public void TestDisplayRenderNodes()
{
GameObject parent = new GameObject();
parent.transform.position = default;
for (int i = 0; i < RenderNodes.Length; i++)
{
RenderNode node = RenderNodes[i];
Mesh mesh = QuadTerrainConfig.Instance.GetMesh(node.MeshType);
GameObject go = Instantiate(TestPrefab);
go.transform.SetParent(parent.transform);
MeshFilter filter = go.GetComponent <MeshFilter>();
filter.sharedMesh = mesh;
go.transform.localPosition = node.WorldPosition;
go.transform.localScale = node.WorldScale;
}
}
public void GetRenderNodes(QuadTree tree, NativeList <RenderNode> renderNodes, NativeArray <float4> planes)
{
NativeList <int> results = new NativeList <int>(Allocator.Temp);
var nodes = tree.Nodes;
for (int i = 0; i < nodes.Length; i++)
{
Node node = nodes[i];
if (!node.IsLeaf)
{
continue;
}
NodeBounds bounds = node.Bounds;
bounds.Expand(2f);
float2 center = bounds.Center;
float2 extents = bounds.Extents;
Bounds frustumBounds = new Bounds();
frustumBounds.center = new Vector3(center.x, 0f, center.y);
frustumBounds.extents = new Vector3(extents.x, 1000f, extents.y);
var intersectResult = FrustumPlanes2.Intersect(planes, frustumBounds);
if (intersectResult == FrustumPlanes2.IntersectResult.Out)
{
continue;
}
tree.FindOverlapping(bounds, results);
NodeSides sides = default;
for (int j = 0; j < results.Length; j++)
{
int otherId = results[j];
if (otherId == i)
{
continue;
}
Node other = nodes[otherId];
// only smaller neighbors set different edges
if (!(node.Bounds.Size.x + 1 < other.Bounds.Size.x))
{
continue;
}
if (IsLeft(node.Bounds, other.Bounds))
{
sides.Left = true;
}
else if (IsRight(node.Bounds, other.Bounds))
{
sides.Right = true;
}
else if (IsForward(node.Bounds, other.Bounds))
{
sides.Forward = true;
}
else if (IsBack(node.Bounds, other.Bounds))
{
sides.Back = true;
}
}
results.Clear();
RenderNode renderNode = new RenderNode
{
Node = node,
MeshType = sides.GetMeshType()
};
renderNodes.Add(renderNode);
}
}