Drawing Images

If I load an image that is 320x320 and I want to draw a a rectangular portion of that image to the buffer. Lets say from coordinates 16,0-32,32 to position 100,100 on the screen. Then I want to draw another section from 10,0 to 20,10 at position 150,100. How can I do this? Next would be seeing if I could specify a larger destination window to stretch the image.

Hope this makes sense.. if not I'll try to make it simpler, but basically I just want to know how to specify source and destination rectangles for an image draw command without using animimages.

I see GrabPixMap and DrawPixMap, but theres not much information about them. Also, it sounds like it's going to create a copy of the data contained in the image, I'd rather just keep the needed coordinates and draw the parts on the fly.

I think the command you are looking for is: DrawImageRect

I think that should work as you describe.

Nope, Function DrawImageRect only has a single set of coordinates; therefore it can not provide the ability to specify source and destination rectangles.
Basically, I want the ability to make my own drawimage where each frame can be of a different size.

you can't, that easy it is.

you will have to do a little hack using the TImageFrame type and setting the u0,u1,v0,v1 yourself

Maybe I could somehow hack into the Width and height parameters of LoadAnimImage and change them on the fly for each frame.

Does this help from the code archives...
DrawImageBlock

you could do some opengl and set the texture coordinates to your liking.

Use SetViewPort to draw a rect on the screen then use DrawImageRect to place the correct portion within the ViewPort. I've done this for a single viewport/imagerect so I imagine it'll work for multiple as well.

http://www.blitzbasic.com/Community/posts.php?topic=47526

There are multiple methods of drawing part of an image in that thread. Perhaps one will suit your needs.

Thanks, I've decided to mostly hardcode widths and heights for the sprite engine I was working on http://www.blitzmax.com/Community/posts.php?topic=48250, it just makes everything much easier. But this stuff can be usefull for other things. Thank you.