138 lines
4 KiB
C
138 lines
4 KiB
C
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/**
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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 spotlight.h
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* @author mike
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* @date 1997-01-09
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*/
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#ifndef SPOTLIGHT_H
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#define SPOTLIGHT_H
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#include "pandabase.h"
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#include "lightLensNode.h"
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#include "texture.h"
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/**
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* A light originating from a single point in space, and shining in a
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* particular direction, with a cone-shaped falloff.
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*
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* The Spotlight frustum is defined using a Lens, so it can have any of the
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* properties that a camera lens can have.
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*
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* Note that the class is named Spotlight instead of SpotLight, because
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* "spotlight" is a single English word, instead of two words.
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*/
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class EXPCL_PANDA_PGRAPHNODES Spotlight : public LightLensNode {
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PUBLISHED:
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Spotlight(const std::string &name);
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protected:
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Spotlight(const Spotlight ©);
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public:
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virtual PandaNode *make_copy() const;
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virtual void xform(const LMatrix4 &mat);
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virtual void write(std::ostream &out, int indent_level) const;
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virtual bool get_vector_to_light(LVector3 &result,
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const LPoint3 &from_object_point,
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const LMatrix4 &to_object_space);
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PUBLISHED:
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INLINE PN_stdfloat get_exponent() const final;
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INLINE void set_exponent(PN_stdfloat exponent);
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MAKE_PROPERTY(exponent, get_exponent, set_exponent);
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INLINE const LColor &get_specular_color() const final;
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INLINE void set_specular_color(const LColor &color);
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INLINE void clear_specular_color();
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MAKE_PROPERTY(specular_color, get_specular_color, set_specular_color);
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INLINE const LVecBase3 &get_attenuation() const final;
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INLINE void set_attenuation(const LVecBase3 &attenuation);
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MAKE_PROPERTY(attenuation, get_attenuation, set_attenuation);
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INLINE PN_stdfloat get_max_distance() const;
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INLINE void set_max_distance(PN_stdfloat max_distance);
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MAKE_PROPERTY(max_distance, get_max_distance, set_max_distance);
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virtual int get_class_priority() const;
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static PT(Texture) make_spot(int pixel_width, PN_stdfloat full_radius,
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LColor &fg, LColor &bg);
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public:
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virtual void bind(GraphicsStateGuardianBase *gsg, const NodePath &light,
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int light_id);
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protected:
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virtual void fill_viz_geom(GeomNode *viz_geom);
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private:
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CPT(RenderState) get_viz_state();
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private:
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// This is the data that must be cycled between pipeline stages.
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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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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 Spotlight::get_class_type();
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}
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PN_stdfloat _exponent;
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LColor _specular_color;
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LVecBase3 _attenuation;
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PN_stdfloat _max_distance;
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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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LightLensNode::init_type();
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register_type(_type_handle, "Spotlight",
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LightLensNode::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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INLINE std::ostream &operator << (std::ostream &out, const Spotlight &light) {
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light.output(out);
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return out;
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}
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#include "spotlight.I"
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#endif
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