private Gltf InitializeGlTF()
{
var gltf = new Gltf();
var asset = new Asset();
asset.Version = "2.0";
asset.Generator = "hypar-gltf";
gltf.Asset = asset;
var root = new Node();
// root.Matrix = new float[]{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};
root.Translation = new[] { 0.0f, 0.0f, 0.0f };
root.Scale = new[] { 1.0f, 1.0f, 1.0f };
// Set Z up by rotating -90d around the X Axis
var q = new Quaternion(new Vector3(1, 0, 0), -Math.PI / 2);
root.Rotation = new[] {
(float)q.X, (float)q.Y, (float)q.Z, (float)q.W
};
gltf.Nodes = new[] { root };
gltf.Scene = 0;
var scene = new Scene();
scene.Nodes = new[] { 0 };
gltf.Scenes = new[] { scene };
gltf.ExtensionsUsed = new[] { "KHR_materials_pbrSpecularGlossiness" };
var materials = new Dictionary <string, int>();
foreach (var kvp in this._materials)
{
var m = kvp.Value;
var mId = gltf.AddMaterial(m.Name, m.Color.Red, m.Color.Green, m.Color.Blue, m.Color.Alpha, m.SpecularFactor, m.GlossinessFactor);
materials.Add(m.Name, mId);
}
foreach (var kvp in this._elements)
{
var e = kvp.Value;
GetRenderDataForElement(e, gltf, materials);
}
var buff = new glTFLoader.Schema.Buffer();
buff.ByteLength = _buffer.Count();
gltf.Buffers = new[] { buff };
return(gltf);
}