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GMImage.GetPixelColor

get pixel color at location x & y.

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

MBS( "GMImage.GetPixelColor"; ImageRef; x; y )

Parameters

Parameter Description Example value
ImageRef The image reference number. 1
x The horizontal position. Range from 0 to GMImage.GetWidth-1. 0
y The vertical position. Range from 0 to GMImage.GetHeight-1. 0

Result

Returns a color value as string.

Description

get pixel color at location x & y.

Examples

Open picture and read first pixel:

SetzeVar ( [

$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);
$colorValue = MBS("GMImage.GetPixelColor"; $Image; 0; 0);
$Error = MBS("GMImage.Destroy";$Image)
];

$colorValue )

Trims space around image and make transparent:

Set Variable [$BigImageRef; Value:MBS("GMImage.NewFromContainer"; Test::BigImage)]
Set Variable [$Result; Value:MBS( "GMImage.SetBackgroundColor"; $BigImageRef; "RGB 1 0 0" )]
Set Variable [$Result; Value:MBS("GMImage.Trim"; $BigImageRef)]
Set Variable [$Result; Value:MBS( "GMImage.SetColorFuzz"; $BigImageRef; 5 )]
Set Variable [$Result; Value:MBS( "GMImage.SetMatte"; $BigImageRef; 1 )]
Set Variable [$farbe; Value:MBS( "GMImage.GetPixelColor"; $BigImageRef; 0; 0 )]
Set Variable [$Result; Value:MBS( "GMImage.ReplaceColor"; $BigImageRef; $farbe; "RGB 1 1 1 1"; 5)]
Set Field [Test::Result; MBS( "GMImage.WriteToPNGContainer"; $BigImageRef )]
Set Variable [$Error; Value:MBS("GMImage.Destroy";$BigImageRef)]

See also

Example Databases


GMImage.GetPage   -   GMImage.GetQuality

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