public HeightMapInfoContent(ModelContent model, MeshContent terrainMesh, float terrainScale, int terrainWidth, int terrainLength)
{
Model = model;
if (terrainMesh == null)
{
throw new ArgumentNullException("terrainMesh");
}
if (terrainWidth <= 0)
{
throw new ArgumentOutOfRangeException("terrainWidth");
}
if (terrainLength <= 0)
{
throw new ArgumentOutOfRangeException("terrainLength");
}
TerrainScale = terrainScale;
Height = new float[terrainWidth, terrainLength];
Normals = new Vector3[terrainWidth, terrainLength];
GeometryContent item = terrainMesh.Geometry[0];
for (int i = 0; i < item.Vertices.VertexCount; i++)
{
Vector3 vector3 = item.Vertices.Positions[i];
Vector3 item1 = (Vector3)item.Vertices.Channels[VertexChannelNames.Normal()][i];
int x = (int)(vector3.X / terrainScale + (terrainWidth - 1) / 2f);
int z = (int)(vector3.Z / terrainScale + (terrainLength - 1) / 2f);
Height[x, z] = vector3.Y;
Normals[x, z] = item1;
}
}
public static string GetXNAName(VertexAttribute attr)
{
switch (attr.usage)
{
case COLOR:
return(VertexChannelNames.Color(0));
case NORMAL:
return(VertexChannelNames.Normal());
case TEX_COORD:
return(VertexChannelNames.TextureCoordinate(attr.attrIndex));
case BONE_WEIGHT:
return(VertexChannelNames.Weights(attr.attrIndex));
case TANGENT:
return(VertexChannelNames.Tangent(0));
case BINORMAL:
return(VertexChannelNames.Binormal(0));
}
return(null);
}
public void BasicMeshBuilderTest()
{
var output = CreateBasicMesh(material1);
Assert.NotNull(output);
Assert.NotNull(output.Geometry);
Assert.NotNull(output.Positions);
Assert.AreEqual(new Vector3(0, 0, 0), output.Positions[0]);
Assert.AreEqual(new Vector3(1, 0, 0), output.Positions[1]);
Assert.AreEqual(new Vector3(1, 1, 1), output.Positions[2]);
Assert.AreEqual(1, output.Geometry.Count);
Assert.AreEqual(0, output.Geometry[0].Indices[0]);
Assert.AreEqual(1, output.Geometry[0].Indices[1]);
Assert.AreEqual(2, output.Geometry[0].Indices[2]);
Assert.AreEqual(0, output.Geometry[0].Vertices.PositionIndices[0]);
Assert.AreEqual(1, output.Geometry[0].Vertices.PositionIndices[1]);
Assert.AreEqual(2, output.Geometry[0].Vertices.PositionIndices[2]);
Assert.AreEqual(new Vector3(0, 0, 0), output.Geometry[0].Vertices.Positions[0]);
Assert.AreEqual(new Vector3(1, 0, 0), output.Geometry[0].Vertices.Positions[1]);
Assert.AreEqual(new Vector3(1, 1, 1), output.Geometry[0].Vertices.Positions[2]);
//Check if normals are generated
Assert.NotNull(output.Geometry[0].Vertices.Channels[VertexChannelNames.Normal(0)]);
Assert.AreEqual(material1, output.Geometry[0].Material);
Assert.AreEqual(Matrix.Identity, output.Transform);
Assert.AreEqual(3, output.Positions.Count);
Assert.AreEqual("Mesh1", output.Name);
}
void startMesh(string name)
{
meshBuilder = MeshBuilder.StartMesh(name);
meshBuilder.SwapWindingOrder = true;
textureCoordinateDataIndex = meshBuilder.CreateVertexChannel <Vector2>(VertexChannelNames.TextureCoordinate(0));
normalDataIndex = meshBuilder.CreateVertexChannel <Vector3>(VertexChannelNames.Normal( ));
positionMap = new int[positions.Count];
for (int i = 0; i < positions.Count; i++)
{
positionMap[i] = meshBuilder.CreatePosition(positions[i]);
}
}
/// <summary>
/// Helper function creates a new geometry object,
/// and sets it to use our billboard effect.
/// </summary>
static GeometryContent CreateVegetationGeometry(string textureFilename,
float width, float height,
float windAmount,
ContentIdentity identity)
{
GeometryContent geometry = new GeometryContent();
// Add the vertex channels needed for our billboard geometry.
VertexChannelCollection channels = geometry.Vertices.Channels;
// Add a vertex channel holding normal vectors.
channels.Add <Vector3>(VertexChannelNames.Normal(), null);
// Add a vertex channel holding texture coordinates.
channels.Add <Vector2>(VertexChannelNames.TextureCoordinate(0), null);
// Add a second texture coordinate channel, holding a per-billboard
// random number. This is used to make each billboard come out a
// slightly different size, and to animate at different speeds.
channels.Add <float>(VertexChannelNames.TextureCoordinate(1), null);
// Create a material for rendering the billboards.
EffectMaterialContent material = new EffectMaterialContent();
// Point the material at our custom billboard effect.
string directory = Path.GetDirectoryName(identity.SourceFilename);
string effectFilename = Path.Combine(directory, "Billboard.fx");
material.Effect = new ExternalReference <EffectContent>(effectFilename);
// Set the texture to be used by these billboards.
textureFilename = Path.Combine(directory, textureFilename);
material.Textures.Add("Texture", new ExternalReference <TextureContent>(textureFilename));
// Set effect parameters describing the size and
// wind sensitivity of these billboards.
material.OpaqueData.Add("BillboardWidth", width);
material.OpaqueData.Add("BillboardHeight", height);
material.OpaqueData.Add("WindAmount", windAmount);
geometry.Material = material;
return(geometry);
}
/// <summary>
/// This constructor will initialize the height array from the values in the
/// bitmap. Each pixel in the bitmap corresponds to one entry in the height
/// array.
/// </summary>
public HeightMapInfoContent(MeshContent terrainMesh, float terrainScale,
int terrainWidth, int terrainLength)
{
// validate the parameters
if (terrainMesh == null)
{
throw new ArgumentNullException("terrainMesh");
}
if (terrainWidth <= 0)
{
throw new ArgumentOutOfRangeException("terrainWidth");
}
if (terrainLength <= 0)
{
throw new ArgumentOutOfRangeException("terrainLength");
}
this.terrainScale = terrainScale;
// create new arrays of the requested size.
height = new float[terrainWidth, terrainLength];
normals = new Vector3[terrainWidth, terrainLength];
// to fill those arrays, we'll look at the position and normal data
// contained in the terrainMesh.
GeometryContent geometry = terrainMesh.Geometry[0];
// we'll go through each vertex....
for (int i = 0; i < geometry.Vertices.VertexCount; i++)
{
// ... and look up its position and normal.
Vector3 position = geometry.Vertices.Positions[i];
Vector3 normal = (Vector3)geometry.Vertices.Channels
[VertexChannelNames.Normal()][i];
// from the position's X and Z value, we can tell what X and Y
// coordinate of the arrays to put the height and normal into.
int arrayX = (int)
((position.X / terrainScale) + (terrainWidth - 1) / 2.0f);
int arrayY = (int)
((position.Z / terrainScale) + (terrainLength - 1) / 2.0f);
height[arrayX, arrayY] = position.Y;
normals[arrayX, arrayY] = normal;
}
}
private static void CalculateNormals(MeshContent mesh, bool overwriteExistingNormals)
{
Debug.Assert(mesh != null);
string name = VertexChannelNames.Normal();
if (!overwriteExistingNormals && mesh.Geometry.All(geometry => geometry.Vertices.Channels.Contains(name)))
{
return; // Nothing to do.
}
// Accumulate triangle normals at vertices.
// IMPORTANT: Calculating normals per submesh does not work!
// - Normals at submesh borders are only correct if we consider adjacent submeshes.
// - GeometryContent.Positions contains duplicated entries if neighbor triangles do
// have the same texture coordinates. MeshContent.Positions are unique (no duplicates).
var positions = mesh.Positions.Select(p => (Vector3F)p).ToArray();
var indices = mesh.Geometry
.SelectMany(geometry => geometry.Indices.Select(i => geometry.Vertices.PositionIndices[i]))
.ToArray();
// Calculate vertex normals.
var normals = DirectXMesh.ComputeNormals(indices, positions, true, VertexNormalAlgorithm.WeightedByAngle);
// Copy normals to vertex channels.
foreach (var geometry in mesh.Geometry)
{
if (!geometry.Vertices.Channels.Contains(name))
{
geometry.Vertices.Channels.Add <Vector3>(name, null);
}
else if (!overwriteExistingNormals)
{
continue;
}
var normalChannel = geometry.Vertices.Channels.Get <Vector3>(name);
var positionIndices = geometry.Vertices.PositionIndices;
for (int i = 0; i < normalChannel.Count; i++)
{
normalChannel[i] = (Vector3)normals[positionIndices[i]];
}
}
}
/// <summary>
/// Starts a new mesh and fills it with mesh mapped positions.
