Unity failing to correctly subtract 2 vectors

Questions & Answers
1

I’m trying to rotate several points (vector2s) around an origin.
In order to do this I want to get the direction from the origin to a certain point first:

for (int i = 0; i < points.Count; ++i) {
	Vector2 dir = points *- start;*
  • print (start);*
    _ print (points*);_
    print (dir);
    _    }_
    Here’s where I create start:
    private void createStart() {
    start = new Vector2 (Random.value * 0.5f + 0.25f, Random.value * 0.5f + 0.25f);
    _    }_
    And here’s where I create the points (or in this case, just one for testing purposes, nPoints is set to one in the inspector):
    private void createPoints() {
    _     points.Clear ();_
    _     for (int i = 0; i < nPoints; ++i) {_
    _ float px = start.x + Random.value * 0.4f - 0.2f;
    float py = start.y + Random.value * 0.4f - 0.2f;_
    _     Vector2 newPoint = new Vector2(px, py);_
    _     points.Add (newPoint);_
    _     }_
    _    }_
    and finally, this is what unity prints:
    _    [40717-unityweird.png*|40717]*
    _*
    so my start, origin, is at (0.4, 0.5), my point is at (0.3, 0.3) and the difference is (-0.2, -0.2).
    im sure im missing something stupid here, but i cant find it :frowning:
2

Print() rounds, and you’re using floating point numbers, so I suspect it’s just the way they’re displayed in the console. Try to print components separately:

print (start.x + "," + start.y);
print (points_.x + "," points*.y);*_

etc.