bounce_pair: Calculate collsion vectors for two objects

In jirilukavsky/motrack: Tools for Multiple Object Tracking experiments

Calculate collsion vectors for two objects

Description

Calculate collsion vectors for two objects

Usage

bounce_pair(v1, v2, x1, x2)

Arguments

v1	Velocity vector of object 1. Two-dimensional numeric vector.
v2	Velocity vector of object 2. Two-dimensional numeric vector.
x1	Center of object 1 in the time collision. Two-dimensional numeric vector.
x2	Center of object 1 in the time collision. Two-dimensional numeric vector.

Value

list of the two two-dimension vectors - new speed for object 1 and 2

Examples

# direct collision, speeds swap
bounce_pair(c(0, 1), c(0, -1), c(0, 0), c(0, 1))

# 45deg contact angle, makes 90deg turns
bounce_pair(c(0, 1), c(0, -1), c(0, 0), c(1, 1))
bounce_pair(c(0, 1), c(0, -1), c(0, 1), c(1, 0))

# distance is not relevant, direct or 45 deg contact
bounce_pair(c(0, 1), c(0, -1), c(0, 0), c(0, 2))
bounce_pair(c(0, 1), c(0, -1), c(0, 0), c(2, 2))

# Works also for different velocities
bounce_pair(c(0, 1), c(0, -2), c(0, 0), c(0, 1))
bounce_pair(c(0, 1), c(0, -2), c(0, 0), c(1, 1))

jirilukavsky/motrack documentation built on Jan. 30, 2023, 5:04 a.m.