Eliminate backend/frame.h. (POV-Ray#427)

Also clean up various header files and file headers along the way, mainly in the back-end module.

source/backend/bounding/boundingtask.cpp

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,24 +31,32 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
+// Unit header file must be the first file included within POV-Ray *.cpp files (pulls in config)
+#include "backend/bounding/boundingtask.h"
+
+// Standard C++ header files
 #include <set>
 
+// Boost header files
 #include <boost/bind.hpp>
+#if POV_MULTITHREADED
 #include <boost/thread.hpp>
+#endif
 
-// frame.h must always be the first POV file included (pulls in platform config)
-#include "backend/frame.h"
-#include "backend/bounding/boundingtask.h"
-
+// POV-Ray header files (core module)
 #include "core/bounding/bsptree.h"
 #include "core/math/matrix.h"
 #include "core/scene/object.h"
 #include "core/scene/tracethreaddata.h"
 
+// POV-Ray header files (POVMS module)
 #include "povms/povmsid.h"
 
+// POV-Ray header files (backend module)
 #include "backend/scene/backendscenedata.h"
 #include "backend/support/task.h"
 
@@ -224,4 +232,4 @@ void BoundingTask::SendFatalError(Exception& e)
     POVMS_SendMessage(msg);
 }
 
-}
+} // end of namespace

source/backend/bounding/boundingtask.h

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,14 +31,23 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
 #ifndef POVRAY_BACKEND_BOUNDINGTASK_H
 #define POVRAY_BACKEND_BOUNDINGTASK_H
 
+// Module config header file must be the first file included within POV-Ray unit header files
+#include "backend/configbackend.h"
+
+// Standard C++ header files
 #include <vector>
 
-#include "backend/frame.h"
+// POV-Ray header files (core module)
+#include "core/coretypes.h"
+
+// POV-Ray header files (backend module)
 #include "backend/render/rendertask.h"
 
 namespace pov
@@ -67,6 +76,6 @@ class BoundingTask : public SceneTask
         void SendFatalError(pov_base::Exception& e);
 };
 
-}
+} // end of namespace
 
 #endif // POVRAY_BACKEND_BOUNDINGTASK_H

source/backend/configbackend.h

@@ -10,7 +10,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -33,6 +33,8 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
 #ifndef POVRAY_BACKEND_CONFIGBACKEND_H

source/backend/control/benchmark.cpp

@@ -9,7 +9,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -32,14 +32,17 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
-#include <cstdio>
-
-// frame.h must always be the first POV file included (pulls in platform config)
-#include "backend/frame.h"
+// Unit header file must be the first file included within POV-Ray *.cpp files (pulls in config)
 #include "backend/control/benchmark.h"
 
+// C++ variants of standard C header files
+#include <cstdio>
+
+// POV-Ray header files (backend module)
 #include "backend/control/benchmark_ini.h"
 #include "backend/control/benchmark_pov.h"
 
@@ -77,5 +80,4 @@ unsigned int Get_Benchmark_Version (void)
     return (0x0203) ; // Benchmark version 2.03
 }
 
-}
-
+} // end of namespace

source/backend/control/benchmark.h

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2017 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,10 +31,15 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
-#ifndef BENCHMARK_H
-#define BENCHMARK_H
+#ifndef POVRAY_BACKEND_BENCHMARK_H
+#define POVRAY_BACKEND_BENCHMARK_H
+
+// Module config header file must be the first file included within POV-Ray unit header files
+#include "backend/configbackend.h"
 
 namespace pov
 {
@@ -46,6 +51,6 @@ namespace pov
 bool Write_Benchmark_File (const char *Scene_File_Name, const char *INI_File_Name) ;
 unsigned int Get_Benchmark_Version (void) ;
 
-}
+} // end of namespace
 
-#endif
+#endif // POVRAY_BACKEND_BENCHMARK_H

source/backend/control/messagefactory.cpp

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,20 +31,26 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
-#include <boost/thread.hpp>
+// Unit header file must be the first file included within POV-Ray *.cpp files (pulls in config)
+#include "backend/control/messagefactory.h"
+
+// Boost header files
 #include <boost/bind.hpp>
+#if POV_MULTITHREADED
+#include <boost/thread.hpp>
+#endif
 