/// </summary>
/// <param name="name">Name of mesh.</param>
private void StartMesh(string name)
{
meshBuilder = MeshBuilder.StartMesh(name);
// Obj files need their winding orders swapped
meshBuilder.SwapWindingOrder = true;
// Add additional vertex channels for texture coordinates and normals
textureCoordinateDataIndex = meshBuilder.CreateVertexChannel <Vector2>(
VertexChannelNames.TextureCoordinate(0));
normalDataIndex =
meshBuilder.CreateVertexChannel <Vector3>(VertexChannelNames.Normal());
// Add each position to this mesh with CreatePosition
positionMap = new int[positions.Count];
for (int i = 0; i < positions.Count; i++)
{
// positionsMap redirects from the original positions in the order
// they were read from file to indices returned from CreatePosition
positionMap[i] = meshBuilder.CreatePosition(positions[i]);
}
}
private static void CalculateTangentFrames(GeometryContent geometry, string textureCoordinateChannelName, string tangentChannelName, string binormalChannelName)
{
Debug.Assert(!string.IsNullOrWhiteSpace(textureCoordinateChannelName));
var indices = geometry.Indices;
var positions = geometry.Vertices.Positions.Select(p => (Vector3F)p).ToArray();
var normals = geometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal()).Select(n => (Vector3F)n).ToArray();
var textureCoordinates = geometry.Vertices.Channels.Get <Vector2>(textureCoordinateChannelName).Select(n => (Vector2F)n).ToArray();
Vector3F[] tangents;
Vector3F[] bitangents;
DirectXMesh.ComputeTangentFrame(indices, positions, normals, textureCoordinates, out tangents, out bitangents);
if (!string.IsNullOrEmpty(tangentChannelName))
{
geometry.Vertices.Channels.Add(tangentChannelName, tangents.Select(t => (Vector3)t));
}
if (!string.IsNullOrEmpty(binormalChannelName))
{
geometry.Vertices.Channels.Add(binormalChannelName, bitangents.Select(b => (Vector3)b));
}
}
private GeometryContent CreateGeometry(MeshContent mesh, Mesh aiMesh)
{
var geom = new GeometryContent {
Material = _materials[aiMesh.MaterialIndex]
};
// Vertices
var baseVertex = mesh.Positions.Count;
foreach (var vert in aiMesh.Vertices)
{
mesh.Positions.Add(ToXna(vert));
}
geom.Vertices.AddRange(Enumerable.Range(baseVertex, aiMesh.VertexCount));
geom.Indices.AddRange(aiMesh.GetIndices());
if (aiMesh.HasBones)
{
var xnaWeights = new List <BoneWeightCollection>();
for (var i = 0; i < geom.Indices.Count; i++)
{
var list = new BoneWeightCollection();
for (var boneIndex = 0; boneIndex < aiMesh.BoneCount; boneIndex++)
{
var bone = aiMesh.Bones[boneIndex];
foreach (var weight in bone.VertexWeights)
{
if (weight.VertexID != i)
{
continue;
}
list.Add(new BoneWeight(bone.Name, weight.Weight));
}
}
if (list.Count > 0)
{
xnaWeights.Add(list);
}
}
geom.Vertices.Channels.Add(VertexChannelNames.Weights(0), xnaWeights);
}
// Individual channels go here
if (aiMesh.HasNormals)
{
geom.Vertices.Channels.Add(VertexChannelNames.Normal(), ToXna(aiMesh.Normals));
}
for (var i = 0; i < aiMesh.TextureCoordinateChannelCount; i++)
{
geom.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(i),
ToXnaTexCoord(aiMesh.TextureCoordinateChannels[i]));
}
for (var i = 0; i < aiMesh.VertexColorChannelCount; i++)
{
geom.Vertices.Channels.Add(VertexChannelNames.Color(i),
ToXnaColors(aiMesh.VertexColorChannels[i]));
}
return(geom);
}
/// <summary>
/// Recursive function adds vegetation billboards to all meshes.
/// </summary>
void GenerateVegetation(NodeContent node, ContentIdentity identity)
{
// First, recurse over any child nodes.
foreach (NodeContent child in node.Children)
{
GenerateVegetation(child, identity);
}
// Check whether this node is in fact a mesh.
MeshContent mesh = node as MeshContent;
if (mesh != null)
{
// Create three new geometry objects, one for each type
// of billboard that we are going to create. Set different
// effect parameters to control the size and wind sensitivity
// for each type of billboard.
GeometryContent grass = CreateVegetationGeometry("grass.tga", 5, 5, 1, identity);
GeometryContent trees = CreateVegetationGeometry("tree.tga", 12, 12, 0.5f, identity);
GeometryContent cats = CreateVegetationGeometry("cat.tga", 5, 5, 0, identity);
MeshContent vegetationMesh = new MeshContent {
Name = "Billboards"
};
// Loop over all the existing geometry in this mesh.
foreach (GeometryContent geometry in mesh.Geometry)
{
IList <int> indices = geometry.Indices;
IList <Vector3> positions = geometry.Vertices.Positions;
IList <Vector3> normals = geometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal());
// Loop over all the triangles in this piece of geometry.
for (int triangle = 0; triangle < indices.Count; triangle += 3)
{
// Look up the three indices for this triangle.
int i1 = indices[triangle];
int i2 = indices[triangle + 1];
int i3 = indices[triangle + 2];
// Create vegetation billboards to cover this triangle.
// A more sophisticated implementation would measure the
// size of the triangle to work out how many to create,
// but we don't bother since we happen to know that all
// our triangles are roughly the same size.
for (int count = 0; count < BillboardsPerTriangle; count++)
{
Vector3 position, normal;
// Choose a random location on the triangle.
PickRandomPoint(positions[i1], positions[i2], positions[i3],
normals[i1], normals[i2], normals[i3],
out position, out normal);
// Randomly choose what type of billboard to create.
GeometryContent billboardType;
if (random.NextDouble() < TreeProbability)
{
billboardType = trees;
// As a special case, force trees to point straight
// upward, even if they are growing on a slope.
// That's what trees do in real life, after all!
normal = Vector3.Up;
}
else if (random.NextDouble() < CatProbability)
{
billboardType = cats;
}
else
{
billboardType = grass;
}
// Add a new billboard to the output geometry.
GenerateBillboard(vegetationMesh, billboardType, position, normal);
}
}
}
// Add our new billboard geometry to the main mesh.
vegetationMesh.Geometry.Add(grass);
vegetationMesh.Geometry.Add(trees);
vegetationMesh.Geometry.Add(cats);
mesh.Children.Add(vegetationMesh);
}
}
/// <summary>
/// Helper function adds a single new billboard sprite to the output geometry.
/// </summary>
private void GenerateBillboard(MeshContent mesh, GeometryContent geometry,
Vector3 position, Vector3 normal)
{
VertexContent vertices = geometry.Vertices;
VertexChannelCollection channels = vertices.Channels;
// First, create a vertex position entry for this billboard. Each
// billboard is going to be rendered a quad, so we need to create four
// vertices, but at this point we only have a single position that is
// shared by all the vertices. The real position of each vertex will be
// computed on the fly in the vertex shader, thus allowing us to
// implement effects like making the billboard rotate to always face the
// camera, and sway in the wind. As input the vertex shader only wants to
// know the center point of the billboard, and that is the same for all
// the vertices, so only a single position is needed here.
int positionIndex = mesh.Positions.Count;
mesh.Positions.Add(position);
// Second, create the four vertices, all referencing the same position.
int index = vertices.PositionIndices.Count;
for (int i = 0; i < 4; i++)
{
vertices.Add(positionIndex);
}
// Third, add normal data for each of the four vertices. A normal for a
// billboard is kind of a silly thing to define, since we are using a
// 2D sprite to fake a complex 3D object that would in reality have many
// different normals across its surface. Here we are just using a copy
// of the normal from the ground underneath the billboard, which can be
// used in our lighting computation to make the vegetation darker or
// lighter depending on the lighting of the underlying landscape.
VertexChannel <Vector3> normals;
normals = channels.Get <Vector3>(VertexChannelNames.Normal());
for (int i = 0; i < 4; i++)
{
normals[index + i] = normal;
}
// Fourth, add texture coordinates.
VertexChannel <Vector2> texCoords;
texCoords = channels.Get <Vector2>(VertexChannelNames.TextureCoordinate(0));
texCoords[index + 0] = new Vector2(0, 0);
texCoords[index + 1] = new Vector2(1, 0);
texCoords[index + 2] = new Vector2(1, 1);
texCoords[index + 3] = new Vector2(0, 1);
// Fifth, add a per-billboard random value, which is the same for
// all four vertices. This is used in the vertex shader to make
// each billboard a slightly different size, and to be affected
// differently by the wind animation.
float randomValue = (float)random.NextDouble() * 2 - 1;
VertexChannel <float> randomValues;
randomValues = channels.Get <float>(VertexChannelNames.TextureCoordinate(1));
for (int i = 0; i < 4; i++)
{
randomValues[index + i] = randomValue;
}
// Sixth and finally, add indices defining the pair of
// triangles that will be used to render the billboard.
geometry.Indices.Add(index + 0);
geometry.Indices.Add(index + 1);
geometry.Indices.Add(index + 2);
geometry.Indices.Add(index + 0);
geometry.Indices.Add(index + 2);
geometry.Indices.Add(index + 3);
}
private List <DRMorphTargetContent> BuildMorphTargets(GeometryContent geometry, List <MeshContent> inputMorphTargets, int index)
{
int[] vertexReorderMap = _vertexReorderMaps[index];
var morphTargets = new List <DRMorphTargetContent>();
foreach (var inputMorphTarget in inputMorphTargets)
{
int numberOfVertices = geometry.Vertices.VertexCount;
var morphGeometry = inputMorphTarget.Geometry[index];
// Copy relative positions and normals into vertex buffer.
var positions = morphGeometry.Vertices.Positions;
var normals = morphGeometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal());
Vector3[] data = new Vector3[numberOfVertices * 2];
for (int i = 0; i < numberOfVertices; i++)
{
int originalIndex = vertexReorderMap[i];
data[2 * i] = positions[originalIndex];
data[2 * i + 1] = normals[originalIndex];
}
// Determine if morph target is empty.
bool isEmpty = true;
for (int i = 0; i < data.Length; i++)
{
// File formats and preprocessing can introduce some inaccuracies.
// --> Use a relative large epsilon. (The default Numeric.EpsilonF is too small.)
const float epsilon = 1e-4f;
if (!Numeric.IsZero(data[i].LengthSquared(), epsilon * epsilon))
{
Debug.Write(string.Format(
CultureInfo.InvariantCulture,
"Morph target \"{0}\", submesh index {1}: Position/normal delta is {2}.",
inputMorphTarget.Name, index, data[i].Length()));
isEmpty = false;
break;
}
}
if (!isEmpty)
{
// (Note: VertexStride is set explicitly in CreateMorphTargetVertexBuffer().)
