// BLOKS Studio Pointer Diagnostic

void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
    vec2 uv = fragCoord.xy / iResolution.xy;

    vec2 p = uv * 2.0 - 1.0;
    p.x *= uAspect;

    vec2 m = uPointer * 2.0 - 1.0;
    m.x *= uAspect;

    vec2 d = uPointerDelta * vec2(uAspect, 1.0);

    float distToPointer = length(p - m);

    vec3 bg = vec3(0.015, 0.02, 0.045);
    vec3 hoverColor = vec3(0.12, 0.55, 1.0);
    vec3 downColor = vec3(1.0, 0.18, 0.08);

    vec3 pointerColor = mix(hoverColor, downColor, uPointerDown);

    float glow = smoothstep(0.34, 0.0, distToPointer);
    float core = smoothstep(0.035, 0.0, distToPointer);

    float rings = sin(distToPointer * 55.0 - iTime * 7.0);
    rings = smoothstep(0.55, 1.0, rings * 0.5 + 0.5);
    rings *= smoothstep(0.34, 0.0, distToPointer);

    vec2 flow = p - d * 18.0 * exp(-distToPointer * 4.0);

    float gridX = sin((flow.x + iTime * 0.08) * 16.0);
    float gridY = sin((flow.y - iTime * 0.06) * 16.0);
    float grid = smoothstep(0.9, 1.0, abs(gridX * gridY));

    float clickBurst = uPointerDown * exp(-distToPointer * 8.0);

    vec3 col = bg;
    col += grid * vec3(0.08, 0.22, 0.8) * 0.25;
    col += glow * pointerColor * 0.65;
    col += rings * pointerColor * 0.4;
    col += core * vec3(1.0);
    col += clickBurst * vec3(0.5, 0.85, 1.0);

    fragColor = vec4(pow(col, vec3(0.9)), 1.0);
}