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- Coordinates
- How to retrieve the components of the color?
- Drawing in PHP
- Drawing in Browser code
<Image variable>.PixelColor (Function) In french: <Variable Image>.PixelCouleur Identifies the color of a pixel contained in a variable of type Image. MyImage is Image = "Test.gif"
// Identify the color of the pixel (15, 25)
// on MyImage
ResColor = MyImage.PixelColor(15, 25)
IMG_MyDrawing = MyImage
Syntax
<Result> = <Image variable>.PixelColor(<X-coordinate> , <Y-coordinate>)
<Result>: Integer Color of the specified pixel in RGB format.
Caution: the value returned may differ according to the display configuration (resolution, ...). <Image variable>: Image variable Name of the Image variable to be used. <X-coordinate>: Integer Horizontal position of pixel to use. <Y-coordinate>: Integer Vertical position of pixel to use. Remarks Coordinates Coordinates are given in pixels with respect to the upper-left corner of the image (coordinates: (0.0)). How to retrieve the components of the color? To retrieve the components of the color returned by <Image variable>.PixelColor: - To get the red component, use RGBRed (or perform a division modulo 256 of <Result>),
- To get the green component, use RGBGreen (or perform a division modulo 256 of <Result>/256),
- To get the blue component, use RGBBlue (or perform a division modulo 256 of <Result>/256/256).
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