render.h Source File

00001 //
00002 // render.h
00003 //
00004 // Copyright (C) 1996 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifdef __GNUC__
00029 #pragma interface
00030 #endif
00031 
00032 #ifndef _util_render_render_h
00033 #define _util_render_render_h
00034 
00035 #include <util/class/class.h>
00036 #include <util/render/appearance.h>
00037 #include <util/render/material.h>
00038 #include <util/render/transform.h>
00039 #include <util/render/stack.h>
00040 
00041 namespace sc {
00042 
00043 class RenderedObject;
00044 class AnimatedObject;
00045 class RenderedObjectSet;
00046 class RenderedSphere;
00047 class RenderedPolygons;
00048 class RenderedPolylines;
00049 
00050 class Render: public DescribedClass {
00051   protected:
00052     Ref<Material> default_material_;
00053     Ref<Appearance> default_appearance_;
00054     Ref<Transform> default_transform_;
00055 
00056     Stack<Ref<Material> > material_stack_;
00057     Stack<Ref<Appearance> > appearance_stack_;
00058     Stack<Ref<Transform> > transform_stack_;
00059 
00060     virtual void push_material(const Ref<Material>& m);
00061     virtual void push_appearance(const Ref<Appearance>& a);
00062     virtual void push_transform(const Ref<Transform>& t);
00063     virtual Ref<Material> pop_material();
00064     virtual Ref<Appearance> pop_appearance();
00065     virtual Ref<Transform> pop_transform();
00066 
00067   public:
00068     Render();
00069     Render(const Ref<KeyVal>&);
00070     virtual ~Render();
00071 
00072     Ref<Material> default_material() { return default_material_; }
00073     Ref<Appearance> default_appearance() { return default_appearance_; }
00074     Ref<Transform> default_transform() { return default_transform_; }
00075     void default_material(const Ref<Material>& m) { default_material_ = m; }
00076     void default_appearance(const Ref<Appearance>& a) {default_appearance_ = a;}
00077     void default_transform(const Ref<Transform>& t) {default_transform_ = t;}
00078 
00079     virtual void clear() = 0;
00080 
00081     virtual void render(const Ref<RenderedObject>&);
00082     virtual void animate(const Ref<AnimatedObject> &);
00083 
00084     virtual void set(const Ref<RenderedObjectSet>&);
00085     virtual void sphere(const Ref<RenderedSphere>&);
00086     virtual void polygons(const Ref<RenderedPolygons>&) = 0;
00087     virtual void polylines(const Ref<RenderedPolylines>&) = 0;
00088 };
00089 
00090 
00091 class FileRender: public Render {
00092   protected:
00093     char* filename_;
00094     char* basename_;
00095     std::streambuf *sbuf_;
00096     int delete_sbuf_;
00097     int depth_;
00098 
00099     char *get_filename(const char *objectname);
00100     void open_sbuf(const char *objectname);
00101     void close_sbuf();
00102   public:
00103     FileRender(const char * filename);
00104     FileRender(std::ostream &o = ExEnv::out0());
00105     FileRender(const Ref<KeyVal>&);
00106     virtual ~FileRender();
00107 
00108     void clear();
00109 
00110     virtual void set_filename(const char *name);
00111     virtual void set_basename(const char *name);
00112     virtual const char *file_extension();
00113 };
00114 
00115 }
00116 
00117 #endif
00118 
00119 // Local Variables:
00120 // mode: c++
00121 // c-file-style: "CLJ"
00122 // End: