//private static Float3 GetFloat3(int index, int stride, Input input, int[] poligonArray)
//{
// return input.SourceData.GetFloat3(poligonArray[index * stride + input.Offset]);
//}
private void CopySkin(Scene scene, XElement instance, MeshSkinAndMaterials sam)
{
var bind = instance.Element(this.schema.bindMaterialName);
if (bind != null)
{
var technique_common = bind.Element(this.schema.techniqueCommonName);
if (technique_common != null)
{
var ms = new MaterialSet();
foreach (var instanceMaterial in technique_common.Elements(this.schema.instanceMaterialName))
{
var symbol = instanceMaterial.AttributeValue(this.schema.symbolName);
var target = instanceMaterial.AttributeValue(this.schema.targetName);
var matId =
this.collada.Element(this.schema.libraryMaterialsName).ElementByUrl(target).AttributeValue(this.schema.idName);
ms.Add(symbol, (from m in scene.Materials where m.Id == matId select m).First());
}
sam.Materials.Add(ms);
}
}
}
private void ParseTriangles(
XElement mesh, MeshSkinAndMaterials skinAndMaterials, SeparateStreamsMesh dstMesh, XElement element)
{
var meshInputs = this.ParseInputs(element);
int[] p = new int[meshInputs.Count * meshInputs.Stride * 3];
this.ParseIntArray(element.ElementValue(this.schema.pName), p);
var subMesh = dstMesh.CreateSubmesh();
subMesh.Material = skinAndMaterials.GetAnyMaterialFor(element.AttributeValue(this.schema.materialAttributeName));
subMesh.VertexSourceType = VertexSourceType.TriangleList;
var streamList = StreamListOrderedByOffset(meshInputs, subMesh);
for (int polygonIndex = 0; polygonIndex < meshInputs.Count; ++polygonIndex)
{
AddVertex(p, polygonIndex*3, streamList, meshInputs.Stride);
AddVertex(p, polygonIndex * 3+1, streamList, meshInputs.Stride);
AddVertex(p, polygonIndex * 3+2, streamList, meshInputs.Stride);
}
}
private void ParsePolylist(
XElement mesh, MeshSkinAndMaterials skinAndMaterials, SeparateStreamsMesh dstMesh, XElement element)
{
var meshInputs = this.ParseInputs(element);
int[] vcount = new int[meshInputs.Count];
this.ParseIntArray(element.ElementValue(this.schema.vcountName), vcount);
var points = vcount.Sum(a => a);
var firstSize = vcount[0];
bool isAllTheSame = vcount.All(i => i == firstSize);
int[] p = new int[points * meshInputs.Stride];
this.ParseIntArray(element.ElementValue(this.schema.pName), p);
var subMesh = dstMesh.CreateSubmesh();
subMesh.Material = skinAndMaterials.GetAnyMaterialFor(element.AttributeValue(this.schema.materialAttributeName));
var streamList = StreamListOrderedByOffset(meshInputs, subMesh);
//if (isAllTheSame)
//{
// if (firstSize == 3)
// {
// subMesh.VertexSourceType = VertexSourceType.TrianleList;
// this.ParseElements(p, subMesh, meshInputs, points);
// return;
// }
// if (firstSize == 4)
// {
// subMesh.VertexSourceType = VertexSourceType.QuadList;
// this.ParseElements(p, subMesh, meshInputs, points);
// return;
// }
//}
subMesh.VertexSourceType = VertexSourceType.TriangleList;
int startIndex = 0;
for (int polygonIndex = 0; polygonIndex < vcount.Length; ++polygonIndex)
{
for (int i = 2; i < vcount[polygonIndex]; i++)
{
AddVertex(p, 0, streamList, meshInputs.Stride);
AddVertex(p, i-1, streamList, meshInputs.Stride);
AddVertex(p, i , streamList, meshInputs.Stride);
}
startIndex += vcount[polygonIndex];
}
}
private void ParsePolygons( MeshSkinAndMaterials skinAndMaterials, SeparateStreamsMesh dstMesh, XElement element)
{
var meshInputs = this.ParseInputs(element);
var subMesh = dstMesh.CreateSubmesh();
subMesh.Material = skinAndMaterials.GetAnyMaterialFor(element.AttributeValue(this.schema.materialAttributeName));
subMesh.VertexSourceType = VertexSourceType.TriangleList;
var streamList = StreamListOrderedByOffset(meshInputs, subMesh);
foreach (var polygon in element.Elements(this.schema.pName))
{
var list = this.ParseIntList(polygon.Value);
