vec3 blinnPhong()

in src/elm_src/Algorithm/fractals.c [538:549]

• 9 lines of code
• 1 McCabe index (conditional complexity)

vec3 blinnPhong(vec3 color, vec3 p, vec3 n)
{
    // Ambient colour based on background gradient
    vec3 ambColor = clamp(mix(background2Color, background1Color, (sin(n.y * HALFPI) + 1.0) * 0.5), 0.0, 1.0);
    ambColor = mix(vec3(ambientColor.x), ambColor, ambientColor.y);

    vec3  halfLV = normalize(light - p);
    float diffuse = max(dot(n, halfLV), 0.0);
    float specular = pow(diffuse, specularExponent);

    return ambColor * color + color * diffuse + specular * specularity;
}