private static NodeOut CreateNode(Vector3 origin, Quaternion rotation, float minNodesAngle, float maxNodesAngle, int maxNodesCountPerLevel, float scale, int iterations, float scaleDescendant, bool addLeaves, List<VEngine.Mesh3d.Bone> boneSystem = null, VEngine.Mesh3d.Bone boneParent = null)
{
List<Mesh3d> elements = new List<Mesh3d>();
List<Mesh3d> leafs = new List<Mesh3d>();
float nodeModelHeight = Node.GetAxisAlignedBox().Y * scale;
var currentBone = new Mesh3d.Bone();
if(boneSystem != null)
{
currentBone = new Mesh3d.Bone()
{
Head = origin,
Tail = origin + Vector3.Transform(Vector3.UnitY * nodeModelHeight, rotation),
Name = boneParent.Name == "rootofroot" ? "root" : "bone" + boneSystem.Count.ToString(),
Orientation = Quaternion.Identity,
Parent = boneParent,
ParentName = boneParent.Name
};
}
if(iterations > 1)
{
var root = new Mesh3d(Node, NodeMaterial);
root.Translate(origin);
root.Scale(scale);
root.Rotate(rotation);
elements.Add(root);
if(boneSystem != null)
{
boneSystem.Add(currentBone);
}
}
Vector3 direction = rotation.ToDirection(Vector3.UnitY);
Vector3 tgLeft = rotation.ToDirection(Vector3.UnitZ);
if(iterations > 0)
{
for(int i = 0; i < maxNodesCountPerLevel; i++)
{
var randomOrigin = origin + (direction * nodeModelHeight * (Rand() * 0.5f + 0.5f));
float sign1 = Rand() > 0.5f ? -1 : 1;
float angle = Mix(minNodesAngle, maxNodesAngle, Rand()) * sign1;
var rotLeft = Quaternion.FromAxisAngle(tgLeft, angle);
var rotForward = Quaternion.FromAxisAngle(direction, MathHelper.TwoPi * Rand());
var randomRotation = Quaternion.Multiply(rotForward, Quaternion.Multiply(rotLeft, rotation));
var single = CreateNode(randomOrigin, randomRotation, minNodesAngle, maxNodesAngle, maxNodesCountPerLevel, scale * (Rand() * 0.2f + scaleDescendant), iterations - 1, scaleDescendant, addLeaves, boneSystem, currentBone);
elements.AddRange(single.Nodes);
leafs.AddRange(single.Leafs);
}
}
if(iterations < 2 && addLeaves)
{
for(int i = 0; i < 12; i++)
{
var randomOrigin = origin + (direction * nodeModelHeight * (Rand()));
randomOrigin += (new Vector3(Rand(), Rand(), Rand()) - new Vector3(0.5f)) * 1.0f;
float sign1 = Rand() > 0.5f ? -1 : 1;
float angle = Mix(minNodesAngle, maxNodesAngle, Rand()) * sign1;
var rotLeft = Quaternion.FromAxisAngle(tgLeft, angle);
var rotForward = Quaternion.FromAxisAngle(direction, MathHelper.TwoPi * Rand());
var randomRotation = Quaternion.Multiply(rotForward, Quaternion.Multiply(rotLeft, rotation));
var leaf = new Mesh3d(Leaf, LeafMaterial);
leaf.Translate(randomOrigin);
leaf.Scale(Rand() * 1.5f + 0.4f);
leaf.Rotate(randomRotation);
leafs.Add(leaf);
}
}
return new NodeOut()
{
Nodes = elements,
Leafs = leafs
};
}
