public static void DuplicateSelected()
{
IEnumerable <GameObject> selectedObjs = Selection.GetFiltered(typeof(GameObject),
SelectionMode.Editable |
SelectionMode.TopLevel |
SelectionMode.ExcludePrefab).Cast <GameObject>();
List <GameObject> newObjs = new List <GameObject>();
foreach (GameObject go in selectedObjs)
{
TreeCurve tc = go.GetComponent <TreeCurve>();
if (tc == null)
{
Debug.LogWarning("Selected object \"" + go.name + "\" isn't a tree and was ignored.");
continue;
}
Transform tr = go.transform;
GameObject go2 = GameObject.Instantiate <GameObject>(go);
go2.name = go.name + " 2";
newObjs.Add(go2);
Transform tr2 = go2.transform;
tr2.position = tr.position;
tr2.rotation = tr.rotation;
tr2.localScale = tr.localScale;
//Remove the reference to the original object's trunk/foliage meshes.
foreach (TreeCurve tc2 in go2.GetComponentsInChildren <TreeCurve>().ToArray())
{
tc2.GetComponent <MeshFilter>().sharedMesh = null;
tc2.OnValidate();
}
foreach (CurveFoliage cf in go2.GetComponentsInChildren <CurveFoliage>().ToArray())
{
cf.GetComponent <MeshFilter>().sharedMesh = null;
cf.OnValidate();
}
}
//Select the duplicates.
Selection.objects = newObjs.ToArray();
}
/// <summary>
/// Re-generates the foliage mesh.
/// </summary>
public void OnValidate()
{
//Make sure inputs are sane.
VerticalAngle = Mathf.Clamp01(VerticalAngle);
VerticalAngleVariance = Mathf.Max(0.0f, VerticalAngleVariance);
MinPieces = Mathf.Max(MinPieces, 0);
MaxPieces = Mathf.Max(MaxPieces, MinPieces);
SpawnDistribution = Mathf.Max(0.00001f, SpawnDistribution);
MinSpawnLength = Mathf.Clamp01(MinSpawnLength);
MinSize = Mathf.Max(0.0f, MinSize);
MaxSize = Mathf.Max(MinSize, MaxSize);
if (myMF == null)
{
myMF = GetComponent <MeshFilter>();
}
TreeCurve tc = transform.parent.GetComponent <TreeCurve>();
Vector3[] preC = tc.Curve.PreCalculateValues();
Rand.seed = Seed;
//Calculate the position, normal/tangent, and size of each foliage quad.
List <Piece> pieces = new List <Piece>();
int nPieces = Rand.Range(MinPieces, MaxPieces);
pieces.Capacity = nPieces;
for (int i = 0; i < nPieces; ++i)
{
float t = Mathf.Lerp(MinSpawnLength, 1.0f,
Mathf.Pow(Rand.value, SpawnDistribution));
var posAndDerivative = tc.Curve.GetValueAndDerivative(t, preC);
posAndDerivative.Derivative.Normalize();
Vector3 perp = posAndDerivative.Perpendicular.normalized;
float sizeF = Rand.Range(MinSize, MaxSize);
Vector2 size = new Vector2(sizeF, sizeF);
Vector3 curveNormal = Quaternion.AngleAxis(Rand.Range(5.0f, 355.0f),
posAndDerivative.Derivative) * perp;
curveNormal = new Vector3(curveNormal.x, 0.0f, curveNormal.z).normalized;
Piece p = new Piece();
p.Pos = posAndDerivative.Value + (size.y * 0.5f * curveNormal);
p.Normal = Vector3.Cross(curveNormal, new Vector3(0.0f, 1.0f, 0.0f)).normalized;
float angle = Mathf.Lerp(-90.0f, 90.0f,
VerticalAngle + Rand.Range(-VerticalAngleVariance,
VerticalAngleVariance));
p.Normal = Quaternion.AngleAxis(angle, curveNormal) * p.Normal;
p.Tangent = curveNormal;
p.Size = size;
pieces.Add(p);
}
//Convert the "pieces" list into a mesh.
