224 lines
6.6 KiB
C++
224 lines
6.6 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 lodNode.h
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* @author drose
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* @date 2002-03-06
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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 "config_pgraphnodes.h"
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#include "pandaNode.h"
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#include "luse.h"
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#include "pvector.h"
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/**
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* A Level-of-Detail node. This selects only one of its children for
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* rendering, according to the distance from the camera and the table
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* indicated in the associated LOD object.
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*/
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class EXPCL_PANDA_PGRAPHNODES LODNode : public PandaNode {
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PUBLISHED:
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INLINE explicit LODNode(const std::string &name);
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static PT(LODNode) make_default_lod(const std::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 bool safe_to_combine_children() const;
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virtual void xform(const LMatrix4 &mat);
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virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
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virtual void output(std::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, and
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// switches "out" at the close distance. Thus, "in" should be larger than
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// "out".
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INLINE void add_switch(PN_stdfloat in, PN_stdfloat out);
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INLINE bool set_switch(int index, PN_stdfloat in, PN_stdfloat out);
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INLINE void clear_switches();
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INLINE int get_num_switches() const;
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INLINE PN_stdfloat get_in(int index) const;
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MAKE_SEQ(get_ins, get_num_switches, get_in);
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INLINE PN_stdfloat get_out(int index) const;
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MAKE_SEQ(get_outs, get_num_switches, get_out);
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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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// for performance tuning, increasing this value should improve performance
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// at the cost of model quality
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INLINE void set_lod_scale(PN_stdfloat value);
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INLINE PN_stdfloat get_lod_scale() const;
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INLINE void set_center(const LPoint3 ¢er);
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INLINE const LPoint3 &get_center() const;
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MAKE_SEQ_PROPERTY(ins, get_num_switches, get_in);
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MAKE_SEQ_PROPERTY(outs, get_num_switches, get_out);
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MAKE_PROPERTY(lowest_switch, get_lowest_switch);
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MAKE_PROPERTY(highest_switch, get_highest_switch);
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MAKE_PROPERTY(lod_scale, get_lod_scale, set_lod_scale);
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MAKE_PROPERTY(center, get_center, set_center);
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void show_switch(int index);
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void show_switch(int index, const LColor &color);
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void hide_switch(int index);
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void show_all_switches();
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void hide_all_switches();
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INLINE bool is_any_shown() const;
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bool verify_child_bounds() const;
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protected:
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int compute_child(CullTraverser *trav, CullTraverserData &data);
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bool show_switches_cull_callback(CullTraverser *trav, CullTraverserData &data);
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virtual void compute_internal_bounds(CPT(BoundingVolume) &internal_bounds,
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int &internal_vertices,
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int pipeline_stage,
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Thread *current_thread) const;
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INLINE void consider_verify_lods(CullTraverser *trav, CullTraverserData &data);
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CPT(TransformState) get_rel_transform(CullTraverser *trav, CullTraverserData &data);
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private:
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class CData;
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void do_show_switch(CData *cdata, int index, const LColor &color);
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void do_hide_switch(CData *cdata, int index);
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bool do_verify_child_bounds(const CData *cdata, int index,
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PN_stdfloat &suggested_radius) const;
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void do_auto_verify_lods(CullTraverser *trav, CullTraverserData &data);
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static const LColor &get_default_show_color(int index);
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protected:
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class Switch {
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public:
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INLINE Switch(PN_stdfloat in, PN_stdfloat out);
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INLINE PN_stdfloat get_in() const;
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INLINE PN_stdfloat get_out() const;
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INLINE void set_range(PN_stdfloat in, PN_stdfloat out);
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INLINE bool in_range(PN_stdfloat dist) const;
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INLINE bool in_range_2(PN_stdfloat dist2) const;
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INLINE void rescale(PN_stdfloat factor);
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INLINE bool is_shown() const;
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INLINE void show(const LColor &color);
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INLINE void hide();
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INLINE PandaNode *get_ring_viz() const;
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INLINE PandaNode *get_spindle_viz() const;
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INLINE const RenderState *get_viz_model_state() const;
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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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INLINE void clear_ring_viz();
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void compute_ring_viz();
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void compute_spindle_viz();
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void compute_viz_model_state();
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private:
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PN_stdfloat _in;
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PN_stdfloat _out;
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bool _shown;
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UnalignedLVecBase4 _show_color;
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PT(PandaNode) _ring_viz;
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PT(PandaNode) _spindle_viz;
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CPT(RenderState) _viz_model_state;
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public:
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UpdateSeq _bounds_seq;
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bool _verify_ok;
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};
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typedef pvector<Switch> SwitchVector;
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private:
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class EXPCL_PANDA_PGRAPHNODES 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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LPoint3 _center;
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SwitchVector _switch_vector;
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size_t _lowest, _highest;
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UpdateSeq _bounds_seq;
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bool _got_force_switch;
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int _force_switch;
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int _num_shown;
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PN_stdfloat _lod_scale;
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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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typedef CycleDataLockedReader<CData> CDLockedReader;
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typedef CycleDataStageReader<CData> CDStageReader;
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typedef CycleDataStageWriter<CData> CDStageWriter;
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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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