// ReSharper disable once PossibleInvalidOperationException
int vertexOffset = _morphTargetVertexBuffer.VertexData.Length / _morphTargetVertexBuffer.VertexDeclaration.VertexStride.Value;
_morphTargetVertexBuffer.Write(
_morphTargetVertexBuffer.VertexData.Length,
12, // The size of one Vector3 in data is 12.
data);
morphTargets.Add(new DRMorphTargetContent
{
Name = inputMorphTarget.Name,
VertexBuffer = _morphTargetVertexBuffer,
StartVertex = vertexOffset,
});
}
}
return((morphTargets.Count > 0) ? morphTargets : null);
}
private ModelMeshContent ProcessMesh(MeshContent mesh, ModelBoneContent parent, ContentProcessorContext context)
{
var parts = new List <ModelMeshPartContent>();
var vertexBuffer = new VertexBufferContent();
var indexBuffer = new IndexCollection();
if (GenerateTangentFrames)
{
context.Logger.LogMessage("Generating tangent frames.");
foreach (GeometryContent geom in mesh.Geometry)
{
if (!geom.Vertices.Channels.Contains(VertexChannelNames.Normal(0)))
{
MeshHelper.CalculateNormals(geom, true);
}
if (!geom.Vertices.Channels.Contains(VertexChannelNames.Tangent(0)) ||
!geom.Vertices.Channels.Contains(VertexChannelNames.Binormal(0)))
{
MeshHelper.CalculateTangentFrames(geom, VertexChannelNames.TextureCoordinate(0), VertexChannelNames.Tangent(0),
VertexChannelNames.Binormal(0));
}
}
}
var startVertex = 0;
foreach (var geometry in mesh.Geometry)
{
var vertices = geometry.Vertices;
var vertexCount = vertices.VertexCount;
ModelMeshPartContent partContent;
if (vertexCount == 0)
{
partContent = new ModelMeshPartContent();
}
else
{
var geomBuffer = geometry.Vertices.CreateVertexBuffer();
vertexBuffer.Write(vertexBuffer.VertexData.Length, 1, geomBuffer.VertexData);
var startIndex = indexBuffer.Count;
indexBuffer.AddRange(geometry.Indices);
partContent = new ModelMeshPartContent(vertexBuffer, indexBuffer, startVertex, vertexCount, startIndex, geometry.Indices.Count / 3);
// Geoms are supposed to all have the same decl, so just steal one of these
vertexBuffer.VertexDeclaration = geomBuffer.VertexDeclaration;
startVertex += vertexCount;
}
partContent.Material = geometry.Material;
parts.Add(partContent);
}
var bounds = new BoundingSphere();
if (mesh.Positions.Count > 0)
{
bounds = BoundingSphere.CreateFromPoints(mesh.Positions);
}
return(new ModelMeshContent(mesh.Name, mesh, parent, bounds, parts));
}
public override NodeContent Import(string filename, ContentImporterContext context)
{
var content = new NodeContent();
var reader = XmlReader.Create(filename);
var xmlMesh = (XmlMesh) new XmlSerializer(typeof(XmlMesh)).Deserialize(reader);
reader.Close();
reader = XmlReader.Create(Path.Combine(Path.GetDirectoryName(filename), xmlMesh.SkeletonLink.Name + ".xml"));
var xmlSkeleton = (XmlSkeleton) new XmlSerializer(typeof(XmlSkeleton)).Deserialize(reader);
reader.Close();
context.Logger.LogImportantMessage("Bones: " + xmlSkeleton.Bones.Length.ToString());
var bones = new Dictionary <string, BoneContent>();
foreach (var xmlBone in xmlSkeleton.Bones)
{
context.Logger.LogImportantMessage("{0}", "-- " + xmlBone.Name + ": " + xmlBone.Position.AsVector3().ToString() + ", " + xmlBone.Rotation.Angle.ToString() + "/" + xmlBone.Rotation.Axis.AsVector3().ToString());
var boneContent = new BoneContent()
{
Name = xmlBone.Name,
Transform =
Matrix.CreateFromAxisAngle(xmlBone.Rotation.Axis.AsVector3(), xmlBone.Rotation.Angle) *
Matrix.CreateTranslation(xmlBone.Position.AsVector3())
};
bones.Add(xmlBone.Name, boneContent);
}
foreach (var boneParent in xmlSkeleton.BoneParents)
{
var parent = bones[boneParent.Parent];
var bone = bones[boneParent.Bone];
parent.Children.Add(bone);
}
var rootBone = bones.Single(x => x.Value.Parent == null);
content.Children.Add(rootBone.Value);
context.Logger.LogImportantMessage("Submeshes: " + xmlMesh.SubMeshes.Length.ToString());
//context.AddDependency(Path.GetFullPath("HUM_M.MATERIAL"));
//var materialFile = File.ReadAllText("HUM_M.MATERIAL");
////context.Logger.LogImportantMessage("{0}", materialFile);
foreach (var xmlSubMesh in xmlMesh.SubMeshes)
{
context.Logger.LogImportantMessage("Submesh: " + xmlSubMesh.Material);
context.Logger.LogImportantMessage("-- Faces: " + xmlSubMesh.Faces.Length.ToString());
if (xmlSubMesh.UseSharedGeometry)
{
context.Logger.LogImportantMessage("-- Uses Shared Geometry");
}
else
{
context.Logger.LogImportantMessage("-- Vertexbuffers: " + xmlSubMesh.Geometry.VertexBuffers.Length.ToString());
context.Logger.LogImportantMessage("-- Vertices (0): " + xmlSubMesh.Geometry.VertexBuffers[0].Vertices.Length.ToString());
context.Logger.LogImportantMessage("-- Vertices (1): " + xmlSubMesh.Geometry.VertexBuffers[1].Vertices.Length.ToString());
}
var builder = MeshBuilder.StartMesh(xmlSubMesh.Material);
//if (xmlSubMesh.Material == "Hum_M/Chest")
// builder.SetMaterial(new SkinnedMaterialContent { Texture = new ExternalReference<TextureContent>("TL2_ARMORTEST_CHEST.png") });
//else if (xmlSubMesh.Material == "Hum_M/MidLeg")
// builder.SetMaterial(new SkinnedMaterialContent { Texture = new ExternalReference<TextureContent>("TL2_ARMORTEST_PANTS.png") });
//else
builder.SetMaterial(new SkinnedMaterialContent {
Texture = new ExternalReference <TextureContent>("Fiend\\FIEND.dds")
});
var normalChannel = builder.CreateVertexChannel <Vector3>(VertexChannelNames.Normal());
var uvChannel = builder.CreateVertexChannel <Vector2>(VertexChannelNames.TextureCoordinate(0));
var weightsChannel = builder.CreateVertexChannel <BoneWeightCollection>(VertexChannelNames.Weights());
var geometry = xmlSubMesh.Geometry;
if (xmlSubMesh.UseSharedGeometry)
{
geometry = xmlMesh.SharedGeometry;
}
foreach (var vertex in geometry.VertexBuffers[0].Vertices)
{
builder.CreatePosition(vertex.Position.AsVector3());
}
foreach (var face in xmlSubMesh.Faces)
{
AddTriangleVertex(builder, xmlMesh, xmlSubMesh, xmlSkeleton, face.Vertex1, normalChannel, uvChannel, weightsChannel);
AddTriangleVertex(builder, xmlMesh, xmlSubMesh, xmlSkeleton, face.Vertex2, normalChannel, uvChannel, weightsChannel);
AddTriangleVertex(builder, xmlMesh, xmlSubMesh, xmlSkeleton, face.Vertex3, normalChannel, uvChannel, weightsChannel);
}
content.Children.Add(builder.FinishMesh());
}
return(content);
}
internal Mesh(PopulatedStructure mesh, BlenderFile file)
{
FileBlock materialArray;
int pointerSize = mesh["mat"].Size;
Name = new string(mesh["id.name"].GetValueAsCharArray()).Split('\0')[0].Substring(2);
ulong mat = mesh["mat"].GetValueAsPointer();
if (mat == 0 || (materialArray = file.GetBlockByAddress(mat)).Size % pointerSize != 0)
{
Materials = new Material[0];
}
else
{
int count = materialArray.Size % pointerSize;
Materials = new Material[count];
for (int i = 0; i < count; i++)
{
Materials[i] = Material.GetOrCreateMaterial(
file,
file.GetStructuresByAddress(
pointerSize == 4 ? BitConverter.ToUInt32(materialArray.Data, count * pointerSize) :
BitConverter.ToUInt64(materialArray.Data, count * pointerSize)
)[0]
);
}
}
float[] vectorTemp = mesh["loc"].GetValueAsFloatArray();
Location = new Vector3(vectorTemp[0], vectorTemp[1], vectorTemp[2]);
vectorTemp = mesh["rot"].GetValueAsFloatArray();
Rotation = new Vector3(vectorTemp[0], vectorTemp[1], vectorTemp[2]);
vectorTemp = mesh["size"].GetValueAsFloatArray();
Size = new Vector3(vectorTemp[0], vectorTemp[1], vectorTemp[2]);
MeshBuilder primordialMesh = MeshBuilder.StartMesh(Name);
// both structures use the same vertex structure
List <Vector3> verts = new List <Vector3>();
List <short[]> unconvertedNormals = new List <short[]>();
foreach (PopulatedStructure s in file.GetStructuresByAddress(mesh["mvert"].GetValueAsPointer()))
{
float[] vector = s["co"].GetValueAsFloatArray();
unconvertedNormals.Add(s["no"].GetValueAsShortArray());
verts.Add(new Vector3(vector[0], vector[1], vector[2]));
}
List <Vector3> normals = convertNormals(unconvertedNormals);
VertexPositionNormalTexture[] vertices;
BasicMaterialContent bmc;
// todo: not yet sure which format versions of Blender between 2.62 and 2.65 use.
