void Awake()
{
myCamera = GetComponent <Camera>(); //keeps track of the camera component without needing to call GetComponent all the time
//if we're not playing, and we're in the inspector, we've got some initialization to do
if (!Application.isPlaying && Application.isEditor)
{
if (distanceMultiplier > 0)
{
defaultCullDistance = myCamera.farClipPlane / distanceMultiplier;
}
else
{
Debug.LogError("Distance multiplier is less than or equal to 0.");
}
oldDefaultCullDistance = defaultCullDistance; //sets up the mass editing of default culling planes
//fills up layerCullInfos[] with LayerCullInfo objects and sets the layer names appropriately
for (int index = 0; index < NUMBER_OF_UNITY_LAYERS; index++)
{
if (layerCullInfos[index] == null)
{
layerCullInfos[index] = new LayerCullInfo();
layerCullInfos[index].cullDistance = defaultCullDistance;
}
if (LayerMask.LayerToName(index) != "")
{
layerCullInfos[index].layerName = LayerMask.LayerToName(index);
}
else
{
layerCullInfos[index].layerName = "Layer Not Defined";
}
}
}
}
/// <summary>
/// Makes sure that all values are appropriate and valid.
/// Called automatically in the editor, and called by the AssignUpdatedValues coroutine at runtime.
/// </summary>
void OnValidate()
{
if (!myCamera)
{
myCamera = GetComponent <Camera>();
}
//makes sure there are always the right number of elements in the layerCullInfos array
if (layerCullInfos.Length != NUMBER_OF_UNITY_LAYERS)
{
LayerCullInfo[] newLayerCullInfos = new LayerCullInfo[NUMBER_OF_UNITY_LAYERS]; //when the above isn't true, we need to reset the array, but we want to save as much information as possible, so we create a temporary array
//store all salvageable data in the temporary array
for (int index = 0; index < layerCullInfos.Length; index++)
{
newLayerCullInfos[index].cullDistance = layerCullInfos[index].cullDistance;
}
//if the array was resized to be smaller than the correct size, fill the remaining slots in the temp array with the default value
for (int index = layerCullInfos.Length; index < NUMBER_OF_UNITY_LAYERS; index++)
{
newLayerCullInfos[index].cullDistance = defaultCullDistance;
}
layerCullInfos = newLayerCullInfos; //copy the temporary array into the regular array so that it now has the right number of elements again
}
//have to make sure that the default distance is not less than the near clip plane (since nothing should be culled closer than that)
if (defaultCullDistance < myCamera.nearClipPlane)
{
defaultCullDistance = myCamera.nearClipPlane + 0.01f; //roughly the smallest distance the far clip plane can be
}
//makes sure the cull distance for each layer isn't smaller than the near clip plane
foreach (LayerCullInfo cullInfo in layerCullInfos)
{
if (cullInfo.cullDistance < myCamera.nearClipPlane)
{
cullInfo.cullDistance = myCamera.nearClipPlane + 0.01f;
}
}
//Makes sure the distance multiplier won't make any of the cull distances smaller than the near clip plane
float nearestCullDistance = layerCullInfos[0].cullDistance;
foreach (LayerCullInfo cullInfo in layerCullInfos)
{
if (cullInfo.cullDistance < nearestCullDistance)
{
nearestCullDistance = cullInfo.cullDistance;
}
}
if (nearestCullDistance * distanceMultiplier < (myCamera.nearClipPlane + 0.01f))
{
distanceMultiplier = (myCamera.nearClipPlane + 0.01f) / nearestCullDistance;
}
//Makes sure that all distances set to the old default are updated if the default has been changed.
//Used to automatically update the array in any places that are just using the default
foreach (LayerCullInfo cullInfo in layerCullInfos)
{
if (cullInfo.cullDistance == oldDefaultCullDistance)
{
cullInfo.cullDistance = defaultCullDistance;
}
}
//searches the array for the furthest distance
//culling distances cannot be set to a value larger than the far clip plane on the camera, so we increase the far clip plane to match
float furthestCullDistance = layerCullInfos[0].cullDistance;
foreach (LayerCullInfo cullInfo in layerCullInfos)
{
if (cullInfo.cullDistance > furthestCullDistance)
{
furthestCullDistance = cullInfo.cullDistance;
}
}
myCamera.farClipPlane = furthestCullDistance * distanceMultiplier;
oldDefaultCullDistance = defaultCullDistance; //stores the current default for comparison's sake if a change is made
}
