Win 32: Mouse input

RuneLancer · 2004-05-20T07:46:09

Greetings! I''ve been adding mouse support for my OpenGL project and I''ve hit somewhat of a snag. After browsing MSDN and looking at a few online resources, I haven''t been able to find an answer to my problem, so I figured I''d turn to the boards. Essentially, I''m trying to allow the user to move the camera via the mouse. Nothing fancy: moving left/right spins the view around the Y axis and moving up/down around the X axis. The view remains centered around the center of the map, so it''s just a matter of rotating. I''m using this code... case WM_MOUSEMOVE: yRot += (MouseX - (lParam & 0xFFFF)) / 1.75f; MouseX= (lParam & 0xFFFF); return 0; I also had an ''xRot'' and ''MouseY'' in there but I removed them because for some reason they wouldn''t work. Moving the mouse rotated the landscape clockwise only and it did so by a tremendous amount, too. The code was essentially the same as this, except that I was getting 0xFFFF0000 and dividing by 0x10000 to get the mouse''s Y position. This works fine. Although I can''t say the movement was all that smooth. And when I hit the edge of the screen? Blonk! Mouse stops and moving it more does not result in more rotating. 1.75f is pretty much the exact amount by which I need to divide to do a full 360 degree spin. I originally thought I''d just move the cursor back to the center of the window if it hits the side (and adjust MouseX according to avoid jumping around) but the section on mouse input in MSDN made it seem as though moving the mouse was something you couldn''t do via the API (although I know I can; there just wasn''t any function to do it there...) So my question, basically, is how to avoid getting stuck on the edge of the screen. Any additional information will be very welcomed, though.

For Beginners

Started by RuneLancer May 17, 2004 06:44 PM

10 comments, last by RuneLancer 19 years, 11 months ago

merlin9x9

174

May 19, 2004 04:49 PM

quote:That has already been suggested, tried, and resulted in the problem being solved. Thank you for trying.

Funny... The only instances of GetCursorPos that my browser could find on the page were from me directly or indirectly.

RuneLancer

253

Author

May 20, 2004 07:46 AM

quote:Original post by merlin9x9
quote:That has already been suggested, tried, and resulted in the problem being solved. Thank you for trying.

Funny... The only instances of GetCursorPos that my browser could find on the page were from me directly or indirectly.

I think that anyone with half a brain would attain the logical conclusion that if there''s a ''Set...'' function, there''d be a reciprocal ''Get...'' function to go with it most of the time. No offense or disrespect intended.

Win 32: Mouse input

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