redo with new anti-GLucose
[SugarCubes.git] / DanHorwitz.pde
index 76dd0d3d0b399098dbafcb0a99b4bd40844edbf4..cdec36b6b1d160b44e8e3aeeda1a1d1c62a76621 100644 (file)
@@ -1,12 +1,12 @@
 //----------------------------------------------------------------------------------------------------------------------------------
 public class Pong extends DPat {
        SinLFO x,y,z,dx,dy,dz;
-       float cRad;     DParam pSize;
+       float cRad;     BasicParameter pSize;
        Pick    pChoose;
-       xyz     v = new xyz(), vMir =  new xyz();
+       PVector v = new PVector(), vMir =  new PVector();
 
-       Pong(GLucose glucose) {
-               super(glucose);
+       Pong(LX lx) {
+               super(lx);
                cRad = mMax.x/10;
                addModulator(dx = new SinLFO(6000,  500, 30000  )).trigger();
                addModulator(dy = new SinLFO(3000,  500, 22472  )).trigger();
@@ -15,19 +15,19 @@ public class Pong extends DPat {
                addModulator(y  = new SinLFO(cRad, mMax.y - cRad, 0)).trigger();        y.modulateDurationBy(dy);
                addModulator(z  = new SinLFO(cRad, mMax.z - cRad, 0)).trigger();        z.modulateDurationBy(dz);
            pSize       = addParam      ("Size"                 , 0.4   );
-           pChoose = addPick   ("Animiation"   , 0, 2, new String[] {"Pong", "Ball", "Cone"}   );
+           pChoose = addPick   ("Animiation"   , 2, 2, new String[] {"Pong", "Ball", "Cone"}   );
        }
 
-       void    StartRun(double deltaMs)        { cRad = mMax.x*pSize.Val()/6; }
-       color   CalcPoint(xyz p)                {
+       void    StartRun(double deltaMs)        { cRad = mMax.x*val(pSize)/6; }
+       color   CalcPoint(PVector p)            {
                v.set(x.getValuef(), y.getValuef(), z.getValuef());
                v.z=0;p.z=0;// ignore z dimension
                switch(pChoose.Cur()) {
-               case 0: vMir.set(mMax); vMir.subtract(p);
-                               return lx.hsb(lxh(),100,c1c(1 - min(v.distance(p), v.distance(vMir))*.5/cRad));         // balls
-               case 1: return lx.hsb(lxh(),100,c1c(1 - v.distance(p)*.5/cRad));                                                        // ball
+               case 0: vMir.set(mMax); vMir.sub(p);
+                               return lx.hsb(lxh(),100,c1c(1 - min(v.dist(p), v.dist(vMir))*.5/cRad));         // balls
+               case 1: return lx.hsb(lxh(),100,c1c(1 - v.dist(p)*.5/cRad));                                                    // ball
                case 2: vMir.set(mMax.x/2,0,mMax.z/2);
-                               return lx.hsb(lxh(),100,c1c(1 - CalcCone(p,v,vMir) * max(.02,.45-pSize.Val())));        // spot
+                               return lx.hsb(lxh(),100,c1c(1 - calcCone(p,v,vMir) * max(.02,.45-val(pSize))));         // spot
                }
                return lx.hsb(0,0,0);
        }
@@ -49,16 +49,16 @@ public class NDat {
 
 public class Noise extends DPat
 {
-       int                     CurAnim, iSymm;
-       int             XSym=1,YSym=2,RadSym=3;
-       float           zTime , zTheta=0, zSin, zCos, rtime, ttime, transAdd;
-       DParam          pSpeed , pDensity, pSharp;
-       Pick            pChoose, pSymm;
-       int                     _ND = 4;
-       NDat            N[] = new NDat[_ND];
-
-       Noise(GLucose glucose) {
-               super(glucose);
+       int                             CurAnim, iSymm;
+       int                     XSym=1,YSym=2,RadSym=3;
+       float                   zTime , zTheta=0, zSin, zCos, rtime, ttime;
+       BasicParameter  pSpeed , pDensity, pSharp;
+       Pick                    pChoose, pSymm;
+       int                             _ND = 4;
+       NDat                    N[] = new NDat[_ND];
+
+       Noise(LX lx) {
+               super(lx);
                pSpeed          = addParam("Fast"       , .55);
                pDensity        = addParam("Dens"        , .5);
                pSharp          = addParam("Shrp"        ,  0);
@@ -67,13 +67,13 @@ public class Noise extends DPat
                for (int i=0; i<_ND; i++) N[i] = new NDat();
        }
 
