52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
using Microsoft.Xna.Framework;
|
|
using MrGameEng.Graphics;
|
|
using Xunit;
|
|
|
|
namespace MrGameEng.Graphics.Tests;
|
|
|
|
public class CullingTests
|
|
{
|
|
[Fact]
|
|
public void BoundingCircle_UnrotatedTopLeftOrigin_CenterIsRegionCenter()
|
|
{
|
|
var transform = Transform2D.At(new Vector2(100f, 200f));
|
|
|
|
var (center, radius) = CullingMath.SpriteBoundingCircle(transform, 32f, 32f, Vector2.Zero);
|
|
|
|
Assert.Equal(new Vector2(116f, 216f), center);
|
|
Assert.Equal(0.5f * MathF.Sqrt(32f * 32f * 2f), radius, 3);
|
|
}
|
|
|
|
[Fact]
|
|
public void BoundingCircle_CenterOrigin_CenterIsPosition()
|
|
{
|
|
var transform = Transform2D.At(new Vector2(50f, 50f));
|
|
|
|
var (center, _) = CullingMath.SpriteBoundingCircle(transform, 64f, 32f, new Vector2(32f, 16f));
|
|
|
|
Assert.Equal(new Vector2(50f, 50f), center);
|
|
}
|
|
|
|
[Fact]
|
|
public void BoundingCircle_Scale_GrowsRadius()
|
|
{
|
|
var transform = new Transform2D(Vector2.Zero, scale: new Vector2(2f, 2f));
|
|
|
|
var (_, radius) = CullingMath.SpriteBoundingCircle(transform, 10f, 10f, Vector2.Zero);
|
|
|
|
Assert.Equal(0.5f * MathF.Sqrt(800f), radius, 3);
|
|
}
|
|
|
|
[Theory]
|
|
[InlineData(50f, 50f, true)] // inside
|
|
[InlineData(-4f, 50f, true)] // touching from the left (radius 5)
|
|
[InlineData(-20f, 50f, false)] // far left
|
|
[InlineData(50f, 130f, false)] // far below
|
|
public void CircleIntersectsRect_DetectsOverlap(float x, float y, bool expected)
|
|
{
|
|
var rect = new RectF(0f, 0f, 100f, 100f);
|
|
|
|
Assert.Equal(expected, CullingMath.CircleIntersectsRect(new Vector2(x, y), 5f, rect));
|
|
}
|
|
}
|