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GMImage.InvertChannel

Inverts an image.

Parameters

Parameter	Description	Example
ImageRef	The image reference number.	1
Channel	Which channel to work with. Can be opacity, red, green or blue. The value rgb will apply effect to all three color channels.	"rgb"

Result

Returns OK or error.

Description

Examples

Invert image:

Set Variable [ $image ; Value: MBS( "GMImage.NewFromContainer"; Invert::Input ) ]
# each channel...
// Set Variable [ $r ; Value: MBS( "GMImage.InvertChannel"; $image; "red") ]
// Set Variable [ $r ; Value: MBS( "GMImage.InvertChannel"; $image) ]
// Set Variable [ $r ; Value: MBS( "GMImage.InvertChannel"; $image; "blue") ]
# all channels...
Set Variable [ $r ; Value: MBS( "GMImage.InvertChannel"; $image; "rgb") ]
Set Field [ Invert::Output ; MBS( "GMImage.WriteToPNGContainer"; $image; "output.png") ]
Set Variable [ $r ; Value: MBS( "GMImage.Release"; $image) ]

See also

• GMImage.BlurChannel
• GMImage.LevelChannel
• GMImage.MultiplyChannel
• GMImage.New
• GMImage.NewFromContainer
• GMImage.Release
• GMImage.WriteToPNGContainer

Example Databases

• GraphicsMagick/Invert

Blog Entries

• MBS FileMaker Plugin, version 8.4pr8

Release notes

• Version 8.4
  • Added GMImage.InvertChannel function.

Created 13th September 2018, last changed 11st November 2019

GMImage.Implode   -   GMImage.IsGray

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