Questions tagged [vector]
A mathematical concept that can be used to express position, direction or velocity and which can simplify or outright trivialise spatial problems.
748 questions
2 votes
2 answers
141 views
Pseudo-3D Parallax Shifting
everyone. I am working on a game that relies pretty substantially on "faking" 3D by using different parallaxing and polygonal transform techniques. In a current example, I am working on a ...
- 21
1 vote
1 answer
577 views
Given two points (A and B), how can I obtain a point a set distance along the line between them?
Let's say I have position A, that is (0,0) and Position B that is (10,5). Now let's say I know that position C is 5 units' distance from position A in direction to Position B. Provided that the ...
- 133
3 votes
6 answers
2k views
How can I rotate a 16-bit signed integer vector?
I am trying to rotate a vector made of two signed 16-bit coordinates (-32768 to 32767). Using a LUT for sin/cos, I can use the standard method for rotating a vector: ...
- 811
0 votes
1 answer
92 views
Problem with 2D projection
I have a green circle: Inside the circle, the white frame moves to wherever P, the projection of the targets 3D position into a 2D point, is. However, outside the circle, the frame will move to the ...
- 21
0 votes
0 answers
70 views
Fast way to compare a large set of positions, rotations, velocities, etc. during runtime (possibly every frame)
The Goal I'm working on a vr gesture recognition system. Normally these systems are dependent on "drawn" gestures, but I want something that compares position, rotation, velocity, angular ...
- 13
0 votes
0 answers
430 views
Suspension vector direction of a raycast vehicle
I'm working on a raycast-based vehicle in a 3D world using a physics engine. It's basically a chassis object that contains a transform (translation, rotation, scale), a dynamic rigid body (with mass, ...
- 736
1 vote
1 answer
120 views
How to calculate rotation needed to cancel out perspective shift
I have a direction vector that's pointing to (0,0,1) in local object space. How can I calculate rotation needed to rotate it on Y axis so that from camera's point of view it would look as if it's ...
- 13
1 vote
2 answers
276 views
Calculate path segments size
I have a problem more closely described on a picture below. The idea is that I have my agent in point A and I want to get to the point B. The problem is, that agents rotation towards point B is alpha ...
- 13