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454 views

Wall penetration

I have a terrain with geometry that is fairly ridged. I needed to make sure the player didn't enter the world geometry, so I used sphere-triangle intersections (after narrow down of which tris to ...
676 views

Transforming bounding spheres

When testing bounding spheres as part of the collision detection process, I'm using this method: public static BoundingSphere TransformBoundingSphere(Matrix m, BoundingSphere b) { var ...
52 views

Bounding Volumes for Empty Space

I'm creating an Android game that relies heavily on collision detection for a couple of players (at least up to 4). I researched hierarchical structures that could speed up the process. Because I have ...
428 views

Simple Bounding Sphere Calculations for 2d game

I'm writing a 2d game and have a question regarding the use of bounding spheres. I'm kind of OK with the math, but I'm confused about one thing. To work out the distance between the 2 centre points ...
113 views

Calculate diameter of sphere large enough to encompasss a frustum

I'm attempting to speed up box-to-box collision checks by first testing if two spheres large enough to encompass each (respectively) would collide (because I'm using separating axis theorem and it's ...
326 views

How to calculate the Screen Position of a bounding sphere/box?

Synopsis: What I have is an object rendered on the screen. I need to calculate the top-left / bottom-right of it's location on the screen in Screen Coordinates. Explanation: The object is ...
1k views

Unity3d: Box collider attached to animated FBX models through scripts at run-time have wrong dimension

I have several scripts attached to static and non static models of my scene. All models are instantiated at run-time (and must be instantiated at run-time because I'm procedural building the scene). ...
369 views

How do I get a SphereCollider's global origin in Unity?

I've been following this tutorial: Understanding Steering Behaviors: Collision Avoidance but I'm having trouble implementing one of the functions correctly in Unity, here's the code: private ...
26 views

Transforming the bounding sphere of an object [on hold]

I'm getting the bounding sphere of a tree object and then I draw a bounding sphere around it in world space coordinates. From that mesh I can get a bounding sphere. I'm trying to transform it ...