if (float.Parse(file.VersionNumber) >= 2.66f) // uses edges, loops, and polys (Blender 2.66+)
{
vertices = loadNewModel(file, mesh, verts, normals, out bmc);
}
else // uses MFace (Blender 2.49-2.61)
{
vertices = loadOldModel(file, mesh, verts, normals, out bmc);
}
MeshBuilder mb = MeshBuilder.StartMesh(Name);
foreach (VertexPositionNormalTexture v in vertices)
{
mb.CreatePosition(v.Position);
}
int uvChannel = mb.CreateVertexChannel <Vector2>(VertexChannelNames.TextureCoordinate(0));
int normalChannel = mb.CreateVertexChannel <Vector3>(VertexChannelNames.Normal());
int j = 0;
foreach (VertexPositionNormalTexture v in vertices)
{
mb.SetVertexChannelData(uvChannel, v.TextureCoordinate);
mb.SetVertexChannelData(normalChannel, v.Normal);
mb.AddTriangleVertex(j++);
}
}
private MeshContent ExtractMesh(aiMesh aiMesh)
{
if (!String.IsNullOrEmpty(aiMesh.mName.Data))
{
log("modelname " + aiMesh.mName.Data);
meshBuilder = MeshBuilder.StartMesh(aiMesh.mName.Data);
}
else
{
meshBuilder = MeshBuilder.StartMesh(Path.GetFileNameWithoutExtension(filename));
}
if (!aiMesh.HasPositions())
{
throw new Exception("MOdel does not have Position");
}
// Add additional vertex channels for texture coordinates and normals
if (aiMesh.HasTextureCoords(0))
{
textureCoordinateDataIndex = meshBuilder.CreateVertexChannel <Vector2>(VertexChannelNames.TextureCoordinate(0));
}
else if (aiMesh.HasVertexColors(0))
{
colorCoordinateDataIndex = meshBuilder.CreateVertexChannel <Vector4>(VertexChannelNames.Color(0));
}
if (aiMesh.HasNormals())
{
normalDataIndex = meshBuilder.CreateVertexChannel <Vector3>(VertexChannelNames.Normal());
}
if (aiMesh.HasTangentsAndBitangents())
{
tangentDataIndex = meshBuilder.CreateVertexChannel <Vector3>(VertexChannelNames.Tangent(0));
binormalDataIndex = meshBuilder.CreateVertexChannel <Vector3>(VertexChannelNames.Binormal(0));
}
if (aiMesh.HasBones())
{
boneDataIndex = meshBuilder.CreateVertexChannel <BoneWeightCollection>(VertexChannelNames.Weights(0));
}
var numFaces = (int)aiMesh.mNumFaces;
var numVertices = (int)aiMesh.mNumVertices;
var aiPositions = aiMesh.mVertices;
var aiNormals = aiMesh.mNormals;
var aiTextureCoordsAll = aiMesh.mTextureCoords;
var aiTextureCoords = (aiTextureCoordsAll != null) ? aiTextureCoordsAll[0] : null;
for (int j = 0; j < aiMesh.mNumVertices; j++)
{
meshBuilder.CreatePosition(aiMesh.mVertices[j].x, aiMesh.mVertices[j].y, aiMesh.mVertices[j].z);
}
meshBuilder.SetMaterial(GetMaterial(aiMesh));
var aiFaces = aiMesh.mFaces;
var dxIndices = new uint[numFaces * 3];
for (int k = 0; k < numFaces; ++k)
{
var aiFace = aiFaces[k];
var aiIndices = aiFace.mIndices;
for (int j = 0; j < 3; ++j)
{
int index = (int)aiIndices[j];
if (aiMesh.HasTextureCoords(0))
{
meshBuilder.SetVertexChannelData(textureCoordinateDataIndex, new Vector2(aiMesh.mTextureCoords[0][index].x, aiMesh.mTextureCoords[0][index].y));
}
else if (aiMesh.HasVertexColors(0))
{
meshBuilder.SetVertexChannelData(colorCoordinateDataIndex, new Vector4(aiMesh.mColors[0][index].r, aiMesh.mColors[0][index].g, aiMesh.mColors[0][index].b, aiMesh.mColors[0][index].a));
}
if (aiMesh.HasNormals())
{
meshBuilder.SetVertexChannelData(normalDataIndex, new Vector3(aiMesh.mNormals[index].x, aiMesh.mNormals[index].y, aiMesh.mNormals[index].z));
}
if (aiMesh.HasTangentsAndBitangents())
{
meshBuilder.SetVertexChannelData(tangentDataIndex, new Vector3(aiMesh.mTangents[index].x, aiMesh.mTangents[index].y, aiMesh.mTangents[index].z));
meshBuilder.SetVertexChannelData(binormalDataIndex, new Vector3(aiMesh.mBitangents[index].x, aiMesh.mBitangents[index].y, aiMesh.mBitangents[index].z));
}
if (aiMesh.HasBones())
{
BoneWeightCollection BoneWeightCollection = new BoneWeightCollection();
if (wbone.ContainsKey(index))
{
foreach (var item in wbone[index])
{
BoneWeightCollection.Add(new BoneWeight(item.Key, item.Value));
}
}
meshBuilder.SetVertexChannelData(boneDataIndex, BoneWeightCollection);
}
meshBuilder.AddTriangleVertex(index);
}
}
MeshContent meshContent = meshBuilder.FinishMesh();
return(meshContent);
}
public override NodeContent Import(string filename, ContentImporterContext context)
{
context.Logger.LogMessage("Importing H3D file: {0}", filename);
_identity = new ContentIdentity(filename, GetType().Name);
_rootNode = new NodeContent()
{
Identity = _identity, Name = "RootNode"
};
var scene = FormatIdentifier.IdentifyAndOpen(filename);
var model = scene.Models[0];
if (!scene.Textures.Any())
{
var path = Path.Combine(Path.GetDirectoryName(filename), $"{Path.GetFileNameWithoutExtension(filename)}@Textures{Path.GetExtension(filename)}");
if (File.Exists(path))
{
context.Logger.LogMessage($"Found texture file {path}. Loading data...");
scene.Merge(FormatIdentifier.IdentifyAndOpen(path, model.Skeleton));
}
else
{
context.Logger.LogMessage($"Couldn't find texture file {path}!");
}
}
// Textures
var textures = new Dictionary <string, Texture2DContent>();
foreach (var texture in scene.Textures)
{
var bitmapContent = new PixelBitmapContent <Color>(texture.Width, texture.Height)
{
Identity = _identity,
Name = texture.Name
};
bitmapContent.SetPixelData(texture.ToRGBA());
var textureContent = new Texture2DContent()
{
Identity = _identity,
Name = texture.Name
};
textureContent.Faces[0].Add(bitmapContent);
textures.Add(textureContent.Name, textureContent);
}
// Materials
var materials = new Dictionary <string, H3DMaterialContent>();
foreach (var material in model.Materials)
{
#if DEBUG
var hlslCode = new HLSLShaderGenerator(material.MaterialParams)
{
BoneCount = model.Skeleton.Count
}.GetShader();
var glslCode = new GLSLFragmentShaderGenerator(material.MaterialParams).GetFragShader();
#endif
var materialContent = new H3DMaterialContent()
{
Identity = _identity,
Name = material.Name,
Effect = new EffectContent
{
Identity = _identity,
Name = "H3DEffect",
EffectCode = new HLSLShaderGenerator(material.MaterialParams)
{
BoneCount = model.Skeleton.Count
}.GetShader()
},
Material = material.Name,
FaceCulling = (H3DFaceCulling?)material.MaterialParams.FaceCulling,
EmissionColor = material.MaterialParams.EmissionColor.ToXNA(),
AmbientColor = material.MaterialParams.AmbientColor.ToXNA(),
DiffuseColor = material.MaterialParams.DiffuseColor.ToXNA(),
Specular0Color = material.MaterialParams.Specular0Color.ToXNA(),
Specular1Color = material.MaterialParams.Specular1Color.ToXNA(),
Constant0Color = material.MaterialParams.Constant0Color.ToXNA(),
Constant1Color = material.MaterialParams.Constant1Color.ToXNA(),
Constant2Color = material.MaterialParams.Constant2Color.ToXNA(),
Constant3Color = material.MaterialParams.Constant3Color.ToXNA(),
Constant4Color = material.MaterialParams.Constant4Color.ToXNA(),
Constant5Color = material.MaterialParams.Constant5Color.ToXNA(),
BlendColor = material.MaterialParams.BlendColor.ToXNA(),
DepthBufferRead = material.MaterialParams.DepthBufferRead,
DepthBufferWrite = material.MaterialParams.DepthBufferWrite,
StencilBufferRead = material.MaterialParams.StencilBufferRead,
StencilBufferWrite = material.MaterialParams.StencilBufferWrite,
};
var texCount = 0;
if (material.EnabledTextures[0])
{
texCount++;
}
if (material.EnabledTextures[1])
{
texCount++;
}
if (material.EnabledTextures[2])
{
texCount++;
}
materialContent.TextureList = new Texture2DContent[texCount];
if (material.EnabledTextures[0])
{
materialContent.TextureList[0] = textures[material.Texture0Name];
}
if (material.EnabledTextures[1])
{
materialContent.TextureList[1] = textures[material.Texture1Name];
}
if (material.EnabledTextures[2])
{
materialContent.TextureList[2] = textures[material.Texture2Name];
}
materialContent.TextureSamplerSettings = material.TextureMappers.Select(tm => new TextureSamplerSettings()
{
WrapU = tm.WrapU.ToXNAWrap(),
WrapV = tm.WrapV.ToXNAWrap(),
MagFilter = (TextureSamplerSettings.TextureMagFilter)tm.MagFilter,
MinFilter = (TextureSamplerSettings.TextureMinFilter)tm.MinFilter
}).ToArray();
materials.Add(material.Name, materialContent);
}
// Geometry
var meshes = new List <MeshContent>();
for (var i = 0; i < model.Meshes.Count; i++)
{
var modelMesh = model.Meshes[i];
if (modelMesh.Type == H3DMeshType.Silhouette)
{
continue;
}
var mesh = new MeshContent()
{
Identity = _identity,
Name = $"{model.Materials[modelMesh.MaterialIndex].Name}_node{i}",
};
var geometry = new GeometryContent
{
Identity = _identity,
Material = materials[model.Materials[modelMesh.MaterialIndex].Name]
};
var vertices = GetWorldSpaceVertices(model.Skeleton, modelMesh);
var baseVertex = mesh.Positions.Count;
foreach (var vertex in vertices)
{
mesh.Positions.Add(vertex.Position.ToVector3());
}
geometry.Vertices.AddRange(Enumerable.Range(baseVertex, vertices.Length));
foreach (var attribute in modelMesh.Attributes)
{
if (attribute.Name >= PICAAttributeName.BoneIndex)
{
continue;
}
switch (attribute.Name)
{