-       void StartPattern() { zTime = random(500); zTheta=0; rtime = 0; ttime = 0; transAdd=0; }
+       void onActive() { zTime = random(500); zTheta=0; rtime = 0; ttime = 0; }
+
        void StartRun(double deltaMs) {
-               zTime   += deltaMs*(pSpeed.Val()-.5)*.002       ;
-               zTheta  += deltaMs*(pSpin .Val()-.5)*.01        ;
+               zTime   += deltaMs*(val(pSpeed)-.5)*.002        ;
+               zTheta  += deltaMs*(spin()-.5)*.01      ;
                rtime   += deltaMs;
                iSymm    = pSymm.Cur();
-               transAdd = 1*(1 - constrain(rtime - ttime,0,1000)/1000);
                zSin    = sin(zTheta);
                zCos    = cos(zTheta);
 
@@ -85,19 +85,19 @@ public class Noise extends DPat
                        
                        switch(CurAnim) {
                        //                          hue xz yz zz den mph angle
-                       case 0: N[0].set(0  ,75 ,75 ,150,45 ,3  ,0  ); pSharp.set(1 ); break;   // drip
-                       case 1: N[0].set(0  ,100,100,200,45 ,3  ,180); pSharp.set(0 ); break;   // clouds
-                       case 2: N[0].set(0  ,2  ,400,2  ,20 ,3  ,0  ); pSharp.set(.5); break;   // rain
+                       case 0: N[0].set(0  ,75 ,75 ,150,45 ,3  ,0  ); pSharp.setValue(1 ); break;      // drip
+                       case 1: N[0].set(0  ,100,100,200,45 ,3  ,180); pSharp.setValue(0 ); break;      // clouds
+                       case 2: N[0].set(0  ,2  ,400,2  ,20 ,3  ,0  ); pSharp.setValue(.5); break;      // rain
                        case 3: N[0].set(40 ,100,100,200,10 ,1  ,180); 
-                                       N[1].set(0  ,100,100,200,10 ,5  ,180); pSharp.set(0 ); break;   // fire 1
+                                       N[1].set(0  ,100,100,200,10 ,5  ,180); pSharp.setValue(0 ); break;      // fire 1
                        case 4: N[0].set(0  ,40 ,40 ,40 ,15 ,2.5,180);
                                        N[1].set(20 ,40 ,40 ,40 ,15 ,4  ,0  );
                                        N[2].set(40 ,40 ,40 ,40 ,15 ,2  ,90 );
-                                       N[3].set(60 ,40 ,40 ,40 ,15 ,3  ,-90); pSharp.set(.5); break; // machine
+                                       N[3].set(60 ,40 ,40 ,40 ,15 ,3  ,-90); pSharp.setValue(.5); break; // machine
                        case 5: N[0].set(0  ,400,100,2  ,15 ,3  ,90 );
                                        N[1].set(20 ,400,100,2  ,15 ,2.5,0  );
                                        N[2].set(40 ,100,100,2  ,15 ,2  ,180);
-                                       N[3].set(60 ,100,100,2  ,15 ,1.5,270); pSharp.set(.5); break; // spark
+                                       N[3].set(60 ,100,100,2  ,15 ,1.5,270); pSharp.setValue(.5); break; // spark
                        }
                }
                
@@ -107,32 +107,31 @@ public class Noise extends DPat
                }
        }
 
-       color CalcPoint(xyz P) {
+       color CalcPoint(PVector p) {
                color c = 0;
-               P.RotateZ(mCtr, zSin, zCos);
+               rotateZ(p, mCtr, zSin, zCos);
 
                if (CurAnim == 6 || CurAnim == 7) {
-                       P.setNorm();
+                       setNorm(p);
                        return lx.hsb(lxh(),100, 100 * (
-                                                       constrain(1-50*(1-pDensity.Val())*abs(P.y-sin(zTime*10  + P.x*(300))*.5 - .5),0,1) + 
-                       (CurAnim == 7 ? constrain(1-50*(1-pDensity.Val())*abs(P.x-sin(zTime*10  + P.y*(300))*.5 - .5),0,1) : 0))
+                                                       constrain(1-50*(1-val(pDensity))*abs(p.y-sin(zTime*10  + p.x*(300))*.5 - .5),0,1) + 
+                       (CurAnim == 7 ? constrain(1-50*(1-val(pDensity))*abs(p.x-sin(zTime*10  + p.y*(300))*.5 - .5),0,1) : 0))
                        );
                }                       
 
