Draw and erase ?

Hi,
so far, I can draw shapes on a background (using the methods in the java 2D tutorial). But what I'd like to know is how I can erase a shape already drawn.
My game is a monopoly : I can draw houses on the correct squares. Okay, but when the player sells a house, it must disappear. How do I perform this ?
BTW : perphaps there is a better wawy to achieve this goal than drawing on the background (buffered) ? Feel free to suggest anything you would think better ;)
Thanks for your help.

You either have to clear the whole component and redraw everything in the appropriate order, except what you don't want to show anymore, or you have to clear the area of the erased item and redraw what was "under" it. Well, I guess you don't really need to "clear" it, just draw what was under it on top of it again (including whatever background if that shows in that area). More often then not, the former is simpler to do, although not necessarily the best performance-wise.

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Draw and erase in AS3 help needed

Hello all
I have a 200x200 movie clip in a certain position I am trying
to draw in as3, and then erase it to reveal another clip
underneath. I am not able to specify the erase brush to be active
just on top of that clip not on all over the stage.
Here what I have so far , scratch is the name of my original
clip I am drawing back
var bitmap:Bitmap=new Bitmap();
var bd:BitmapData=new
BitmapData(scratch.width,scratch.height,true,0x00FFFFFF);
bd.draw(scratch);
bitmap.bitmapData=bd;
addChild(bitmap);
bitmap.x = 200;
bitmap.y = 200;
removeChild(scratch);
but when I start erasing I have to start from 0,0 to erase my
bitmap.
THanks for your help

Lgeee wrote:
And how would i go about doing that?By making a proper design.
This way, I can easily do what the object itself is made to do, without writing alot of code that checks what kind of object was sendt.
The first way I did this was:
Psudo Code:
Object obj = input.readObject();
String type = obj.getClass().toString();
if (type.contains("logonObject")) {
} else if (type.contains("playerObject")) {
I don't think that's relevant. I don't see where that code uses anything which is specific to the server and to the client. Those class names look like they belong in the server, so that code shouldn't be in a "shared" class. It should be in a "server" class.
As for the issue of having to tell what kind of object was sent, I'm sure there are better ways than just sending an object and then having the receiver inspect the object to see what kind of object it was.

Draw and erase boxes

I have a project that will present screen-shot images to
users’ one-at-a-time. When presented a screen-shot, the user
needs to categorize specific portions of it. There are 7
categories, which are color coded (e.g., main content –red,
navigation – blue, etc.). Ideally, I would like the user to
click on a category label and then be able to drag a box across the
portion of the image that corresponds to the category. After
releasing the mouse a colored box should appear over that portion
of the image. Users will need to categorize multiple segments of
each screen-shot. They will also need to erase boxes in case they
make errors. Does anyone have suggestions for how I might
accomplish this in Authorware or could you point me to examples
where I might get ideas about how to proceed.
Thanks very much.

Keep a list of all the boxes that are drawn, then erase them
all and redraw
only the ones you want to keep. You can use a
multidimensional list or a
text string where each line contains numbers separated by
commas that are
the box coordinates.
HTH;
Amy
"gibbsDuq" <[email protected]> wrote in
message
news:eep7la$qu1$[email protected]..
> Chirs and Steve, thank you for the information. When I
draw multiple
> boxes on
> the screen, can one box be erased without impacting the
other boxes? How
> might
> I go about this? I'd appreciate any suggestions.
>
> Thanks
>
>

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http://support.apple.com/kb/HT3743

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Draw and erase ?

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