//*****************************************************************************
// CURVE TWEENING, Jarek Rossignac, 2008
//*****************************************************************************
void actions()  {strokeWeight(1);
  if (mousePressed&&mouseIsInWindow())
         if (keyPressed) {
              if (key=='c') C.translateBy(MouseDrag());
              if ((key=='x')||(key=='t')) C.rotateBy( angle( V(C.P[C.p],Mouse()) , V(C.P[C.p],Pmouse()) ) );
              if ((key=='x')||(key=='z')) C.scaleBy(1.-d(C.P[C.p],Mouse()) / d(C.P[C.p],Pmouse()) );
              if (key=='s') C.localSmooth(); if (key=='v') C.localPull();
              if (key=='i') C.dragVertex(mouseDrag()); } 
           else { if ((mousePressed)&&(Mouse().isInWindow())&&(!keyPressed)) C.dragVertex(MouseDrag());};
   if(showCurve) {
       strokeWeight(1); stroke(blue); C.drawCurve(); 
       if(showEnds) {strokeWeight(2); stroke(yellow); C.drawEnds();};
       if(showVertices) {strokeWeight(5); stroke(dblue); C.drawPoints(); strokeWeight(1);  if (showVertexIds) {fill(dblue); C.drawVertexIDs(); };};
       noStroke(); fill(yellow); C.P[C.m[0]].show(2); fill(cyan); C.P[C.m[1]].show(2); fill(orange); C.P[C.m[2]].show(2); 
       noFill(); stroke(magenta); strokeWeight(1); C.P[C.p].show(3); noStroke();
      noFill();
       };
       
   strokeWeight(2);
   if(global) { ops=0; stroke(dgreen); if(throughEnds) C.addEnds(); C.subdivideGlobal(); if(throughEnds) C.chopEnds(); gops=ops;}; 
   if(spans)  { ops=0;stroke(dblue); if(throughEnds) C.addEnds(); C.subdivideSpans(); if(throughEnds) C.chopEnds(); sops=ops;}; 
   if(rings)  {ops=0; stroke(dred); if(throughEnds) C.addEnds(); if(recursive) C.rollRing(); else C.ringRoll();  if(throughEnds) C.chopEnds(); rops=ops;}; 
       
   strokeWeight(1);
   }  // end actions