-               if (iSymm == XSym && P.x > mMax.x/2) P.x = mMax.x-P.x;
-               if (iSymm == YSym && P.y > mMax.y/2) P.y = mMax.y-P.y;
+               if (iSymm == XSym && p.x > mMax.x/2) p.x = mMax.x-p.x;
+               if (iSymm == YSym && p.y > mMax.y/2) p.y = mMax.y-p.y;
 
                for (int i=0;i<_ND; i++) if (N[i].Active()) {
                        NDat  n     = N[i];
                        float zx    = zTime * n.speed * n.sinAngle,
                                  zy    = zTime * n.speed * n.cosAngle;
 
-                       float b     = (iSymm==RadSym ? noise(zTime*n.speed+n.xoff-Dist(P,mCtr)/n.xz)
-                                                                                : noise(P.x/n.xz+zx+n.xoff,P.y/n.yz+zy+n.yoff,P.z/n.zz+n.zoff))
+                       float b     = (iSymm==RadSym ? noise(zTime*n.speed+n.xoff-p.dist(mCtr)/n.xz)
+                                                                                : noise(p.x/n.xz+zx+n.xoff,p.y/n.yz+zy+n.yoff,p.z/n.zz+n.zoff))
                                                        *1.8;
 
-                       b +=    n.den/100 -.4 + pDensity.Val() -1;
-                       b +=    transAdd;
+                       b +=    n.den/100 -.4 + val(pDensity) -1;
                        c =     blendColor(c,lx.hsb(lxh()+n.hue,100,c1c(b)),ADD);
                }
                return c;
@@ -158,28 +157,26 @@ public class Play extends DPat
                                                                        prvR    = dstR;         dstR    = random(mCtr.y);                                                                       }
        }
 
-       int             nBeats  =       0;
-       DParam  pAmp, pRadius, pBounce;
+       BasicParameter  pAmp, pRadius, pBounce;
+       Pick                    pTimePattern, pTempoMult, pShape;
 
-       float   t,amp,rad,bnc;
-       float   zTheta=0;
        ArrayList<rWave> waves = new ArrayList<rWave>(10);
 
-       rAngle  a1              = new rAngle(), a2              = new rAngle(),
-                       a3              = new rAngle(), a4              = new rAngle();
-       xyz             cPrev   = new xyz(), cRand              = new xyz(),
-                       cMid    = new xyz(), V                  = new xyz(),
-                       Theta   = new xyz(), TSin               = new xyz(),
-                       TCos    = new xyz(), cMidNorm   = new xyz(),
-                       Pn              = new xyz();
+       int             nBeats  =       0;
+       float   t,amp,rad,bnc,zTheta=0;
+
+       rAngle  a1              = new rAngle(), a2                      = new rAngle(),
+                       a3              = new rAngle(), a4                      = new rAngle();
+       PVector cPrev   = new PVector(), cRand          = new PVector(),
+                       cMid    = new PVector(), V                      = new PVector(),
+                       theta   = new PVector(), tSin           = new PVector(),
+                       tCos    = new PVector(), cMidNorm       = new PVector(),
+                       Pn              = new PVector();
        float   LastBeat=3, LastMeasure=3;
-       int             CurRandTempo = 1, CurRandTPat = 1;
-
-       Pick    pTimePattern, pTempoMult, pShape;
-       int             RandCube;
+       int             curRandTempo = 1, curRandTPat = 1;
 
-       Play(GLucose glucose) {
-               super(glucose);
+       Play(LX lx) {
+               super(lx);
            pRadius             = addParam("Rad"        , .1    );
                pBounce         = addParam("Bnc"        , .2    );
            pAmp                = addParam("Amp"        , .2    );
@@ -209,7 +206,11 @@ public class Play extends DPat
                }
        }
 
