StandardizedDiffuseAlbedoMaps.ReferenceImagePanel.UpdateBitmap C# (CSharp) Method

        public void UpdateBitmap()
        {
            if ( m_Bitmap == null )
                return;

            int		W = m_Bitmap.Width;
            int		H = m_Bitmap.Height;

            using ( Graphics G = Graphics.FromImage( m_Bitmap ) )
            {
                using ( SolidBrush B = new SolidBrush( Color.Black ) )
                    G.FillRectangle( B, 0, 0, W, H );

                if ( m_CameraCalibration != null && m_Thumbnail != null )
                {
                    // Draw thumbnail
                    RectangleF	ClientRect = ImageClientRect();
                    G.DrawImage( m_Thumbnail, ClientRect, new RectangleF( 0, 0, m_Thumbnail.Width, m_Thumbnail.Height ), GraphicsUnit.Pixel );

                    // Draw probe measurement circles if available
                    for ( int ProbeIndex=0; ProbeIndex < 6; ProbeIndex++ )
                    {
                        CameraCalibration.Probe	P = m_CameraCalibration.m_Reflectances[ProbeIndex];
                        if ( !P.m_MeasurementDiscIsAvailable )
                            continue;

                        PointF	ClientPos = ImageUV2Client( new PointF( P.m_MeasurementCenterX, P.m_MeasurementCenterY ) );
                        float	ClientRadius = ClientRect.Width * P.m_MeasurementRadius;

            //						G.DrawEllipse( m_PenProbeShadow, ClientPos.X - ClientRadius, ClientPos.Y - ClientRadius, 2*ClientRadius, 2*ClientRadius );
                        G.DrawEllipse( P.m_IsAvailable ? m_PenProbe : m_PenProbeInvalid, ClientPos.X - ClientRadius, ClientPos.Y - ClientRadius, 2*ClientRadius, 2*ClientRadius );
                    }
                }
            }

            Invalidate();
        }