62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
/**
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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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* @file nodeCullCallbackData.cxx
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* @author drose
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* @date 2009-03-13
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*/
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#include "nodeCullCallbackData.h"
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#include "callbackNode.h"
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#include "cullTraverser.h"
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#include "cullTraverserData.h"
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#include "cullableObject.h"
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#include "cullHandler.h"
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TypeHandle NodeCullCallbackData::_type_handle;
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/**
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*
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*/
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void NodeCullCallbackData::
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output(std::ostream &out) const {
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out << get_type() << "(" << (void *)_trav << ", " << (void *)&_data << ")";
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}
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/**
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* You should make this call during the callback if you want to continue the
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* normal rendering function that would have been done in the absence of a
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* callback.
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*
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* Specifically, this method will add this node to the draw queue, and
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* continue the cull traversal for all the nodes below. If you omit this
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* call, this node and its children will be pruned from the render result.
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*/
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void NodeCullCallbackData::
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upcall() {
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PandaNode *node = _data.node();
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if (node->is_of_type(CallbackNode::get_class_type())) {
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CallbackNode *cbnode = (CallbackNode *)node;
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// OK, render this node. Rendering a CallbackNode means creating a
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// CullableObject for the draw_callback, if any. We don't need to pass
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// any Geoms, however.
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CallbackObject *cbobj = cbnode->get_draw_callback();
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if (cbobj != nullptr) {
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CullableObject *object =
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new CullableObject(nullptr, _data._state,
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_data.get_internal_transform(_trav));
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object->set_draw_callback(cbobj);
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_trav->get_cull_handler()->record_object(object, _trav);
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}
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}
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// Now traverse below.
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_trav->traverse_below(_data);
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}
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