C++ POVMS_Object::Exist方法代码示例

ShelloutAction::ShelloutAction(const ShelloutProcessing *sp, unsigned int attribID, POVMS_Object& opts): returnAction(ignore), returnNegate(false), isSet(false)
{
    if (opts.Exist(attribID))
    {
        POVMS_Object attr;

        opts.Get(attribID, attr);
        if (attr.Exist(kPOVAttrib_CommandString))
        {
            rawCommand = attr.GetString(kPOVAttrib_CommandString);
            if (sp->ExtractCommand(rawCommand, command, rawParameters))
            {
                int action = attr.TryGetInt(kPOVAttrib_ReturnAction, (int) ignore);
                switch (tolower(action))
                {
                case ignore:
                case skipOne:
                case skipAll:
                case quit:
                case abort:
                case fatal:
                    returnAction = (Action) tolower(action);
                    returnNegate = isupper(action);
                    isSet = true;
                    break;

                default:
                    break;
                }
            }
        }
    }
}

// Sets the options to be used on the next render. Accepts a vfeRenderOptions
// instance as its only parameter, and returns any one of a number of possible
// error codes (and sets m_LastError), as documented below:
//
//   vfeFailedToInitObject           - this is an internal error
//   vfeFailedToSetMaxThreads        - self-explanatory
//   vfeFailedToParseINI             - an INI file specified could not be parsed
//   vfeFailedToSetSource            - the source file specified could not be set
//   vfeFailedToParseCommand         - a command-line option was invalid
//   vfeNoInputFile                  - no input file specified either directly or via INI
//   vfeRenderBlockSizeTooSmall      - self-explanatory
//   vfeFailedToWriteINI             - a request to write the render options to an INI file failed
//   vfeUnsupportedOptionCombination - unsupported option combination
//
// If vfeRenderOptions explicitly specifies a source file, it will override
// any set via a parsed INI file. Furthermore, any source file set via a
// command-line option overrides both of the above.
//
// Note that it is your responsibility to add any default INI files that should
// be processed to the INI file list; neither SetOptions() nor any other part
// of the VFE or POV-Ray code will do that for you. This includes non-platform
// specific files such as a potential povray.ini in the CWD.
int vfeSession::SetOptions (vfeRenderOptions& opts)
{
  int                     err;
  UCS2                    str [MAX_PATH];
  POVMSObject             obj;
  vfeProcessRenderOptions options(this);

  m_OutputToFileSet = false;
  m_UsingAlpha = false;
  m_RenderingAnimation = false;
  m_RealTimeRaytracing = false;
  m_ClocklessAnimation = false;
  m_RenderWidth = m_RenderHeight = 0;
  ClearOptions();

  if ((err = POVMSObject_New (&obj, kPOVObjectClass_RenderOptions)) != kNoErr)
    return (m_LastError = vfeFailedToInitObject) ;

  if ((err = POVMSUtil_SetInt (&obj, kPOVAttrib_MaxRenderThreads, opts.m_ThreadCount)) != kNoErr)
    return (m_LastError = vfeFailedToSetMaxThreads) ;

  // we set this here for potential use by the IO permissions path checking code
  m_InputFilename = opts.m_SourceFile;

  // most likely povray.ini will be the first INI file processed here (as it's included by default)
  for (vector<UCS2String>::iterator i = opts.m_IniFiles.begin(); i != opts.m_IniFiles.end(); i++)
  {
    // we call TestAccessAllowed() here, even though ParseFile() will do it also, since if
    // access is denied, the reason will not be obvious (ParseFile() just returns kCannotOpenFileErr).
    if (!TestAccessAllowed (Path(*i), false))
      return (m_LastError = vfeIORestrictionDeny);

    if ((err = options.ParseFile (UCS2toASCIIString(*i).c_str(), &obj)) != kNoErr)
      return (m_LastError = vfeFailedToParseINI) ;

