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GCLApp.cc

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/*
    File:       GCLApp.cc

    Function:   

    Author:     Andrew Willmott

    Notes:      
*/

#include "gcl/GCLApp.h"
#include "gcl/Avars.h"
#include "gcl/Readers.h"
#include <stdlib.h>

#define DBG_COUT if (0) cerr


// --- GCLApp --------------------------------------------------------------


Char            **GCLApp::files;
Int             GCLApp::numFiles;
StrConstArray   GCLApp::avarNames;
ScalarList      GCLApp::avarVals;

GCLApp::GCLApp() : 
#ifndef GCL_NO_GL
    itsScenePane(0),
#endif
    itsCamera(0),
    frame(1),
    time(0.0),
    fps(24.0),
    anim(0),
    avarList(0)
{
}

Void GCLApp::ReadScene(FileName &sceneFile)
{
    scene = SceneReader::Load(sceneFile);
    if (!scene)
        return;

    if (zUp)
        scene->Apply(Rotation(vl_x, vl_halfPi));
    else if (zDown)
        scene->Apply(Rotation(vl_x, -vl_halfPi));
    
    if (!noScale)
        scene->Normalise();
}

Void GCLApp::GetFileArgs(Int argc, Char *argv[])
{
    // Save away a pointer to the list of file names
    // I've checked the source of libarg.c -- it
    // doesn't free anything, so this is safe.

    files = argv;
    numFiles = argc;
}

Void GCLApp::GetAvarArgs(Int argc, Char *argv[])
{
    Int     i;
    String  suffix;

    for (i = 0; i < argc; )
    {
        StrConst avarName = argv[i++];
        
        DBG_COUT << "looking at " << avarName << " suff = " << avarName.Suffix(2) << endl;

        suffix = avarName.Suffix(2);
        if (suffix == "_c" || suffix == "_v" || suffix == "_q")
        {
            String stub, newAvar;

            stub = avarName.Prefix(-2);

            DBG_COUT << "got vector type " << stub << endl;

            newAvar.Printf("%s_x", stub.CString());
            avarNames.Append(newAvar.Detach());
            avarVals.Append(atof(argv[i++]));
            newAvar.Printf("%s_y", stub.CString());
            avarNames.Append(newAvar.Detach());
            avarVals.Append(atof(argv[i++]));
            if (suffix[1] == 'v' || suffix[1] == 'q')
            {
                newAvar.Printf("%s_z", stub.CString());
                avarNames.Append(newAvar.Detach());
                avarVals.Append(atof(argv[i++]));
            }
            if (suffix[1] == 'q')
            {
                newAvar.Printf("%s_w", stub.CString());
                avarNames.Append(newAvar.Detach());
                avarVals.Append(atof(argv[i++]));
            }
        }
        else
        {
            avarNames.Append(avarName);
            avarVals.Append(atof(argv[i++]));
        }       
    }

    if (i != argc)
    {
        cerr << "Error: wrong number of avar arguments." << endl;
        exit(1);
    }
}

Void GCLApp::SetAvars(scScenePtr scene)
{
    Int             i;
    CreateAvarList  theAvarList;

    frame = -1;
        
    scene->ApplyAction(theAvarList);

#ifdef DEBUG
    cout << "set avars:" << endl;
    for (i = 0; i < avarNames.NumItems(); i++)
        cout << "avar " << avarNames[i] << " = " << avarVals[i] << endl;
    cout << "scene avars:" << endl;
    for (i = 0; i < theAvarList.avarList->NumItems(); i++)
        cout << theAvarList.avarList->Item(i).name << " = " 
            << theAvarList.avarList->Item(i).value << endl;
#endif

    scene->Set(theAvarList.avarList);
    
    for (i = 0; i < avarNames.NumItems(); i++)
    {
        StrConst avarName = avarNames[i];

        if (avarName == "frame")
            frame = (Int) avarVals[i];
        else if (avarName == "time")
            time = avarVals[i];
        else if (itsCamera->CheckAvar(avarName, avarVals[i]))
            ;
        else if (!theAvarList.avarList->SetAvar(avarNames[i], avarVals[i]))
            cerr << "No such avar in scene: " << avarNames[i] 
                 << " (ignoring) " << endl;
    }
    
    itsCamera->SetupFromParams();
}

Void GCLApp::SetAvarsFromAnim(scScenePtr scene)
{
    if (!avarList)
    {
        avarList = (scAvarList*) scene->FindFirst(aAvarList);

        if (!avarList)
        {
            CreateAvarList  theAvarList;

            cout << "creating avar list" << endl;
            scene->ApplyAction(theAvarList);
            scene->Set(theAvarList.avarList);
            avarList = theAvarList.avarList;
        }
    }
    
    time = (frame - 1.0) / fps;
    if (anim)
        anim->SetAvarList(avarList, itsCamera, time);
}

ArgForm *GCLApp::GetOptionList()
{
#ifdef UNFINISHED
    return(arg_to_form(0,
        "-bgr %F", &grey,
            "Set background grey level",
        "-bgc %F %F %F", clr, clr + 1, clr + 2, 
            "Set colour background",
        "-defClr %F %F %F", defClr, defClr + 1, defClr + 2, 
            "Set default model colour",
        "-noScale", ARG_FLAG(&noScale),
            "Don't rescale scene.",
//      "-wire", ARG_FLAG(&wireFrame),
//          "Draw wire-frame.",
        "-zup", ARG_FLAG(&zUp),
            "Z axis is up (default is Y)",
        "-zdown", ARG_FLAG(&zDown),
            "Z axis is down",
//      "-noLight", ARG_FLAG(&noLight),
//          "no lighting",
//      "-showBF", ARG_FLAG(&showBF),
//          "show back faces of polygons",

//      "-anim %S",     &animFile,                  "specify animation file",
        "-fps %F",      &fps,                       "set frames per sec [default 24]",
//      "-start %d",    &startFrame,                "start frame [1]",
//      "-end %d",      &endFrame,                  "end frame [24]",
//      "-step %d",     &frameStep,                 "frame step [1]",

        "-set", ARG_SUBR(GetAvarArgs),
            "Set avar, e.g. -set light 0.5 height 0.2",

        // Output options       
//      "-size %d", &size,
//          "Set output size",
        "-xysize %d %d", &xsize, &ysize,
            "Set output size",
        0)
    );
#else
    return(0);
#endif
}

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