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MoonTools.Bonk
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Code Issues Pull Requests Releases 4 Wiki Activity

remove linq methods from AABB calculation

pull/10/head
Evan Hemsley 2019-12-29 21:09:28 -08:00
parent 0952b77761
commit d9bc05ee32
2 changed files with 30 additions and 10 deletions
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36
Bonk/AABB.cs
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@ -1,6 +1,5 @@
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Linq;
using System.Numerics; using System.Numerics;
using MoonTools.Core.Structs; using MoonTools.Core.Structs;
@ -21,14 +20,39 @@ namespace MoonTools.Core.Bonk
public static AABB FromTransformedVertices(IEnumerable<Position2D> vertices, Transform2D transform) public static AABB FromTransformedVertices(IEnumerable<Position2D> vertices, Transform2D transform)
{ {
var TransformedVertices = vertices.Select(vertex => Vector2.Transform(vertex, transform.TransformMatrix)); float minX = float.MaxValue;
float minY = float.MaxValue;
float maxX = float.MinValue;
float maxY = float.MinValue;
foreach (var vertex in vertices)
{
var transformedVertex = Vector2.Transform(vertex, transform.TransformMatrix);
if (transformedVertex.X < minX)
{
minX = transformedVertex.X;
}
if (transformedVertex.Y < minY)
{
minY = transformedVertex.Y;
}
if (transformedVertex.X > maxX)
{
maxX = transformedVertex.X;
}
if (transformedVertex.Y > maxY)
{
maxY = transformedVertex.Y;
}
}
return new AABB return new AABB
{ {
MinX = TransformedVertices.Min(vertex => vertex.X), MinX = minX,
MinY = TransformedVertices.Min(vertex => vertex.Y), MinY = minY,
MaxX = TransformedVertices.Max(vertex => vertex.X), MaxX = maxX,
MaxY = TransformedVertices.Max(vertex => vertex.Y) MaxY = maxY
}; };
} }

4
Bonk/BroadPhase/SpatialHash.cs
View File

@ -33,8 +33,6 @@ namespace MoonTools.Core.Bonk
/// <param name="transform2D"></param> /// <param name="transform2D"></param>
public void Insert(T id, IShape2D shape, Transform2D transform2D) public void Insert(T id, IShape2D shape, Transform2D transform2D)
{ {
if (shape == null) { throw new ArgumentNullException(nameof(shape)); }
var box = shape.AABB(transform2D); var box = shape.AABB(transform2D);
var minHash = Hash(box.MinX, box.MinY); var minHash = Hash(box.MinX, box.MinY);
var maxHash = Hash(box.MaxX, box.MaxY); var maxHash = Hash(box.MaxX, box.MaxY);
@ -64,8 +62,6 @@ namespace MoonTools.Core.Bonk
/// </summary> /// </summary>
public IEnumerable<(T, IShape2D, Transform2D)> Retrieve(T id, IShape2D shape, Transform2D transform2D) public IEnumerable<(T, IShape2D, Transform2D)> Retrieve(T id, IShape2D shape, Transform2D transform2D)
{ {
if (shape == null) { throw new ArgumentNullException(paramName: nameof(shape)); }
AABB box = shape.AABB(transform2D); AABB box = shape.AABB(transform2D);
var minHash = Hash(box.MinX, box.MinY); var minHash = Hash(box.MinX, box.MinY);
var maxHash = Hash(box.MaxX, box.MaxY); var maxHash = Hash(box.MaxX, box.MaxY);