    // we keep this up to date since the IO permissions feature will use the current input
    // filename to determine the path for default read/write permission in the scene dir.
    int n = sizeof (str) ;
    if ((err = POVMSUtil_GetUCS2String (&obj, kPOVAttrib_InputFile, str, &n)) == kNoErr)
      if (m_InputFilename != str)
        m_InputFilename = str;
  }

  // m_SourceFile overrides any source file set by the INI files
  if (opts.m_SourceFile.empty() == false)
  {
    m_InputFilename = opts.m_SourceFile;
    if ((err = POVMSUtil_SetUCS2String (&obj, kPOVAttrib_InputFile, opts.m_SourceFile.c_str())) != kNoErr)
      return (m_LastError = vfeFailedToSetSource);
  }

  // any source file set on the command-line overrides a source file set another way
  for (vector<string>::iterator i = opts.m_Commands.begin(); i != opts.m_Commands.end(); i++)
  {
    if ((err = options.ParseString (i->c_str(), &obj)) != kNoErr)
      return (m_LastError = vfeFailedToParseCommand) ;
    int n = sizeof (str) ;
    if ((err = POVMSUtil_GetUCS2String (&obj, kPOVAttrib_InputFile, str, &n)) == kNoErr)
      if (m_InputFilename != str)
        m_InputFilename = str;
  }

  int n = sizeof (str) ;
  if ((err = POVMSUtil_GetUCS2String (&obj, kPOVAttrib_InputFile, str, &n)) != kNoErr)
    return (m_LastError = vfeNoInputFile);
  m_InputFilename = str;

  POVMSUtil_GetInt (&obj, kPOVAttrib_Width, &m_RenderWidth) ;
  POVMSUtil_GetInt (&obj, kPOVAttrib_Height, &m_RenderHeight) ;

  std::list<Path> libpaths;
  POVMS_Object ropts (obj) ;
  if (ropts.Exist (kPOVAttrib_LibraryPath))
  {
    POVMS_List pathlist;
    ropts.Get (kPOVAttrib_LibraryPath, pathlist) ;

    // we take the opportunity to remove any duplicates that are in the path list.
//.........这里部分代码省略.........

void Scene::StartParser(POVMS_Object& parseOptions)
{
    size_t seed = 0; // TODO

    // A scene can only be parsed once
    if (parserControlThread == nullptr)
        parserControlThread = new std::thread(boost::bind(&Scene::ParserControlThread, this));
    else
        return;

    if (parseOptions.Exist(kPOVAttrib_Version))
    {
        sceneData->languageVersion = clip(int(parseOptions.GetFloat(kPOVAttrib_Version) * 100.0f + .5f), 100, 10000);
        sceneData->languageVersionSet = true;
    }

    sceneData->warningLevel = clip(parseOptions.TryGetInt(kPOVAttrib_WarningLevel, 9), 0, 9);

    sceneData->inputFile = parseOptions.TryGetUCS2String(kPOVAttrib_InputFile, "object.pov");
    sceneData->headerFile = parseOptions.TryGetUCS2String(kPOVAttrib_IncludeHeader, "");

    DBL outputWidth  = parseOptions.TryGetFloat(kPOVAttrib_Width, 160);
    DBL outputHeight = parseOptions.TryGetFloat(kPOVAttrib_Height, 120);
    sceneData->aspectRatio = outputWidth / outputHeight;

    sceneData->defaultFileType = parseOptions.TryGetInt(kPOVAttrib_OutputFileType, DEFAULT_OUTPUT_FORMAT); // TODO - should get DEFAULT_OUTPUT_FORMAT from the front-end
    sceneData->clocklessAnimation = parseOptions.TryGetBool(kPOVAttrib_ClocklessAnimation, false); // TODO - experimental code

