Re: ? How to get the pixel color without relying on mouseColor
On Sun, 2003-08-10 at 14:02, Sparticus Zarris wrote: > Please, don't tell me to write a function like this: > > function convolutedGetPixelColor aPoint > set the screenMouseLoc to aPoint > get the mouseColor > > return it > > end convolutedGetPixelColor Oh go on - let me :) Not done it - but thought that you'd need to use a combination of... using the imagedata property and working out the dimensions of the image (the tricky bit). You can get the original dimensions of the image using the formattedHeight/Width and there is also some feature I could not find in the MC documentation which returns the dimensions of the data returned by the imagedata. function convolutedGetPixelColor apoint, imageName -- something like this ??? put the imageData of image imageName into someImageData put the formattedWidth of image imageName into oWidth -- put the formattedHeight of image imageName into oHeight put (item 1 of apoint) * 8 into endChar put endChar - 8 into startChar put item 2 of apoint into lineNum put (lineNum - 1) * 8 * oWidth into extraBit add extraBit to startChar add extraBit to endChar - now you should have the 8 end convolutedGetPixelColor Hope you get the principle - I have some functions on another machine that work with imagedata if you are still stuck? david ___ metacard mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/metacard
? How to get the pixel color without relying on mouseColor
It seems unusual that there is a function to get the color of the pixel under the mouse, but no function to get the color of an arbitrary pixel. I'm _sure_ there must be something like: get the color of pixel 240,360 which would put the triplet "0,0,0" into it, if (240,360) is a black pixel, or "255,255,255" into it if (240,360) is a white pixel. Please, don't tell me to write a function like this: function convolutedGetPixelColor aPoint set the screenMouseLoc to aPoint get the mouseColor return it end convolutedGetPixelColor Why would this be stupid? Obviously, because if I need to iterated over a _Large_ range of pixels, the user might get worried something had gone wrong, and bump/wiggle his cursor to see if the computer had frozen. Having wiggled the cursor, he just set the mouseLoc to a different Loc halfway through my giant repeat loop that checks all the pixels. So, please tell me I'm missing some function that does "the Right Thing", and not that mouseColor & screenMouseLoc is the _wonderful_ "Meta" way of doing it. Sparticus Zarris 1208 Clark Street New Albany, Indiana 47150 [EMAIL PROTECTED] (812) 944-1042 phone -- Aye Net WebMail 2.0 http://www.aye.net/getmail ___ metacard mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/metacard
