112 lines
2.9 KiB
C
112 lines
2.9 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 lightRampAttrib.h
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* @author drose
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* @date 2002-03-04
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*/
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#ifndef LIGHTRAMPATTRIB_H
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#define LIGHTRAMPATTRIB_H
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#include "pandabase.h"
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#include "renderAttrib.h"
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class FactoryParams;
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/**
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* A Light Ramp is any unary operator that takes a rendered pixel as input,
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* and adjusts the brightness of that pixel. For example, gamma correction is
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* a kind of light ramp. So is HDR tone mapping. So is cartoon shading. See
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* the constructors for an explanation of each kind of ramp.
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*/
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class EXPCL_PANDA_PGRAPH LightRampAttrib : public RenderAttrib {
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private:
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INLINE LightRampAttrib();
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PUBLISHED:
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enum LightRampMode {
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LRT_default,
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LRT_identity,
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LRT_single_threshold,
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LRT_double_threshold,
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LRT_hdr0,
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LRT_hdr1,
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LRT_hdr2,
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};
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static CPT(RenderAttrib) make_default();
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static CPT(RenderAttrib) make_identity();
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static CPT(RenderAttrib) make_single_threshold(PN_stdfloat thresh0, PN_stdfloat lev0);
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static CPT(RenderAttrib) make_double_threshold(PN_stdfloat thresh0, PN_stdfloat lev0, PN_stdfloat thresh1, PN_stdfloat lev1);
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static CPT(RenderAttrib) make_hdr0();
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static CPT(RenderAttrib) make_hdr1();
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static CPT(RenderAttrib) make_hdr2();
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INLINE LightRampMode get_mode() const;
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INLINE PN_stdfloat get_level(int n) const;
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INLINE PN_stdfloat get_threshold(int n) const;
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PUBLISHED:
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MAKE_PROPERTY(mode, get_mode);
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public:
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virtual void output(std::ostream &out) const;
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protected:
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virtual int compare_to_impl(const RenderAttrib *other) const;
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virtual size_t get_hash_impl() const;
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private:
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LightRampMode _mode;
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PN_stdfloat _level[2];
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PN_stdfloat _threshold[2];
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static CPT(RenderAttrib) _default;
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PUBLISHED:
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static int get_class_slot() {
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return _attrib_slot;
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}
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virtual int get_slot() const {
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return get_class_slot();
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}
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MAKE_PROPERTY(class_slot, get_class_slot);
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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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RenderAttrib::init_type();
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register_type(_type_handle, "LightRampAttrib",
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RenderAttrib::get_class_type());
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_attrib_slot = register_slot(_type_handle, 100, new LightRampAttrib);
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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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static int _attrib_slot;
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};
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#include "lightRampAttrib.I"
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#endif
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