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.
747 questions
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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 ...
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Have enemy move toward player when spawned
Have an basic enemy prefab that when spawned, I would like it to lock to player and move toward them, with smooth rotation. However, as you can see in this video, the enemy initially moves away from ...
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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:
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Changing The Axis That Vector3.Slerp's Arc Happens On
I am using Vector3.Slerp to move a boomerang from the player to a target in an arc, and then back to the player.
It's currently working, but not the way that I want it to.
My issue is that I would ...
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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 ...
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Rotate vector by quaternion different formulas
I was implementing the rotation of a 3D vector by a quaternion, implementing the formula that I've found in this thread.
To testing my function, I've rotated some vectors by using MATLAB, in ...
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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 ...
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How detect collision between object1[i] and object2[j] then do something with them in Box2D games?
I am making a simple game with Box2D and SDL2. I have GameObjects vectors for example: 1.vector of Enemy 2.vector of Bullets…
in ContactListener class i can detect collision between enemyFixture and ...
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Object collision and vector reflection for complex polygons?
I am currently creating an environment to train aim-bot AI's for my game. It is a 2d world made of complex polygons, and the goal is to have the AI's shoot ricocheting bullets. Using a ray-casting ...
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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, ...
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How to tell when calculating an Intercept Point between two moving objects, when it will never intercept?
I'm not a maths person and the formulas you see on maths type questions/answer with all the symbols is completely beyond me - I'm sorry. However I had help about 18 months ago to turn a provided ...
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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 ...
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Calculate Up Vector of Object on Surface Given Points and Normals
Context
I want to find the up vector an object would have if it were leaning on a surface, given a large amount of points on that surface and their associated surface normals (i.e., an equation that ...
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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 ...
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Getting 3D slide direction
I am trying to make my player slide down a curve (like a water slide) and so far I’ve managed to get the slide direction using the following code
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