152 lines
4.3 KiB
C++
152 lines
4.3 KiB
C++
// Filename: lodNode.h
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// Created by: drose (06Mar02)
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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 - 2004, 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://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef LODNODE_H
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#define LODNODE_H
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#include "pandabase.h"
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#include "pandaNode.h"
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////////////////////////////////////////////////////////////////////
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// Class : LODNode
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// Description : A Level-of-Detail node. This selects only one of its
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// children for rendering, according to the distance
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// from the camera and the table indicated in the
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// associated LOD object.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA LODNode : public PandaNode {
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PUBLISHED:
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INLINE LODNode(const string &name);
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protected:
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INLINE LODNode(const LODNode ©);
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public:
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virtual PandaNode *make_copy() const;
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virtual bool safe_to_combine() const;
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virtual void xform(const LMatrix4f &mat);
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virtual bool has_cull_callback() const;
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virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
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virtual void output(ostream &out) const;
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virtual bool is_lod_node() const;
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PUBLISHED:
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// The sense of in vs. out distances is as if the object were coming
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// towards you from far away: it switches "in" at the far distance,
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// and switches "out" at the close distance. Thus, "in" should be
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// larger than "out".
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INLINE void add_switch(float in, float out);
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INLINE bool set_switch(int index, float in, float out);
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INLINE void clear_switches();
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INLINE int get_num_switches() const;
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INLINE float get_in(int index) const;
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INLINE float get_out(int index) const;
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INLINE int get_lowest_switch() const;
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INLINE int get_highest_switch() const;
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INLINE void force_switch(int index);
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INLINE void clear_force_switch();
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INLINE void set_center(const LPoint3f ¢er);
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INLINE const LPoint3f &get_center() const;
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protected:
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int compute_child(CullTraverser *trav, CullTraverserData &data);
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protected:
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class Switch {
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public:
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INLINE Switch(float in, float out);
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INLINE float get_in() const;
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INLINE float get_out() const;
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INLINE void set_range(float in, float out);
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INLINE bool in_range(float dist) const;
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INLINE void rescale(float factor);
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INLINE void write_datagram(Datagram &destination) const;
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INLINE void read_datagram(DatagramIterator &source);
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private:
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float _in;
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float _out;
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};
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typedef pvector<Switch> SwitchVector;
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class EXPCL_PANDA CData : public CycleData {
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public:
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INLINE CData();
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INLINE CData(const CData ©);
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virtual CycleData *make_copy() const;
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void check_limits();
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virtual void write_datagram(BamWriter *manager, Datagram &dg) const;
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virtual void fillin(DatagramIterator &scan, BamReader *manager);
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virtual TypeHandle get_parent_type() const {
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return LODNode::get_class_type();
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}
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LPoint3f _center;
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SwitchVector _switch_vector;
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size_t _lowest, _highest;
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bool _got_force_switch;
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int _force_switch;
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};
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PipelineCycler<CData> _cycler;
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typedef CycleDataReader<CData> CDReader;
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typedef CycleDataWriter<CData> CDWriter;
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public:
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static void register_with_read_factory();
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virtual void write_datagram(BamWriter *manager, Datagram &dg);
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protected:
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static TypedWritable *make_from_bam(const FactoryParams ¶ms);
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void fillin(DatagramIterator &scan, BamReader *manager);
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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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PandaNode::init_type();
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register_type(_type_handle, "LODNode",
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PandaNode::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 "lodNode.I"
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#endif
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