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

150 lines
4.5 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 texGenAttrib.h
* @author masad
* @date 2004-06-21
*/
#ifndef TEXGENATTRIB_H
#define TEXGENATTRIB_H
#include "pandabase.h"
#include "geom.h"
#include "renderAttrib.h"
#include "textureStage.h"
#include "texture.h"
#include "pointerTo.h"
#include "nodePath.h"
/**
* Computes texture coordinates for geometry automatically based on vertex
* position and/or normal. This can be used to implement reflection and/or
* refraction maps, for instance to make shiny surfaces, as well as other
* special effects such as projective texturing.
*/
class EXPCL_PANDA_PGRAPH TexGenAttrib : public RenderAttrib {
PUBLISHED:
// We inherit the definition of our Mode enumerated type from RenderAttrib.
// Normally, Mode would be defined here, but we define it in the base class
// instead as a hack to avoid a problem with circular includes.
typedef RenderAttrib::TexGenMode Mode;
protected:
INLINE TexGenAttrib();
INLINE TexGenAttrib(const TexGenAttrib &copy);
public:
virtual ~TexGenAttrib();
PUBLISHED:
static CPT(RenderAttrib) make();
static CPT(RenderAttrib) make(TextureStage *stage, Mode mode);
static CPT(RenderAttrib) make_default();
CPT(RenderAttrib) add_stage(TextureStage *stage, Mode mode) const;
CPT(RenderAttrib) add_stage(TextureStage *stage, Mode mode, const LTexCoord3 &constant_value) const;
CPT(RenderAttrib) remove_stage(TextureStage *stage) const;
bool is_empty() const;
bool has_stage(TextureStage *stage) const;
Mode get_mode(TextureStage *stage) const;
bool has_gen_texcoord_stage(TextureStage *stage) const;
const LTexCoord3 &get_constant_value(TextureStage *stage) const;
INLINE int get_geom_rendering(int geom_rendering) const;
public:
virtual void output(std::ostream &out) const;
protected:
virtual int compare_to_impl(const RenderAttrib *other) const;
virtual size_t get_hash_impl() const;
virtual CPT(RenderAttrib) compose_impl(const RenderAttrib *other) const;
virtual CPT(RenderAttrib) invert_compose_impl(const RenderAttrib *other) const;
private:
class ModeDef;
void filled_stages();
void record_stage(TextureStage *stage, ModeDef &mode_def);
class ModeDef {
public:
INLINE ModeDef();
INLINE int compare_to(const ModeDef &other) const;
Mode _mode;
std::string _source_name;
NodePath _light;
LTexCoord3 _constant_value;
};
typedef pmap<PT(TextureStage), ModeDef> Stages;
Stages _stages;
// This is a set of TextureStage pointers for which texture coordinates will
// not be needed from the Geom. It's redundant; it's almost the same set
// that is listed in _stages, above. It's just here as an optimization
// during rendering.
typedef pset<TextureStage *> NoTexCoordStages;
NoTexCoordStages _no_texcoords;
// This element is only used during reading from a bam file. It has no
// meaningful value any other time.
pvector<Mode> _read_modes;
int _num_point_sprites;
// _point_geom_rendering is the GeomRendering bits that are added by the
// TexGenAttrib if there are any points in the Geom. _geom_rendering is the
// GeomRendering bits that are added regardless of the kind of Geom it is.
int _point_geom_rendering;
int _geom_rendering;
static CPT(RenderAttrib) _empty_attrib;
PUBLISHED:
static int get_class_slot() {
return _attrib_slot;
}
virtual int get_slot() const {
return get_class_slot();
}
MAKE_PROPERTY(class_slot, get_class_slot);
public:
static void register_with_read_factory();
virtual void write_datagram(BamWriter *manager, Datagram &dg);
virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
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() {
RenderAttrib::init_type();
register_type(_type_handle, "TexGenAttrib",
RenderAttrib::get_class_type());
_attrib_slot = register_slot(_type_handle, 100, new TexGenAttrib);
}
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;
static int _attrib_slot;
};
#include "texGenAttrib.I"
#endif