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Angle redirection

Started by TheShadow Apr 25, 2003 at 2:17 PM 6 replies 350+ views

Original Post

Apr 25, 2003 at 2:17 PM

Is this the best formula for in game angle redirection... Y = abs( d + (180 - 2d) ) where d is my original angle.... Its what i came up with after looking at the problem [edited by - TheShadow on April 25, 2003 3:26:50 PM]

Dobbs

Apr 25, 2003 at 2:44 PM

What do you mean by in game angle redirection? It looks vaguely like you''re trying to determine the angle of something bouncing off a surface, is that it?

TheShadow

Author

TheShadow

Apr 25, 2003 at 2:50 PM

Yes... like a wall collision sorry for that...

TheShadow

Author

TheShadow

Apr 25, 2003 at 3:14 PM

I got some trouble with it

it works only for angles lower than 45 and greater than 135... i got this formula with geometry...

Sneftel

297

Sneftel

Apr 25, 2003 at 3:17 PM

If d is the angle from the surface normal:

Y = -d

If d is the angle from a line parallel to the surface:

Y = 180 - d

How appropriate. You fight like a cow.

TheShadow

Author

TheShadow

Apr 25, 2003 at 3:19 PM

That would give me same values for example

Y = | 180 - 135 | = | 180 - 225 |

Sneftel

297

Sneftel

Apr 25, 2003 at 3:26 PM

Why are you so fond of absolute values? You don''t want them here.

Negative angles are perfectly common and acceptable math. If you don''t like them, add 360. Don''t do abs. I''ll say it again: don''t do abs. It doesn''t do what you want it to do.

How appropriate. You fight like a cow.

TheShadow

Author

TheShadow

Apr 25, 2003 at 3:40 PM

I think d - 180 does the job best thank u
will use negatives

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