    sceneData->splitUnions = parseOptions.TryGetBool(kPOVAttrib_SplitUnions, false);
    sceneData->removeBounds = parseOptions.TryGetBool(kPOVAttrib_RemoveBounds, true);
    sceneData->boundingMethod = clip<int>(parseOptions.TryGetInt(kPOVAttrib_BoundingMethod, 1), 1, 2);
    if(parseOptions.TryGetBool(kPOVAttrib_Bounding, true) == false)
        sceneData->boundingMethod = 0;

    sceneData->outputAlpha = parseOptions.TryGetBool(kPOVAttrib_OutputAlpha, false);
    if (!sceneData->outputAlpha)
        // if we're not outputting an alpha channel, precompose the scene background against a black "background behind the background"
        // (NB: Here, background color is still at its default of <0,0,0,0,1> = full transparency; we're changing that to opaque black.)
        sceneData->backgroundColour.Clear();

    // NB a value of '0' for any of the BSP parameters tells the BSP code to use its internal default
    sceneData->bspMaxDepth = parseOptions.TryGetInt(kPOVAttrib_BSP_MaxDepth, 0);
    sceneData->bspObjectIsectCost = clip<float>(parseOptions.TryGetFloat(kPOVAttrib_BSP_ISectCost, 0.0f), 0.0f, HUGE_VAL);
    sceneData->bspBaseAccessCost = clip<float>(parseOptions.TryGetFloat(kPOVAttrib_BSP_BaseAccessCost, 0.0f), 0.0f, HUGE_VAL);
    sceneData->bspChildAccessCost = clip<float>(parseOptions.TryGetFloat(kPOVAttrib_BSP_ChildAccessCost, 0.0f), 0.0f, HUGE_VAL);
    sceneData->bspMissChance = clip<float>(parseOptions.TryGetFloat(kPOVAttrib_BSP_MissChance, 0.0f), 0.0f, 1.0f - EPSILON);

    sceneData->realTimeRaytracing = parseOptions.TryGetBool(kPOVAttrib_RealTimeRaytracing, false);

    if(parseOptions.Exist(kPOVAttrib_Declare) == true)
    {
        POVMS_List ds;

        parseOptions.Get(kPOVAttrib_Declare, ds);
        for(int i = 1; i <= ds.GetListSize(); i++)
        {
            std::ostringstream sstr;
            POVMS_Attribute a;
            POVMS_Object d;

            ds.GetNth(i, d);
            d.Get(kPOVAttrib_Value, a);
            switch (a.Type())
            {
                case kPOVMSType_CString:
                    sstr << "\"" + d.TryGetString(kPOVAttrib_Value, "") + "\"";
                    break;

                case kPOVMSType_Float:
                    sstr << d.TryGetFloat(kPOVAttrib_Value, 0.0);
                    break;

                default:
                    // shouldn't happen unless we make a coding error
                    throw POV_EXCEPTION(kParamErr, "Invalid type passed in declare list");
            }

            sceneData->declaredVariables.insert(make_pair(d.GetString(kPOVAttrib_Identifier), sstr.str()));
        }
    }

    // do parsing
    sceneThreadData.push_back(dynamic_cast<TraceThreadData *>(parserTasks.AppendTask(new ParserTask(
        sceneData, pov_parser::ParserOptions(bool(parseOptions.Exist(kPOVAttrib_Clock)), parseOptions.TryGetFloat(kPOVAttrib_Clock, 0.0), seed)
        ))));

    // wait for parsing
    parserTasks.AppendSync();

    // do bounding - we always call this even if the bounding is turned off
    // because it also generates object statistics
    sceneThreadData.push_back(dynamic_cast<TraceThreadData *>(parserTasks.AppendTask(new BoundingTask(
        sceneData,
        clip<int>(parseOptions.TryGetInt(kPOVAttrib_BoundingThreshold, DEFAULT_AUTO_BOUNDINGTHRESHOLD),1,SIGNED16_MAX),
        seed
        ))));

    // wait for bounding
    parserTasks.AppendSync();

//.........这里部分代码省略.........