DSP Robotics Support

Hi All

I'm hoping i may be able to get some help with an exe i'm trying to create. I'm trying to create a rectangle within a space that changes raito but is constrained within the space of a second rectangle. It's mainly to workout a projection canvas and then drop 16:9 projectors 'Rectangles' over the canvas.
I thought this would be easy but i can't seem to crack it, It's probably something very simple but i just can't see the solution.
Any help would be much appreciated.

I was not sure from your schematic what your goal is so I'll try to answer your question.

Suppose you have a rectangle with sides a and b, and you want to fit it into another rectangle with sides A and B, while maintaining the aspect ratio a/b. Your scale factor is

scale = min(A/a,B/b)

so your new rectangle will have the dimensions

a' = scale*a
b' = scale*b

Does that answer your question?

Thanks for pointing me in the right direction. It most definitley helps.
I'm just creating a projection calculator to help me setting up projection on shows. I know there's a few out there already but i just wanted to see if i could do my own.
I really appreciate the fast response thank you. Matt

Here is an example.

Hi Martin

Thank you very much for the example.

It really helps me understand. Sorry for being a bit slow.

thanks Martin, however, where is the rest of the image? lol

http://www.lenna.org/full/len_full.html
Warning: may contain nudity!

martinvicanek wrote:http://www.lenna.org/full/len_full.html
Warning: may contain nudity!

Thanks, she is nice, but I was just playing around. Teasing us with the half image.

You do know that as moderators we really ought to delete porn.
But this is art, right?
Nice proper real and valid art.
And not porn, right?

Cheers

Spogg

No, not porn. Art.
I would never post porn.