/// <summary>
/// Populates DomNode with data from stream data</summary>
/// <param name="stream">Stream to read data into</param>
/// <param name="node">Node to populate</param>
/// <param name="resolvedUri">URI representing object file</param>
public static void PopulateDomNode(Stream stream, ref DomNode node, Uri resolvedUri)
{
// Parse .obj file
var obj = new ObjFile();
obj.Read(stream, resolvedUri);
if (node == null)
node = new DomNode(Schema.nodeType.Type);
// Populate mesh
var mesh = new DomNode(Schema.meshType.Type);
mesh.SetAttribute(Schema.meshType.nameAttribute, Path.GetFileName(resolvedUri.LocalPath));
var vertexArray = new DomNode(Schema.meshType_vertexArray.Type);
// Populate primitive data
foreach (Group group in obj.m_groups.Values)
foreach (FaceSet face in group.FaceSets.Values)
{
var primitive = new DomNode(Schema.vertexArray_primitives.Type);
primitive.SetAttribute(Schema.vertexArray_primitives.indicesAttribute, face.Indices.ToArray());
primitive.SetAttribute(Schema.vertexArray_primitives.sizesAttribute, face.Sizes.ToArray());
primitive.SetAttribute(Schema.vertexArray_primitives.typeAttribute, "POLYGONS");
// Populate shader
MaterialDef material;
obj.m_mtl.Materials.TryGetValue(face.MaterialName, out material);
if (material != null)
{
string texture = null;
if (material.TextureName != null)
texture = new Uri(resolvedUri, material.TextureName).AbsolutePath;
var shader = new DomNode(Schema.shaderType.Type);
shader.SetAttribute(Schema.shaderType.nameAttribute, material.Name);
shader.SetAttribute(Schema.shaderType.ambientAttribute, material.Ambient);
shader.SetAttribute(Schema.shaderType.diffuseAttribute, material.Diffuse);
shader.SetAttribute(Schema.shaderType.shininessAttribute, material.Shininess);
shader.SetAttribute(Schema.shaderType.specularAttribute, material.Specular);
shader.SetAttribute(Schema.shaderType.textureAttribute, texture);
primitive.SetChild(Schema.vertexArray_primitives.shaderChild, shader);
}
// Note: Bindings must be in the order: normal, map1, position
DomNode binding;
if (face.HasNormals)
{
binding = new DomNode(Schema.primitives_binding.Type);
binding.SetAttribute(Schema.primitives_binding.sourceAttribute, "normal");
primitive.GetChildList(Schema.vertexArray_primitives.bindingChild).Add(binding);
}
if (face.HasTexCoords)
{
binding = new DomNode(Schema.primitives_binding.Type);
binding.SetAttribute(Schema.primitives_binding.sourceAttribute, "map1");
primitive.GetChildList(Schema.vertexArray_primitives.bindingChild).Add(binding);
}
binding = new DomNode(Schema.primitives_binding.Type);
binding.SetAttribute(Schema.primitives_binding.sourceAttribute, "position");
primitive.GetChildList(Schema.vertexArray_primitives.bindingChild).Add(binding);
vertexArray.GetChildList(Schema.meshType_vertexArray.primitivesChild).Add(primitive);
}
// Populate array data
DomNode array;
if (obj.m_normals.Count > 0)
{
array = new DomNode(Schema.vertexArray_array.Type);
array.SetAttribute(Schema.vertexArray_array.Attribute, obj.m_normals.ToArray());
array.SetAttribute(Schema.vertexArray_array.countAttribute, obj.m_normals.Count / 3);
array.SetAttribute(Schema.vertexArray_array.nameAttribute, "normal");
array.SetAttribute(Schema.vertexArray_array.strideAttribute, 3);
vertexArray.GetChildList(Schema.meshType_vertexArray.arrayChild).Add(array);
}
if (obj.m_texcoords.Count > 0)
{
array = new DomNode(Schema.vertexArray_array.Type);
array.SetAttribute(Schema.vertexArray_array.Attribute, obj.m_texcoords.ToArray());
array.SetAttribute(Schema.vertexArray_array.countAttribute, obj.m_texcoords.Count / 2);
array.SetAttribute(Schema.vertexArray_array.nameAttribute, "map1");
array.SetAttribute(Schema.vertexArray_array.strideAttribute, 2);
vertexArray.GetChildList(Schema.meshType_vertexArray.arrayChild).Add(array);
}
array = new DomNode(Schema.vertexArray_array.Type);
array.SetAttribute(Schema.vertexArray_array.Attribute, obj.m_positions.ToArray());
array.SetAttribute(Schema.vertexArray_array.countAttribute, obj.m_positions.Count / 3);
array.SetAttribute(Schema.vertexArray_array.nameAttribute, "position");
array.SetAttribute(Schema.vertexArray_array.strideAttribute, 3);
vertexArray.GetChildList(Schema.meshType_vertexArray.arrayChild).Add(array);
// Set mesh elements
mesh.SetChild(Schema.meshType.vertexArrayChild, vertexArray);
node.SetChild(Schema.nodeType.meshChild, mesh);
}
