106 lines
2.6 KiB
C
106 lines
2.6 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 rescaleNormalAttrib.h
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* @author drose
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* @date 2004-12-30
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*/
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#ifndef RESCALENORMALATTRIB_H
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#define RESCALENORMALATTRIB_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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* Specifies how polygons are to be drawn.
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*/
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class EXPCL_PANDA_PGRAPH RescaleNormalAttrib : public RenderAttrib {
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PUBLISHED:
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enum Mode {
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// No adjustments are made to normals.
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M_none,
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// Normals are counterscaled by the transform's uniform scale, if
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// supported by the graphics API.
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M_rescale,
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// Normals are scaled to unit length; potentially expensive.
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M_normalize,
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// Normals are counterscaled in the presence of a uniform scale transform,
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// or normalized in the presence of a non-uniform scale transform.
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M_auto,
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};
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private:
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INLINE RescaleNormalAttrib(Mode mode);
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PUBLISHED:
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static CPT(RenderAttrib) make(Mode mode);
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INLINE static CPT(RenderAttrib) make_default();
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INLINE Mode get_mode() const;
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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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Mode _mode;
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// There are so few possible combinations, and it's used fairly often, so we
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// keep an array of the possible attributes.
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static CPT(RenderAttrib) _attribs[M_auto + 1];
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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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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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EXPCL_PANDA_PGRAPH std::ostream &operator << (std::ostream &out, RescaleNormalAttrib::Mode mode);
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EXPCL_PANDA_PGRAPH std::istream &operator >> (std::istream &in, RescaleNormalAttrib::Mode &mode);
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#include "rescaleNormalAttrib.I"
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#endif
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