-       void StartPattern() { zTheta=0; }
+       void onReset()  { zTheta=0; super.onReset(); }
+       void onActive() { 
+               zTheta=0; 
+               while (lx.tempo.bpm() > 40) lx.tempo.setBpm(lx.tempo.bpm()/2);
+       }
 
        int KeyPressed = -1;
        boolean noteOn(Note note) {
@@ -220,22 +221,22 @@ public class Play extends DPat
 
        void StartRun(double deltaMs) {
                t       = lx.tempo.rampf();
-               amp = pAmp.Val();
-               rad     = pRadius.getValuef();
-               bnc     = pBounce.getValuef();          
-               zTheta  += deltaMs*(pSpin .Val()-.5)*.01;
+               amp = pAmp              .getValuef();
+               rad     = pRadius       .getValuef();
+               bnc     = pBounce       .getValuef();           
+               zTheta  += deltaMs*(val(pSpin)-.5)*.01;
 
-               Theta   .set(pRotX.Val()*PI*2, pRotY.Val()*PI*2, pRotZ.Val()*PI*2 + zTheta);
-               TSin    .set(sin(Theta.x), sin(Theta.y), sin(Theta.z));
-               TCos    .set(cos(Theta.x), cos(Theta.y), cos(Theta.z));
+               theta   .set(val(pRotX)*PI*2, val(pRotY)*PI*2, val(pRotZ)*PI*2 + zTheta);
+               tSin    .set(sin(theta.x), sin(theta.y), sin(theta.z));
+               tCos    .set(cos(theta.x), cos(theta.y), cos(theta.z));
 
                if (t<LastMeasure) {
-                       if (random(3) < 1) { CurRandTempo = int(random(4)); if (CurRandTempo == 3) CurRandTempo = int(random(4));       }
-                       if (random(3) < 1) { CurRandTPat  = pShape.Cur() > 6 ? 2+int(random(5)) : int(random(7));                                       }
+                       if (random(3) < 1) { curRandTempo = int(random(4)); if (curRandTempo == 3) curRandTempo = int(random(4));       }
+                       if (random(3) < 1) { curRandTPat  = pShape.Cur() > 6 ? 2+int(random(5)) : int(random(7));                                       }
                } LastMeasure = t;
                        
-               int nTempo = pTempoMult  .Cur(); if (nTempo == 5) nTempo = CurRandTempo;
-               int nTPat  = pTimePattern.Cur(); if (nTPat  == 7) nTPat  = CurRandTPat ;
+               int nTempo = pTempoMult  .Cur(); if (nTempo == 5) nTempo = curRandTempo;
+               int nTPat  = pTimePattern.Cur(); if (nTPat  == 7) nTPat  = curRandTPat ;
 
                switch (nTempo) {
                        case 0:         t = t;                                                          break;
@@ -261,7 +262,7 @@ public class Play extends DPat
                }
                
                if (t<LastBeat) {
-                       cPrev.set(cRand); cRand.setRand();
+                       cPrev.set(cRand); setRand(cRand);
                        a1.set(); a2.set(); a3.set(); a4.set();
                } LastBeat = t;
 
@@ -275,17 +276,17 @@ public class Play extends DPat
                        case 6:         t = .5*(1-cos(PI*t));                                   break;  // slide
                }
                
-               cMid.set                (cPrev);        cMid.interpolate        (t,cRand);
-               cMidNorm.set    (cMid);         cMidNorm.setNorm();
+               cMid.set                (cPrev);        interpolate(t,cMid,cRand);
+               cMidNorm.set    (cMid);         setNorm(cMidNorm);
                a1.move(); a2.move(); a3.move(); a4.move();
        }
 
-       color CalcPoint(xyz Px) {
-               if (Theta.x != 0) Px.RotateX(mCtr, TSin.x, TCos.x);
-               if (Theta.y != 0) Px.RotateY(mCtr, TSin.y, TCos.y);
-               if (Theta.z != 0) Px.RotateZ(mCtr, TSin.z, TCos.z);
+       color CalcPoint(PVector Px) {
+               if (theta.x != 0) rotateX(Px, mCtr, tSin.x, tCos.x);
+               if (theta.y != 0) rotateY(Px, mCtr, tSin.y, tCos.y);
+               if (theta.z != 0) rotateZ(Px, mCtr, tSin.z, tCos.z);
                
