/// <summary>
/// 绘制形状
/// </summary>
/// <param name="shape"></param>
/// <param name="_cachedVertices"></param>
public static void RenderShape(Shape shape, Vector2[] _cachedVertices)
{
var numVertices = 0;
switch (shape.ShapeType)
{
case ShapeType.AABB:
numVertices = 4;
ShapeMath2D.GetVerticesAABB(shape.AABBMin, shape.AABBMax, _cachedVertices);
break;
case ShapeType.Circle:
Gizmos.DrawWireSphere(shape.Center, shape.CircleRadius);
return;
case ShapeType.Polygon:
numVertices = shape.PolygonVertices.Count;
Array.Copy(shape.PolygonVertices.ToArray(), _cachedVertices, shape.PolygonVertices.Count);
break;
}
for (var i = 0; i < numVertices; i++)
{
var nextIndex = (i + 1) % numVertices;
Gizmos.DrawLine(_cachedVertices[i], _cachedVertices[nextIndex]);
}
}
/// <summary>
/// 检测相交
/// </summary>
/// <param name="otherShape"></param>
/// <returns></returns>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public bool Intersects(Shape otherShape)
{
switch (ShapeType)
{
case ShapeType.AABB:
switch (otherShape.ShapeType)
{
case ShapeType.AABB:
return(ShapeMath2D.AABBIntersectsAABB(AABBMin, AABBMax, otherShape.AABBMin, otherShape.AABBMax));
case ShapeType.Circle:
return(ShapeMath2D.CircleIntersectsAABB(otherShape.Center, otherShape.CircleRadius,
AABBMin, AABBMax));
case ShapeType.Polygon:
return(ShapeMath2D.PolygonIntersectsAABB(otherShape.PolygonVertices.ToArray(), AABBMin, AABBMax));
default:
throw new ArgumentOutOfRangeException();
}
case ShapeType.Circle:
switch (otherShape.ShapeType)
{
case ShapeType.AABB:
return(ShapeMath2D.CircleIntersectsAABB(Center, CircleRadius, otherShape.AABBMin, otherShape.AABBMax));
case ShapeType.Circle:
return(ShapeMath2D.CircleIntersectsCircle(Center, CircleRadius, otherShape.Center, otherShape.CircleRadius));
case ShapeType.Polygon:
return(ShapeMath2D.PolygonIntersectsCircle(otherShape.PolygonVertices.ToArray(), Center, CircleRadius));
default:
throw new ArgumentOutOfRangeException();
}
case ShapeType.Polygon:
switch (otherShape.ShapeType)
{
case ShapeType.AABB:
return(ShapeMath2D.PolygonIntersectsAABB(PolygonVertices.ToArray(), otherShape.AABBMin, otherShape.AABBMax));
case ShapeType.Circle:
return(ShapeMath2D.PolygonIntersectsCircle(PolygonVertices.ToArray(), otherShape.Center, otherShape.CircleRadius));
case ShapeType.Polygon:
return(ShapeMath2D.PolygonIntersectsPolygon(PolygonVertices.ToArray(), otherShape.PolygonVertices.ToArray()));
default:
throw new ArgumentOutOfRangeException();
}
default:
throw new ArgumentOutOfRangeException();
}
}
/// <summary>
/// 检测包含点
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public bool ContainPoint(Vector2 point)
{
switch (ShapeType)
{
case ShapeType.AABB:
return(ShapeMath2D.AABBContainsPoint(AABBMin, AABBMax, point));
case ShapeType.Circle:
return(ShapeMath2D.CircleContainsPoint(Center, CircleRadius, point));
case ShapeType.Polygon:
return(ShapeMath2D.PolygonContainsPoint(PolygonVertices.ToArray(), point));
default:
break;
}
return(false);
}
/// <summary>
/// X轴翻折
/// </summary>
public void FlipX()
{
switch (ShapeType)
{
case ShapeType.AABB:
Vector2 min;
Vector2 max;
ShapeMath2D.AABBFlipX(AABBMin, AABBMax, out min, out max);
AABBMin = min;
AABBMax = max;
break;
case ShapeType.Circle:
Center = new Vector2(Center.x * -1, Center.y);
break;
case ShapeType.Polygon:
Debug.LogError("多边形需要旋转>>>>>>");
break;
default:
break;
}
}