case PICAAttributeName.Position: break; // Already added
case PICAAttributeName.Normal:
geometry.Vertices.Channels.Add(VertexChannelNames.Normal(0), vertices.Select(vertex => vertex.Normal.ToVector3()));
break;
case PICAAttributeName.Tangent:
geometry.Vertices.Channels.Add(VertexChannelNames.Tangent(0), vertices.Select(vertex => vertex.Tangent.ToVector3()));
break;
case PICAAttributeName.Color:
geometry.Vertices.Channels.Add(VertexChannelNames.Color(0), vertices.Select(vertex => vertex.Color.ToColor()));
break;
case PICAAttributeName.TexCoord0:
geometry.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(0), vertices.Select(vertex => vertex.TexCoord0.ToVector2().ToUV()));
break;
case PICAAttributeName.TexCoord1:
geometry.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(1), vertices.Select(vertex => vertex.TexCoord1.ToVector2().ToUV()));
break;
case PICAAttributeName.TexCoord2:
geometry.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(2), vertices.Select(vertex => vertex.TexCoord2.ToVector2().ToUV()));
break;
}
}
var vertexOffset = 0;
var xnaWeights = new List <BoneWeightCollection>();
foreach (var modelSubMesh in modelMesh.SubMeshes)
{
geometry.Indices.AddRange(modelSubMesh.Indices.Select(index => (int)index));
var vertexCount = modelSubMesh.MaxIndex + 1 - vertexOffset;
var subMeshVertices = vertices.Skip(vertexOffset).Take(vertexCount).ToList();
if (modelSubMesh.Skinning == H3DSubMeshSkinning.Smooth)
{
foreach (var vertex in subMeshVertices)
{
var list = new BoneWeightCollection();
for (var index = 0; index < 4; index++)
{
var bIndex = vertex.Indices[index];
var weight = vertex.Weights[index];
if (weight == 0)
{
break;
}
if (bIndex < modelSubMesh.BoneIndicesCount && bIndex > -1)
{
bIndex = modelSubMesh.BoneIndices[bIndex];
}
else
{
bIndex = 0;
}
list.Add(new BoneWeight(model.Skeleton[bIndex].Name, weight));
}
xnaWeights.Add(list);
}
}
else
{
foreach (var vertex in vertices)
{
var bIndex = vertex.Indices[0];
if (bIndex < modelSubMesh.BoneIndices.Length && bIndex > -1)
{
bIndex = modelSubMesh.BoneIndices[bIndex];
}
else
{
bIndex = 0;
}
xnaWeights.Add(new BoneWeightCollection()
{
new BoneWeight(model.Skeleton[bIndex].Name, 0)
});
}
}
vertexOffset += vertexCount;
}
geometry.Vertices.Channels.Add(VertexChannelNames.Weights(0), xnaWeights);
mesh.Geometry.Add(geometry);
meshes.Add(mesh);
}
foreach (var mesh in meshes)
{
_rootNode.Children.Add(mesh);
}
var rootBone = ImportBones(model);
_rootNode.Children.Add(rootBone);
if (!scene.SkeletalAnimations.Any())
{
var path = Path.Combine(Path.GetDirectoryName(filename), $"{Path.GetFileNameWithoutExtension(filename)}@Animations{Path.GetExtension(filename)}");
if (File.Exists(path))
{
context.Logger.LogMessage($"Found animation file {path}. Loading data...");
scene.Merge(FormatIdentifier.IdentifyAndOpen(path, model.Skeleton));
}
else
{
context.Logger.LogMessage($"Couldn't find animation file {path}!");
}
}
foreach (var animation in ImportSkeletalAnimations(scene))
{
rootBone.Animations.Add(animation.Name, animation);
}
foreach (var animation in ImportMaterialAnimations(scene))
{
_rootNode.Children.Add(animation);
}
return(_rootNode);
}
public override NodeContent Import(string filename, ContentImporterContext context)
{
ContentIdentity identity = new ContentIdentity(filename, GetType().Name);
const int MAX_BONE_WEIGHTS = 4;
VertexBoneWeightLimitConfig boneConfig = new VertexBoneWeightLimitConfig(MAX_BONE_WEIGHTS);
AssimpImporter importer = new AssimpImporter();
importer.SetConfig(boneConfig);
importer.AttachLogStream(new LogStream((msg, userData) => context.Logger.LogMessage(msg)));
Scene scene = importer.ImportFile(filename,
PostProcessSteps.FlipUVs |
PostProcessSteps.JoinIdenticalVertices |
PostProcessSteps.Triangulate |
PostProcessSteps.SortByPrimitiveType |
PostProcessSteps.FindInvalidData |
PostProcessSteps.LimitBoneWeights |
PostProcessSteps.FixInFacingNormals);
// Root node
NodeContent rootNode = new NodeContent
{
Name = scene.RootNode.Name,
Identity = identity,
Transform = Matrix.Transpose(ToXna(scene.RootNode.Transform))
};
// Materials
MaterialContent[] materials = new MaterialContent[scene.MaterialCount];
for (int m = 0; m < scene.MaterialCount; m++)
{
materials[m] = new BasicMaterialContent();
materials[m].Identity = identity;
// For some reason, there is all kinds of nasty junk in this string:
materials[m].Name = CleanInput(scene.Materials[m].Name);
for (int t = 0; t < scene.Materials[m].GetTextureCount(TextureType.Diffuse); t++)
{
TextureSlot diffuseMap = scene.Materials[m].GetTexture(TextureType.Diffuse, t);
if (!String.IsNullOrEmpty(diffuseMap.FilePath))
{
materials[m].Textures.Add("Texture" + (t > 0 ? t.ToString() : ""),
new ExternalReference <TextureContent>(diffuseMap.FilePath, identity));
}
}
}
// Bones
// We find 'mesh container' nodes with the best names for those meshes while looking for the bones,
// and will need them later when we create the MeshContents. I have a feeling that this won't work
// in general, and may need to be made more robust.
Dictionary <Mesh, string> meshNames = new Dictionary <Mesh, string>();
Dictionary <Node, BoneContent> nodeToBoneMap = new Dictionary <Node, BoneContent>();
BoneContent skeleton = null; // The root bone for the model.
List <Node> hierarchyNodes = scene.RootNode.Children.SelectDeep(n => n.Children).ToList();
foreach (Node node in hierarchyNodes)
{
BoneContent bone = new BoneContent
{
Name = node.Name,
Transform = Matrix.Transpose(ToXna(node.Transform))
};
if (node.MeshIndices != null)
{
// This node is a 'mesh container' instead of a bone, so we only care about extracting the name of the mesh.
foreach (int meshIndex in node.MeshIndices)
{
if (!meshNames.ContainsKey(scene.Meshes[meshIndex]))
{
meshNames.Add(scene.Meshes[meshIndex], node.Name);
}
}
}
else if (node.Parent == scene.RootNode)
{
if (skeleton == null)
{
// This will be our skeleton so put the animations here:
if (scene.HasAnimations)
{
foreach (Animation assimpAnim in scene.Animations)
{
if (assimpAnim.HasNodeAnimations)
{
AnimationContent newAnim = new AnimationContent();
newAnim.Identity = identity;
newAnim.Duration = TimeSpan.FromSeconds(assimpAnim.DurationInTicks / assimpAnim.TicksPerSecond);
newAnim.Name = assimpAnim.Name;
foreach (NodeAnimationChannel nac in assimpAnim.NodeAnimationChannels)
{
Node animatedNode = hierarchyNodes.Find(n => n.Name == nac.NodeName);
AnimationChannel newChan = BuildAnimtionChannel(animatedNode, nac);
newAnim.Channels.Add(nac.NodeName, newChan);
}
if (String.IsNullOrEmpty(assimpAnim.Name))
{
bone.Animations.Add("SkelematorNoAnimationName", newAnim);
}
else
{
bone.Animations.Add(assimpAnim.Name, newAnim);
}
}
}
}
rootNode.Children.Add(bone);
skeleton = bone;
}
else
{
context.Logger.LogWarning(null, identity, "Found multiple skeletons in the model, throwing extras away...");
}
}
else
{
BoneContent parent = nodeToBoneMap[node.Parent];
parent.Children.Add(bone);
}
nodeToBoneMap.Add(node, bone);
}
// Meshes
Dictionary <Mesh, MeshContent> meshes = new Dictionary <Mesh, MeshContent>();
foreach (Mesh sceneMesh in scene.Meshes)
{
// See comment about meshNames at the beginning of the bone section.
MeshBuilder mb = MeshBuilder.StartMesh(meshNames[sceneMesh]);
mb.SwapWindingOrder = true; // Appears to require this...
int positionIndex = -1;
for (int v = 0; v < sceneMesh.VertexCount; v++)
{
Vector3D vert = sceneMesh.Vertices[v];
// CreatePosition should just return a 0-based index of the newly added vertex.
positionIndex = mb.CreatePosition(new Vector3(vert.X, vert.Y, vert.Z));
if (positionIndex != v)
{
throw new InvalidContentException("Something unexpected happened while building a MeshContent from the Assimp scene mesh's vertices. The scene mesh may contains duplicate vertices.");
}
}
if (positionIndex + 1 < 3)
{
throw new InvalidContentException("There were not enough vertices in the Assimp scene mesh.");
}
// Create vertex channels
int normalVertexChannelIndex = mb.CreateVertexChannel <Vector3>(VertexChannelNames.Normal());
int[] texCoordVertexChannelIndex = new int[sceneMesh.TextureCoordsChannelCount];
for (int x = 0; x < sceneMesh.TextureCoordsChannelCount; x++)
{
texCoordVertexChannelIndex[x] = mb.CreateVertexChannel <Vector2>(VertexChannelNames.TextureCoordinate(x));
}
int boneWeightVertexChannelIndex = -1;
if (sceneMesh.HasBones)
{
boneWeightVertexChannelIndex = mb.CreateVertexChannel <BoneWeightCollection>(VertexChannelNames.Weights());
}
// Prepare vertex channel data
BoneWeightCollection[] boneWeightData = null;
if (sceneMesh.HasBones)
{
boneWeightData = new BoneWeightCollection[sceneMesh.VertexCount];
for (int v = 0; v < sceneMesh.VertexCount; v++)
{
boneWeightData[v] = new BoneWeightCollection();
}
foreach (Bone sceneMeshBone in sceneMesh.Bones)
{
// We have to assume that the bone's name matches up with a node, and therefore one of our BoneContents.
