Pixel collision

Math and Physics Programming

Started by BloodLust666 November 29, 2005 09:13 PM

6 comments, last by GameDev.net 18 years, 4 months ago

BloodLust666

104

Author

November 29, 2005 09:13 PM

How would i approach having pixel perfect collision? i have no idea where to even start...

-------------------------Unless specified otherwise, my questions pertain:Windows Platform (with the mindset to keep things multi-platform as possible)C++Visual Studio 2008OpenGL with SFML

anist

100

November 29, 2005 09:22 PM

in 2D or 3D?

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clayasaurus

139

November 29, 2005 09:23 PM

First you should learn about box collision, as that is the first step to take for per-pixel collision. Are you doing this with OpenGL or SDL or what?

scgrn

168

November 29, 2005 09:25 PM

Link

BloodLust666

104

Author

November 29, 2005 09:27 PM

2D and i'm using DX

-------------------------Unless specified otherwise, my questions pertain:Windows Platform (with the mindset to keep things multi-platform as possible)C++Visual Studio 2008OpenGL with SFML

BloodLust666

104

Author

November 29, 2005 09:32 PM

that makes sense about the overlapping pixels.. but how would i be able to see if the pixels are overlapping BEFORE i render them?

-------------------------Unless specified otherwise, my questions pertain:Windows Platform (with the mindset to keep things multi-platform as possible)C++Visual Studio 2008OpenGL with SFML

Zakwayda

2,389

November 29, 2005 10:04 PM

I don't have much experience with pixel-perfect collision detection, but I'd think that if you want feedback information such as time of intersection and/or contact points and normals, you'd be better off using geometrical proxies such as circles, boxes, or convex polygons. Just a thought.

Anonymous

November 30, 2005 07:09 AM

For simple discrete collision, ANDing two 1 bit bitmasks together is really fast. If you find a value != 0 after ANDing you have a collision.

Pixel collision

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