HeavenStudio/Assets/Auto Letterbox/Util.cs

377 lines
13 KiB
C#
Raw Normal View History

using UnityEngine;
using System.Collections;
using System.Linq.Expressions;
using System.Reflection;
using System;
namespace AutoLetterbox {
/* Util.cs
*
* Utility Class with multiple use mathmatical functions
*
* Written by Tom Elliott and Milo Keeble */
public static class Util {
public static string GrootWhatAreYouDoing() {
return "I am Groot.";
}
/// <summary>
/// Returns a value as a positive number
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static float AsPositive(float value) {
return Mathf.Abs(value);
}
/// <summary>
/// Returns a value as a negative number
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static float AsNegative(float value) {
return -Mathf.Abs(value);
}
/// <summary>
/// Bezier Interpolation between multiple points
/// </summary>
public static float BezierCurve(float[] p, float t) {
if (p.Length > 2) {
float[] newPoints = new float[p.Length - 1];
for (int i = 0; i < newPoints.Length; i++) {
newPoints[i] = Lerp(p[i], p[i + 1], t);
}
return BezierCurve(newPoints, t);
} else if (p.Length == 2) {
return Lerp(p[0], p[1], t);
} else {
Debug.Log("WARNING: A class attempted to get a Bezier Curve with less than two points!");
return 0;
}
}
/// <summary>
/// Bezier Interpolation between multiple points
/// </summary>
public static Vector3 BezierCurve(Vector3[] p, float t) {
if (p.Length > 2) {
Vector3[] newPoints = new Vector3[p.Length - 1];
for (int i = 0; i < newPoints.Length; i++) {
newPoints[i] = Lerp(p[i], p[i + 1], t);
}
return BezierCurve(newPoints, t);
} else if (p.Length == 2) {
return Lerp(p[0], p[1], t);
} else {
//Debug.Log("WARNING: A class attempted to get a Bezier Curve with less than two points!");
return Vector3.zero;
}
}
/// <summary>
/// Takes an existing velocity and a point of collision relative to the center of the object traveling
/// Returns a new, reflected velocity
/// (Rough estimate, should be considered inacurrate until a truer calculation is implemented)
/// </summary>
/// <param name="originalVelocity"></param>
/// <param name="normalOfCollision"></param>
/// <returns></returns>
public static Vector3 CalculateReflectedVelocity(Vector3 originalVelocity, Vector3 normalOfCollision) {
Vector3 hitDirection = -normalOfCollision;
Vector3 newDirection = originalVelocity.normalized;
newDirection = new Vector3(newDirection.x - hitDirection.x, newDirection.y - hitDirection.y, 0);
if (newDirection.sqrMagnitude == 0f) {
newDirection = -originalVelocity.normalized;
}
return newDirection;
}
/// <summary>
/// Returns a value no greater than max and no less than min
/// </summary>
/// <param name="min"></param>
/// <param name="max"></param>
/// <param name="value"></param>
/// <returns></returns>
public static float Clamp(float min, float max, float value) {
value = (value < min) ? min : value;
value = (value > max) ? max : value;
return value;
}
/// <summary>
/// Returns a value no greater than max and no less than min
/// </summary>
/// <param name="min"></param>
/// <param name="max"></param>
/// <param name="value"></param>
/// <returns></returns>
public static int Clamp(int min, int max, int value) {
value = (value < min) ? min : value;
value = (value > max) ? max : value;
return value;
}
/// <summary>
/// Converts a unity color to a hex string
/// </summary>
/// <param name="color">Color to convert, can be Color as well as Color32</param>
/// <returns>A hex string of the passed in color</returns>
public static string ColorToHex(Color32 color) {
string hex = color.r.ToString("X2") + color.g.ToString("X2") + color.b.ToString("X2");
return hex;
}
/// <summary>
/// Converts an angle in Degrees to a Vector2
/// </summary>
/// <returns>The converted Vector2</returns>
/// <param name="_angle">Angle in Degrees</param>
public static Vector2 DegreesToVector(float _angle) {
return new Vector2((float)Math.Cos(_angle * Mathf.Deg2Rad), (float)Math.Sin(_angle * Mathf.Deg2Rad));
}
/// <summary>
/// Returns the float difference between a and b
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static float Difference(float a, float b) {
return (a > b) ? a - b : b - a;
}
/// <summary>
/// Returns the integer difference between a and b
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static int Difference(int a, int b) {
return (a > b) ? a - b : b - a;
}
/// <summary>
/// Returns a normalized direction vector pointing at target from origin
/// </summary>
public static Vector3 DirectionVector(Vector3 origin, Vector3 target) {
return (target - origin).normalized;
}
/// <summary>
/// Outputs a custom error message from sender
/// Use this to keep error messages consistent
/// </summary>
public static void Error(object sender, string error) {
if (sender != null) {
Debug.Log(sender.GetType().ToString() + ": " + error);
} else {
Debug.Log("NULL SENDER: " + error);
}
}
/// <summary>
/// Returns the code given name of the variable
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expression"></param>
/// <returns></returns>
public static string GetMemberName<T>(Expression<Func<T>> expression) {
MemberExpression body = (MemberExpression)expression.Body;
