ImageGear for .NET
CGM
| ImageGear for .NET User Guide > ImageGear Imaging Formats Reference > ImageGear Supported File Formats Reference > CGM |
| Full Name | Computer Graphics Metafile |
| Format ID | ImGearFormats.CGM |
| File Extension(s) | *.cgm |
| Data Type | Metafile Vector Image |
| Data Encoding | Character-based, Binary, Clear-text encoded |
| IG Multipage Support | Yes |
| IG Alpha Channel Support | No |
| IG Metadata Update Support | No |
| IG Platforms Support | Win32, Win64, .NET, .NET64 |
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CGM format requires ImageGear.Formats.CGM Namespace. |
| Filter Control Parameter | Type | Default Value | Available Values | Description |
| Width | Long | 512 | Any positive value | Defines the DIB width of the loaded image. The DIB height is calculated using the file's scale factors. |
This is standardized, platform-independent format used for the interchange of bitmap and vector data.
CGM is a very feature-rich format which attempts to support the graphic needs of many general fields (graphic arts, technical illustration, cartography, visualization, electronic publishing, and so on). While the CGM format is rich in features (many graphical primitives and attributes), it is less complex than PostScript, produces much smaller (more compact) files, and allows the interchange of very sophisticated and artistic images.
Computer Graphics Metafile was developed by experts working on committees under the auspices of the International Standards Organization (ISO) and the American Standards National Institute (ANSI). It was specifically designed as a common format for the platform-independent interchange of bitmap and vector data, and for use in conjunction with a variety of input and output devices. Although CGM incorporates extensions designed to support bitmap (called raster in the CGM specification) data storage, files in CGM format are used primarily to store vector information. CGM files typically contain either bitmap or vector data, but rarely both.