public static Mesh CreateTree(int vertCount, float radius, float height, int subdivisions, float variance, int branchCount)
{
var meshGen = new MeshGenerator();
var armature = CreateArmature(subdivisions, height, variance);
var branches = CreateBranches(branchCount, armature);
armature.branches = branches;
Armature = armature;
// Trunk
{
// Create trunk edge loops
var edgeloops = new List <List <Vector3> >(armature.trunkVertices.Count);
for (var i = 0; i < armature.trunkVertices.Count; i++)
{
var circle = CreateCircle(vertCount, radius * Mathf.Sqrt(1 - (float)i / subdivisions), armature.trunkVertices[i]);
edgeloops.Add(circle);
meshGen.AddVertices(circle);
}
// Bridge trunk edge loops
for (var i = 0; i < subdivisions; i++)
{
meshGen.BridgeEdgeLoops(edgeloops[i], edgeloops[i + 1]);
}
}
// Branches
{
foreach (var branch in branches)
{
var divisions = branch.branchVertices.Count - 1;
var edgeloops = new List <List <Vector3> >(branch.branchVertices.Count);
for (var i = 0; i < branch.branchVertices.Count; i++)
{
var branchPointRadius = radius * Mathf.Sqrt(1 - (float)branch.branchVertexIndex / subdivisions);
var circle = CreateCircle(vertCount, branchPointRadius * .7f * Mathf.Sqrt(1 - (float)i / divisions), branch.branchVertices[i]);
Vector3 rotationDir;
if (i == 0 || i == branch.branchVertices.Count - 1)
{
rotationDir = branch.branchVertices[i];
}
else
{
rotationDir = branch.branchVertices[i - 1] + branch.branchVertices[i];
}
circle.RotateVertices(branch.branchVertices[i], Quaternion.LookRotation(rotationDir, Vector3.down));
edgeloops.Add(circle);
meshGen.AddVertices(circle);
}
// Bridge edge loops
for (var i = 0; i < divisions; i++)
{
meshGen.BridgeEdgeLoops(edgeloops[i], edgeloops[i + 1]);
}
}
}
var mesh = meshGen.GetMesh("Tree");
mesh.RecalculateNormals();
return(mesh);
}