PyVector3D_Check(axis_arg)) {
PyErr_SetString(PyExc_TypeError, "Argument must be a Vector3D");
return NULL;
}
PyVector3D * axis = (PyVector3D *)axis_arg;
self->rotation.rotation(axis->coords, angle);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef Quaternion_methods[] = {
{"as_list", (PyCFunction)Quaternion_as_list, METH_NOARGS},
{"is_valid", (PyCFunction)Quaternion_is_valid,METH_NOARGS},
{"rotation", (PyCFunction)Quaternion_rotation,METH_VARARGS},
{NULL, NULL} /* sentinel */
};
static void Quaternion_dealloc(PyQuaternion *self)
{
self->rotation.~Quaternion();
PyObject_Free(self);
}
static PyObject * Quaternion_getattr(PyQuaternion *self, char *name)
{
if (strcmp(name, "x") == 0) { return PyFloat_FromDouble(self->rotation.vector().x()); }
if (strcmp(name, "y") == 0) { return PyFloat_FromDouble(self->rotation.vector().y()); }
if (strcmp(name, "z") == 0) { return PyFloat_FromDouble(self->rotation.vector().z()); }
if (strcmp(name, "w") == 0) { return PyFloat_FromDouble(self->rotation.scalar()); }
return Py_FindMethod(Quaternion_methods, (PyObject *)self, name);
}
static int Quaternion_compare(PyQuaternion * self, PyQuaternion * other)
{
if (!PyQuaternion_Check(other)) {
return -1;
}
if (self->rotation == other->rotation) {
return 0;
}
return 1;
}
static PyObject* Quaternion_repr(PyQuaternion * self)
{
char buf[128];
::snprintf(buf, 128, "(%f, (%f, %f, %f))", self->rotation.scalar(),
self->rotation.vector().x(), self->rotation.vector().y(),
self->rotation.vector().z());
return PyString_FromString(buf);
}
PyObject * Quaternium_num_mult(PyQuaternion * self, PyQuaternion * other)
{
if (!PyQuaternion_Check(other)) {
PyErr_SetString(PyExc_TypeError, "Quaternion must be multiplied by Quaternion");
return NULL;
}
PyQuaternion * ret = newPyQuaternion();
ret->rotation = self->rotation * other->rotation;
return (PyObject *)ret;
}
static PyNumberMethods Quaternion_as_number = {
0, // nb_add;
0, // nb_subtract;
(binaryfunc)Quaternium_num_mult, // nb_multiply;
0, // nb_divide;
0, // nb_remainder;
0, // nb_divmod;
0, // nb_power;
0, // nb_negative;
0, // nb_positive;
0, // nb_absolute;
0, // nb_nonzero;
0, // nb_invert;
0, // nb_lshift;
0, // nb_rshift;
0, // nb_and;
0, // nb_xor;
0, // nb_or;
0, // nb_coerce;
0, // nb_int;
0, // nb_long;
0, // nb_float;
0, // nb_oct;
0, // nb_hex;
};
PyTypeObject PyQuaternion_Type = {
PyObject_HEAD_INIT(&PyType_Type)
0, /*ob_size*/
"Quaternion", /*tp_name*/
sizeof(PyQuaternion), /*tp_basicsize*/
0, /*tp_itemsize*/
/* methods */
(destructor)Quaternion_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)Quaternion_getattr,/*tp_getattr*/
0, /*tp_setattr*/
(cmpfunc)Quaternion_compare, /*tp_compare*/
(reprfunc)Quaternion_repr, /*tp_repr*/
&Quaternion_as_number, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
};
PyQuaternion * newPyQuaternion()
{
PyQuaternion * self;
self = PyObject_NEW(PyQuaternion, &PyQuaternion_Type);
if (self == NULL) {
return NULL;
}
new(&(self->rotation)) Quaternion();
return self;
}
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