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Add the .Identity() classmethod to mathutils matrices. This allows the user

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to create an identity matrix of a specific size without having to specify
all the values in the matrix and then use the .identity() method.
This commit is contained in:
Andrew Hale
2012-01-24 01:56:44 +00:00
parent d7e30369f8
commit e634cb2607
1 changed files with 29 additions and 0 deletions
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29
source/blender/python/mathutils/mathutils_Matrix.c
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@@ -411,6 +411,34 @@ static void matrix_3x3_as_4x4(float mat[16])
/*-----------------------CLASS-METHODS----------------------------*/
//mat is a 1D array of floats - row[0][0], row[0][1], row[1][0], etc.
PyDoc_STRVAR(C_Matrix_Identity_doc,
".. classmethod:: Identity(size)\n"
"\n"
" Create an identity matrix.\n"
"\n"
" :arg size: The size of the identity matrix to construct [2, 4].\n"
" :type size: int\n"
" :return: A new identity matrix.\n"
" :rtype: :class:`Matrix`\n"
);
static PyObject *C_Matrix_Identity(PyObject *cls, PyObject *args)
{
int matSize;
if (!PyArg_ParseTuple(args, "i:Matrix.Identity", &matSize)) {
return NULL;
}
if (matSize < 2 || matSize > 4) {
PyErr_SetString(PyExc_RuntimeError,
"Matrix.Identity(): "
"size must be between 2 and 4");
return NULL;
}
return Matrix_CreatePyObject(NULL, matSize, matSize, Py_NEW, (PyTypeObject *)cls);
}
PyDoc_STRVAR(C_Matrix_Rotation_doc,
".. classmethod:: Rotation(angle, size, axis)\n"
"\n"
@@ -2246,6 +2274,7 @@ static struct PyMethodDef Matrix_methods[] = {
{"__copy__", (PyCFunction) Matrix_copy, METH_NOARGS, Matrix_copy_doc},
/* class methods */
{"Identity", (PyCFunction) C_Matrix_Identity, METH_VARARGS | METH_CLASS, C_Matrix_Identity_doc},
{"Rotation", (PyCFunction) C_Matrix_Rotation, METH_VARARGS | METH_CLASS, C_Matrix_Rotation_doc},
{"Scale", (PyCFunction) C_Matrix_Scale, METH_VARARGS | METH_CLASS, C_Matrix_Scale_doc},
{"Shear", (PyCFunction) C_Matrix_Shear, METH_VARARGS | METH_CLASS, C_Matrix_Shear_doc},