無法將類型'System.Collections.Generic.List'隱式轉換爲'FarseerPhysics.Dynamics.Fixture'

Question

當我嘗試將燈具附加到主體時，我總是在此行中收到此錯誤消息。

Fixture Newfixture = FixtureFactory.AttachCompoundPolygon(list, 1.0f, TestBody); 

無法隱式轉換類型「System.Collections.Generic.List」到「FarseerPhysics.Dynamics.Fixture」

如何創建一個夾具和其附加到身體？是否有可能將多個固定裝置連接到身體上？

我的代碼的其餘部分：

List<Vertices> list = new List<Vertices>(); 
Vector2 _origin; 
float _scale; 

uint[] data = new uint[Sprite.Width * Sprite.Height]; 
Sprite.GetData(data); 
Vertices textureVertices = PolygonTools.CreatePolygon(data, Sprite.Width, false); 
Vector2 centroid = -textureVertices.GetCentroid(); 
textureVertices.Translate(ref centroid); 
_origin = -centroid; 
textureVertices = SimplifyTools.ReduceByDistance(textureVertices, 4f); 
list = Triangulate.ConvexPartition(textureVertices, TriangulationAlgorithm.Bayazit); 
_scale = 1f; 
Vector2 vertScale = new Vector2(ConvertUnits.ToSimUnits(1)) * _scale; 
foreach (Vertices vertices in list) 
{ 
    vertices.Scale(ref vertScale); 
} 

Answer 1

Fixture Newfixture = FixtureFactory.AttachCompoundPolygon(list, 1.0f, TestBody); 

這行代碼返回List<Fixture> 下面是從FixtureFactory源代碼的方法簽名。

public static List<Fixture> AttachCompoundPolygon(List<Vertices> list, float density, Body body) 

所以你得到一個List<Fixture>回來。如果你想在該列表中的第一項（這可能是這樣，因爲你假設有希望只有一個），然後

Fixture Newfixture = FixtureFactory.AttachCompoundPolygon(list, 1.0f, TestBody).First();