void ellipse(vec p,float r)
{
  ellipse(p.x,p.y,r,r);
}
void line(vec a,vec b)
{
  line(a.x,a.y,b.x,b.y);
}
void println(vec v)
{
  println("point: "+v.x+","+v.y);
}
void curveVertex(vec v)
{
  curveVertex(v.x,v.y);
}
void translate(vec v)
{
  translate(v.x,v.y);
}
void drawMasses(mass m[])
{
  if(m==null||m.length<=0)
    return;
  for(int i=0;i<m.length;i++)
  {
    if(m[i]==null)
    {
//      println(i);
//      println(m.length);
      break;
    }
    stroke(150);
    ellipse(m[i].p,5);
    if(i>0)
      line(m[i-1].p,m[i].p);
  }
}
void drawDummy(vec dummy)
{
  pushMatrix();
  translate(dummy.x,dummy.y);
  scale(.5);
  noFill();
  stroke(80);
  image(imgDummy,origin);
  popMatrix();
}
void drawTabletStroke(penStroke ps,float k)
{
  drawTabletStroke(ps,0,k);
}

void drawTabletStroke(penStroke ps,int gt,float k)
{
  if(ps==null)
    return;
  if(ps.points.length<1)
    return;
  color c=color(100);
  noFill();

  switch(gt)
  {
    case -1:
    case 0:
    break;
    case 1:
      c=color(50,255,50);
    break;
    case 2:
      c=color(80,80,255);
    break;
    case 3:
      c=color(255,50,50);
    break;  
  }
  vec lastP=new vec();
  for(int i=0;i<ps.points.length;i++)
  {
    vec p=new vec(ps.points[i].p);
    if(i==0)  lastP=new vec(p);    
    float press=ps.points[i].press;
    stroke(red(c),green(c),blue(c),k*255*press/1023);
//    stroke(red(c),green(c),blue(c),k*255);
//    ellipse(p,50*press/1023);
    if(displayUI)
      ellipse(p,5);
    line(p.x,p.y,lastP.x,lastP.y);
    lastP=new vec(p);
  }
  noTint();
}
void drawTabletUI(float r)
{
  if(!displayUI)
    return;
  stroke(255,80);
  noFill();
  ellipse(mouseX,mouseY,2+ r*.5,2+ r*.5);
//  line(mouseX,mouseY, mouseX + tablet.tiltX, mouseY + tablet.tiltY);
}