public static Bounds GetBounds(this GameObject go, GetBoundsMode mode = GetBoundsMode.CollidersAndRenderers)
{
Renderer[] renderers = go.GetComponentsInChildren <Renderer>();
Bounds bounds = new Bounds();
if (mode == GetBoundsMode.CollidersAndRenderers || mode == GetBoundsMode.OnlyRenderers)
{
for (int i = 0; i < renderers.Length; i++)
{
if (renderers[i].enabled && renderers[i].gameObject.activeInHierarchy)
{
if (bounds.extents == Vector3.zero)
{
bounds = renderers[i].bounds;
}
else
{
bounds.Encapsulate(renderers[i].bounds);
}
}
}
}
if (mode == GetBoundsMode.CollidersAndRenderers || mode == GetBoundsMode.OnlyColliders)
{
Collider[] colliders = go.GetComponentsInChildren <Collider>();
for (int i = 0; i < colliders.Length; i++)
{
if (colliders[i].enabled && colliders[i].gameObject.activeInHierarchy)
{
if (bounds.extents == Vector3.zero)
{
bounds = colliders[i].bounds;
}
else
{
bounds.Encapsulate(colliders[i].bounds);
}
}
}
}
return(bounds);
}
/// <summary>
/// Like BoundsProvider.GetBounds() but rotation, position or local scale won't affect the bounds.
/// (The transform of the object is modified temporarily)
/// </summary>
/// <param name="obj"></param>
/// <param name="mode"></param>
/// <param name="ignoreTriggerColliders"></param>
/// <param name="layerMask"></param>
/// <returns></returns>
public static Bounds GetLocalBounds(GameObject obj, GetBoundsMode mode = GetBoundsMode.Colliders, bool ignoreTriggerColliders = true, int layerMask = ~0)
{
var t = obj.transform;
var oPos = t.position;
var oRot = t.rotation;
var oScale = t.localScale;
t.position = Vector3.zero;
t.rotation = Quaternion.identity;
t.localScale = Vector3.one;
var b = GetBounds(obj, mode, ignoreTriggerColliders, layerMask);
t.position = oPos;
t.rotation = oRot;
t.localScale = oScale;
return(b);
}
/// <summary>
/// Get the bounds of the GameObject using collider and renderer bounds in all children. Avoid using this method heavily.
/// Renderers like ParticleSystems may cause undesired results.
/// </summary>
/// <param name="obj"></param>
/// <param name="mode"></param>
/// <param name="ignoreTriggerColliders"></param>
/// <param name="layerMask"></param>
/// <returns></returns>
public static Bounds GetBounds(GameObject obj, GetBoundsMode mode = GetBoundsMode.Colliders, bool ignoreTriggerColliders = true, int layerMask = ~0)
{
Bounds bounds = new Bounds();
if ((mode & GetBoundsMode.Colliders) != 0)
{
var cols = obj.GetComponentsInChildren <Collider>();
foreach (var col in cols)
{
if (ignoreTriggerColliders && col.isTrigger)
{
continue;
}
if ((1 << col.gameObject.layer & layerMask) == 0)
{
continue;
}
if (bounds.extents == Vector3.zero)
{
bounds = col.bounds;
}
bounds.Encapsulate(col.bounds);
}
}
if ((mode & GetBoundsMode.Renderers) != 0)
{
var rends = obj.GetComponentsInChildren <Renderer>();
foreach (var rend in rends)
{
if ((1 << rend.gameObject.layer & layerMask) == 0)
{
continue;
}
if (bounds.extents == Vector3.zero)
{
bounds = rend.bounds;
}
bounds.Encapsulate(rend.bounds);
}
}
return(bounds);
}
