public static Vector3 CalcTileArrowOffset(Spine.Slot boundingSlot, Transform transform, float rotation,
float innerRate = 0.7f)
{
float radius = AngleHelper.AngleToRadius(rotation - 90);
Vector3 v = new Vector3(Mathf.Cos(radius), Mathf.Sin(radius)) * 10000;
Spine.BoundingBoxAttachment bounding = boundingSlot.Attachment as Spine.BoundingBoxAttachment;
float[] vertices = (float[])bounding.Vertices.Clone();
Vector2 p1 = new Vector2();
Vector2 p2 = new Vector2();
int n = vertices.Length / 2;
for (int i = 0; i <= n; ++i)
{
int m = i % n;
float localX = vertices[m * 2 + 0];
float localY = vertices[m * 2 + 1];
p2.Set(localX, localY);
if (i >= 1)
{
float intersectDist;
Vector2 intersectPoint;
if (GeometryHelper.CalcIntersectPoint(Vector2.zero, v, p1, p2, out intersectPoint, out intersectDist))
{
intersectPoint *= innerRate;
float worldX;
float worldY;
boundingSlot.Bone.localToWorld(intersectPoint.x, intersectPoint.y, out worldX, out worldY);
Vector3 offset = new Vector3(worldX, worldY, 0);
offset = transform.TransformPoint(offset);
return(offset);
}
}
p1 = p2;
}
Vector3 boneCenter = new Vector3(boundingSlot.Bone.WorldX, boundingSlot.Bone.WorldY, 0);
boneCenter = transform.TransformPoint(boneCenter);
return(boneCenter);
}