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#version 330 core
#define PI 3.14159265359
uniform vec2 resolution;
uniform vec2 mouse;
uniform float time;
out vec4 color;
float
plot (vec2 st, float pct)
{
return
smoothstep (pct - 0.02, pct, st.y) -
smoothstep (pct, pct + 0.02, st.y);
}
void
main ()
{
vec2 st = gl_FragCoord.xy/resolution;
vec2 mt = mouse/resolution;
float x = st.x;
float y;
y = pow (x, PI);
// y = exp (x - 1);
// y = log (x + 1);
// y = sqrt (x);
// y = step (mt.x, x);
// y = smoothstep (mt.x, 1 - mt.x, x);
// y =
// smoothstep (.2, .5, x) -
// smoothstep (.5, .8, x);
// y = (sin (2*PI*x + time) + 1)/2;
// y = (cos (2*PI*x + time) + 1)/2;
// y = mod (x, 1./4)*4;
// y = fract (x*4);
// y = ceil (x*4)/4;
// y = floor (x*4)/4;
// y = sign (x - 0.5);
// y = abs (x - 1./2)*2;
// y = (clamp (x, 1./4, 3./4) - 1./4)*2;
// y = min (1./2, x)*2;
// y = (max (.5, x) - 1./2)*2;
vec3 c = vec3 (y);
float pct = plot (st, y);
c = (1 - pct)*c + pct*vec3 (0, 1, 0);
color = vec4 (c, 1);
}
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