public Scene[] LoadScenes (out int defaultScene) {
defaultScene = -1;
if (gltf.Scene == null)
return new Scene[] {};
List<Scene> scenes = new List<Scene> ();
defaultScene = (int)gltf.Scene;
for (int i = 0; i < gltf.Scenes.Length; i++) {
GL.Scene scene = gltf.Scenes[i];
Debug.WriteLine ("Loading Scene {0}", scene.Name);
scenes.Add (new Scene {
Name = scene.Name,
});
if (scene.Nodes.Length == 0)
continue;
scenes[i].Root = new Node {
localMatrix = Matrix4x4.Identity,
Children = new List<Node> ()
};
foreach (int nodeIdx in scene.Nodes)
loadNode (scenes[i].Root, gltf.Nodes[nodeIdx]);
}
return scenes.ToArray ();
}
private void InitScene()
{
_scene = new gltf.Scene();
_scene.Nodes = new[] { 0 };
_topNode = new gltf.Node();
_topNode.Name = "Z_UP";
_topNode.Matrix = new[]
{
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, -1.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
};
_nodes.Add(_topNode);
}
public Scene[] LoadScenes(out int defaultScene)
{
defaultScene = -1;
if (gltf.Scene == null)
{
return new Scene[] {}
}
;
List <Scene> scenes = new List <Scene> ();
defaultScene = (int)gltf.Scene;
for (int i = 0; i < gltf.Scenes.Length; i++)
{
GL.Scene scene = gltf.Scenes[i];
Debug.WriteLine("Loading Scene {0}", scene.Name);
scenes.Add(new Scene {
Name = scene.Name,
});
if (scene.Nodes.Length == 0)
{
continue;
}
scenes[i].Root = new Node {
localMatrix = Matrix4x4.Identity,
Children = new List <Node> ()
};
foreach (int nodeIdx in scene.Nodes)
{
loadNode(scenes[i].Root, gltf.Nodes[nodeIdx]);
}
}
return(scenes.ToArray());
}
void loadNode(Node parentNode, GL.Node gltfNode)
{
Debug.WriteLine("Loading node {0}", gltfNode.Name);
Vector3 translation = new Vector3();
Quaternion rotation = Quaternion.Identity;
Vector3 scale = new Vector3(1);
Matrix4x4 localTransform = Matrix4x4.Identity;
if (gltfNode.Matrix != null)
{
float[] M = gltfNode.Matrix;
localTransform = new Matrix4x4(
M[0], M[1], M[2], M[3],
M[4], M[5], M[6], M[7],
M[8], M[9], M[10], M[11],
M[12], M[13], M[14], M[15]);
}
if (gltfNode.Translation != null)
{
FromFloatArray(ref translation, gltfNode.Translation);
}
if (gltfNode.Translation != null)
{
FromFloatArray(ref rotation, gltfNode.Rotation);
}
if (gltfNode.Translation != null)
{
FromFloatArray(ref scale, gltfNode.Scale);
}
localTransform *=
Matrix4x4.CreateScale(scale) *
Matrix4x4.CreateFromQuaternion(rotation) *
Matrix4x4.CreateTranslation(translation);
//localTransform = Matrix4x4.Identity;
Node node = new Node {
localMatrix = localTransform,
Parent = parentNode,
Name = gltfNode.Name
};
parentNode.Children.Add(node);
if (gltfNode.Children != null)
{
node.Children = new List <Node> ();
for (int i = 0; i < gltfNode.Children.Length; i++)
{
loadNode(node, gltf.Nodes[gltfNode.Children[i]]);
}
}
if (gltfNode.Mesh != null)
{
node.Mesh = meshes[(int)gltfNode.Mesh];
}
}
