feat: ball following mouse and blending with static polygon

resources/shaders/basic.fs

@@ -0,0 +1,50 @@
+#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
+    }
+}