#version 330

in vec2 fragTexCoord;
in vec4 fragColor;

uniform vec2 resolution;
uniform vec2 mouse_pos;
uniform float ball_radius;
uniform vec2 polygon_points[6];
uniform float polygon_influence;

out vec4 finalColor;

float distanceToPolygon(vec2 point, vec2 polyPoints[6]) {
    float minDist = 100000.0;
    
    for (int i = 0; i < 6; i++) {
        int j = (i + 1) % 6;
        vec2 a = polyPoints[i];
        vec2 b = polyPoints[j];
        
        vec2 pa = point - a;
        vec2 ba = b - a;
        float h = clamp(dot(pa, ba) / dot(ba, ba), 0.0, 1.0);
        float dist = length(pa - ba * h);
        minDist = min(minDist, dist);
    }
    
    return minDist;
}

void main()
{
    vec2 pixel_pos = fragTexCoord * resolution;
    
    vec2 ball_pixel_pos = mouse_pos;
    float ball_dist = distance(pixel_pos, ball_pixel_pos);
    float ball_value = (ball_radius * ball_radius) / (ball_dist * ball_dist + 1.0);
    
    float poly_dist = distanceToPolygon(pixel_pos, polygon_points);
    float poly_value = polygon_influence / (poly_dist * poly_dist + 1.0);
    
    float total_value = ball_value + poly_value;
    
    if (total_value > 0.7) {
        finalColor = vec4(1.0, 1.0, 1.0, 1.0); // White
    } else {
        finalColor = vec4(0.0, 0.0, 0.0, 1.0); // Black
    }
}