random colour triangle grid with cut out triangle.pde

float radius = 28*4;
float x, y, xt = 16, xto = xt, yt = 6, xt2 = xt+20, xto2 = xt2;
//float xt3 = 0, xto3 = xt3, yt3 = bottomCutOff-6; 
float rightTriangleSideSaver = 0;
float rightTriangleSideSaver2 = 0;
float rightTriangleSideSaver3 = 0;
float topCutOff = yt;
int bottomCutOff = 35;

void setup()
{
  size( 4000, 4000 );
  fill(42, 42, 42);

  background(201, 206, 189);
  
  noStroke();

  x = -radius;
  y = -(radius*sin(TWO_PI+((TWO_PI/6)*2)));
  noLoop();
}

void draw()
{  
  for (int i = 0; i < (width/radius)+radius*2; i++) {

    for (int j = 0; j < (width/radius)+radius*2; j++) {

      int coin2 = int(random(1, 5));
      if (coin2 == 0) {
        fill(201, 206, 189);
      } else if (coin2 == 1) {
        fill(178, 188, 170);
      } else if (coin2 == 2) {
        fill(131, 142, 131);
      } else if (coin2 == 4) {
        fill(108, 96, 97);
      } else {
        fill(100, 64, 62);
      }

      // top and bottom cut off
      if (i < topCutOff) {
        fill(201, 206, 189);
      } else if (i > bottomCutOff) {
        fill(201, 206, 189);
      }


      // makes the diagonal downwards and right line of the triangle
      if (x > radius*xt && i >= yt && i <= bottomCutOff) {
        fill(201, 206, 189);
        //    fill(0,0,0);    
        if (j%2==0) {
          xt++;
        }     
        rightTriangleSideSaver = xt;
      }

/*      // bottom left corner cut off
      if (x > radius*xt3 && i >= yt3 && i <= bottomCutOff) {
        fill(201, 206, 189);
        //    fill(0,0,0);    
        if (j%2==0) {
          xt3++;
        }     
        rightTriangleSideSaver3 = xt3;
      }*/
      

      // makes the diagonal downwards and left line of the triangle
      if (x < radius*xt2 && i >= yt && i <= bottomCutOff) {
        fill(201, 206, 189);
        //   fill(0,0,0);    
        if (j%2==0) {
          xt2--;
        }     
        rightTriangleSideSaver2 = xt2;
      }


      if (j%2==0) {

        beginShape();
        vertex(x, y);
        vertex(x+radius*cos(TWO_PI), y+radius*sin(TWO_PI));
        vertex(x+radius*cos(TWO_PI+(TWO_PI/6)), y+radius*sin(TWO_PI+(TWO_PI/6)));
        endShape();
        x += radius;
      } else {

        //makes the right side a straight line 
        if (xt == rightTriangleSideSaver && xt == xto && i <= bottomCutOff) {
          coin2 = int(random(1, 5));
          if (coin2 == 0) {
            fill(201, 206, 189);
          } else if (coin2 == 1) {
            fill(178, 188, 170);
          } else if (coin2 == 2) {
            fill(131, 142, 131);
          } else if (coin2 == 4) {
            fill(108, 96, 97);
          } else {
            fill(100, 64, 62);
          }
        }

        beginShape();
        vertex(x, y);
        vertex(x+(radius*cos(TWO_PI+(TWO_PI/6))), y+(radius*sin(TWO_PI+(TWO_PI/6))));
        vertex(x+(radius*cos(TWO_PI+(TWO_PI/3))), y+(radius*sin(TWO_PI+(TWO_PI/3))));
        endShape();
      }
    }

    y = y+radius*sin(TWO_PI+((TWO_PI/6)*2));

    //seems to make the diagonal cut off happen at the right angle
    if (i%2==0) {
      xto++;
    }

    xto2--;
    // makes the xt value come back down to the right value for the next line
    xt = xto;
    xt2=xto2;

    if (i % 2 == 0) {
      x = -(radius/2);
    } else {
      x = -radius;
    }
  }

  save("triangles.png");
}