Jump to content
  • Advertisement
Sign in to follow this  
redbaseone

not so good at math, please help

This topic is 3028 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

hello, im not so good at math, please help me, i need help calculating the 2-dimensional coordinate positions of the common tangent lines (l1 & l2 in image) of cirles C1 and C2, i.e the T1, T2 , T3 & T4 point coordinates like in this image: knowing following: the center of the circles C1 & C2 , also radii R & r and the distance "d" between centers of circles. thank you !

Share this post


Link to post
Share on other sites
Advertisement
This sounds like a homework question.

Are you allowed to use vector math? If you create certain vectors, then for some of them you'll have an equation for their length (which is given), and for others you can rely on the fact that the dot product of two perpendicular vectors is 0.

Share this post


Link to post
Share on other sites
Quote:
Original post by Gage64
This sounds like a homework question.

Are you allowed to use vector math? If you create certain vectors, then for some of them you'll have an equation for their length (which is given), and for others you can rely on the fact that the dot product of two perpendicular vectors is 0.


Gage64, based on redbaseone's prior, and recent, posts, I believe this is not homework. I believe he is working on a pathfinding/pathfollowing implementation for a game.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!