[visionegg] Re: pygame.mouse.get_pos()
- From: "Maher, Jeffrey" <jeffrey.maher@xxxxxxxxxxxxx>
- To: <visionegg@xxxxxxxxxxxxx>
- Date: Wed, 11 Jul 2007 12:55:16 -0500
Correct, my apologies, I did mean bottom left.
What I'm confused about, is that on the screen, as I move my mouse around, the
y values of the Position readout still starts from (0,0) in the upper left hand
corner. The bottom left reads a value of (0,600), so basically the mathematical
way of converting this to what I want would be the -y + 600 (so that that the
bottom of the display reads a value of zero, and the top reads a value of 600).
I would like the position readout to display the OpenGL coordinates as opposed
to the pygame.mouse version.
I'm not having a problem with the positioning of text on the screen, in fact I
would like the position readout to reflect the manner in which text is placed,
so that I can go back for later reference to the specific location.
Perhaps there's a problem with the conversion to OpenGL coordinates then?
Also, I know this is mildly off subject, but you wouldn't happen to know how to
assign a key on the keyboard to a function such as quitting or alternating
background color? Any key that I press other than space, esc, home, end, and
the arrows, closes out the program. I've managed to get the processes I want
to happen occur with these keys, but not with any other. I know the coding for
these functions are good, just not how to assign say the "plus" sign as a
recognized key.
-Jeff
________________________________
From: visionegg-bounce@xxxxxxxxxxxxx on behalf of adam naples
Sent: Wed 7/11/2007 12:26 PM
To: visionegg@xxxxxxxxxxxxx
Subject: [visionegg] Re: pygame.mouse.get_pos()
bottom right?
I think you might mean bottom left?
either way, it depends on what you want to do.
the line
y = screen.size[1]-y # convert to OpenGL coords
is taking the vertical position of the mouse on the screen and flipping the
coordinates, remember opengl coordinates start in the bottom left, not the
upper left.
Are you trying to change the way objects are placed on the screen?
I have a big pile of code for doing things that sounds like they are related to
this, but I'm not sure what you want to do.
hope I can help
-a
On Jul 10, 2007, at 12:30 PM, Maher, Jeffrey wrote:
Hello all,
As I have been going through the programming, I have run into a major
stumbling block when it comes to pygame.mouse.get_pos().
According to the description , pygame.mouse.get_pos() takes the
coordinate mapping system from the upper left hand corner of the display. Is
there anyway to make this map out the coordinates from the bottom right hand
corner, so that standard x-y coordinates can be applied (such as in the
positioning of text)?
For reference here's how the program reads:
just_current_pos = mouse_position
(x,y) = pygame.mouse.get_pos()
y = screen.size[1]-y # convert to OpenGL coords
mouse_position = (x,y)
if just_current_pos != mouse_position:
last_mouse_position = just_current_pos
My attempts at changing the coordinates mathematically (y= -y +600)
have failed, either by having the display outside of the viewing screen, or my
personal favorite, inverting the mouse all-together. I've tried manipulating
the y= line as well as the mouse_position line, all to no avail.
Any help or suggestions would be greatly appreciated.
Thanks,
Jeff
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