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Box2 stuff (#4101)

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This commit is contained in:
metalgearsloth
2023-06-01 12:00:15 +10:00
committed by GitHub
parent 7e912cf4ce
commit 0f8231b069
1 changed files with 34 additions and 23 deletions
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57
Robust.Shared.Maths/Box2.cs
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@@ -1,6 +1,7 @@
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using JetBrains.Annotations;
using Robust.Shared.Utility;
namespace Robust.Shared.Maths
@@ -102,58 +103,45 @@ namespace Robust.Shared.Maths
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 FromDimensions(float left, float bottom, float width, float height)
{
return new(left, bottom, left + width, bottom + height);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 FromDimensions(Vector2 bottomLeft, Vector2 size)
{
return FromDimensions(bottomLeft.X, bottomLeft.Y, size.X, size.Y);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 CenteredAround(Vector2 center, Vector2 size)
{
return FromDimensions(center - size / 2, size);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 CentredAroundZero(Vector2 size)
{
return FromDimensions(-size / 2, size);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 FromTwoPoints(Vector2 a, Vector2 b)
{
float minX, minY, maxX, maxY;
if (a.X < b.X)
{
minX = a.X;
maxX = b.X;
}
else
{
minX = b.X;
maxX = a.X;
}
if (a.Y < b.Y)
{
minY = a.Y;
maxY = b.Y;
}
else
{
minY = b.Y;
maxY = a.Y;
}
var min = Vector2.ComponentMin(a, b);
var max = Vector2.ComponentMax(a, b);
return new Box2(minX, minY, maxX, maxY);
return new Box2(min, max);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool Intersects(in Box2 other)
{
return other.Bottom <= this.Top && other.Top >= this.Bottom && other.Right >= this.Left &&
@@ -161,6 +149,7 @@ namespace Robust.Shared.Maths
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Enlarged(float size)
{
return new(Left - size, Bottom - size, Right + size, Top + size);
@@ -170,6 +159,7 @@ namespace Robust.Shared.Maths
/// Returns the intersection box created when two Boxes overlap.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Intersect(in Box2 other)
{
var ourLeftBottom = new System.Numerics.Vector2(Left, Bottom);
@@ -190,6 +180,7 @@ namespace Robust.Shared.Maths
/// Returns how much two Boxes overlap from 0 to 1.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly float IntersectPercentage(in Box2 other)
{
var surfaceIntersect = Area(Intersect(other));
@@ -201,6 +192,7 @@ namespace Robust.Shared.Maths
/// Returns the smallest rectangle that contains both of the rectangles.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Union(in Box2 other)
{
var ourLeftBottom = new System.Numerics.Vector2(Left, Bottom);
@@ -218,12 +210,14 @@ namespace Robust.Shared.Maths
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool IsEmpty()
{
return MathHelper.CloseToPercent(Width, 0.0f) && MathHelper.CloseToPercent(Height, 0.0f);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool Encloses(in Box2 inner)
{
return this.Left < inner.Left && this.Bottom < inner.Bottom && this.Right > inner.Right &&
@@ -231,6 +225,7 @@ namespace Robust.Shared.Maths
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool Contains(in Box2 inner)
=> Left <= inner.Left
&& Bottom <= inner.Bottom
@@ -238,12 +233,14 @@ namespace Robust.Shared.Maths
&& Top >= inner.Top;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool Contains(float x, float y)
{
return Contains(new Vector2(x, y));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly bool Contains(Vector2 point, bool closedRegion = true)
{
var xOk = closedRegion
@@ -255,6 +252,14 @@ namespace Robust.Shared.Maths
return xOk && yOk;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Rounded(int digits)
{
return new Box2(MathF.Round(Left, digits), MathF.Round(Bottom, digits), MathF.Round(Right, digits),
MathF.Round(Top, digits));
}
/// <summary>
/// Uniformly scales the box by a given scalar.
/// This scaling is done such that the center of the resulting box is the same as this box.
@@ -263,6 +268,7 @@ namespace Robust.Shared.Maths
/// <param name="scalar">Value to scale the box by.</param>
/// <returns>Scaled box.</returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Scale(float scalar)
{
if (scalar < 0)
@@ -278,6 +284,7 @@ namespace Robust.Shared.Maths
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Scale(Vector2 scale)
{
var center = Center;
@@ -289,6 +296,7 @@ namespace Robust.Shared.Maths
/// <summary>Returns a Box2 translated by the given amount.</summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 Translated(Vector2 point)
{
return new(Left + point.X, Bottom + point.Y, Right + point.X, Top + point.Y);
@@ -370,6 +378,7 @@ namespace Robust.Shared.Maths
=> (box.Width + box.Height) * 2;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public static Box2 Union(in Vector2 a, in Vector2 b)
{
var vecA = new System.Numerics.Vector2(a.X, a.Y);
@@ -385,6 +394,7 @@ namespace Robust.Shared.Maths
/// Returns this box enlarged to also contain the specified position.
/// </summary>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
[Pure]
public readonly Box2 ExtendToContain(Vector2 vec)
{
var leftBottom = new System.Numerics.Vector2(Left, Bottom);
@@ -400,6 +410,7 @@ namespace Robust.Shared.Maths
/// <summary>
/// Given a point, returns the closest point to it inside the box.
/// </summary>
[Pure]
public readonly Vector2 ClosestPoint(in Vector2 position)
{
// clamp the point to the border of the box
@@ -416,7 +427,7 @@ namespace Robust.Shared.Maths
&& MathHelper.CloseToPercent(Right, other.Right)
&& MathHelper.CloseToPercent(Top, other.Top);
}
public bool EqualsApprox(Box2 other, double tolerance)
{
return MathHelper.CloseToPercent(Left, other.Left, tolerance)