historical/toontown-classic.git/panda/include/lodNode.h
2024-01-16 11:20:27 -06:00

224 lines
6.6 KiB
C++

/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file lodNode.h
* @author drose
* @date 2002-03-06
*/
#ifndef LODNODE_H
#define LODNODE_H
#include "pandabase.h"
#include "config_pgraphnodes.h"
#include "pandaNode.h"
#include "luse.h"
#include "pvector.h"
/**
* A Level-of-Detail node. This selects only one of its children for
* rendering, according to the distance from the camera and the table
* indicated in the associated LOD object.
*/
class EXPCL_PANDA_PGRAPHNODES LODNode : public PandaNode {
PUBLISHED:
INLINE explicit LODNode(const std::string &name);
static PT(LODNode) make_default_lod(const std::string &name);
protected:
INLINE LODNode(const LODNode &copy);
public:
virtual PandaNode *make_copy() const;
virtual bool safe_to_combine() const;
virtual bool safe_to_combine_children() const;
virtual void xform(const LMatrix4 &mat);
virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
virtual void output(std::ostream &out) const;
virtual bool is_lod_node() const;
PUBLISHED:
// The sense of in vs. out distances is as if the object were coming
// towards you from far away: it switches "in" at the far distance, and
// switches "out" at the close distance. Thus, "in" should be larger than
// "out".
INLINE void add_switch(PN_stdfloat in, PN_stdfloat out);
INLINE bool set_switch(int index, PN_stdfloat in, PN_stdfloat out);
INLINE void clear_switches();
INLINE int get_num_switches() const;
INLINE PN_stdfloat get_in(int index) const;
MAKE_SEQ(get_ins, get_num_switches, get_in);
INLINE PN_stdfloat get_out(int index) const;
MAKE_SEQ(get_outs, get_num_switches, get_out);
INLINE int get_lowest_switch() const;
INLINE int get_highest_switch() const;
INLINE void force_switch(int index);
INLINE void clear_force_switch();
// for performance tuning, increasing this value should improve performance
// at the cost of model quality
INLINE void set_lod_scale(PN_stdfloat value);
INLINE PN_stdfloat get_lod_scale() const;
INLINE void set_center(const LPoint3 &center);
INLINE const LPoint3 &get_center() const;
MAKE_SEQ_PROPERTY(ins, get_num_switches, get_in);
MAKE_SEQ_PROPERTY(outs, get_num_switches, get_out);
MAKE_PROPERTY(lowest_switch, get_lowest_switch);
MAKE_PROPERTY(highest_switch, get_highest_switch);
MAKE_PROPERTY(lod_scale, get_lod_scale, set_lod_scale);
MAKE_PROPERTY(center, get_center, set_center);
void show_switch(int index);
void show_switch(int index, const LColor &color);
void hide_switch(int index);
void show_all_switches();
void hide_all_switches();
INLINE bool is_any_shown() const;
bool verify_child_bounds() const;
protected:
int compute_child(CullTraverser *trav, CullTraverserData &data);
bool show_switches_cull_callback(CullTraverser *trav, CullTraverserData &data);
virtual void compute_internal_bounds(CPT(BoundingVolume) &internal_bounds,
int &internal_vertices,
int pipeline_stage,
Thread *current_thread) const;
INLINE void consider_verify_lods(CullTraverser *trav, CullTraverserData &data);
CPT(TransformState) get_rel_transform(CullTraverser *trav, CullTraverserData &data);
private:
class CData;
void do_show_switch(CData *cdata, int index, const LColor &color);
void do_hide_switch(CData *cdata, int index);
bool do_verify_child_bounds(const CData *cdata, int index,
PN_stdfloat &suggested_radius) const;
void do_auto_verify_lods(CullTraverser *trav, CullTraverserData &data);
static const LColor &get_default_show_color(int index);
protected:
class Switch {
public:
INLINE Switch(PN_stdfloat in, PN_stdfloat out);
INLINE PN_stdfloat get_in() const;
INLINE PN_stdfloat get_out() const;
INLINE void set_range(PN_stdfloat in, PN_stdfloat out);
INLINE bool in_range(PN_stdfloat dist) const;
INLINE bool in_range_2(PN_stdfloat dist2) const;
INLINE void rescale(PN_stdfloat factor);
INLINE bool is_shown() const;
INLINE void show(const LColor &color);
INLINE void hide();
INLINE PandaNode *get_ring_viz() const;
INLINE PandaNode *get_spindle_viz() const;
INLINE const RenderState *get_viz_model_state() const;
INLINE void write_datagram(Datagram &destination) const;
INLINE void read_datagram(DatagramIterator &source);
private:
INLINE void clear_ring_viz();
void compute_ring_viz();
void compute_spindle_viz();
void compute_viz_model_state();
private:
PN_stdfloat _in;
PN_stdfloat _out;
bool _shown;
UnalignedLVecBase4 _show_color;
PT(PandaNode) _ring_viz;
PT(PandaNode) _spindle_viz;
CPT(RenderState) _viz_model_state;
public:
UpdateSeq _bounds_seq;
bool _verify_ok;
};
typedef pvector<Switch> SwitchVector;
private:
class EXPCL_PANDA_PGRAPHNODES CData : public CycleData {
public:
INLINE CData();
INLINE CData(const CData &copy);
virtual CycleData *make_copy() const;
void check_limits();
virtual void write_datagram(BamWriter *manager, Datagram &dg) const;
virtual void fillin(DatagramIterator &scan, BamReader *manager);
virtual TypeHandle get_parent_type() const {
return LODNode::get_class_type();
}
LPoint3 _center;
SwitchVector _switch_vector;
size_t _lowest, _highest;
UpdateSeq _bounds_seq;
bool _got_force_switch;
int _force_switch;
int _num_shown;
PN_stdfloat _lod_scale;
};
PipelineCycler<CData> _cycler;
typedef CycleDataReader<CData> CDReader;
typedef CycleDataWriter<CData> CDWriter;
typedef CycleDataLockedReader<CData> CDLockedReader;
typedef CycleDataStageReader<CData> CDStageReader;
typedef CycleDataStageWriter<CData> CDStageWriter;
public:
static void register_with_read_factory();
virtual void write_datagram(BamWriter *manager, Datagram &dg);
protected:
static TypedWritable *make_from_bam(const FactoryParams &params);
void fillin(DatagramIterator &scan, BamReader *manager);
public:
static TypeHandle get_class_type() {
return _type_handle;
}
static void init_type() {
PandaNode::init_type();
register_type(_type_handle, "LODNode",
PandaNode::get_class_type());
}
virtual TypeHandle get_type() const {
return get_class_type();
}
virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
private:
static TypeHandle _type_handle;
};
#include "lodNode.I"
#endif