shadertoy-distance

shadertoy-distance.glsl

void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
    // Normalized pixel coordinates (from 0 to 1)
    vec2 res = vec2(10.0, 10.0);
    vec2 uv = fragCoord/res.xy;
    vec2 uvMouse = iMouse.xy/res.xy;
    
    // Calculate distance
    float uvMouseDistX = uvMouse.x - uv.x;
    float uvMouseDistY = uvMouse.y - uv.y;
    float uvMouseDist = sqrt(uvMouseDistX * uvMouseDistX + uvMouseDistY * uvMouseDistY);
    
    fragColor = 1.0 / vec4(uvMouseDist) * cos(iTime * 5.0) * 0.5;
}