Axiom.RenderSystems.DirectX9.D3DRenderSystem.SetD3D9Light C# (CSharp) Метод

        private void SetD3D9Light( int index, Light light )
        {
            if ( light == null )
            {
                ActiveD3D9Device.EnableLight( index, false );
            }
            else
            {
                var nlight = new D3D.Light();

                switch ( light.Type )
                {
                    case LightType.Point:
                        nlight.Type = D3D.LightType.Point;
                        break;

                    case LightType.Directional:
                        nlight.Type = D3D.LightType.Directional;
                        break;

                    case LightType.Spotlight:
                        nlight.Type = D3D.LightType.Spot;
                        nlight.Falloff = light.SpotlightFalloff;
                        nlight.Theta = Utility.DegreesToRadians( light.SpotlightInnerAngle );
                        nlight.Phi = Utility.DegreesToRadians( light.SpotlightOuterAngle );
                        break;
                } // switch

                // light colors
                nlight.Diffuse = D3DHelper.ToColor( light.Diffuse );

                nlight.Specular = D3DHelper.ToColor( light.Specular );

                Vector3 vec;

                if ( light.Type != LightType.Directional )
                {
                    vec = light.DerivedPosition;
                    nlight.Position = new DX.Vector3( vec.x, vec.y, vec.z );
                }

                if ( light.Type != LightType.Point )
                {
                    vec = light.DerivedDirection;
                    nlight.Direction = new DX.Vector3( vec.x, vec.y, vec.z );
                }

                // atenuation settings
                nlight.Range = light.AttenuationRange;
                nlight.Attenuation0 = light.AttenuationConstant;
                nlight.Attenuation1 = light.AttenuationLinear;
                nlight.Attenuation2 = light.AttenuationQuadratic;

                ActiveD3D9Device.SetLight( index, nlight );
                ActiveD3D9Device.EnableLight( index, true );
            } // if
        }