-               Pn.set(Px); Pn.setNorm();
+               Pn.set(Px); setNorm(Pn);
 
                float mp        = min(Pn.x, Pn.z);
                float yt        = map(t,0,1,.5-bnc/2,.5+bnc/2);
@@ -337,7 +338,7 @@ public class Play extends DPat
 
                case 11:
                                        Px.z=mCtr.z; cMid.z=mCtr.z;
-                                       return lx.hsb(lxh(),100,c1c(1 - CalcCone(Px,cMid,mCtr) * 0.02 > .5?1:0));                               // cone
+                                       return lx.hsb(lxh(),100,c1c(1 - calcCone(Px,cMid,mCtr) * 0.02 > .5?1:0));                               // cone
 
                case 12:        return lx.hsb(lxh() + noise(Pn.x,Pn.y,Pn.z + (NoiseMove+50000)/1000.)*200,
                                                85,c1c(Pn.y < noise(Pn.x + NoiseMove/2000.,Pn.z)*(1+amp)-amp/2.-.1 ? 1 : 0));   // noise
@@ -350,19 +351,11 @@ public class Play extends DPat
                default:        return lx.hsb(0,0,0);
                }
 
-               return lx.hsb(lxh(), 100, c1c(1 - V.distance(Pn)/rad));
+               return lx.hsb(lxh(), 100, c1c(1 - V.dist(Pn)/rad));
        }
 }
 //----------------------------------------------------------------------------------------------------------------------------------
-// 0 - TLB, L (b), BLB, B (l)          // Fwd , Down, Back, Up
-// 4 - TLF, F (l), BLF, L (f)          // Fwd , Down, Back, Up
-// 8 - TRF, R (f), BRF, F (r)          // Back, Down, Fwd , Up
-// 12- TRB, B (r), BRB, R (b)          // Back, Down, Fwd , Up
-// 1->7, 15->9
-
-int randDir() { return round(random(1))*2-1; }
-//----------------------------------------------------------------------------------------------------------------------------------
-boolean dDebug = true;
+boolean dDebug = false;
 class dCursor {
        dVertex vCur, vNext, vDest;
        float   destSpeed;
@@ -373,8 +366,8 @@ class dCursor {
 
        boolean isDone  ()                                                                      { return pos==posStop;                                                                           }
        boolean atDest  ()                                                                      { return vCur.s==vDest.s || 
-                                                                                                                                pointDist(vCur.getPoint(0), vDest.getPoint(0)) < 12 || 
-                                                                                                                                pointDist(vCur.getPoint(0), vDest.getPoint(15))< 12;}
+                                                                                                                                xyDist(vCur.getPoint(0), vDest.getPoint(0)) < 12 || 
+                                                                                                                                xyDist(vCur.getPoint(0), vDest.getPoint(15))< 12;}
        void    setCur  (dVertex _v, int _p)                            { p2=null; vCur=_v; pos=_p; pickNext();                                          }
        void    setCur  (dPixel  _p)                                            { setCur(_p.v, _p.pos);                                                                          }
        void    setNext (dVertex _v, int _p, int _s)            { vNext = _v; posNext = _p<<12; posStop = _s<<12;                        }
@@ -390,7 +383,7 @@ class dCursor {
                if (bRandEval) {
                        if (random(nTurns) < 1) setNext(v,p,s); return; }
                else {
-                       float d = pointDist(v.getPoint(15), vDest.getPoint(0));
+                       float d = xyDist(v.getPoint(15), vDest.getPoint(0));
                        if (d <  minDist)                                       { minDist=d; setNext(v,p,s); }
                        if (d == minDist && random(2)<1)        { minDist=d; setNext(v,p,s); }
                }
@@ -405,10 +398,12 @@ class dCursor {
        void    pickNext()      {
                bRandEval = random(.05+destSpeed) < .05; minDist=500; nTurns=0;
                evaluate(vCur.c0, 0, 16);       evaluate(vCur.c1, 0, 16);
+               evaluate(vCur.c2, 0, 16);       evaluate(vCur.c3, 0, 16);
                evalTurn(vCur.t0);                      evalTurn(vCur.t1);
+               evalTurn(vCur.t2);                      evalTurn(vCur.t3);
        }
 
-       Point   p1, p2; int i2;
+       LXPoint         p1, p2; int i2;
 
        int draw(int nAmount, SCPattern pat) {
                int nFrom       = (pos    ) >> 12;
@@ -444,34 +439,35 @@ class Worms extends SCPattern {
        private BasicParameter pSpawn     = new BasicParameter("DIR" ,  0);
        private BasicParameter pColor     = new BasicParameter("CLR" ,  .1);
 
