private async void PageLoaded(object sender, RoutedEventArgs e)
{
var bmp = new WriteableBitmap(1024, 768);
imageControl.Source = bmp;
device = new RenderDevice(bmp);
camera = new Camera
{
Position = new Vector3(0, 0, 10.0f),
Target = Vector3.Zero
};
var importer = new BabylonImporter();
var importedMeshes = await importer.LoadFileAsync("model.babylon");
meshes = new List<Mesh>();
foreach(var mesh in importedMeshes)
meshes.Add(mesh);
foreach(var mesh in importedMeshes)
{
var newMesh = new Mesh("MonkeyClone", mesh.Vertices, mesh.Faces);
newMesh.Position = new Vector3(2.65f, 0, 0);
meshes.Add(newMesh);
}
CompositionTarget.Rendering += Render;
}
public async Task<Mesh[]> LoadFileAsync(string filename)
{
var meshes = new List<Mesh>();
var file = await Package.Current.InstalledLocation.GetFileAsync(filename);
var data = await FileIO.ReadTextAsync(file);
dynamic jsonObject = JsonConvert.DeserializeObject(data);
for (int meshIndex = 0; meshIndex < jsonObject.meshes.Count; meshIndex++)
{
var vertices = jsonObject.meshes[meshIndex].vertices;
var indices = jsonObject.meshes[meshIndex].indices;
var uvCount = jsonObject.meshes[meshIndex].uvCount.Value;
var vertexStep = 1;
switch ((int)uvCount)
{
case 0:
vertexStep = 6;
break;
case 1:
vertexStep = 8;
break;
case 2:
vertexStep = 10;
break;
}
var vertexCount = vertices.Count / vertexStep;
var faceCount = indices.Count / 3;
var mesh = new Mesh(jsonObject.meshes[meshIndex].name.Value, vertexCount, faceCount);
for (int index = 0; index < vertexCount; index++)
{
var x = (float)vertices[index * vertexStep].Value;
var y = (float)vertices[index * vertexStep + 1].Value;
var z = (float)vertices[index * vertexStep + 2].Value;
var nx = (float)vertices[index * vertexStep + 3].Value;
var ny = (float)vertices[index * vertexStep + 4].Value;
var nz = (float)vertices[index * vertexStep + 5].Value;
mesh.Vertices[index] = new Vertex
{
Coordinates = new Vector3(x, y, z),
Normal = Vector3.Normalize(new Vector3(nx, ny, nz)),
};
}
for (var index = 0; index < faceCount; index++)
{
var v0 = (int)indices[index * 3].Value;
var v1 = (int)indices[index * 3 + 1].Value;
var v2 = (int)indices[index * 3 + 2].Value;
mesh.Faces[index] = new Face(v0, v1, v2 );
}
var position = jsonObject.meshes[meshIndex].position;
mesh.Position = new Vector3((float)position[0].Value, (float)position[1].Value, (float)position[2].Value);
meshes.Add(mesh);
}
return meshes.ToArray();
}