gistfile1.cpp

    
    // - DiffuseColor - Returns the Diffuse color for the specified material and light
    Vector DiffuseColor(Vector materialDiffuse, SceneLight light, Vector normal, Vector lightv)
    {
        float distance = lightv.Magnitude();
        float distanceTerm = 1.0f / (light.attenuationConstant + light.attenuationLinear * distance + light.attenuationQuadratic * distance * distance);
        return materialDiffuse * light.color * (normal.Dot(lightv)) * distanceTerm;
    }

    // - SpecularColor - Returns the Specular color for the specified material and light
    Vector SpecularColor(Vector materialSpecular, float materialShininess, SceneLight light, Vector viewRay, Vector reflect, Vector lightv)
    {
        float distance = lightv.Magnitude();
        float distanceTerm = 1.0f / (light.attenuationConstant + light.attenuationLinear * distance + light.attenuationQuadratic * distance * distance);
        return materialSpecular * light.color * pow((viewRay.Dot(reflect)), materialShininess) * distanceTerm;
    }