splitting bitmaps

[Kevin A.]

Hi all,

I'm trying to make a little game in VB.NET that uses sprites (bitmaps)
with a fixed size, currently 32x32 pixels.
Now I was thinking: when I want to include objects in my game
(buildings or so) that consist of multiple sprites, I would have to
divide that object into individual sprites and draw them separately in
Paint. But this is too hard to do.
For example, if I wanted a building with a size of 96x64 pixels
(or 3x2 measured in sprites), I would have to draw 6 separate images
of 32x32 in Paint.
Or: I could draw the entire image of 96x64 in one piece, and include
a function in my application that divides this large image into 6 images
of 32x32.
The problem is: how can I do this? How can I copy a part of an
image (the large image) into a smaller image (the sprite)?

Please help. Thanks in advance.

Kevin

[Antoine Cote [MSFT]]

Hello Kevin,

there is an overload of Graphics.DrawImage that takes the source rectangle
and the destination rectangle as arguments. So you could call DrawImage
repeatedly with squares of 32x32 at a time to draw from your source image
to a target device (or bitmap).

HTH
Antoine
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From: "Kevin A." <ke*********@antwerpen.be>
Subject: splitting bitmaps
Date: Sat, 20 Sep 2003 17:47:10 +0200
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Hi all,

I'm trying to make a little game in VB.NET that uses sprites (bitmaps)
with a fixed size, currently 32x32 pixels.
Now I was thinking: when I want to include objects in my game
(buildings or so) that consist of multiple sprites, I would have to
divide that object into individual sprites and draw them separately in
Paint. But this is too hard to do.
For example, if I wanted a building with a size of 96x64 pixels
(or 3x2 measured in sprites), I would have to draw 6 separate images
of 32x32 in Paint.
Or: I could draw the entire image of 96x64 in one piece, and include
a function in my application that divides this large image into 6 images
of 32x32.
The problem is: how can I do this? How can I copy a part of an
image (the large image) into a smaller image (the sprite)?

Please help. Thanks in advance.

Kevin