Tmpl8::Color Tmpl8::Core::SetShading( const vector3& a_WorldPos, const vector3& a_Normal, const vector2& a_UV, int a_ShadingType )
{
Color tempcol;
vector3 light = SceneManager::Get()->GetScene()->GetInsetCamera()->GetMatrixInv().Transform(vector3(100, 100, -1000));
Color diffuse = Color(0.8f, 0.8f, 0.8f);
Color specular = Color(0.8f, 0.8f, 0.8f);
Color ambient = Color(0.2f, 0.2f, 0.2f);
vector3 position = SceneManager::Get()->GetScene()->GetInsetCamera()->GetPosition();
if(a_ShadingType == 1)
{
Color texcol = m_Texture ? tempcol.FromPixel(GetUVColor(a_UV.u, a_UV.v)) : GetColor();
vector3 L = (light - a_WorldPos).Normalized();
vector3 N = a_Normal;
N.Normalize();
vector3 V = position - a_WorldPos;
float dst = 1.0f / DOT(V, V);
vector3 H = (L + V).Normalized();
float diff = 0.25f * DOT(N, L);
float spec = 0.8f * powf(DOT(N, H), 32);
Color tmpcol;
tmpcol += diff * (diffuse * texcol);
tmpcol += spec * (specular * texcol);
tmpcol += ambient * texcol;
return tmpcol;
}
else if(a_ShadingType == 2)
{
Color texcol = m_Texture ? tempcol.FromPixel(GetUVColor(a_UV.u, a_UV.v)) : GetColor();
vector3 L = (light - a_WorldPos).Normalized();
vector3 N = a_Normal;
N.Normalize();
vector3 V = position - a_WorldPos;
float dst = 1.0f / DOT(V, V);
float diff = DOT(N, L);
diff = CLAMP(diff, 0.01f, 1.0f);
Color tmpcol;
tmpcol += diff * (diffuse * texcol);
tmpcol += ambient * texcol;
return tmpcol;
}
}
