94 lines
3.9 KiB
C#
94 lines
3.9 KiB
C#
|
using UnityEngine;
|
|||
|
|
|
|||
|
|
namespace Unity.Burst.Editor
|
|||
|
|
{
|
|||
|
|
internal static class BurstMath
|
|||
|
|
{
|
|||
|
|
private const float HitBoxAdjust = 2f;
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Rotates <see cref="point"/> around a pivot point according to angle given in degrees.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="angle">Angle in degrees.</param>
|
|||
|
|
/// <param name="point">Point to rotate.</param>
|
|||
|
|
/// <param name="pivotPoint">Pivot point to rotate around.</param>
|
|||
|
|
/// <returns>The rotated point.</returns>
|
|||
|
|
internal static Vector2 AnglePoint(float angle, Vector2 point, Vector2 pivotPoint)
|
|||
|
|
{
|
|||
|
|
// https://matthew-brett.github.io/teaching/rotation_2d.html
|
|||
|
|
// Problem Angle is calculates as angle clockwise, and here we use it as it was counterclockwise!
|
|||
|
|
var s = Mathf.Sin(angle);
|
|||
|
|
var c = Mathf.Cos(angle);
|
|||
|
|
point -= pivotPoint;
|
|||
|
|
|
|||
|
|
return new Vector2(c * point.x - s * point.y, s * point.x + c * point.y) + pivotPoint;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Calculated angle in degrees between two points.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="start">Starting point.</param>
|
|||
|
|
/// <param name="end">End point.</param>
|
|||
|
|
/// <returns>Angle in degrees.</returns>
|
|||
|
|
internal static float CalculateAngle(Vector2 start, Vector2 end)
|
|||
|
|
{
|
|||
|
|
var distance = end - start;
|
|||
|
|
var angle = Mathf.Rad2Deg * Mathf.Atan(distance.y / distance.x);
|
|||
|
|
if (distance.x < 0)
|
|||
|
|
{
|
|||
|
|
angle += 180;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return angle;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Checks if <see cref="point"/> is within <see cref="rect"/> enlarged by <see cref="HitBoxAdjust"/>.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="rect">Give rect to enlarge and check with.</param>
|
|||
|
|
/// <param name="point">Given point to match in enlarged <see cref="rect"/>.</param>
|
|||
|
|
/// <returns>Whether <see cref="point"/> is within enlarged <see cref="rect"/>.</returns>
|
|||
|
|
internal static bool AdjustedContains(Rect rect, Vector2 point)
|
|||
|
|
{
|
|||
|
|
return rect.yMax + HitBoxAdjust >= point.y && rect.yMin - HitBoxAdjust <= point.y
|
|||
|
|
&& rect.xMax + HitBoxAdjust >= point.x && rect.xMin - HitBoxAdjust <= point.x;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Checks if <see cref="num"/> is within the closed interval defined by endPoint1 and endPoint2.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="endPoint1">One side of range.</param>
|
|||
|
|
/// <param name="endPoint2">Other side of range.</param>
|
|||
|
|
/// <param name="num">Number to check if it is in between <see cref="endPoint1"/> and <see cref="endPoint2"/>.</param>
|
|||
|
|
/// <returns>Whether <see cref="num"/> is within given range.</returns>
|
|||
|
|
internal static bool WithinRange(float endPoint1, float endPoint2, float num)
|
|||
|
|
{
|
|||
|
|
float start, end;
|
|||
|
|
if (endPoint1 < endPoint2)
|
|||
|
|
{
|
|||
|
|
start = endPoint1;
|
|||
|
|
end = endPoint2;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
start = endPoint2;
|
|||
|
|
end = endPoint1;
|
|||
|
|
}
|
|||
|
|
return start <= num && num <= end;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// Rounds down to nearest amount specified by <see cref="to"/>.
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="number">Number to round down.</param>
|
|||
|
|
/// <param name="to">Specifies what amount to round down to.</param>
|
|||
|
|
/// <returns><see cref="number"/> rounded down to amount <see cref="to"/>.</returns>
|
|||
|
|
internal static float RoundDownToNearest(float number, float to)
|
|||
|
|
{
|
|||
|
|
//https://www.programmingnotes.org/7601/cs-how-to-round-a-number-to-the-nearest-x-using-cs/
|
|||
|
|
float inverse = 1 / to;
|
|||
|
|
float dividend = Mathf.Floor(number * inverse);
|
|||
|
|
return dividend / inverse;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|