76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// Filename: geomNodeContext.h
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// Created by: drose (11Jun01)
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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) 2001, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef GEOMNODECONTEXT_H
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#define GEOMNODECONTEXT_H
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#include "pandabase.h"
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#include "savedContext.h"
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class GeomNode;
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////////////////////////////////////////////////////////////////////
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// Class : GeomNodeContext
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// Description : This is a special class object, similar to a
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// TextureContext, that holds all the information
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// returned by a particular GSG to cache the rendering
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// information associated with one or more GeomNodes.
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// This is similar to, but different from, a Geom
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// context, which is associated with the containing Geom
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// class; a GSG might prefer to associate data with
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// either the Geom or the GeomNode or both.
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//
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// This allows the GSG to precompute some information
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// necessary for drawing the Geoms as quickly as
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// possible and reuse that information across multiple
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// frames. Typically, only static Geoms
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// (e.g. nonindexed) will be assigned GeomContexts.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA GeomNodeContext : public SavedContext {
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public:
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INLINE GeomNodeContext(GeomNode *node);
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// This cannot be a PT(GeomNode), because the geomNode and the GSG
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// both own their GeomNodeContexts! That would create a circular
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// reference count.
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GeomNode *_node;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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SavedContext::init_type();
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register_type(_type_handle, "GeomNodeContext",
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SavedContext::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "geomNodeContext.I"
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#endif
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