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Initial check-in based on OpenGL Performer 2.4 tree.
-flynnt

//
// Copyright 1995, Silicon Graphics, Inc.
// ALL RIGHTS RESERVED
//
// This source code ("Source Code") was originally derived from a
// code base owned by Silicon Graphics, Inc. ("SGI")
// 
// LICENSE: SGI grants the user ("Licensee") permission to reproduce,
// distribute, and create derivative works from this Source Code,
// provided that: (1) the user reproduces this entire notice within
// both source and binary format redistributions and any accompanying
// materials such as documentation in printed or electronic format;
// (2) the Source Code is not to be used, or ported or modified for
// use, except in conjunction with OpenGL Performer; and (3) the
// names of Silicon Graphics, Inc.  and SGI may not be used in any
// advertising or publicity relating to the Source Code without the
// prior written permission of SGI.  No further license or permission
// may be inferred or deemed or construed to exist with regard to the
// Source Code or the code base of which it forms a part. All rights
// not expressly granted are reserved.
// 
// This Source Code is provided to Licensee AS IS, without any
// warranty of any kind, either express, implied, or statutory,
// including, but not limited to, any warranty that the Source Code
// will conform to specifications, any implied warranties of
// merchantability, fitness for a particular purpose, and freedom
// from infringement, and any warranty that the documentation will
// conform to the program, or any warranty that the Source Code will
// be error free.
// 
// IN NO EVENT WILL SGI BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT
// LIMITED TO DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES,
// ARISING OUT OF, RESULTING FROM, OR IN ANY WAY CONNECTED WITH THE
// SOURCE CODE, WHETHER OR NOT BASED UPON WARRANTY, CONTRACT, TORT OR
// OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
// PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM,
// OR AROSE OUT OF USE OR RESULTS FROM USE OF, OR LACK OF ABILITY TO
// USE, THE SOURCE CODE.
// 
// Contact information:  Silicon Graphics, Inc., 
// 1600 Amphitheatre Pkwy, Mountain View, CA  94043, 
// or:  http://www.sgi.com
//
//
// hello.c: Welcome Performer program for programmer's guide
//
// $Revision: 1.1 $ 
// $Date: 2000/11/21 21:39:38 $
//

#include <Performer/pfdu.h>
#include <Performer/pf/pfChannel.h>
#include <Performer/pf/pfLightSource.h>
#include <Performer/pf/pfText.h>
#include <Performer/pr/pfFont.h>
#include <Performer/pr/pfString.h>
#include <stdlib.h>

int
main (int argc, char *argv[])
{
    // Initialize and configure OpenGL Performer
    pfInit();
    
    pfMultiprocess( PFMP_DEFAULT );			
    
    pfConfig();
    
    // Look for files in PFPATH, ".", and  "/usr/share/Performer/data"
    pfFilePath(".:/usr/share/Performer/data:../../../../data");
    
    // Create a scene
    pfScene *scene = new pfScene;
    
    // Create a lit scene pfGeoState for the scene
    pfGeoState *gstate = new pfGeoState;
    gstate->setMode(PFSTATE_ENLIGHTING, PF_ON);
    // attach the pfGeoState to the scene
    scene->setGState(gstate);
    
    // put a default light source in the scene
    scene->addChild(new pfLightSource);
    
    // Create 3D message and place in scene.
    pfString *str = new pfString;
    pfFont *fnt = pfdLoadFont_type1("Times-Elfin",PFDFONT_EXTRUDED);
    if (fnt == NULL)
    {
	pfNotify(PFNFY_FATAL,PFNFY_PRINT, "Couldnt find font - Times-Elfin");
	exit(1);
    }

    str->setFont(fnt);
    str->setMode(PFSTR_JUSTIFY, PFSTR_MIDDLE);
    str->setColor(1.0f, 0.0f, 0.8f, 1.0f);
    str->setString((argc > 1) ? argv[1] : "Welcome to OpenGL Performer");
    str->flatten();
    
    pfText *text = new pfText;
    text->addString(str);
    scene->addChild(text);
    
    // Create and configure a pfPipe and pfChannel.
    pfPipe *pipe = pfGetPipe(0);
    pfChannel *chan = new pfChannel(pipe);
    chan->setFOV(60.0f, 0.0f);
    chan->setScene(scene);
    
    // Determine extent of scene's geometry.
    pfSphere bsphere;
    text->getBound(&bsphere);
    chan->setNearFar(1.0f, 10.0f*bsphere.radius);
    
    // Spin text for 15 seconds.
    double startTime = pfGetTime();
    double t;
    while ((t = pfGetTime() - startTime) < 15.0f)
    {
	pfCoord	   view;
	float      s, c;
	
	// Compute new view position, rotating around text.
	pfSinCos(45.0f*t, &s, &c);
	view.hpr.set(45.0f*t, -5.0f, 0.0f);
	view.xyz.set(
		     2.0f * bsphere.radius * s,
		     -2.0f * bsphere.radius * c,
		     0.3f * bsphere.radius);
	chan->setView(view.xyz, view.hpr);
	
	// Initiate cull/draw processing for this frame.
	pfFrame();
    }
    
    // Terminate parallel processes and exit.
    pfExit();
    return 0;
}