-       int     zMidLat = 82;
+       float   zMidLat = 82.;
        float   nConfusion;
        private final Click moveChase = new Click(1000);
 
-       xyz     middle;
+       PVector middle;
        int     AnimNum() { return floor(pSpawn.getValuef()*(4-.01));   }
        float   randX() { return random(model.xMax-model.xMin)+model.xMin; }
        float   randY() { return random(model.yMax-model.yMin)+model.yMin; }
-       xyz     randEdge() { 
-               return random(2) < 1 ?  new xyz(random(2)<1 ? model.xMin:model.xMax, randY(), zMidLat)  :
-                                                               new xyz(randX(), random(2)<1 ? model.yMin:model.yMax, zMidLat)  ;
+       PVector randEdge() { 
+               return random(2) < 1 ?  new PVector(random(2)<1 ? model.xMin:model.xMax, randY(), zMidLat)      :
+                                                               new PVector(randX(), random(2)<1 ? model.yMin:model.yMax, zMidLat)      ;
        }
 
-       Worms(GLucose glucose) {
-               super(glucose); 
+       Worms(LX lx) {
+               super(lx); 
            addModulator(moveChase).start();
            addParameter(pBeat);    addParameter(pSpeed);
            addParameter(pBlur);    addParameter(pWorms);
            addParameter(pEQ);      addParameter(pConfusion);
                addParameter(pSpawn);   addParameter(pColor);
 
-           middle = new xyz(model.cx, model.cy, 71);
+           middle = new PVector(1.5*model.cx, 1.5*model.cy, 71);
                if (lattice == null) lattice = new dLattice();
                for (int i=0; i<numCursors; i++) { dCursor c = new dCursor(); reset(c); cur.add(c); }
                onParameterChanged(pEQ); setNewDest();
        }
 
        void onParameterChanged(LXParameter parameter) {
+               super.onParameterChanged(parameter);
                nConfusion = 1-pConfusion.getValuef();
                for (int i=0; i<numCursors; i++) {
                        if (parameter==pSpawn) reset(cur.get(i));
@@ -489,8 +485,8 @@ class Worms extends SCPattern {
 
                        case 1: c.clr = lx.hsb(getClr(),100,100);                               // top to bottom
                                        float xLin = randX();
-                                       c.setDest(lattice.getClosest(new xyz(xLin, 0         , zMidLat)).v, nConfusion);
-                                       c.setCur (lattice.getClosest(new xyz(xLin, model.yMax, zMidLat)));
+                                       c.setDest(lattice.getClosest(new PVector(xLin, 0         , zMidLat)).v, nConfusion);
+                                       c.setCur (lattice.getClosest(new PVector(xLin, model.yMax, zMidLat)));
                                        break;
 
                        case 2: c.clr = lx.hsb(getClr(),100,100); break;                // chase a point around
@@ -498,8 +494,8 @@ class Worms extends SCPattern {
                        case 3: boolean bLeft = random(2)<1;
                                        c.clr = lx.hsb(getClr()+random(120),100,100);                           // sideways
                                        float yLin = randX();
-                                       c.setDest(lattice.getClosest(new xyz(bLeft ? 0 : model.xMax,yLin,zMidLat)).v, nConfusion);
-                                       c.setCur (lattice.getClosest(new xyz(bLeft ? model.xMax : 0,yLin,zMidLat)));
+                                       c.setDest(lattice.getClosest(new PVector(bLeft ? 0 : model.xMax,yLin,zMidLat)).v, nConfusion);
+                                       c.setCur (lattice.getClosest(new PVector(bLeft ? model.xMax : 0,yLin,zMidLat)));
                                        break;
                }
                if (pBlur.getValuef() == 1 && random(2)<1) c.clr = lx.hsb(0,0,0);
@@ -507,7 +503,7 @@ class Worms extends SCPattern {
 
        void setNewDest() {
                if (AnimNum() != 2) return;
-               xyz dest = new xyz(randX(), randY(), zMidLat);
+               PVector dest = new PVector(randX(), randY(), zMidLat);
                for (int i=0; i<numCursors; i++) {
                        cur.get(i).setDest(lattice.getClosest(dest).v, nConfusion);
                        cur.get(i).clr = lx.hsb(getClr()+75,100,100);   // chase a point around