foreach (VertexWeight sceneMeshBoneWeight in sceneMeshBone.VertexWeights)
{
boneWeightData[sceneMeshBoneWeight.VertexID].Add(new BoneWeight(sceneMeshBone.Name, sceneMeshBoneWeight.Weight));
}
}
for (int v = 0; v < sceneMesh.VertexCount; v++)
{
if (boneWeightData[v].Count <= 0)
{
throw new InvalidContentException("Encountered vertices without bone weights.");
}
boneWeightData[v].NormalizeWeights();
}
}
// Set the per-geometry data
mb.SetMaterial(materials[sceneMesh.MaterialIndex]);
mb.SetOpaqueData(new OpaqueDataDictionary());
// Add each vertex
for (int f = 0; f < sceneMesh.FaceCount; f++)
{
if (sceneMesh.Faces[f].IndexCount != 3)
{
throw new InvalidContentException("Only triangular faces allowed.");
}
for (int t = 0; t < 3; t++)
{
mb.SetVertexChannelData(normalVertexChannelIndex, ToXna(sceneMesh.Normals[sceneMesh.Faces[f].Indices[t]]));
for (int x = 0; x < sceneMesh.TextureCoordsChannelCount; x++)
{
mb.SetVertexChannelData(texCoordVertexChannelIndex[x], ToXnaVector2((sceneMesh.GetTextureCoords(x))[sceneMesh.Faces[f].Indices[t]]));
}
if (sceneMesh.HasBones)
{
mb.SetVertexChannelData(boneWeightVertexChannelIndex, boneWeightData[sceneMesh.Faces[f].Indices[t]]);
}
mb.AddTriangleVertex((int)(sceneMesh.Faces[f].Indices[t]));
}
}
MeshContent mesh = mb.FinishMesh();
rootNode.Children.Add(mesh);
meshes.Add(sceneMesh, mesh);
}
return(rootNode);
}
/// <summary>
/// The importer's entry point.
/// Called by the framework when importing a game asset.
/// </summary>
/// <param name="filename">Name of a game asset file.</param>
/// <param name="context">
/// Contains information for importing a game asset, such as a logger interface.
/// </param>
/// <returns>Resulting game asset.</returns>
public override NodeContent Import(string filename, ContentImporterContext context)
{
NodeContent rootNode = new NodeContent
{
Identity = new ContentIdentity(filename),
Name = Path.GetFileNameWithoutExtension(filename)
};
try
{
// Import file using Meshellator.
Scene scene = MeshellatorLoader.ImportFromFile(filename);
// Create materials.
//System.Diagnostics.Debugger.Launch();
Dictionary <Material, MaterialContent> materials = GetMaterials(scene);
// Convert Meshellator scene to XNA mesh.
foreach (Mesh mesh in scene.Meshes)
{
MeshContent meshContent = new MeshContent
{
Name = mesh.Name
};
foreach (Point3D position in mesh.Positions)
{
meshContent.Positions.Add(ConvertPoint3D(position));
}
MaterialContent material = (mesh.Material != null)
? materials[mesh.Material]
: new BasicMaterialContent
{
DiffuseColor = new Vector3(0.5f),
VertexColorEnabled = false
};
GeometryContent geometryContent = new GeometryContent
{
Material = material
};
meshContent.Geometry.Add(geometryContent);
geometryContent.Indices.AddRange(mesh.Indices);
for (int i = 0; i < mesh.Positions.Count; ++i)
{
geometryContent.Vertices.Add(i);
}
List <Vector2> textureCoordinates = new List <Vector2>();
for (int i = 0; i < mesh.Positions.Count; ++i)
{
Vector2 textureCoordinate = (i < mesh.TextureCoordinates.Count)
? ConvertTextureCoordinate(mesh.TextureCoordinates[i])
: Vector2.Zero;
textureCoordinates.Add(textureCoordinate);
}
geometryContent.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(0), textureCoordinates);
List <Vector3> normals = new List <Vector3>();
foreach (Vector3D normal in mesh.Normals)
{
normals.Add(ConvertVector3D(normal));
}
geometryContent.Vertices.Channels.Add(VertexChannelNames.Normal(), normals);
// Finish the mesh and set the transform.
if (SwapWindingOrder)
{
MeshHelper.SwapWindingOrder(meshContent);
}
meshContent.Transform = ConvertTransform(mesh.Transform);
// Add the mesh to the model
rootNode.Children.Add(meshContent);
}
return(rootNode);
}
catch (InvalidContentException)
{
// InvalidContentExceptions do not need further processing
throw;
}
catch (Exception e)
{
// Wrap exception with content identity (includes line number)
throw new InvalidContentException(
"Unable to parse file. Exception:\n" + e.ToString(),
rootNode.Identity, e);
}
}
private void ValidateMorphTarget(MeshContent morphTarget)
{
// Check whether morph target is the child of the base mesh.
var baseMesh = morphTarget.Parent as MeshContent;
if (baseMesh == null)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Morph target \"{0}\" needs to be a child of (linked to) the base mesh.",
morphTarget.Name);
throw new InvalidContentException(message, morphTarget.Identity);
}
// Check whether number of positions matches.
if (baseMesh.Positions.Count != morphTarget.Positions.Count)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Number of positions in morph target \"{0}\" does not match base mesh. (Base mesh: {1}, morph target: {2})",
morphTarget.Name, baseMesh.Positions.Count, morphTarget.Positions.Count);
throw new InvalidContentException(message, morphTarget.Identity);
}
// Check whether number of submeshes matches.
int numberOfSubmeshes = baseMesh.Geometry.Count;
if (numberOfSubmeshes != morphTarget.Geometry.Count)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Number of submeshes in morph target \"{0}\" does not match base mesh. (Base mesh: {1}, morph target: {2})",
morphTarget.Name, numberOfSubmeshes, morphTarget.Geometry.Count);
throw new InvalidContentException(message, morphTarget.Identity);
}
for (int i = 0; i < numberOfSubmeshes; i++)
{
var baseGeometry = baseMesh.Geometry[i];
var morphGeometry = morphTarget.Geometry[i];
// Check whether number of vertices matches.
if (baseGeometry.Vertices.VertexCount != morphGeometry.Vertices.VertexCount)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Number vertices in morph target \"{0}\" does not match base mesh.",
morphTarget.Name);
throw new InvalidContentException(message, morphTarget.Identity);
}
// Check for "Normal" channel.
if (!baseGeometry.Vertices.Channels.Contains(VertexChannelNames.Normal()))
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Normal vectors missing in base mesh \"{0}\".",
morphTarget.Name);
throw new InvalidContentException(message, morphTarget.Identity);
}
if (!morphGeometry.Vertices.Channels.Contains(VertexChannelNames.Normal()))
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Normal vectors missing in morph target \"{0}\".",
morphTarget.Name);
throw new InvalidContentException(message, morphTarget.Identity);
}
int baseNormalsCount = baseGeometry.Vertices.Channels[VertexChannelNames.Normal()].Count;
int morphNormalsCount = morphGeometry.Vertices.Channels[VertexChannelNames.Normal()].Count;
if (baseNormalsCount != morphNormalsCount)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Number of vertices in morph target \"{0}\" (submesh: {1}) does not match base mesh. (Base mesh: {2}, morph target: {3})",
morphTarget.Name, i, baseNormalsCount, morphNormalsCount);
throw new InvalidContentException(message, morphTarget.Identity);
}
// Check whether number of indices matches.
if (baseGeometry.Indices.Count != morphGeometry.Indices.Count)
{
string message = String.Format(
CultureInfo.InvariantCulture,
"Indices in morph target \"{0}\" do not match base mesh.",
morphTarget.Name);
throw new InvalidContentException(message, morphTarget.Identity);
}
}
// Check whether morph target has children.
if (morphTarget.Children.Count > 0)
{
_context.Logger.LogWarning(
null, _input.Identity,
"The children of the morph target \"{0}\" will be ignored.",
morphTarget.Name);
}
}
} // Process
#endregion
#region Process Vertex Channel
/// <summary>
/// Processes geometry content vertex channels at the specified index.
/// </summary>
protected override void ProcessVertexChannel(GeometryContent geometry, int vertexChannelIndex, ContentProcessorContext context)
{
// Compressed Vertex Data
VertexChannelCollection channels = geometry.Vertices.Channels;
string name = channels[vertexChannelIndex].Name;
if (name == VertexChannelNames.Normal())
{
channels.ConvertChannelContent <NormalizedShort4>(vertexChannelIndex);
}
else if (name == VertexChannelNames.TextureCoordinate(0))
{
// If the resource has texture coordinates outside the range [-1, 1] the values will be clamped.
channels.ConvertChannelContent <HalfVector2>(vertexChannelIndex);
}
else if (name == VertexChannelNames.TextureCoordinate(1))
{
channels.Remove(VertexChannelNames.TextureCoordinate(1));
}
else if (name == VertexChannelNames.TextureCoordinate(2))
{
channels.Remove(VertexChannelNames.TextureCoordinate(2));
}
else if (name == VertexChannelNames.TextureCoordinate(3))
{
channels.Remove(VertexChannelNames.TextureCoordinate(3));
}
else if (name == VertexChannelNames.TextureCoordinate(4))
{
channels.Remove(VertexChannelNames.TextureCoordinate(4));
}
else if (name == VertexChannelNames.TextureCoordinate(5))
{
channels.Remove(VertexChannelNames.TextureCoordinate(5));
}
else if (name == VertexChannelNames.TextureCoordinate(6))
{
channels.Remove(VertexChannelNames.TextureCoordinate(6));
}
else if (name == VertexChannelNames.TextureCoordinate(7))
{
channels.Remove(VertexChannelNames.TextureCoordinate(7));
}
else if (name == VertexChannelNames.Color(0))
{
channels.Remove(VertexChannelNames.Color(0));
}
else if (name == VertexChannelNames.Tangent(0))
{
channels.ConvertChannelContent <NormalizedShort4>(vertexChannelIndex);
}
else if (name == VertexChannelNames.Binormal(0))
{
// Not need to get rid of the binormal data because the model will use more than 32 bytes per vertex.
// We can actually try to align the data to 64 bytes per vertex.
channels.ConvertChannelContent <NormalizedShort4>(vertexChannelIndex);
}
else
{
// Blend indices, blend weights and everything else.
