//uniform vec2 resolution

void main() {
  //coordinate systems
  vec2 r = vec2((gl_FragCoord.xy - 0.5*resolution.xy)/resolution.y) * 2.0; // Is [-1, 1] coordinate system
  vec2 p = vec2(gl_FragCoord.xy/resolution.xy); //[0,1] coordinate system

  //Set background color
  vec3 bgCol = vec3(0.0); // black
  vec3 pixel = bgCol;

  vec3 rAxesColor = vec3(0.537, 1.0, 0.364);
  float rAxesThickness = 0.006;

  vec3 pAxesColor = vec3(1.0, 0.412, 0.635);
  float pAxesThickness = 0.008;

  // --------------------------------------
  // --------------------------------------
  // -------- Start Fancy Code ------------
  // --------   "Code Here"   -------------
  // -------- End Fancy Code---------------
  // --------------------------------------
  // --------------------------------------

  //[0,1] coordinat system axes
  if(abs(p.x) < pAxesThickness) pixel = pAxesColor;
  if(abs(p.y) < pAxesThickness) pixel = pAxesColor;

  //[-1,1] coordinat system axes
  if(abs(r.x) < rAxesThickness) pixel = rAxesColor;
  if(abs(r.y) < rAxesThickness) pixel = rAxesColor;

  //Final output
  gl_FragColor = vec4(pixel, 1.0);
}