return body.Member.Name;
}
/// <summary>
/// Converts a hex string to a unity color
/// </summary>
/// <param name="hex">The hex string to convert</param>
/// <returns>A Color of the passed in Hex String</returns>
public static Color HexToColor(string hex) {
byte r = byte.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber);
byte g = byte.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber);
byte b = byte.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber);
return new Color32(r, g, b, 255);
}
/// <summary>
/// Returns the flag number for an int
/// </summary>
/// <param name="_index"></param>
/// <returns></returns>
public static int IndexToFlags(int _index) {
switch (_index) {
case 0: return 1;
case 1: return 2;
case 2: return 4;
case 3: return 8;
case 4: return 16;
case 5: return 32;
case 6: return 64;
case 7: return 128;
case 8: return 256;
case 9: return 512;
default: return -1;
}
}
/// <summary>
/// Returns true if the given integer is odd
/// Returns false if the given integer is even
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static bool IsOdd(int value) {
return value % 2 != 0;
}
/// <summary>
/// Linear Interpolation between two points
/// </summary>
public static Vector3 Lerp(Vector3 p1, Vector3 p2, float t) {
return p1 + (p2 - p1) * t;
}
/// <summary>
/// Linear Interpolation between two points
/// </summary>
public static float Lerp(float p1, float p2, float t) {
return p1 + (p2 - p1) * t;
}
/// <summary>
/// Outputs an error message from sender stating that variableName is null
/// Use this to keep error messages consistent
/// </summary>
public static void NullError(object sender, string variableName, string extraNotes = "") {
if (sender == null) {
Debug.Log("NULL SENDER: " + variableName + " is null! " + extraNotes);
} else {
Debug.Log(sender.GetType().ToString() + ": " + variableName + " is null! " + extraNotes);
}
}
/// <summary>
/// Returns value as a percentage of max - min clamped between 0 and 1
/// </summary>
/// <param name="min"></param>
/// <param name="max"></param>
/// <param name="value"></param>
/// <returns></returns>
public static float Percent(float min, float max, float value) {
if (max - min == 0) {
//Debug.Log("WARNING: A class attempted to find a percentage of 0!");
return 0f;
}
return Clamp(0f, 1f, (value - min) / (max - min));
}
/// <summary>
/// Returns value as an unclamped percentage of max - min
/// </summary>
/// <param name="min"></param>
/// <param name="max"></param>
/// <param name="value"></param>
/// <returns></returns>
public static float PercentUnclampled(float min, float max, float value) {
if (max - min == 0) {
Debug.Log("WARNING: A class attempted to find an unclamped percentage of 0!");
return 0f;
}
return (value - min) / (max - min);
}
/// <summary>
/// Takes 2 rectangles and tests if they intersect
/// </summary>
/// <param name="extremeMinA"></param>
/// <param name="extremeMaxA"></param>
/// <param name="extremeMinB"></param>
/// <param name="extremeMaxB"></param>
/// <returns></returns>
public static bool RectContainsRect(Vector2 extremeMinA, Vector2 extremeMaxA, Vector2 extremeMinB, Vector2 extremeMaxB) {
if (extremeMinA.y > extremeMaxB.y || extremeMaxA.y < extremeMinB.y ||
extremeMinA.x > extremeMaxB.x || extremeMaxA.x < extremeMinB.x) {
return false;
} else {
return true;
}
}
/// <summary>
/// Returns a vector3 reflected on the X axis
/// </summary>
/// <param name="_vector"></param>
/// <returns></returns>
public static Vector3 ReflectOnXAxis(Vector3 _vector) {
_vector.x = -_vector.x;
return _vector;
}
/// <summary>
/// Returns a vector3 reflected on the X and Y axis
/// </summary>
/// <param name="_vector"></param>
/// <returns></returns>
public static Vector3 ReflectOnXandYAxis(Vector3 _vector) {
_vector.x = -_vector.x;
_vector.y = -_vector.y;
return _vector;
}
/// <summary>
/// Returns a vector3 reflected on the Y axis
/// </summary>
/// <param name="_vector"></param>
/// <returns></returns>
public static Vector3 ReflectOnYAxis(Vector3 _vector) {
_vector.y = -_vector.y;
return _vector;
}
/// <summary>
/// Converts a Vector2 to an angle in Degrees
/// </summary>
/// <returns>The angle in degrees.</returns>
/// <param name="_vector">A vector2 to convert</param>
public static float VectorToDegrees(Vector2 _vector) {
float deg = (float)Mathf.Atan2(_vector.y, _vector.x) * Mathf.Rad2Deg;
return (deg > 0) ? deg : deg + 360f;
}
/// <summary>
/// Returns 'up' as if the X and Y axis where ground plane (Rather than X and Z)
/// </summary>
/// <returns></returns>
public static Vector3 XYplaneUpDirection() {
return new Vector3(0, 0, -1);
}
/// <summary>
/// Returns true if the given point is on screen via the main Camera
/// </summary>
/// <returns></returns>
public static bool IsPointOnMainCamera(Vector3 _point) {
if (Camera.main == null) { return false; }
Vector3 screenPoint = Camera.main.WorldToScreenPoint(_point);
if (screenPoint.x < 0 || screenPoint.y > Screen.width || screenPoint.y < 0 || screenPoint.y > Screen.height) {
return false;
} else {
return true;
}
}
//HexToColor & ColorToHex Shamelessly taken from wiki.unity3d.com/index.php?title=HexConverter, Written by mvi?
}
}