//*BASIC VARIABLES*
int x;
int y;
int z =0;
int lastx=1;
int lasty=1;
int lastz=1;
int xPos;
int yPos;
int zPos;

//*COLOUR VARIABLES*
Float ColourR = (random(256));
Float ColourG = (random(256));
Float ColourB = (random(256));

//*CAMERA VARIABLES*
int mousey;
int mouseynow;
float xmag, ymag = 0;
float newXmag, newYmag = 0;
int cameramove= 0;
int camposz;
int tdmode=1;
int zoom =-30;
int xnew;
int ynew;
int znew;
int change;
int lastxnew;
int lastynew;
int lastznew;
int nlines=5000;
int drawmode=0;
int mousedrag;
class Line3D {  // class
  float x1,y1,z1,x2,y2,z2;  //float variables which are basically x, y, z, lastx, lasty, lastz.
  public Line3D(float x1, float y1, float z1, float x2, float y2, float z2) {
    this.x1=x1;  // all this is so the line knowz what variables it uses to draw the next line
    this.y1=y1;
    this.z1=z1;
    this.x2=x2;
    this.y2=y2;
    this.z2=z2;
  }
  void drawLine() {

//*VIEW MODE COMMANDS*
    if(keyPressed) {
     if(key == 'y'){    //Draw Mode
       drawmode=0;
 }
     if(key == 't'){    //Pan/Zoom Mode
       drawmode+=1;
 }
     if(key == 'o'){    //3D Mode
     z2=0;
     tdmode=0;
 }
     if(key == 'p'){    //2D Mode
     z2=100;
     tdmode=1;
   }
  }

    if(tdmode==1){
      z2=0;
    }else{
      z2=100;
    }
    line(x1,y1,z1,x2,y2,z2);  // draws the next line
  }
}
Line3D[] lines=new Line3D[nlines];  // uses the array to draw next line using variables contained in it








void mouseMoved() {

  //background(255);
  //cameramove+=1;
}



void setup() {
  size(1000,600, P3D);
//  background(255);
  frameRate(60);
}

void draw() {

//*ENVIRONMENT SETTINGS*
stroke(ColourR,ColourG,ColourB); //Line Colour Assignment
lights(); // lights up the 3d images/objects

//*BORDER SETTINGS*
  background(255);
  beginShape(QUADS);
    fill(ColourR,ColourG,ColourB);
    vertex(10, 10);
    vertex(990, 10);
    vertex(990, 0);
    vertex(10, 0);

    vertex(10,0);
    vertex(10,600);
    vertex(0,600);
    vertex(0,0);

    vertex(990,0);
    vertex(990,590);
    vertex(1000,590);
    vertex(1000,0);

    vertex(10, 590);
    vertex(1000, 590);
    vertex(1000, 600);
    vertex(10, 600);
 endShape(CLOSE);

  if(keyPressed){
    if(change==0){
      if(key == 'c' || key == 'C'){
        ColourR = (random(256));
        ColourG = (random(256));
        ColourB = (random(256));
        change=1;
    }
  }
  }else{
  change=0;
  }

//*ZOOM COMMAND*
  if(keyPressed) {
   if(key == 'z' || key == 'Z'){
     zoom++;
   }
   if(key == 'x' || key == 'X'){
     zoom--;
   }
  }


//*PAN COMMAND*
  if(drawmode>=1){
    translate(width/2, height/2, zoom);

    newXmag = mouseX/float(width) * TWO_PI;
    newYmag = mouseY/float(height) * TWO_PI;

    float diff = xmag-newXmag;
    if (abs(diff) >  0.01) { xmag -= diff/4.0; }

    diff = ymag-newYmag;
    if (abs(diff) >  0.01) { ymag -= diff/4.0; }

    rotateX(-ymag);
    rotateY(-xmag);
  }else
      translate(500, 300, 0);
  {
  }

 //*RESET COMMAND*
  if(keyPressed) {
    if(key == 'r' || key == 'R') {

      x = 0;
      y = 0;
      lastx = 0;
      lasty = 0;

      lastp=0;

    }
  }

//*MOVEMENT COMMANDS*
  if(keyPressed) {
    if(key == CODED) {
      if(keyCode == RIGHT) {
        x++;
        lastx++;
        myLine(lastx, lasty, lastz, x, y, z);  //changes the variables required for drawing a line
      }                                        // essentially allows us to create our line but does not actually "draw them
    }
    if(key == CODED) {
      if(keyCode == DOWN) {           //Movement Down
        y++;
        lasty++;
        myLine(lastx, lasty, lastz, x, y, z);
      }
    }
    if(key == CODED) {
      if(keyCode == LEFT) {          //Movement Left
        x--;
        lastx--;
        myLine(lastx, lasty, lastz, x, y, z);
      }
    }
    if(key == CODED) {
      if(keyCode == UP) {            //Movement Up
        y--;
        lasty--;
        myLine(lastx, lasty, lastz, x, y, z);
      }
    }
    if(key == 'd' || key == 'D') {   //Movement Down-Right
      x++;
      y++;
      lastx++;
      lasty++;
      myLine(lastx, lasty, lastz, x, y, z);
    }
    if(key == 'w'|| key == 'W') {    //Movement Up-Right
      x++;
      y--;
      lastx++;
      lasty--;
      myLine(lastx, lasty, lastz, x, y, z);
    }
    if(key == 's' || key == 'S') {    //Movement Down-Left
      x--;
      y++;
      lastx--;
      lasty++;
      myLine(lastx, lasty, lastz, x, y, z);
    }
    if(key == 'a' || key == 'A') {    //Movement Up-Left
      x--;
      y--;
      lastx--;
      lasty--;
      myLine(lastx, lasty, lastz, x, y, z);
    }
  }

  for(int i=0; i<nlines; i++){  //checks to see if lines have already been drawn
    if(lines[i]!=null)
      lines[i].drawLine();    // tells the line to begin drawing
  }
}
void update() {
}
int lastp=0;
void myLine(float x1, float y1, float z1, float x2, float y2, float z2) {  // gathers all variables for use with drawing the line
  //line(x1,y1,z1,x2,y2,z2);
  Line3D l= new Line3D(x1,y1,z1,x2,y2,z2);  //prepares a new line using new variables

  lines[ lastp]=l;
  lastp=lastp+1;
  if(lastp>=nlines)  //checks to see if too many lines have been drawn
    lastp=0;          // if too many lines begins to remove the earliest lines
}


//*JUNK CODE/NOTES*
//
//
//
//  _██_     _██_
//  (ಠ_ృ)   ¯\(º_o)/¯
// What else were you expecting?
//
//
//~ROSS WAS HERE