#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <Performer/pf/pfTraverser.h>
#include <Performer/pf/pfChannel.h>
#include <Performer/pf/pfLightSource.h>
#include <Performer/pf/pfDCS.h>
#include <Performer/pf/pfText.h>
#include <Performer/pr/pfString.h>
#include <Performer/pfdu.h>
#include <pfcave.h>

void create_scene(pfChannel *chan);
int navigate(pfTraverser *trav,void *data);
void add_text(pfGroup *parent);


int main(int argc,char **argv)
{
 pfInit();
 pfCAVEConfig(&argc,argv,NULL);
 CAVEFar = 1000;
 pfConfig();
 pfCAVEInitChannels();
 create_scene(pfCAVEMasterChan());
 while (!CAVEgetbutton(CAVE_ESCKEY))
	{
	pfSync();
	pfCAVEPreFrame();
	pfFrame();
	pfCAVEPostFrame();
	}
 pfCAVEHalt();
 pfExit();
 return 0;
}

#define SPEED 2.0f

int navigate(pfTraverser *trav,void *data)
{
data; /* Make compiler shut up about unused argument */
 pfDCS *nav_dcs = (pfDCS *) trav->getNode();
 float jx=CAVE_JOYSTICK_X,jy=CAVE_JOYSTICK_Y;
 if (fabs(jx) > 0.2) CAVENavRot(1.0f*jx,'z');
 if (fabs(jy) > 0.2)
	{
	float w[3];
	CAVEGetVector(CAVE_WAND_FRONT,w);
	CAVENavTranslate(w[0]*jy*SPEED,w[1]*jy*SPEED,w[2]*jy*SPEED);
	}
 pfCAVEDCSNavTransform(nav_dcs);
 return PFTRAV_CONT;
}

void create_scene(pfChannel *chan)
{
 pfScene *scene = new pfScene;
 pfGeoState *gstate = new pfGeoState;
 pfDCS *dcs = new pfDCS;
 gstate->setMode(PFSTATE_ENLIGHTING, PF_ON);
 gstate->setMode(PFSTATE_CULLFACE, PFCF_OFF);
 scene->setGState(gstate);
 scene->addChild(new pfLightSource);
 scene->addChild(dcs);
 dcs->setTravFuncs(PFTRAV_APP,navigate,NULL);
 add_text(dcs);
 chan->setScene(scene);
}

void add_text(pfGroup *parent)
{
 pfText *text = new pfText;
 pfString *string = new pfString;
 pfFont *fnt;
 pfFilePath(".:/usr/src/Performer/data");
 fnt = pfdLoadFont_type1("Times-Elfin",PFDFONT_EXTRUDED);
 if (fnt == NULL)
	{
	pfNotify(PFNFY_FATAL,PFNFY_PRINT, "Couldnt find font - Times-Elfin");
	exit(1);
	}
 string->setFont(fnt);
 string->setMode(PFSTR_JUSTIFY, PFSTR_MIDDLE);
 string->setColor(0.8f, 0.8f, 0.0f, 1.0f);
 string->setString("Text! In 3-D!");
 string->flatten();
 text->addString(string);
 parent->addChild(text);
}