public static bool BoundSpereInCamera_UseMVP(SoftSpere spere, SoftCamera camera)
{
Vector3 localPt = camera.WorldToViewportPoint(spere.position, false);
float left = localPt.x - spere.radius;
float right = localPt.x + spere.radius;
if (right <= -1 || left >= 1)
{
return(false);
}
float top = localPt.y + spere.radius;
float bottom = localPt.y - spere.radius;
if (bottom >= 1 || top <= -1)
{
return(false);
}
float front = localPt.z + spere.radius;
float back = localPt.z - spere.radius;
if (back >= 1 || front <= -1)
{
return(false);
}
return(true);
}
// 摄影机剔除
// visiableList: 可见列表
public void CameraCull(SoftCamera camera, Dictionary <int, SoftRenderObject> objs, out NativeList <int> visiableList)
{
visiableList = null;
if (camera == null)
{
return;
}
if (objs == null || objs.Count <= 0)
{
m_Objs.Clear(false);
return;
}
m_Objs.Clear(false);
// 简单处理，直接干
var iter = objs.GetEnumerator();
while (iter.MoveNext())
{
SoftRenderObject obj = iter.Current.Value;
if (obj != null && obj.CanRenderer)
{
switch (obj.ObjType)
{
case SoftRenderObjType.MeshRender:
SoftSpere spere = (obj as SoftMeshRenderer).WorldBoundSpere;
// if (!camera.IsOpenCameraSpereCull || SoftMath.BoundSpereInCamera(spere, camera)) {
if (!camera.IsOpenCameraSpereCull || SoftMath.BoundSpereInCamera_UseMVP(spere, camera))
{
m_Objs.Add(obj.InstanceId);
}
break;
}
}
}
iter.Dispose();
if (m_Objs.Count > 0)
{
visiableList = m_Objs;
}
}