// Don't use "BlendWeight0" as a name, nor weights0. Both names don't work.
base.ProcessVertexChannel(geometry, vertexChannelIndex, context);
channels.ConvertChannelContent <Byte4>("BlendIndices0");
channels.ConvertChannelContent <NormalizedShort4>(VertexChannelNames.EncodeName(VertexElementUsage.BlendWeight, 0));
}
} // ProcessVertexChannel
/// <summary>
/// Import a VOX file as Model
/// </summary>
private NodeContent VoxelProcess(VoxelContent voxel, ContentImporterContext context)
{
XYZI[] voxels = voxel.Voxels;
uint[] palette = voxel.Palette;
var scale = voxel.RealSize / voxel.GridSize;
Vector3 centerOffset = new Vector3(1f, 0f, 1f) * (voxel.RealSize / -2f);
var corner000 = new Point3(0, 0, 0);
var corner100 = new Point3(1, 0, 0);
var corner010 = new Point3(0, 1, 0);
var corner110 = new Point3(1, 1, 0);
var corner001 = new Point3(0, 0, 1);
var corner101 = new Point3(1, 0, 1);
var corner011 = new Point3(0, 1, 1);
var corner111 = new Point3(1, 1, 1);
var Forward = Vector3.Forward;
var Backward = Vector3.Backward;
var Left = Vector3.Left;
var Right = Vector3.Right;
var Up = Vector3.Up;
var Down = Vector3.Down;
for (int i = 0; i < voxels.Length; i++)
{
var pt000 = voxels[i].Point.Add(ref corner000);
var pt100 = voxels[i].Point.Add(ref corner100);
var pt010 = voxels[i].Point.Add(ref corner010);
var pt110 = voxels[i].Point.Add(ref corner110);
var pt001 = voxels[i].Point.Add(ref corner001);
var pt101 = voxels[i].Point.Add(ref corner101);
var pt011 = voxels[i].Point.Add(ref corner011);
var pt111 = voxels[i].Point.Add(ref corner111);
// back
var p0 = pt000.ToVector3();
var p1 = pt100.ToVector3();
var p2 = pt010.ToVector3();
var p3 = pt110.ToVector3();
// front
var p4 = pt001.ToVector3();
var p5 = pt101.ToVector3();
var p6 = pt011.ToVector3();
var p7 = pt111.ToVector3();
Vector3.Multiply(ref p0, ref scale, out p0); Vector3.Add(ref p0, ref centerOffset, out p0);
Vector3.Multiply(ref p1, ref scale, out p1); Vector3.Add(ref p1, ref centerOffset, out p1);
Vector3.Multiply(ref p2, ref scale, out p2); Vector3.Add(ref p2, ref centerOffset, out p2);
Vector3.Multiply(ref p3, ref scale, out p3); Vector3.Add(ref p3, ref centerOffset, out p3);
Vector3.Multiply(ref p4, ref scale, out p4); Vector3.Add(ref p4, ref centerOffset, out p4);
Vector3.Multiply(ref p5, ref scale, out p5); Vector3.Add(ref p5, ref centerOffset, out p5);
Vector3.Multiply(ref p6, ref scale, out p6); Vector3.Add(ref p6, ref centerOffset, out p6);
Vector3.Multiply(ref p7, ref scale, out p7); Vector3.Add(ref p7, ref centerOffset, out p7);
vertex.Color.PackedValue = palette[voxels[i].ColorIndex];
if ((voxels[i].SharedSides & Sides.Forward) == 0)
{
vertex.Normal = Forward;
AddVertex(ref p1);
AddVertex(ref p3);
AddVertex(ref p0);
AddVertex(ref p0);
AddVertex(ref p3);
AddVertex(ref p2);
}
if ((voxels[i].SharedSides & Sides.Backward) == 0)
{
vertex.Normal = Backward;
AddVertex(ref p4);
AddVertex(ref p6);
AddVertex(ref p5);
AddVertex(ref p5);
AddVertex(ref p6);
AddVertex(ref p7);
}
if ((voxels[i].SharedSides & Sides.Left) == 0)
{
vertex.Normal = Left;
AddVertex(ref p2);
AddVertex(ref p6);
AddVertex(ref p0);
AddVertex(ref p0);
AddVertex(ref p6);
AddVertex(ref p4);
}
if ((voxels[i].SharedSides & Sides.Right) == 0)
{
vertex.Normal = Right;
AddVertex(ref p1);
AddVertex(ref p5);
AddVertex(ref p3);
AddVertex(ref p3);
AddVertex(ref p5);
AddVertex(ref p7);
}
if ((voxels[i].SharedSides & Sides.Up) == 0)
{
vertex.Normal = Up;
AddVertex(ref p7);
AddVertex(ref p6);
AddVertex(ref p3);
AddVertex(ref p3);
AddVertex(ref p6);
AddVertex(ref p2);
}
if ((voxels[i].SharedSides & Sides.Down) == 0)
{
vertex.Normal = Down;
AddVertex(ref p5);
AddVertex(ref p1);
AddVertex(ref p4);
AddVertex(ref p4);
AddVertex(ref p1);
AddVertex(ref p0);
}
}
MeshContent mesh = new MeshContent();
mesh.Name = "voxel";
for (int pi = 0; pi < this.vertices.Count; pi++)
{
mesh.Positions.Add(this.vertices[pi].Position);
}
var geom = new GeometryContent();
mesh.Geometry.Add(geom);
BasicMaterialContent material = new BasicMaterialContent();
geom.Material = material;
for (int pi = 0; pi < this.vertices.Count; pi++)
{
geom.Vertices.Add(pi);
}
for (int ii = 0; ii < this.indices.Count; ii++)
{
geom.Indices.Add(this.indices[ii]);
}
List <Vector3> normals = new List <Vector3>();
List <Color> colors = new List <Color>();
for (int vi = 0; vi < this.vertices.Count; vi++)
{
var vertex = vertices[vi];
normals.Add(vertex.Normal);
colors.Add(vertex.Color);
}
geom.Vertices.Channels.Add <Vector3>(VertexChannelNames.Normal(0), normals);
geom.Vertices.Channels.Add <Color>(VertexChannelNames.Color(0), colors);
return(mesh);
}
private static void MakeRelativeMorphTargets(MeshContent baseMesh, List <MeshContent> morphTargets)
{
foreach (var morphTarget in morphTargets)
{
// Make positions relative to base mesh.
// (Positions are stored in MeshContent.Positions.)
var basePositions = baseMesh.Positions;
var morphPositions = morphTarget.Positions;
int numberOfPositions = basePositions.Count;
for (int i = 0; i < numberOfPositions; i++)
{
morphPositions[i] -= basePositions[i];
}
// Make normals relative to base mesh.
// (Normals are stored as a vertex channel per submesh.)
int numberOfSubmeshes = baseMesh.Geometry.Count;
for (int i = 0; i < numberOfSubmeshes; i++)
{
var baseGeometry = baseMesh.Geometry[i];
var morphGeometry = morphTarget.Geometry[i];
var baseNormals = baseGeometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal());
var morphNormals = morphGeometry.Vertices.Channels.Get <Vector3>(VertexChannelNames.Normal());
int numberOfNormals = baseNormals.Count;
for (int j = 0; j < numberOfNormals; j++)
{
morphNormals[j] -= baseNormals[j];
}
}
}
}
private MeshContent CreateMesh(Mesh sceneMesh)
{
var mesh = new MeshContent {
Name = sceneMesh.Name
};
// Position vertices are shared at the mesh level
foreach (var vert in sceneMesh.Vertices)
{
mesh.Positions.Add(new Vector3(vert.X, vert.Y, vert.Z));
}
var geom = new GeometryContent
{
Material = _materials[sceneMesh.MaterialIndex]
};
// Geometry vertices reference 1:1 with the MeshContent parent,
// no indirection is necessary.
//geom.Vertices.Positions.AddRange(mesh.Positions);
geom.Vertices.AddRange(Enumerable.Range(0, sceneMesh.VertexCount));
geom.Indices.AddRange(sceneMesh.GetIndices());
if (sceneMesh.HasBones)
{
var xnaWeights = new List <BoneWeightCollection>();
for (var i = 0; i < geom.Indices.Count; i++)
{
var list = new BoneWeightCollection();
for (var boneIndex = 0; boneIndex < sceneMesh.BoneCount; boneIndex++)
{
var bone = sceneMesh.Bones[boneIndex];
foreach (var weight in bone.VertexWeights)
{
if (weight.VertexID != i)
{
continue;
}
list.Add(new BoneWeight(bone.Name, weight.Weight));
}
}
if (list.Count > 0)
{
xnaWeights.Add(list);
}
}
geom.Vertices.Channels.Add(VertexChannelNames.Weights(0), xnaWeights);
}
// Individual channels go here
if (sceneMesh.HasNormals)
{
geom.Vertices.Channels.Add(VertexChannelNames.Normal(), ToXna(sceneMesh.Normals));
}
for (var i = 0; i < sceneMesh.TextureCoordinateChannelCount; i++)
{
geom.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(i),
ToXnaTexCoord(sceneMesh.TextureCoordinateChannels[i]));
}
mesh.Geometry.Add(geom);
return(mesh);
}
} // Process
#endregion
#region Process Vertex Channel
/// <summary>
/// Processes geometry content vertex channels at the specified index.
/// </summary>
protected override void ProcessVertexChannel(GeometryContent geometry, int vertexChannelIndex, ContentProcessorContext context)
{
VertexChannelCollection channels = geometry.Vertices.Channels;
// If the model has only position and normals a UV channel is added.
// http://xnafinalengine.codeplex.com/wikipage?title=Compressed%20Vertex%20Data
if (channels.Count == 1 && channels.Contains(VertexChannelNames.Normal()))
{
channels.Add<Vector2>(VertexChannelNames.TextureCoordinate(0), null);
}
// If the model has position, normal and UV then the data is packed on 32 bytes aliagned vertex data.
if (channels.Count == 2 && channels.Contains(VertexChannelNames.Normal()) && channels.Contains(VertexChannelNames.TextureCoordinate(0)))
{
// No compressed Vertex Data
base.ProcessVertexChannel(geometry, vertexChannelIndex, context);
}
else // If not then the data is compressed.
