Questions tagged [sphere]
A geometric primitive in which all points have the same distance to a midpoint.
89 questions
0 votes
1 answer
57 views
Is an assumption of Welzl’s algorithm valid?
The stated assertion that a point outside some intermediate Minimum Enclosing Sphere is on the boundary of the final Minimum Enclosing Sphere seems unsupportable. It is true only for the first point ...
1 vote
1 answer
126 views
Why is my raycast not working?
I'm trying to ray-cast mouse clicks to the surface of a sphere (from which point, I'm going to get the coordinates of the vertex of the sphere's mesh that are closest to the click). The following ...
- 474
0 votes
1 answer
240 views
How to live on sphere?
What I want to achieve I want to generate sphere planet world, seamless of course, for RTS game like Planetary Annihilation: TITANS, which means I want: place walking agents on sphere, move them on a ...
- 13
0 votes
1 answer
177 views
How do I determine which pixel is under the cursor when looking at an equirectangular image through a camera?
I am working on a game. The camera is freely rotatable by the user. The background is displayed from an equirectangular image. I need to know which pixel of the background image is located under the ...
0 votes
0 answers
145 views
Why are there gaps in my fibonacci sphere?
I recently took an interest in sphere topologies to find which one is the best. The most popular one seems to be the fibonacci sphere. So I went and did some research and found some C code online that ...
- 47
0 votes
1 answer
201 views
How to scale down noise intensity?
I'm currently making a planet and for that, I added noise, to create terrain on the surface. The method I'm using is creating simplex noise (that ends up looking like the image below) And I write ...
- 47
0 votes
1 answer
200 views
Help understanding the math to position sphere vertices by latitude and longitude
For a project of mine, I need to render spheres without loading a pre-made model or using built-in functions. I found this bit of code on the internet that seems to work but I really want to ...
- 47
0 votes
1 answer
108 views
How would I calculate the velocity of a sphere with an impulse applied at the top?
I'm developing a rigid body physics engine and currently have accurately calculated the angular velocity of the sphere when impulsed. Unfortunately though, I'm not calculating the velocity correctly ...
- 1