Points around a vector

Unity Engine
1

I have a number of point around a vector that can rotate. When rotating the vector how do I project the points?

5891357--628103--Screen Shot 2020-05-23 at 10.17.21 PM.png
5891357--628103--Screen Shot 2020-05-23 at 10.17.21 PM.png828×708 70.3 KB

Rotating the vector the points do not rotate only translate

5891357--628106--Screen Shot 2020-05-23 at 10.17.35 PM.png
5891357--628106--Screen Shot 2020-05-23 at 10.17.35 PM.png682×622 54.7 KB

2

How are you currently getting the points?

3

A very simple script

for (int i = 0; i < numberOfPoint ; ++i) 
{
    Vector3 pointVector = new Vector3(0,0,0);
    float ang = (360/(float)numberOfPoint)*i;
    pointVector.x = vectorStart.x + radius * Mathf.Sin (ang * Mathf.Deg2Rad);
    pointVector.z = vectorStart.y + radius * Mathf.Cos (ang * Mathf.Deg2Rad);
    pointVector.y = vectorStart.z;
}
4

I ended with this but probably a better way of doing this

pointVector = math.cross( vectorEndN.xzy ,vectorEndN);
pointVector = Quaternion.AngleAxis(ang, vectorEndN) * pointVector;
Gizmos.color = Color.blue;
Gizmos.DrawSphere(pointVector.normalized, 0.2f);
5

What are “vectorStart” and “VectorEndN” and “vectorEndN.xzy”?

When you say you’re looking for points around a vector, are you conceptualizing that vector as having a definite location in space, or only a direction and magnitude? (The Unity data type called “vector” only has a direction and magnitude, so to represent something that also has a location you’d actually need two vector variables.)

Based on your pictures, I would assume you are taking into account the vector’s location but ignoring its direction when making your calculation.

6

I got it working , it was more authoring at origin and projecting to a spherical surface. Thanks again for taking the the time to look at this.