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- Coordinates
- How to retrieve the components of the color?
- Pattern and PHP
- Drawing in Browser code
<WDPic variable>.PixelColor (Function) In french: <Variable WDPic>.PixelCouleur Identifies the color of a pixel contained in a variable of type WDPic.
MyWDPicImage is WDPic = "Test.gif"
// Identify the color of the pixel (15, 25)
// on MyWDPicImage
ResColor = MyWDPicImage.PixelColor(15, 25)
IMG_MyDrawing = MyWDPicImage
Syntax
<Result> = <WDPic image>.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, ...). <WDPic image>: WDPic variable Name of the WDPic variable to be used. Only the background layer will be handled. <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 <WDPic 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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