chenxin
2020-10-26 6f16dfb8bcebe67aeb95ded0d8b644af4932e690
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using System.Collections.Generic;
using UnityEngine;
 
namespace Core.Utilities
{
    public static class VectorHelper
    {
        /// <summary>
        /// A helper function that finds the average position of several component objects, 
        /// specifically because they have transforms
        /// </summary>
        /// <param name="components">
        /// The list of components to average
        /// </param>
        /// <typeparam name="TComponent">
        /// The Unity Component which has a transform
        /// </typeparam>
        /// <returns>
        /// The average position
        /// </returns>
        public static Vector3 FindAveragePosition<TComponent>(TComponent[] components) where TComponent : Component
        {
            Vector3 output = Vector3.zero;
            foreach (TComponent component in components)
            {
                if (component == null)
                {
                    continue;
                }
                output += component.transform.position;
            }
            return output / components.Length;
        }
 
        /// <summary>
        /// A helper function that finds the average position of several component objects, 
        /// specifically because they have transforms
        /// </summary>
        /// <param name="components">
        /// The list of components to average
        /// </param>
        /// <typeparam name="TComponent">
        /// The Unity Component which has a transform
        /// </typeparam>
        /// <returns>
        /// The average velocity
        /// </returns>
        public static Vector3 FindAverageVelocity<TComponent>(TComponent[] components) where TComponent : Component
        {
            Vector3 output = Vector3.zero;
            foreach (TComponent component in components)
            {
                if (component == null)
                {
                    continue;
                }
                var rigidbody = component.GetComponent<Rigidbody>();
                if (rigidbody == null)
                {
                    continue;
                }
                output += rigidbody.velocity;
            }
            return output / components.Length;
        }
 
        /// <summary>
        /// A helper function that finds the average position of several component objects, 
        /// specifically because they have transforms
        /// </summary>
        /// <param name="components">
        /// The list of components to average
        /// </param>
        /// <typeparam name="TComponent">
        /// The Unity Component which has a transform
        /// </typeparam>
        /// <returns>
        /// The average position
        /// </returns>
        public static Vector3 FindAveragePosition<TComponent>(List<TComponent> components) where TComponent : Component
        {
            Vector3 output = Vector3.zero;
            foreach (TComponent component in components)
            {
                if (component == null)
                {
                    continue;
                }
                output += component.transform.position;
            }
            return output / components.Count;
        }
 
        /// <summary>
        /// A helper function that finds the average position of several component objects, 
        /// specifically because they have transforms
        /// </summary>
        /// <param name="components">
        /// The list of components to average
        /// </param>
        /// <typeparam name="TComponent">
        /// The Unity Component which has a transform
        /// </typeparam>
        /// <returns>
        /// The average velocity
        /// </returns>
        public static Vector3 FindAverageVelocity<TComponent>(List<TComponent> components) where TComponent : Component
        {
            Vector3 output = Vector3.zero;
            foreach (TComponent component in components)
            {
                if (component == null)
                {
                    continue;
                }
                var rigidbody = component.GetComponent<Rigidbody>();
                if (rigidbody == null)
                {
                    continue;
                }
                output += rigidbody.velocity;
            }
            return output / components.Count;
        }
    }
}