95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
// Filename: textureCollection_ext.cxx
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// Created by: rdb (11Feb15)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) Carnegie Mellon University. All rights reserved.
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//
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// All use of this software is subject to the terms of the revised BSD
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// license. You should have received a copy of this license along
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// with this source code in a file named "LICENSE."
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//
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////////////////////////////////////////////////////////////////////
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#include "textureCollection_ext.h"
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#ifdef HAVE_PYTHON
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#ifndef CPPPARSER
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extern struct Dtool_PyTypedObject Dtool_Texture;
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#endif
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////////////////////////////////////////////////////////////////////
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// Function: TextureCollection::__init__
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// Access: Published
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// Description: This special constructor accepts a Python list of
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// Textures. Since this constructor accepts a generic
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// PyObject *, it should be the last constructor listed
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// in the class record.
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////////////////////////////////////////////////////////////////////
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void Extension<TextureCollection>::
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__init__(PyObject *self, PyObject *sequence) {
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PyObject *fast = PySequence_Fast(sequence, "TextureCollection constructor requires a sequence");
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if (fast == NULL) {
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return;
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}
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Py_ssize_t size = PySequence_Fast_GET_SIZE(fast);
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_this->reserve(size);
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for (int i = 0; i < size; ++i) {
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PyObject *item = PySequence_Fast_GET_ITEM(fast, i);
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if (item == NULL) {
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return;
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}
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Texture *tex;
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DTOOL_Call_ExtractThisPointerForType(item, &Dtool_Texture, (void **)&tex);
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if (tex == (Texture *)NULL) {
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// Unable to add item--probably it wasn't of the appropriate type.
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ostringstream stream;
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stream << "Element " << i << " in sequence passed to TextureCollection constructor is not a Texture";
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string str = stream.str();
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PyErr_SetString(PyExc_TypeError, str.c_str());
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Py_DECREF(fast);
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return;
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} else {
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_this->add_texture(tex);
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}
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}
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Py_DECREF(fast);
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}
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////////////////////////////////////////////////////////////////////
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// Function: TextureCollection::__reduce__
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// Access: Published
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// Description: This special Python method is implement to provide
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// support for the pickle module.
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////////////////////////////////////////////////////////////////////
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PyObject *Extension<TextureCollection>::
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__reduce__(PyObject *self) const {
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// Here we will return a 4-tuple: (Class, (args), None, iterator),
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// where iterator is an iterator that will yield successive
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// Textures.
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// We should return at least a 2-tuple, (Class, (args)): the
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// necessary class object whose constructor we should call
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// (e.g. this), and the arguments necessary to reconstruct this
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// object.
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PyObject *this_class = PyObject_Type(self);
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if (this_class == NULL) {
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return NULL;
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}
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// Since a TextureCollection is itself an iterator, we can simply
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// pass it as the fourth tuple component.
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PyObject *result = Py_BuildValue("(O()OO)", this_class, Py_None, self);
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Py_DECREF(this_class);
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return result;
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}
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#endif // HAVE_PYTHON
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