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GMImage.SetType

Sets the Image representation type.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
GraphicsMagick 2.0 Yes Yes Yes Yes Yes

MBS( "GMImage.SetType"; ImageRef; type )

Parameters

Parameter Description Example value
ImageRef The image reference number. 1
type UndefinedType = 0, BilevelType = 1, GrayscaleType = 2, GrayscaleMatteType = 3, PaletteType = 4, PaletteMatteType = 5, TrueColorType = 6, TrueColorMatteType = 7, ColorSeparationType = 8, ColorSeparationMatteType = 9, OptimizeType = 10 6

Result

Returns "OK" on success.

Description

Sets the Image representation type.
Changing the type from TrueColorType to GrayscaleType will convert a color picture to grayscale.

Examples

Change the picture to grayscale.

Let ( [
$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);
$Result = MBS("GMImage.SetType";$Image; 2);
$Result = MBS("GMImage.WriteToPNGContainer"; $Image);
$Error = MBS("GMImage.Destroy";$Image)
];
$Result)

Convert image to 1 bit TIFF:

# Load from container
$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);

# make black and white with threshold
$Result = MBS("GMImage.Threshold";$Image; 127);

# mark as monochrome image
$Result = MBS("GMImage.SetMonochrome";$Image; 1);

# set type to 1 for black/white
$Result = MBS("GMImage.SetType";$Image; 1);

# set to use TIFF for compression
$Result = MBS("GMImage.SetMagick";$Image; "TIFF");

# set to use CCITT 4 Fax compression
$Result = MBS("GMImage.SetCompressType";$Image; 4);

# and write to a file
$Result = MBS("GMImage.WriteToFile"; $Image; "/tmp/test.tif");

# cleanup
$Error = MBS("GMImage.Destroy";$Image)

Change picture to RGB:

MBS("GMImage.SetType"; $image; 6);

Replace white with transparent:

Set Variable [$BigImageRef; Value:MBS("GMImage.NewFromContainer"; Test::BigImage)]
# Set type to RGBA
Set Variable [$Result; Value:MBS("GMImage.SetType"; $BigImageRef; 7)]
# Replace white with transparent
Set Variable [$Result; Value:MBS("GMImage.ReplaceColor"; $BigImageRef; "white"; "transparent"; 10)]
# save as PNG
Set Field [Test::Result; MBS( "GMImage.WriteToPNGContainer"; $BigImageRef )]
Set Variable [$Error; Value:MBS("GMImage.Destroy";$BigImageRef)]

See also

Example Databases


GMImage.SetTileName   -   GMImage.SetVerbose

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Links
MBS FileMaker tutorial videos