Create a new zone within the image
Coordinates are inclusive, meaning pixels in the top and bottom rows and the left and right columns belong to the zone. Minimum width and height of the zone are 2 pixels.
Sub ImageMethods() Dim Ci As New CiServer Dim image As CiImage: Set image = Ci.CreateImage ' Initialize 3000 pixels * 2000 pixels RGB image. All pixels of new RGB image are black. Default resolution is 1 dpi image.CreateBpp 3000, 2000, 24 ' Set DPI to 200 image.HorzDpi = 200: image.VertDpi = 200 ' Crop area of the image image.Crop 100, 200, 800, 1000 ' Initialize 8.5" by 11" bi-tonal image. All pixels of new Bi-tonal image are white. Default resolution is 300 dpi ' Image initialization closes and frees memory of the previously crated RGB image image.Create 8.5 * 300, 11 * 300 ' Convert to grayscale image.ToGrayscale ' Create zone in the center of the image Dim zoneCenter As CiImage Set zoneCenter = image.CreateZone(image.Width / 3, image.Height / 3, _ image.Width * 2 / 3, image.Height * 2 / 3) ' Invert center area of the image zoneCenter.Invert ' Re-define zone to upper left quadrant of the image Dim rect As CiRect: Set rect = Ci.CreateRect rect.Left = 0: rect.Right = image.Width / 2 rect.Top = 0: rect.bottom = image.Height / 2 Dim zoneCorner As CiImage Set zoneCorner = image.CreateZoneRect(rect) ' Clear corner area on the image zoneCorner.Clear ' Duplicate center area to a new image Dim imageCenter As CiImage Set imageCenter = zoneCenter.Duplicate ' Copy from the original image Dim imageCopy As CiImage: Set imageCopy = Ci.CreateImage imageCopy.Copy image ' Convert image to bi-tonal imageCopy.ToBitonal ' Clean-up. Free image memory image.Close imageCenter.Close imageCopy.Close End Sub
CiImage Object | CiImage Members | CreateZone | CreateZoneRect | IsZone | Zone | Parent