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Thread: Graphics Drawing Images/Rectangle Detecting/Deleting

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    Default Graphics Drawing Images/Rectangle Detecting/Deleting

    Hello!

    I got serveral questions about Graphics in Java.

    • Is it possible to detect Drawn Images/Rectangles without knowing the x & y positions
    • Is it possible remove recangles? I know it's possible via "g.clearRect" but then at the place where the rectangle was is a black recangle now probaly because i work with a transparent background with a wood pattern.
    • Same question about but then with images no clearImage function found.
    • So above is the option about removing but isn't it possible to replace an drawn image with another one? I tried to draw another image on a certain x & y location but it just draws over it.
    • Another option (maybe, just brainstorming atm) it is possible of keeping track of positons where you draw something what if you make a seperate array with the places where the second image must come is it then possible to remove everything that Graphics has drawn (in a clean way so there are not black holes). And then just redraw everything from those arrays?



    Kind regards.

    PS: Sorry for bad english, was in a terrible rush when I typed this.


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    Default Re: Graphics Drawing Images/Rectangle Detecting/Deleting

    Depending on the contrasting of the colors you might be able to scan an image and find a rectangle.
    I tried to draw another image on a certain x & y location but it just draws over it.
    Yes it would.
    There are some methods in Graphics2D that might be of interest to you for drawing.

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    Default Re: Graphics Drawing Images/Rectangle Detecting/Deleting

    Quote Originally Posted by Norm View Post
    Depending on the contrasting of the colors you might be able to scan an image and find a rectangle.

    Yes it would.
    There are some methods in Graphics2D that might be of interest to you for drawing.
    I can only use Graphics in JavaTV :/

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