Mask rendering modes for image display and bitmap renditions. More...

Detailed Description

Mask rendering modes define how masked pixels are represented on bitmap renditions of images. The traditional mode used by PixInsight has always been MaskMode::Multiply, which simply multiplies each pixel of a screen rendition by its mask image counterpart.

Since PixInsight version 1.5.5, an additional set of overlay mask rendering modes is available, providing more accurate representations in several user-selectable colors. A new replace mode has also been implemented to facilitate blinking comparisons between images and masks. The default mask rendering mode has been set to MaskMode::OverlayRed.

MaskMode::Replace	Replaces the image by the mask.
MaskMode::Multiply	Multiplies the image by the mask. This is the traditional mask rendering mode used by PixInsight before version 1.5.5.
MaskMode::OverlayRed	Represents mask-protected pixels as red pixels on screen renditions.
MaskMode::OverlayGreen	Represents mask-protected pixels as green pixels on screen renditions.
MaskMode::OverlayBlue	Represents mask-protected pixels as blue pixels on screen renditions.
MaskMode::OverlayYellow	Represents mask-protected pixels as yellow pixels (red+green) on screen renditions.
MaskMode::OverlayMagenta	Represents mask-protected pixels as magenta pixels (red+blue) on screen renditions.
MaskMode::OverlayCyan	Represents mask-protected pixels as cyan pixels (green+blue) on screen renditions.
MaskMode::OverlayOrange	Represents mask-protected pixels as orange pixels (red + 1/2*green) on screen renditions.
MaskMode::OverlayViolet	Represents mask-protected pixels as violet pixels (1/2*red + blue) on screen renditions.
MaskMode::Default	Identifies the default mask rendering mode used by the PixInsight core application. Currently this corresponds to MaskMode::OverlayRed.