Panda3D

colorScaleAttrib.h

00001 // Filename: colorScaleAttrib.h
00002 // Created by:  drose (14Mar02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef COLORSCALEATTRIB_H
00016 #define COLORSCALEATTRIB_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "renderAttrib.h"
00021 #include "luse.h"
00022 
00023 class FactoryParams;
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //       Class : ColorScaleAttrib
00027 // Description : Applies a scale to colors in the scene graph and on
00028 //               vertices.
00029 ////////////////////////////////////////////////////////////////////
00030 class EXPCL_PANDA_PGRAPH ColorScaleAttrib : public RenderAttrib {
00031 protected:
00032   ColorScaleAttrib(bool off, const LVecBase4 &scale);
00033   INLINE ColorScaleAttrib(const ColorScaleAttrib &copy);
00034 
00035 PUBLISHED:
00036   static CPT(RenderAttrib) make_identity();
00037   static CPT(RenderAttrib) make(const LVecBase4 &scale);
00038   static CPT(RenderAttrib) make_off();
00039   static CPT(RenderAttrib) make_default();
00040 
00041   INLINE bool is_off() const;
00042   INLINE bool is_identity() const;
00043   INLINE bool has_scale() const;
00044   INLINE bool has_rgb_scale() const;
00045   INLINE bool has_alpha_scale() const;
00046   INLINE const LVecBase4 &get_scale() const;
00047   CPT(RenderAttrib) set_scale(const LVecBase4 &scale) const;
00048 
00049 public:
00050   virtual bool lower_attrib_can_override() const;
00051   virtual void output(ostream &out) const;
00052 
00053 protected:
00054   virtual int compare_to_impl(const RenderAttrib *other) const;
00055   virtual size_t get_hash_impl() const;
00056   virtual CPT(RenderAttrib) compose_impl(const RenderAttrib *other) const;
00057   virtual CPT(RenderAttrib) invert_compose_impl(const RenderAttrib *other) const;
00058   virtual CPT(RenderAttrib) get_auto_shader_attrib_impl(const RenderState *state) const;
00059 
00060 private:
00061   void quantize_scale();
00062 
00063 private:
00064   bool _off;
00065   bool _has_scale;
00066   bool _has_rgb_scale;
00067   bool _has_alpha_scale;
00068   LVecBase4 _scale;
00069   static CPT(RenderAttrib) _identity_attrib;
00070 
00071 PUBLISHED:
00072   static int get_class_slot() {
00073     return _attrib_slot;
00074   }
00075   virtual int get_slot() const {
00076     return get_class_slot();
00077   }
00078 
00079 public:
00080   static void register_with_read_factory();
00081   virtual void write_datagram(BamWriter *manager, Datagram &dg);
00082 
00083 protected:
00084   static TypedWritable *make_from_bam(const FactoryParams &params);
00085   void fillin(DatagramIterator &scan, BamReader *manager);
00086   
00087 public:
00088   static TypeHandle get_class_type() {
00089     return _type_handle;
00090   }
00091   static void init_type() {
00092     RenderAttrib::init_type();
00093     register_type(_type_handle, "ColorScaleAttrib",
00094                   RenderAttrib::get_class_type());
00095     _attrib_slot = register_slot(_type_handle, 100, make_default);
00096   }
00097   virtual TypeHandle get_type() const {
00098     return get_class_type();
00099   }
00100   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00101 
00102 private:
00103   static TypeHandle _type_handle;
00104   static int _attrib_slot;
00105 };
00106 
00107 #include "colorScaleAttrib.I"
00108 
00109 #endif
00110 
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