{
string name = channels[vertexChannelIndex].Name;
if (name == VertexChannelNames.Normal())
{
channels.ConvertChannelContent<NormalizedShort4>(vertexChannelIndex);
}
else if (name == VertexChannelNames.TextureCoordinate(0))
{
// Clamp values.
/*for (int i = 0; i < channels[vertexChannelIndex].Count; i++)
{
Vector2 uv = (Vector2)channels[vertexChannelIndex][i];
if (uv.X < 0)
uv.X *= -1;
if (uv.Y < 0)
uv.Y *= -1;
Vector2 uvCampled = new Vector2(uv.X - (float)Math.Truncate(uv.X), uv.Y - (float)Math.Truncate(uv.Y));
channels[vertexChannelIndex][i] = uvCampled;
}
// If the resource has texture coordinates outside the range [-1, 1] the values will be clamped.
channels.ConvertChannelContent<NormalizedShort2>(vertexChannelIndex);*/
// Sometimes you can't just clamp values, because the distance between vertices surpass 1 uv unit.
// And given that I am not removing the binormals I won't normalize the UVs.
channels.ConvertChannelContent<HalfVector2>(vertexChannelIndex);
}
else if (name == VertexChannelNames.TextureCoordinate(1))
channels.Remove(VertexChannelNames.TextureCoordinate(1));
else if (name == VertexChannelNames.TextureCoordinate(2))
channels.Remove(VertexChannelNames.TextureCoordinate(2));
else if (name == VertexChannelNames.TextureCoordinate(3))
channels.Remove(VertexChannelNames.TextureCoordinate(3));
else if (name == VertexChannelNames.TextureCoordinate(4))
channels.Remove(VertexChannelNames.TextureCoordinate(4));
else if (name == VertexChannelNames.TextureCoordinate(5))
channels.Remove(VertexChannelNames.TextureCoordinate(5));
else if (name == VertexChannelNames.TextureCoordinate(6))
channels.Remove(VertexChannelNames.TextureCoordinate(6));
else if (name == VertexChannelNames.TextureCoordinate(7))
channels.Remove(VertexChannelNames.TextureCoordinate(7));
else if (name == VertexChannelNames.Color(0))
channels.Remove(VertexChannelNames.Color(0));
else if (name == VertexChannelNames.Tangent(0))
{
channels.ConvertChannelContent<NormalizedShort4>(vertexChannelIndex);
}
else if (name == VertexChannelNames.Binormal(0))
{
channels.ConvertChannelContent<NormalizedShort4>(vertexChannelIndex);
// If the binormal is removed then the position, the normal,
// the tangent and one texture coordinate can be fetched in one single block of 32 bytes.
// Still, it is more fast to just pass the value. At least on the test I made.
//channels.Remove(VertexChannelNames.Binormal(0));
}
else
{
base.ProcessVertexChannel(geometry, vertexChannelIndex, context);
}
}
} // ProcessVertexChannel
public override NodeContent Import(string filename, ContentImporterContext context)
{
var identity = new ContentIdentity(filename, GetType().Name);
var importer = new AssimpImporter();
importer.AttachLogStream(new LogStream((msg, userData) => context.Logger.LogMessage(msg)));
var scene = importer.ImportFile(filename,
PostProcessSteps.FlipUVs | // So far appears necessary
PostProcessSteps.JoinIdenticalVertices |
PostProcessSteps.Triangulate |
PostProcessSteps.SortByPrimitiveType |
PostProcessSteps.FindInvalidData
);
var rootNode = new NodeContent
{
Name = scene.RootNode.Name,
Identity = identity,
Transform = ToXna(scene.RootNode.Transform)
};
// TODO: Materials
var materials = new List <MaterialContent>();
foreach (var sceneMaterial in scene.Materials)
{
var diffuse = sceneMaterial.GetTexture(TextureType.Diffuse, 0);
materials.Add(new BasicMaterialContent()
{
Name = sceneMaterial.Name,
Identity = identity,
Texture = new ExternalReference <TextureContent>(diffuse.FilePath, identity)
});
}
// Meshes
var meshes = new Dictionary <Mesh, MeshContent>();
foreach (var sceneMesh in scene.Meshes)
{
if (!sceneMesh.HasVertices)
{
continue;
}
var mesh = new MeshContent
{
Name = sceneMesh.Name
};
// Position vertices are shared at the mesh level
foreach (var vert in sceneMesh.Vertices)
{
mesh.Positions.Add(new Vector3(vert.X, vert.Y, vert.Z));
}
var geom = new GeometryContent
{
Name = string.Empty,
//Material = materials[sceneMesh.MaterialIndex]
};
// Geometry vertices reference 1:1 with the MeshContent parent,
// no indirection is necessary.
geom.Vertices.Positions.AddRange(mesh.Positions);
geom.Vertices.AddRange(Enumerable.Range(0, sceneMesh.VertexCount));
geom.Indices.AddRange(sceneMesh.GetIntIndices());
// Individual channels go here
if (sceneMesh.HasNormals)
{
geom.Vertices.Channels.Add(VertexChannelNames.Normal(), ToXna(sceneMesh.Normals));
}
for (var i = 0; i < sceneMesh.TextureCoordsChannelCount; i++)
{
geom.Vertices.Channels.Add(VertexChannelNames.TextureCoordinate(i),
ToXnaVector2(sceneMesh.GetTextureCoords(i)));
}
mesh.Geometry.Add(geom);
rootNode.Children.Add(mesh);
meshes.Add(sceneMesh, mesh);
}
// Bones
var bones = new Dictionary <Node, BoneContent>();
var hierarchyNodes = scene.RootNode.Children.SelectDeep(n => n.Children).ToList();
foreach (var node in hierarchyNodes)
{
var bone = new BoneContent
{
Name = node.Name,
Transform = Matrix.Transpose(ToXna(node.Transform))
};
if (node.Parent == scene.RootNode)
{
rootNode.Children.Add(bone);
}
else
{
var parent = bones[node.Parent];
parent.Children.Add(bone);
}
// Copy the bone's name to the MeshContent - this appears to be
// the way it comes out of XNA's FBXImporter.
foreach (var meshIndex in node.MeshIndices)
{
meshes[scene.Meshes[meshIndex]].Name = node.Name;
}
bones.Add(node, bone);
}
return(rootNode);
}
/// <summary>
/// Breaks the input mesh into separate un-indexed triangles.
/// </summary>
/// <param name="input">Input MeshContent node.</param>
/// <returns>Broken MeshContent</returns>
private MeshContent ProcessMesh(NodeContent input)
{
MeshBuilder builder = MeshBuilder.StartMesh("model");
MeshContent mesh = input as MeshContent;
List <Vector3> normalList = new List <Vector3>();
List <Vector2> texCoordList = new List <Vector2>();
if (mesh != null)
{
int normalChannel = builder.CreateVertexChannel <Vector3>(
VertexChannelNames.Normal());
int texChannel = builder.CreateVertexChannel <Vector2>(
VertexChannelNames.TextureCoordinate(0));
foreach (GeometryContent geometry in mesh.Geometry)
{
IndirectPositionCollection positions = geometry.Vertices.Positions;
VertexChannel <Vector3> normals =
geometry.Vertices.Channels.Get <Vector3>(
VertexChannelNames.Normal());
VertexChannel <Vector2> texCoords =
geometry.Vertices.Channels.Get <Vector2>(
VertexChannelNames.TextureCoordinate(0));
// Copy the positions over
// To do that, we traverse the indices and grab the indexed
// position and add it to the new mesh. This in effect will
// duplicate positions in the mesh reversing the compacting
// effect of using index buffers.
foreach (int i in geometry.Indices)
{
builder.CreatePosition(positions[i]);
// Save the normals and the texture coordinates for additon to
// the mesh later.
normalList.Add(normals[i]);
texCoordList.Add(texCoords[i]);
}
}
int index = 0;
foreach (GeometryContent geometry in mesh.Geometry)
{
// Save the material to the new mesh.
builder.SetMaterial(geometry.Material);
// Now we create the Triangles.
// To do that, we simply generate an index list that is sequential
// from 0 to geometry.Indices.Count
// This will create an index buffer that looks like: 0,1,2,3,4,5,...
for (int i = 0; i < geometry.Indices.Count; i++)
{
// Set the normal for the current vertex
builder.SetVertexChannelData(normalChannel, normalList[index]);
// Set the texture coordinates for the current vertex
builder.SetVertexChannelData(texChannel, texCoordList[index]);
builder.AddTriangleVertex(index);
index++;
}
}
}
MeshContent finalMesh = builder.FinishMesh();
// Copy the transform over from the source mesh to retain parent/child
// relative transforms.
finalMesh.Transform = input.Transform;
// Now we take the new MeshContent and calculate the centers of all the
// triangles. The centers are needed so that we can rotate the triangles
// around them as we shatter the model.
foreach (GeometryContent geometry in finalMesh.Geometry)
{
Vector3[] triangleCenters = new Vector3[geometry.Indices.Count / 3];
Vector3[] trianglePoints = new Vector3[2];
IndirectPositionCollection positions = geometry.Vertices.Positions;
for (int i = 0; i < positions.Count; i++)
{
Vector3 position = positions[i];
if (i % 3 == 2)
{
// Calculate the center of the triangle.
triangleCenters[i / 3] = (trianglePoints[0] + trianglePoints[1]
+ position) / 3;
}
else
{
trianglePoints[i % 3] = position;
}
}
// Add two new channels to the MeshContent:
// triangleCenterChannel: This is the channel that will store the center
// of the triangle that this vertex belongs to.
// rotationalVelocityChannel: This channel has randomly generated values
// for x,y and z rotational angles. This information will be used to
// randomly rotate the triangles as they shatter from the model.
geometry.Vertices.Channels.Add <Vector3>(
triangleCenterChannel,
new ReplicateTriangleDataToEachVertex <Vector3>(triangleCenters));
geometry.Vertices.Channels.Add <Vector3>(
rotationalVelocityChannel,
new ReplicateTriangleDataToEachVertex <Vector3>(
new RandomVectorEnumerable(triangleCenters.Length)));
}
foreach (NodeContent child in input.Children)
{
finalMesh.Children.Add(ProcessMesh(child));
}
return(finalMesh);
}
