Unigine.NodeLayer Class
| Inherits from: | Node |
A layer node is a zero-sized node that has no visual representation and enables to save all its child nodes into a separate .node file. Layer nodes should be used to split the world into several logical parts and save each of them in a .node file so that each layer and its child nodes can be edited without affecting the source .world file.
Notice
The layer node itself is not stored in the .node file.
Creating a Layer#
Create an instance of the NodeLayer class. You can also specify such settings as a name, transformation and so on.
NodeLayerClass.cs
Source code (C#)
using System;
using System.Collections;
using System.Collections.Generic;
using Unigine;
[Component(PropertyGuid = "ca7e3fdc0ec5d98b0fbb616e3582b9f5331702d0")]
public class NodeLayerClass : Component
{
private void Init()
{
// create a layer node
NodeLayer layer = new NodeLayer("nodes/layer_0.node");
// set a name for the node
layer.Name = "layer_0";
return 1;
}
}
}Editing a Layer#
Editing a layer node includes adding, deleting, modifying its child nodes. For example, you can add new nodes as follows:
NodeLayerClass.cs
Source code (C#)
using System;
using System.Collections;
using System.Collections.Generic;
using Unigine;
[Component(PropertyGuid = "ca7e3fdc0ec5d98b0fbb616e3582b9f5331702d0")]
public class NodeLayerClass : Component
{
private void Init()
{
// create a layer node
NodeLayer layer = new NodeLayer("nodes/layer_0.node");
// set a name for the node
layer.Name = "layer_0";
// create child nodes
for (int y = -10; y <= 10; y++)
{
for (int x = -10; x <= 10; x++)
{
// create a mesh
Mesh mesh = new Mesh();
mesh.AddBoxSurface("box_0", new vec3(1.0f));
// create a node (e.g. an instance of the ObjectMeshDynamic class)
ObjectMeshDynamic node = new ObjectMeshDynamic(mesh);
// set node transformation
node. WorldTransform = MathLib.Translate(new vec3(x * 2.0f, y * 2.0f, 0.0f));
// set a name for the node
node.Name = String.Format("mesh_{0}_{1}", x + 10, y + 10);
// add the node as a child to the layer node
layer.AddWorldChild(node);
}
}
}
}Saving a Layer#
Changes made in the child nodes of the layer node can be saved into the .node file by using the World.SaveNodes() function:
NodeLayerClass.cs
Source code (C#)
using System;
using System.Collections;
using System.Collections.Generic;
using Unigine;
[Component(PropertyGuid = "ca7e3fdc0ec5d98b0fbb616e3582b9f5331702d0")]
public class NodeLayerClass : Component
{
private void Init()
{
// create a layer node
NodeLayer layer = new NodeLayer("nodes/layer_0.node");
// set a name for the node
layer.Name = "layer_0";
// create child nodes
for (int y = -10; y <= 10; y++)
{
for (int x = -10; x <= 10; x++)
{
// create a mesh
Mesh mesh = new Mesh();
mesh.AddBoxSurface("box_0", new vec3(1.0f));
// create a node (e.g. an instance of the ObjectMeshDynamic class)
ObjectMeshDynamic node = new ObjectMeshDynamic(mesh);
// set node transformation
node. WorldTransform = MathLib.Translate(new vec3(x * 2.0f, y * 2.0f, 0.0f));
// set a name for the node
node.Name = String.Format("mesh_{0}_{1}", x + 10, y + 10);
// add the node as a child to the layer node
layer.AddWorldChild(node);
}
}
// declare a list of nodes
List<Node> nodes_list = new List<Node>();
// add child nodes of the layer to the declared list
for (int i = 0; i < layer.NumChildren; i++) {
nodes_list.Add(layer.GetChild(i));
}
// convert the list to Unigine.Node[] array so that nodes can be saved to a file later
Node[] nodes = nodes_list.ToArray();
// save nodes to the .node file
if (World.SaveNodes(layer.NodePath, nodes) == 0) {
Log.Error("Layer hasn't been saved\n");
}
}
}See Also#
- Article on Layer
NodeLayer Class
Properties
string NodePath#
The path to the node layer: a path to a .node file where child nodes of the layer are stored.
Members
NodeLayer ( string name ) #
Constructor. Creates a node layer with specified file name to store it.Arguments
- string name - Name of the layer.
static int type ( ) #
Returns the type of the node.Return value
NodeLayer type identifier.Last update:
14.12.2022
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