import processing.opengl.*;
import anar.*;
 
 
 
 
 
 
 
 
Obj myObj = new Obj();
 
void setup(){
    size(800,400,OPENGL);
Anar.init(this);
Anar.drawAxis();
initForm();
}
 
void initForm(){
 
int n = 6; // number of elements in X
int m = 6; // number of elements in Y
 
Param axonometric = new Param(0,0,50);
TranslateZ tz = new TranslateZ(axonometric);
 
Obj grid = createGrid(n,m);
myObj.add(grid);
 
Obj ctrlX = createCtrlInX(n,m,grid);
ctrlX.apply(tz);
myObj.add(ctrlX);
 
Obj curvesX = ptsSetToCurves(ctrlX,50);
curvesX.apply(tz);
curvesX.apply(tz);
myObj.add(curvesX);
 
Obj ctrlY = createCtrlInY(curvesX,50);
ctrlY.apply(tz);
ctrlY.apply(tz);
ctrlY.apply(tz);
myObj.add(ctrlY);
 
Obj curvesY = ptsSetToCurves(ctrlY,50);
curvesY.apply(tz);
curvesY.apply(tz);
curvesY.apply(tz);
curvesY.apply(tz);
myObj.add(curvesY);
 
 
Obj faces = createFacesFromAGrid(curvesY);
faces.apply(tz);
faces.apply(tz);
faces.apply(tz);
faces.apply(tz);  
faces.apply(tz); 
myObj.add(faces);
 
// Anar.sliders(myObj)
Anar.sliders(tz);
Anar.camTarget(myObj);
}
 
 
 
Obj createGrid(int n, int m){
Obj output = new Obj();
 
for (int i = 0; i<n; i++)
  for (int j = 0; j<m; j++){
    // Create a list of point
    // This is our Vertical lines
    Pts vertical = new Pts();
 
    // Create a first point on the floor
    Pt ori = Anar.Pt(i*30,j*60);
    vertical.add(ori);
 
    // Derive a second point from the previous position
    TranslateZ tz = new TranslateZ(random(50)+30);
    if( (i*n+j)%12==0)
      Anar.sliders(tz);
 
    Pt up = Anar.Pt(ori,tz);
    vertical.add(up);
 
    // Store the lines in our output
    output.add(vertical);
  }
 
return output;
}
 
 
Obj createCtrlInX(int n, int m, Obj grid){
// Link the upper points together
Obj allCtrlLineX = new Obj();
 
for (int i = 0; i<n; i++){
  Pts ctrlLineX = new Pts();
  for (int j = 0; j<m; j++)
    ctrlLineX.add(grid.line(i+ (j*n)).pt(1));
 
  ctrlLineX.stroke(155,0,0);
  allCtrlLineX.add(ctrlLineX);
}
 
return allCtrlLineX;
}
 
 
Obj ptsSetToCurves(Obj ctrlX, int nPts){
// Link the upper points together
Obj curves = new Obj();
 
for (int i = 0; i<ctrlX.numOfLines(); i++)
  curves.add(createCurve(ctrlX.line(i),nPts));
 
return curves;
}
 
 
 
Pts createCurve(Pts construction, int nPts){
 
// From this first set of points, create a curve of degree 4
CSpline curve = new CSpline(construction,4);
 
// Extract a serie of points from the curve
Pts curveWithPointsUniform = curve.getPts(nPts);
curveWithPointsUniform.stroke(155,155,255);
 
return curveWithPointsUniform;
}
 
 
Obj createCtrlInY(Obj grid, int nPts){
// Link the upper points together
Obj allCtrlLineY = new Obj();
 
for (int i = 0; i<grid.line(0).numOfPts(); i++){
  Pts ctrlLineY = new Pts();
  for (int j = 0; j<grid.numOfLines(); j++)
    ctrlLineY.add(grid.line(j).pt(i));
 
  ctrlLineY.stroke(200,0,0);
  allCtrlLineY.add(ctrlLineY);
}
 
return allCtrlLineY;
}
 
 
Obj createFacesFromAGrid(Obj grid){
Obj output = new Obj();
 
for (int i = 1; i<grid.numOfLines(); i++)
  for (int j = 1; j<grid.line(i).numOfPts(); j++)
  {
    Face f = new Face();
 
    f.add(grid.line(i-1).pt(j-1));
    f.add(grid.line(i-1).pt(j));
    f.add(grid.line(i).pt(j));
    f.add(grid.line(i).pt(j-1));
 
    output.add(f);
  }
 
 
return output;
}
 
 
void draw(){
background(155);
myObj.draw();
}