if (MyMesh == null)
{
MyMesh = new Mesh();
}
else
{
MyMesh.Clear();
}
switch (Mode)
{
case MeshModes.Point:
MyMesh.vertices = pieces.Select(p => p.Pos).ToArray();
MyMesh.normals = pieces.Select(p => p.Normal).ToArray();
MyMesh.tangents = pieces.Select(p =>
{
return(new Vector4(p.Tangent.x, p.Tangent.y, p.Tangent.z, 1.0f));
}).ToArray();
MyMesh.uv = pieces.Select(p => p.Size).ToArray();
int i = -1;
MyMesh.SetIndices(pieces.Select(p => { i += 1; return(i); }).ToArray(),
MeshTopology.Points, 0);
break;
case MeshModes.Quad:
Vector3[] poses = new Vector3[pieces.Count * 4],
normals = new Vector3[pieces.Count * 4];
Vector4[] tangents = new Vector4[pieces.Count * 4];
Vector2[] uvs = new Vector2[pieces.Count * 4];
int[] indices = new int[pieces.Count * 6];
for (int j = 0; j < pieces.Count; ++j)
{
Piece p = pieces[j];
Vector3 bitangent = Vector3.Cross(p.Normal, p.Tangent).normalized;
Vector3 deltaX = 0.5f * p.Tangent * p.Size.y,
deltaY = 0.5f * bitangent * p.Size.x;
int vIndex = j * 4,
iIndex = j * 6;
poses[vIndex] = p.Pos + (-deltaX + -deltaY);
uvs[vIndex] = new Vector2(0.0f, 0.0f);
poses[vIndex + 1] = p.Pos + (deltaX + -deltaY);
uvs[vIndex + 1] = new Vector2(1.0f, 0.0f);
poses[vIndex + 2] = p.Pos + (-deltaX + deltaY);
uvs[vIndex + 2] = new Vector2(0.0f, 1.0f);
poses[vIndex + 3] = p.Pos + (deltaX + deltaY);
uvs[vIndex + 3] = new Vector2(1.0f, 1.0f);
normals[vIndex] = p.Normal;
normals[vIndex + 1] = p.Normal;
normals[vIndex + 2] = p.Normal;
normals[vIndex + 3] = p.Normal;
Vector4 tang = new Vector4(p.Tangent.x, p.Tangent.y, p.Tangent.z, 1.0f);
tangents[vIndex] = tang;
tangents[vIndex + 1] = tang;
tangents[vIndex + 2] = tang;
tangents[vIndex + 3] = tang;
indices[iIndex] = vIndex;
indices[iIndex + 1] = vIndex + 1;
indices[iIndex + 2] = vIndex + 3;
indices[iIndex + 3] = vIndex;
indices[iIndex + 4] = vIndex + 3;
indices[iIndex + 5] = vIndex + 2;
}
MyMesh.vertices = poses;
MyMesh.normals = normals;
MyMesh.tangents = tangents;
MyMesh.uv = uvs;
MyMesh.SetIndices(indices, MeshTopology.Triangles, 0);
break;
default: throw new NotImplementedException(Mode.ToString());
}
MyMesh.UploadMeshData(false);
}
private static void AddBranchTo(TreeCurve root, TreeCurve toCopy)
{
GameObject go = new GameObject("Branch");
TreeCurve tc = go.AddComponent<TreeCurve>();
tc.DrawCurveGizmo = false;
tc.Curve = new Curve(toCopy.Curve.Points.ToList());
tc.RadiusAlongCurve = new AnimationCurve(toCopy.RadiusAlongCurve.keys.ToArray());
tc.RadiusAroundCurve = new AnimationCurve(toCopy.RadiusAroundCurve.keys.ToArray());
tc.RadiusVarianceAlongCurve = new AnimationCurve(toCopy.RadiusVarianceAlongCurve.keys.ToArray());
if (root == toCopy)
{
tc.RadiusScale = toCopy.RadiusScale * 0.5f;
}
else
{
tc.RadiusScale = toCopy.RadiusScale;
}
tc.CurveDivisionsAlong = toCopy.CurveDivisionsAlong;
tc.CurveDivisionsAround = toCopy.CurveDivisionsAround;
tc.OnValidate();
MeshRenderer mrOld = toCopy.GetComponent<MeshRenderer>();
if (mrOld != null)
{
MeshRenderer mr = go.AddComponent<MeshRenderer>();
mr.sharedMaterial = mrOld.sharedMaterial;
}
//Add a mesh collider for ray-casting.
myMC = root.GetComponent<MeshCollider>();
if (myMC == null)
{
myMC = root.gameObject.AddComponent<MeshCollider>();
}
//Set the scale to be equal to the copy, or half of the copy if the copy is also the root.
NewBranch = go.transform;
NewBranch.localScale = toCopy.transform.localScale;
NewBranch.parent = root.transform;
}
