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SceneConvert.cc

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/*
    File:       SceneConvert.cc

    Function:   command-line program to convert scene files

    Author:     Andrew Willmott

    Notes:      
*/

#include <stdlib.h>

#include "cl/ArgParse.h"
#include "gcl/SceneLang.h"
#include "gcl/Readers.h"
#include "gcl/Writers.h"
#include "gcl/MRModel.h"
#include "gcl/Avars.h"

static StrConstArray    gAvarNames;
static ScalarList       gAvarVals;

static Int avarArg(Int argc, Char **argv)
{
    Int     i;
    GCLReal val;
    
    if (argc % 2 == 1)
    {
        cerr << "Error: wrong number of avar arguments." << endl;
        exit(1);
    }
    
    for (i = 0; i < argc; i += 2)
    {
        gAvarNames.Append(argv[i]);
        val = atof(argv[i + 1]);
        gAvarVals.Append(val);
    }
    
    return(0);
}

Void SetAvars(scScenePtr scene)
{
    Int             i;
    CreateAvarList  makeAvarList;

    for (i = 0; i < gAvarNames.NumItems(); i++)
        cout << "avar " << gAvarNames[i] << " = " << gAvarVals[i] << endl;
        
    scene->ApplyAction(makeAvarList);
#ifdef DEBUG
    cout << "scene avars:" << endl;
    for (i = 0; i < makeAvarList.avarList->NumItems(); i++)
        cout << makeAvarList.avarList->Item(i).name << " = " 
            << makeAvarList.avarList->Item(i).value << endl;
#endif

    scene->Set(makeAvarList.avarList);
    
    for (i = 0; i < gAvarNames.NumItems(); i++)
        if (!makeAvarList.avarList->SetAvar(gAvarNames[i], gAvarVals[i]))
            cerr << "No such avar in scene: " << gAvarNames[i] 
                 << " (ignoring) " << endl;
}

static Void PrintSceneInfo(scScenePtr scene)
{
    FindDecInfo decInfo;
    
    scene->Decimate(decInfo, DecTris);
    
    cout << "polygons " << decInfo.numPolys << endl;
    cout << "triangles " << decInfo.numTris << endl;
}

Int main(Int argc, Char *argv[])
{
    FileName        inPath, outPath;
    Char            *file1 = 0, *file2 = 0;
    Int             formats, noRescale, writeCMB;
    scScenePtr      scene;
    Double          meshComp;
    ArgForm         *arg_format;
    
    // command-line options
    
    meshComp = 1.0;
    
    arg_format = arg_to_form(0,
        "",                                     "Usage: slconv [options]",
        
        "[%S]", &file1,                         "Input scene file",
        "[%S]", &file2,                         "Output scene file",
        "-set", ARG_SUBR(avarArg),              "Set avar, e.g. -set light 0.5 height 0.2",
        "-meshComp %F", &meshComp,              "Set mesh complexity for MR models",
        "-writeMRB", ARG_FLAG(&writeCMB),       "Write multires model(s) in binary format",
        "-noRescale", ARG_FLAG(&noRescale),     "Don't rescale the scene",
        "-formats", ARG_FLAG(&formats),         "List supported file formats",
        0); 

    if (arg_parse_argv(argc, argv, arg_format) < 0)
        return(1);

    if (formats)
    {
        cout << "Input formats:" << endl;
        SceneReader::PrintSupportedFormats(cout);
        cout << "Output formats:" << endl;
        SceneWriter::PrintSupportedFormats(cout);
        return(0);
    }

    if (!file1)
    {
        arg_form_print(arg_format);
        return(0);
    }
    
    inPath.SetPath(file1);
    if (file2)
        outPath.SetPath(file2);

    // normalise or not? 

    slInit();
    scMRModel::SetComplexity(meshComp);
    scene = SceneReader::Load(inPath);
    if (!scene)
        return(1);

    if (!noRescale)
        scene->Normalise();

    SetAvars(scene);

    if (writeCMB)
    {
        // write out models as binary
        MRModelsFinder  models;
        Int             i;
        
        scene->ApplyAction(models);

        for (i = 0; i < models.NumModels(); i++)
        {
            cout << "writing model " << models.Model(i)->modelFile.GetFile() << endl;
            models.Model(i)->WriteBinary();
        }
    }
    else
    if (!file2)
        // dump information
        PrintSceneInfo(scene);  
    else
        // write out scene
        SceneWriter::Save(scene, outPath);
    
    return(0);
}

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