/// <summary>
/// 射线
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <returns></returns>
public IEnumerable <MGFObject> RayCast2D(Fix64Vector2 start, Fix64Vector2 end)
{
HashSet <MGFObject> ls = new HashSet <MGFObject>();
foreach (var item in m_Objects)
{
Fix64Vector2 hit;
Fix64Vector2[] vertex = item.GetVertex();
Fix64Vector2[] vertexN = new Fix64Vector2[vertex.Length];
for (int j = 0; j < vertexN.Length; j++)
{
vertexN[j] = vertex[j] + item.GetPos();
}
for (int j = 0; j < 4; j++)
{
int nt = j + 1;
if (j == 3)
{
nt = 0;
}
if (MGFPhysics.lineIntersection(start, end, vertexN[j], vertexN[nt], out hit))
{
Debug.Log(item.name + " line P1" + vertexN[j] + " P2 " + vertexN[nt] + " hit " + hit);
ls.Add(item);
break;
}
}
}
return(ls);
}
/// <summary>
/// 射线
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <returns></returns>
public List <MGFObject> RayCast2D(Fix64Vector2 start, Fix64Vector2 end)
{
List <MGFObject> ls = new List <MGFObject>();
for (int i = 0; i < m_Objects.Count; i++)
{
Fix64Vector2 hit;
Fix64Vector2[] vertex = m_Objects[i].GetVertex();
Fix64Vector2[] vertexN = new Fix64Vector2[vertex.Length];
for (int j = 0; j < vertexN.Length; j++)
{
vertexN[j] = vertex[j] + m_Objects[i].GetPos();
}
for (int j = 0; j < 4; j++)
{
int nt = j + 1;
if (j == 3)
{
nt = 0;
}
if (MGFPhysics.lineIntersection(start, end, vertexN[j], vertexN[nt], out hit))
{
Debug.Log(m_Objects[i].name + " line P1" + vertexN[j] + " P2 " + vertexN[nt] + " hit " + hit);
ls.Add(m_Objects[i]);
break;
}
}
}
return(ls);
}