-// frame.h must always be the first POV file included (pulls in platform config)
-#include "backend/frame.h"
-#include "backend/control/messagefactory.h"
+// POV-Ray header files (base module)
+#include "base/pov_err.h"
 
+// POV-Ray header files (POVMS module)
 #include "povms/povmscpp.h"
 #include "povms/povmsid.h"
 
-#include "base/pov_err.h"
-
 // this must be the last file included
 #include "base/povdebug.h"
 
@@ -129,4 +135,4 @@ void MessageFactory::SendMessage(MessageClass mc, WarningLevel level, const char
     (void)POVMS_Send(nullptr, &msg, nullptr, kPOVMSSendMode_NoReply);
 }
 
-}
+} // end of namespace

source/backend/control/messagefactory.h

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,16 +31,24 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
 #ifndef POVRAY_BACKEND_MESSAGEFACTORY_H
 #define POVRAY_BACKEND_MESSAGEFACTORY_H
 
-#include "povms/povmscpp.h"
-#include "povms/povmsid.h"
+// Module config header file must be the first file included within POV-Ray unit header files
+#include "backend/configbackend.h"
 
+// POV-Ray header files (base module)
 #include "base/messenger.h"
 
+// POV-Ray header files (POVMS module)
+#include "povms/povmscpp.h"
+#include "povms/povmsid.h"
+
+// POV-Ray header files (backend module)
 #include "backend/control/renderbackend.h"
 
 namespace pov
@@ -66,6 +74,6 @@ class MessageFactory : public GenericMessenger
                                  const UCS2 *filename = nullptr, POV_LONG line = -1, POV_LONG column = -1, POV_OFF_T offset = -1);
 };
 
-}
+} // end of namespace
 
 #endif // POVRAY_BACKEND_MESSAGEFACTORY_H

source/backend/control/renderbackend.cpp

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2018 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,17 +31,21 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
-// frame.h must always be the first POV file included (pulls in platform config)
-#include "backend/frame.h"
+// Unit header file must be the first file included within POV-Ray *.cpp files (pulls in config)
 #include "backend/control/renderbackend.h"
 
+// POV-Ray header files (base module)
+#include "base/pov_err.h"
+
+// POV-Ray header files (POVMS module)
 #include "povms/povmscpp.h"
 #include "povms/povmsid.h"
 
-#include "base/pov_err.h"
-
+// POV-Ray header files (backend module)
 #include "backend/povray.h"
 #include "backend/control/scene.h"
 #include "backend/scene/view.h"
@@ -784,4 +788,4 @@ void RenderBackend::MakeDoneResult(POVMS_Message& result)
     result = newmsg;
 }
 
-}
+} // end of namespace

source/backend/control/renderbackend.h

@@ -8,7 +8,7 @@
 /// @parblock
 ///
 /// Persistence of Vision Ray Tracer ('POV-Ray') version 3.8.
-/// Copyright 1991-2017 Persistence of Vision Raytracer Pty. Ltd.
+/// Copyright 1991-2021 Persistence of Vision Raytracer Pty. Ltd.
 ///
 /// POV-Ray is free software: you can redistribute it and/or modify
 /// it under the terms of the GNU Affero General Public License as
@@ -31,18 +31,26 @@
 ///
 /// @endparblock
 ///
+//------------------------------------------------------------------------------
+// SPDX-License-Identifier: AGPL-3.0-or-later
 //******************************************************************************
 
 #ifndef POVRAY_BACKEND_RENDERBACKEND_H
 #define POVRAY_BACKEND_RENDERBACKEND_H
 
+// Module config header file must be the first file included within POV-Ray unit header files
+#include "backend/configbackend.h"
+
+// Standard C++ header files
 #include <map>
 #include <set>
 
-#include "povms/povmscpp.h"
-
+// POV-Ray header files (base module)
 #include "base/stringutilities.h"
 
+// POV-Ray header files (POVMS module)
+#include "povms/povmscpp.h"
+
 namespace pov
 {
 
@@ -132,6 +140,6 @@ class RenderBackend : public POVMS_MessageReceiver
         void MakeDoneResult(POVMS_Message& result);
 };
 
-}
+} // end of namespace
 
 #endif // POVRAY_BACKEND_RENDERBACKEND_H