- About Graphics Mill
- What's New?
- Breaking Changes in Graphics Mill 12
- Breaking Changes in Graphics Mill 11
- Features
- Supported File Formats
- System Requirements
- Getting Started
- Working with Image Formats
- Transforming Images (Resize, Rotate, Crop)
- Working with Metadata
- Color Management and Color Reduction
- Drawing Text and Graphics
- Color Keying (Green Screen Removal)
- Channels and Pixel Data
- Color and Tone Correction
- Working with Photoshop (PSD) Files
- Image Filters
- Processing Large Images
- Basics of Image Processing
- Troubleshooting
- Class Library Reference
- Aurigma.GraphicsMill Namespace
- Aurigma.GraphicsMill.Codecs Namespace
- Aurigma.GraphicsMill.Codecs.ClippingPath Namespace
- Aurigma.GraphicsMill.Codecs.Psd Namespace
- Aurigma.GraphicsMill.Drawing Namespace
- ArtTextFrame Class
- AutoSizeAnchor Enumeration
- AutoSizeMode Enumeration
- BeginDrawEventArgs Class
- BoundedText Class
- Brush Class
- CharInfo Class
- CharStyle Class
- ClippingPathCollection Class
- ColorStop Class
- ContainerItem Class
- ContainerItemCollection Class
- CopyfittingMode Enumeration
- CustomFontRegistry Class
- DigitType Enumeration
- DoublePathText Class
- DoublePathTextFrame Class
- Drawer Class
- DrawEventArgs Class
- EndDrawEventArgs Class
- FallbackFontCollection Class
- FamilyStyleCollisionPolicy Enumeration
- FillingRule Enumeration
- FirstBaselineOffset Enumeration
- Font Class
- FontAddResult Class
- FontAddStatus Enumeration
- FontFallbackException Class
- FontInfo Class
- FontMetrics Class
- FontMissingEventArgs Class
- FontRegistry Class
- GradientBrush Class
- Graphics Class
- GraphicsContainer Class
- ImageItem Class
- IndexedColorCollection Class
- InstalledFontRegistry Class
- InvalidStyleValueException Class
- Item Class
- Layer Class
- LinearGradientBrush Class
- LineCap Enumeration
- LineJoin Enumeration
- MainPath Enumeration
- OpenTypeFeature Structure
- OpenTypeFeatureTag Enumeration
- ParagraphStyle Class
- Path Class
- PathBoundedText Class
- PathPoint Structure
- PathPointCollection Class
- PathPointType Enumeration
- PathText Class
- PathTextAlignment Enumeration
- PathTextFrame Class
- Pen Class
- PlainText Class
- PointTextFrame Class
- PostscriptNameCollisionPolicy Enumeration
- RadialGradientBrush Class
- ShapeItem Class
- ShapeTextFrame Class
- SoftMask Class
- SoftMaskMethod Enumeration
- SolidBrush Class
- StringMeasure Structure
- Text Class
- TextAlignment Enumeration
- TextDirection Enumeration
- TextException Class
- TextFrame Class
- TextItem Class
- TextOrientation Enumeration
- TilingBrush Class
- UnknownStyleNameException Class
- UnknownTagException Class
- VerticalAlignment Enumeration
- Aurigma.GraphicsMill.Drawing.Art Namespace
- Aurigma.GraphicsMill.Drawing.Effects Namespace
- Aurigma.GraphicsMill.Licensing Namespace
- Aurigma.GraphicsMill.Templates Namespace
- Aurigma.GraphicsMill.Transforms Namespace
- Licensing
- End User License Agreement
- Copyright Notices
SoftMask.Backdrop Property
Gets or sets the backdrop luminosity of the mask.
Namespace:
Aurigma.GraphicsMill.Drawing
Assembly:
Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
Syntax
C#
public Nullable<double> Backdrop { get; set; }Property Value
A value from 0 to 1, ornull to use the default backdrop (black).Remarks
The backdrop is used for the Luminosity method only. In PDF it corresponds to the /BC entry of the soft mask dictionary.
Exceptions
| Exception | Condition |
|---|---|
| System.ArgumentOutOfRangeException | The value is less than 0 or greater than 1. |