public static Mesh CreateTempMesh(string meshName)
{
var mesh = SgtObjectPool <Mesh> .Pop() ?? new Mesh();
mesh.name = meshName;
#if UNITY_EDITOR
mesh.hideFlags = HideFlags.DontSave;
#endif
return(mesh);
}
private Mesh GetMesh()
{
if (mesh == null)
{
mesh = SgtObjectPool <Mesh> .Pop() ?? new Mesh();
#if UNITY_EDITOR
mesh.hideFlags = HideFlags.DontSave;
#endif
mesh.name = "Terrain";
}
if (cachedMeshFilter == null)
{
cachedMeshFilter = GetComponent <MeshFilter>();
}
cachedMeshFilter.sharedMesh = mesh;
return(mesh);
}
private void Build(SgtTerrain terrain, Vector3 bestPoint)
{
if (meshCollider == null)
{
var gameObject = new GameObject("Plane");
#if UNITY_EDITOR
gameObject.hideFlags = HideFlags.DontSave;
#endif
meshCollider = gameObject.AddComponent <MeshCollider>();
}
if (mesh == null)
{
mesh = SgtObjectPool <Mesh> .Pop() ?? new Mesh();
#if UNITY_EDITOR
mesh.hideFlags = HideFlags.DontSave;
#endif
mesh.name = "Plane";
}
var sideE = Detail;
var sideP = Detail + 1;
var vertexCount = sideP * sideP;
var indexCount = sideE * sideE * 6;
var rotation = Quaternion.Inverse(terrain.transform.rotation) * Quaternion.LookRotation(bestPoint);
var distance = bestPoint.magnitude;
var uniformScale = SgtHelper.UniformScale(terrain.transform.lossyScale);
var size = Size * SgtHelper.Reciprocal(uniformScale);
var step = (size * 2.0f) / Detail;
if (positions == null || positions.Length != vertexCount)
{
positions = new Vector3[vertexCount];
}
for (var y = 0; y <= Detail; y++)
{
for (var x = 0; x <= Detail; x++)
{
var index = x + y * sideP;
var point = rotation * new Vector3(x * step - size, y * step - size, distance);
positions[index] = (Vector3)terrain.GetLocalPoint(new SgtVector3D(point));
}
}
// Regen indices?
if (indices == null || indices.Length != indexCount)
{
indices = new int[indexCount];
for (var y = 0; y < sideE; y++)
{
for (var x = 0; x < sideE; x++)
{
var index = (x + y * sideE) * 6;
var vertex = x + y * sideP;
indices[index + 0] = vertex;
indices[index + 1] = vertex + 1;
indices[index + 2] = vertex + sideP;
indices[index + 3] = vertex + sideP + 1;
indices[index + 4] = vertex + sideP;
indices[index + 5] = vertex + 1;
}
}
mesh.Clear();
}
mesh.vertices = positions;
mesh.triangles = indices;
meshCollider.sharedMesh = mesh;
meshCollider.transform.SetParent(terrain.transform, false);
}
