coinhistory.cpp.in

学习 open inventor 的例子

  638654246,672340264,554571553,621811493,554636833,554505761,571151650,
  554177313,739450412,705764394,520886047,588454691,773989166,925378359,
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  453907483,453775899,453775131,487395869,924131383,1344286544,1394552915,
  1109010498,1041704510,823271217,672078376,604903716,537795104,554703393,
  554506529,521017375,587995171,604903972,672275752,504174622,521082399,
  638719782,739580204,638720038,571676706,622008613,621877285,604968484,
  638588966,655431463,672274984,588125731,588126243,571348770,554571297,
  790045231,588060963,621615397,672144424,521213727,656154407,841360434,
  958932537,992552763,1076636224,1042950462,958801977,891429685,840835378,
  756555309,689314345,638785574,571610402,537989920,521147167,521082143,
  521147679,521016351,604968484,672143656,655431975,588256547,537662496,
  504108318,420089881,470552348,470683676,436932378,789715247,957817913,
  1041769534
};


struct particleinfo
{
  float x;
  float y;
  float z;
  float sx;
  float sy;
  float sz;
  float ax;
  float ay;
  float az;
  float m;
  float delay;
  float rotx;
  float srotx;
  SoSeparator *p;
  SoRotation *rot;
  SoTransform *xf;
  SoText3 * t;
  particleinfo()
  {
    x=y=z=sx=sy=sz=ax=ay=az=m=delay=rotx=srotx=0.0f;
    p=NULL; xf=NULL; t=NULL;
  };
};

int num_particles;
particleinfo *particles;

SbViewportRegion vp;

SoSeparator * root;
SoPerspectiveCamera * camera;
SoSeparator * logo;
SoRotation * logorot;

SbTime lasttime;
SbTime starttime;

SbBool firstletter;

float speedjitter = 0.5;

double flexrand(double lower, double upper)
{
  return lower + ((double)rand()/(double)RAND_MAX)*(upper-lower);
};

static void timerSensorCallback(void *data, SoSensor *)
{
  SbTime now = SbTime::getTimeOfDay();
  SbTime timediff = now-lasttime;
  lasttime = now;
  double diff = timediff.getValue(); // time in seconds
  SbTime stimediff = now-starttime;
  double sdiff = stimediff.getValue();
  int leader = 0;

  // rotate logo
  logorot->rotation.setValue(SbVec3f(0.0f, 1.0f, 0.0f), sdiff*2*3.14*0.1);

  // print text

  SbTime letterdiff = now-lastlettertime;
  double ldiff = letterdiff.getValue();
  if (ldiff>TEXTDELAY) {
    // print a new letter
    
    char tt[2];
    tt[1] = 0;
    tt[0] = text2[textpos];
    particles[currpart].t->string.setValue(tt);


    if (spos==0) {
      particles[currpart].x=XPOS;
    }
    else
      {
	SoGetBoundingBoxAction bboxa(vp);
	if (currpart==0)
	  {
	    bboxa.apply(particles[NUM_PARTICLES-1].t);
	    SbBox3f bbox = bboxa.getBoundingBox();

	    float w, h, d;
	    bbox.getSize(deltax,h,d);
	    particles[currpart].x=particles[NUM_PARTICLES-1].x+deltax*0.12f;
	  }
	else
	  {
	    bboxa.apply(particles[currpart-1].t);
	    SbBox3f bbox = bboxa.getBoundingBox();

	    float w, h, d;
	    bbox.getSize(deltax,h,d);
	    particles[currpart].x=particles[currpart-1].x+deltax*0.12f;
	  }
      }

    particles[currpart].y=-(float)line*1.5f;
    particles[currpart].z=-0.0f;

    particles[currpart].sx=flexrand(-1.0, 1.0);
    particles[currpart].sy=flexrand(-1.0, 1.0);
    particles[currpart].sz=10.0f;

    particles[currpart].srotx=2.0f;
    particles[currpart].rotx=0.0f;

    particles[currpart].delay = sdiff+FALLDELAY;

    particles[currpart].xf->translation.setValue(particles[currpart].x, 
						 particles[currpart].y, particles[currpart].z);

    particles[currpart].rot->rotation.setValue(SbVec3f(0.0f, 1.0f, 0.0f), particles[currpart].rotx);


    spos++;
    if ( ((text2[textpos] == ' ') && (spos>=LINE_BREAK))
	 || (text2[textpos] == '\n'))
      {
	line++;
	line %= NUM_LINES;
	spos=0;
      }


    textpos++;
    textpos%=textlen;

    currpart++;
    currpart %= NUM_PARTICLES;

    lastlettertime=now;


  }

  int i;

  // animate particles

  for (i=0; i<num_particles; i++)
    {
      if (sdiff-particles[i].delay<0)
	continue;
      particles[i].x+=diff*particles[i].sx;
      particles[i].y+=diff*particles[i].sy;
      particles[i].z+=diff*particles[i].sz;

      particles[i].sx+=diff*particles[i].ax;
      particles[i].sy+=diff*particles[i].ay;
      particles[i].sz+=diff*particles[i].az;

      particles[i].rotx+=diff*particles[i].srotx;

      float bound = 12.0;
      float absorb = 0.65;

      if (particles[i].y<-bound)
	{
	  particles[i].sy=1.0*fabs(particles[i].sy)*absorb;
	  particles[i].sx += speedjitter*(rand()%100)/100.0;
	  particles[i].sy += speedjitter*(rand()%100)/100.0;
	}


      if (particles[i].y>bound)
	particles[i].sy=-1.0*fabs(particles[i].sy)*absorb;

      /*    if (particles[i].x<-bound)
	    particles[i].sx=1.0*fabs(particles[i].sx)*absorb;

	    if (particles[i].x>bound)
	    particles[i].sx=-1.0*fabs(particles[i].sx)*absorb;
      */

      float sbound = 50;
  
      if (particles[i].sx>sbound)
	particles[i].sx = sbound;
      if (particles[i].sx<-sbound)
	particles[i].sx = -sbound;

      if (particles[i].sy>sbound)
	particles[i].sy = sbound;
      if (particles[i].sy<-sbound)
	particles[i].sy = -sbound;

      particles[i].xf->translation.setValue(particles[i].x, particles[i].y, particles[i].z);
      particles[i].rot->rotation.setValue(SbVec3f(0.0f, 1.0f, 0.0f), particles[i].rotx);
    }
}


SoSeparator * create_logo(SoTexture2 * texture)
{
  SoSeparator * sep = new SoSeparator;
  sep->ref();

  SoMaterial * mat = new SoMaterial;
  mat->specularColor.setValue( 1.0f, 3.0f, 1.0f );
  mat->emissiveColor.setValue( 1.0f, 1.0f, 5.0f );
  mat->diffuseColor.setValue( 1.0f, 5.0f, 1.0f );
  mat->shininess = 0.8f;
  mat->transparency = 0.7f;

  sep->addChild(mat);

  sep->addChild(new SoTextureCoordinateEnvironment);
  sep->addChild(texture);

  SoTranslation * trans = new SoTranslation;
  trans->translation.setValue(-2.0f, -2.5f, 0.2f);
  sep->addChild(trans);

  SoScale * scale = new SoScale;
  scale->scaleFactor.setValue(0.6f, 0.7f, 0.6f);
  sep->addChild(scale);
	
  // C
  SoText3 * c = new SoText3;
  c->string.setValue( "C" );
  c->parts.setValue( SoText3::ALL );
  sep->addChild(c);

  SoSeparator * separator = new SoSeparator;