void LateUpdateBounds()
{
// make sure we're at sea level. we will expand the bounds which only works at sea level
float y = transform.position.y;
if (!Mathf.Approximately(y, OceanRenderer.Instance.SeaLevel))
{
transform.position += (OceanRenderer.Instance.SeaLevel - y) * Vector3.up;
}
var bounds = _boundsLocal;
OceanChunkRenderer.ExpandBoundsForDisplacements(transform, ref bounds);
_mesh.bounds = bounds;
if (_drawBounds)
{
OceanChunkRenderer.DebugDrawRendererBounds(_rend);
}
}
GameObject CreateLOD(int lodIndex, bool biggestLOD, Mesh[] meshData, Params parms)
{
// first create parent gameobject for the lod level. the scale of this transform sets the size of the lod.
string lodParentName = "LOD" + lodIndex;
// if it exists already, destroy it so it can be created fresh
Transform parentTransform = transform.Find(lodParentName);
if (parentTransform != null)
{
DestroyImmediate(parentTransform.gameObject);
parentTransform = null;
}
GameObject parent = new GameObject();
parent.name = "LOD" + lodIndex;
parent.transform.parent = transform;
parent.transform.localPosition = Vector3.zero;
parent.transform.localRotation = Quaternion.identity;
// add a shape camera below it
_shapeCameras[lodIndex].transform.parent = parent.transform;
_shapeCameras[lodIndex].transform.localScale = Vector3.one;
_shapeCameras[lodIndex].transform.localPosition = Vector3.zero;
bool generateSkirt = parms._generateSkirt && biggestLOD;
Vector2[] offsets;
PatchType[] patchTypes;
PatchType leadSideType = generateSkirt ? PatchType.FatXOuter : PatchType.SlimX;
PatchType trailSideType = generateSkirt ? PatchType.FatXOuter : PatchType.FatX;
PatchType leadCornerType = generateSkirt ? PatchType.FatXZOuter : PatchType.SlimXZ;
PatchType trailCornerType = generateSkirt ? PatchType.FatXZOuter : PatchType.FatXZ;
PatchType tlCornerType = generateSkirt ? PatchType.FatXZOuter : PatchType.SlimXFatZ;
PatchType brCornerType = generateSkirt ? PatchType.FatXZOuter : PatchType.FatXSlimZ;
if (lodIndex != 0)
{
// instance indices:
// 0 1 2 3
// 4 5
// 6 7
// 8 9 10 11
offsets = new Vector2[] {
new Vector2(-1.5f, 1.5f), new Vector2(-0.5f, 1.5f), new Vector2(0.5f, 1.5f), new Vector2(1.5f, 1.5f),
new Vector2(-1.5f, 0.5f), new Vector2(1.5f, 0.5f),
new Vector2(-1.5f, -0.5f), new Vector2(1.5f, -0.5f),
new Vector2(-1.5f, -1.5f), new Vector2(-0.5f, -1.5f), new Vector2(0.5f, -1.5f), new Vector2(1.5f, -1.5f),
};
// usually rings have an extra side of verts that point inwards. the outermost ring has both the inward
// verts and also and additional outwards set of verts that go to the horizon
patchTypes = new PatchType[] {
tlCornerType, leadSideType, leadSideType, leadCornerType,
trailSideType, leadSideType,
trailSideType, leadSideType,
trailCornerType, trailSideType, trailSideType, brCornerType,
};
}
else
{
// first LOD has inside bit as well:
// 0 1 2 3
// 4 5 6 7
// 8 9 10 11
// 12 13 14 15
offsets = new Vector2[] {
new Vector2(-1.5f, 1.5f), new Vector2(-0.5f, 1.5f), new Vector2(0.5f, 1.5f), new Vector2(1.5f, 1.5f),
new Vector2(-1.5f, 0.5f), new Vector2(-0.5f, 0.5f), new Vector2(0.5f, 0.5f), new Vector2(1.5f, 0.5f),
new Vector2(-1.5f, -0.5f), new Vector2(-0.5f, -0.5f), new Vector2(0.5f, -0.5f), new Vector2(1.5f, -0.5f),
new Vector2(-1.5f, -1.5f), new Vector2(-0.5f, -1.5f), new Vector2(0.5f, -1.5f), new Vector2(1.5f, -1.5f),
};
// all interior - the "side" types have an extra skirt that points inwards - this means that this inner most
// section doesn't need any skirting. this is good - this is the highest density part of the mesh.
patchTypes = new PatchType[] {
tlCornerType, leadSideType, leadSideType, leadCornerType,
trailSideType, PatchType.Interior, PatchType.Interior, leadSideType,
trailSideType, PatchType.Interior, PatchType.Interior, leadSideType,
trailCornerType, trailSideType, trailSideType, brCornerType,
};
}
// debug toggle to force all patches to be the same. they'll be made with a surrounding skirt to make sure patches
// overlap
if (parms._forceUniformPatches)
{
for (int i = 0; i < patchTypes.Length; i++)
{
patchTypes[i] = PatchType.Fat;
}
}
// create the ocean patches
for (int i = 0; i < offsets.Length; i++)
{
// instantiate and place patch
Transform inst = Instantiate(_chunkPrefab) as Transform;
inst.parent = parent.transform;
Vector2 pos = offsets[i];
inst.localPosition = new Vector3(pos.x, 0f, pos.y);
inst.localScale = Vector3.one;
OceanChunkRenderer ocr = inst.GetComponent <OceanChunkRenderer>();
ocr.SetInstanceData(lodIndex, parms._lodCount, parms._baseVertDensity);
inst.GetComponent <MeshFilter>().mesh = meshData[(int)patchTypes[i]];
// rotate side patches to point the +x side outwards
bool rotateXOutwards = patchTypes[i] == PatchType.FatX || patchTypes[i] == PatchType.FatXOuter || patchTypes[i] == PatchType.SlimX || patchTypes[i] == PatchType.SlimXFatZ;
if (rotateXOutwards)
{
if (Mathf.Abs(pos.y) >= Mathf.Abs(pos.x))
{
inst.localEulerAngles = -Vector3.up * 90f * Mathf.Sign(pos.y);
}
else
{
inst.localEulerAngles = pos.x < 0f ? Vector3.up * 180f : Vector3.zero;
}
}
// rotate the corner patches so the +x and +z sides point outwards
bool rotateXZOutwards = patchTypes[i] == PatchType.FatXZ || patchTypes[i] == PatchType.SlimXZ || patchTypes[i] == PatchType.FatXSlimZ || patchTypes[i] == PatchType.FatXZOuter;
if (rotateXZOutwards)
{
// xz direction before rotation
Vector3 from = new Vector3(1f, 0f, 1f).normalized;
// target xz direction is outwards vector given by local patch position - assumes this patch is a corner (checked below)
Vector3 to = inst.localPosition.normalized;
if (Mathf.Abs(inst.localPosition.x) < 0.0001f || Mathf.Abs(Mathf.Abs(inst.localPosition.x) - Mathf.Abs(inst.localPosition.z)) > 0.001f)
{
Debug.LogWarning("Skipped rotating a patch because it isn't a corner, click here to highlight.", inst);
continue;
}
// detect 180 degree rotations as it doesnt always rotate around Y
if (Vector3.Dot(from, to) < -0.99f)
{
inst.localEulerAngles = Vector3.up * 180f;
}
else
{
inst.localRotation = Quaternion.FromToRotation(from, to);
}
}
}
return(parent);
}