int numElements = list.Count / meshInputs.Stride;
for (int i=1; i<numElements-1; ++i)
{
AddVertex(list, 0, streamList, meshInputs.Stride);
AddVertex(list, i, streamList, meshInputs.Stride);
AddVertex(list, i+1, streamList, meshInputs.Stride);
}
}
}
private void ParseMesh(Scene scene, XElement mesh, MeshSkinAndMaterials skinAndMaterials, SeparateStreamsMesh dstMesh)
{
Dictionary<string, StreamKey> knownStreams = new Dictionary<string, StreamKey>();
Dictionary<StreamKey, string> knownSemantics = new Dictionary<StreamKey, string>();
foreach (var element in mesh.Elements())
{
foreach (var subElement in element.Elements().Where(x=>x.Name == this.schema.inputName))
{
var semanticAttribute = subElement.Attribute(schema.semanticName);
var semantic = (semanticAttribute == null)?null:semanticAttribute.Value;
var setAttribute = subElement.Attribute(schema.setName);
var set = (setAttribute==null)?0:int.Parse(setAttribute.Value, CultureInfo.InvariantCulture);
var sourceAttribute = subElement.Attribute(schema.sourceAttributeName);
var source = (sourceAttribute == null)?null:sourceAttribute.Value;
var key = new StreamKey(semantic, set);
StreamKey knownStreamKey;
if (!knownStreams.TryGetValue(source, out knownStreamKey))
{
knownStreams.Add(source,key);
}
else if (knownStreamKey != key)
{
throw new NotImplementedException();
}
string knownSemanticsKey;
if (!knownSemantics.TryGetValue(key, out knownSemanticsKey))
{
knownSemantics.Add(key, source);
}
else if (knownSemanticsKey != source)
{
throw new NotImplementedException();
}
}
}
foreach (var streamName in knownStreams)
{
var s = mesh.ElementByUrl(streamName.Key);
if (s != null)
{
if (s.Name == schema.verticesName)
{
}
else
{
var source = ParseSource(s, schema);
dstMesh.SetStream(streamName.Value.Key, streamName.Value.Channel, CreateMeshStream(source, streamName.Value.Key));
}
}
}
foreach (var element in mesh.Elements())
{
if (element.Name == this.schema.polygonsName)
{
this.ParsePolygons(skinAndMaterials, dstMesh, element);
}
else if (element.Name == this.schema.polylistName)
{
this.ParsePolylist(mesh, skinAndMaterials, dstMesh, element);
}
else if (element.Name == this.schema.trianglesName)
{
this.ParseTriangles(mesh, skinAndMaterials, dstMesh, element);
}
else if (element.Name == this.schema.verticesName || element.Name == this.schema.sourceName)
{
}
else
{
throw new DaeException(message: "Unknown mesh element " + element.Name.LocalName);
}
}
}
private MeshSkinAndMaterials FindContext(Scene scene, XElement geometry)
{
var sam = new MeshSkinAndMaterials();
var geometryId = "#" + geometry.AttributeValue(this.schema.idName);
var controllers = this.collada.Element(this.schema.libraryControllersName);
if (controllers != null)
{
sam.SkinController = (from controller in controllers.Elements(this.schema.controllerName)
let skin = controller.Element(this.schema.skinName)
where skin != null && skin.AttributeValue(this.schema.sourceAttributeName) == geometryId
select controller).FirstOrDefault();
}
string controllerId = "#";
if (sam.SkinController != null)
{
controllerId = "#" + sam.SkinController.AttributeValue(this.schema.idName);
}
var libScenes = this.collada.Element(this.schema.libraryVisualScenesName);
if (libScenes != null)
{
foreach (var visualScene in libScenes.Elements(this.schema.visualSceneName))
{
foreach (var node in visualScene.Descendants(this.schema.nodeName))
{
var instanceGeo = node.Element(this.schema.instanceGeometryName);
if (instanceGeo != null && instanceGeo.AttributeValue(this.schema.urlName) == geometryId)
{
this.CopySkin(scene, instanceGeo, sam);
}
var instanceCtrl = node.Element(this.schema.instanceControllerName);
if (instanceCtrl != null && instanceCtrl.AttributeValue(this.schema.urlName) == controllerId)
{
this.CopySkin(scene, instanceCtrl, sam);
}
}
}
}
return sam;
}