private aiMatrix4x4 InterpolateRotation(double time, NodeAnimationChannel channel)
{
aiQuaternion rotation;
if (channel.RotationKeyCount == 1)
{
rotation = channel.RotationKeys[0].Value;
}
else
{
uint frameIndex = 0;
for (uint i = 0; i < channel.RotationKeyCount - 1; i++)
{
if (time < (float)channel.RotationKeys[(int)(i + 1)].Time)
{
frameIndex = i;
break;
}
}
QuaternionKey currentFrame = channel.RotationKeys[(int)frameIndex];
QuaternionKey nextFrame = channel.RotationKeys[(int)((frameIndex + 1) % channel.RotationKeyCount)];
double delta = (time - (float)currentFrame.Time) / (float)(nextFrame.Time - currentFrame.Time);
aiQuaternion start = currentFrame.Value;
aiQuaternion end = nextFrame.Value;
rotation = aiQuaternion.Slerp(start, end, (float)delta);
rotation.Normalize();
}
return(rotation.GetMatrix());
}
Matrix4x4 FindRotation(NodeAnimationChannel n)
{
Matrix4x4 result = Matrix4x4.Identity;
for (int c = 0; c < n.RotationKeyCount; c++)
{
QuaternionKey q = n.RotationKeys[c];
q.Value = new Assimp.Quaternion(q.Value.W, q.Value.X, q.Value.Y, q.Value.Z);
VectorKey pk = n.PositionKeys[c];
VectorKey ps = n.ScalingKeys[c];
if (_animationController.FrameCounter <= q.Time)
{
result =
(Matrix4x4)q.Value.GetMatrix()
* (Matrix4x4.FromTranslation(pk.Value))
* (Matrix4x4.FromScaling(ps.Value))
;
break;
}
}
return(result);
}
static NumMatrix4x4 GetTransformForFrame(NodeAnimationChannel Ch, int Frame)
{
VectorKey PosKey = Ch.PositionKeys[Ch.PositionKeys.Count - 1];
if (Frame < Ch.PositionKeys.Count)
{
PosKey = Ch.PositionKeys[Frame];
}
QuaternionKey RotKey = Ch.RotationKeys[Ch.RotationKeys.Count - 1];
if (Frame < Ch.RotationKeys.Count)
{
RotKey = Ch.RotationKeys[Frame];
}
VectorKey SclKey = Ch.ScalingKeys[Ch.ScalingKeys.Count - 1];
if (Frame < Ch.ScalingKeys.Count)
{
SclKey = Ch.ScalingKeys[Frame];
}
NumMatrix4x4 Rot = NumMatrix4x4.CreateFromQuaternion(ConvertQuat(RotKey.Value));
NumMatrix4x4 Pos = NumMatrix4x4.CreateTranslation(ConvertVec(PosKey.Value));
NumMatrix4x4 Scl = NumMatrix4x4.CreateScale(ConvertVec(SclKey.Value));
//return Pos * Rot * Scl;
return(Scl * Rot * Pos);
}
/// <summary>
/// Converts a <see cref="QuaternionKey"/> to a <see cref="DomainQuaternionKeyFrame"/>.
/// </summary>
/// <param name="assimpQuaternionKey">The source <see cref="QuaternionKey"/>.</param>
/// <param name="ticksPerSecond">The number of ticks per second for the animation.</param>
/// <returns>The resulting <see cref="DomainQuaternionKeyFrame"/>.</returns>
private static DomainQuaternionKeyFrame GetDomainQuaternionKeyFrame(QuaternionKey assimpQuaternionKey, double ticksPerSecond)
{
var assimpQuaternion = assimpQuaternionKey.Value;
assimpQuaternion.Normalize();
var quaternion = new NumericsQuaternion(assimpQuaternion.X, assimpQuaternion.Y, assimpQuaternion.Z, assimpQuaternion.W);
return(new DomainQuaternionKeyFrame(assimpQuaternionKey.Time / ticksPerSecond, quaternion));
}
static void Main(string[] args)
{
string[] strs = Directory.GetFiles(Environment.CurrentDirectory, "*.dae", SearchOption.TopDirectoryOnly);
foreach (string path in strs)
{
try
{
using (AssimpContext ACont = new AssimpContext())
{
ACont.SetConfig(new NormalSmoothingAngleConfig(66f));
Scene scene = ACont.ImportFile(path, PostProcessSteps.Triangulate);
if (!scene.HasAnimations)
{
Console.WriteLine("Skipping " + path);
continue;
}
Animation anim = scene.Animations[0];
if (!anim.HasNodeAnimations)
{
Console.WriteLine("Invalid animation in " + path);
continue;
}
StringBuilder sb = new StringBuilder();
sb.Append("// mcmonkey's animation details file format v0.2\n");
sb.Append("general\n");
sb.Append("{\n");
sb.Append("\tlength: ").Append((anim.DurationInTicks / anim.TicksPerSecond).ToString()).Append(";\n");
sb.Append("}\n");
for (int i = 0; i < anim.NodeAnimationChannelCount; i++)
{
NodeAnimationChannel node = anim.NodeAnimationChannels[i];
sb.Append(node.NodeName).Append('\n');
sb.Append("{\n");
Node found = LookForMatch(scene.RootNode, node.NodeName);
string pNode = "<none>";
if (found != null)
{
pNode = found.Parent.Name;
}
sb.Append("\tparent: " + pNode + ";\n");
/*Bone bfound = LookForBone(scene, node.NodeName);
* Matrix4x4 mat = Matrix4x4.Identity;
* if (bfound != null)
* {
* mat = bfound.OffsetMatrix;
* //bpos = bfound.OffsetMatrix.C1 + "=" + bfound.OffsetMatrix.C2 + "=" + bfound.OffsetMatrix.C3;
* //bpos = bfound.OffsetMatrix.A4 + "=" + bfound.OffsetMatrix.B4 + "=" + bfound.OffsetMatrix.C4;
* }*/
/*sb.Append("\toffset: " + mat.A1 + "=" + mat.A2 + "=" + mat.A3 + "=" + mat.A4 + "=" +
* mat.B1 + "=" + mat.B2 + "=" + mat.B3 + "=" + mat.B4 + "=" +
* mat.C1 + "=" + mat.C2 + "=" + mat.C3 + "=" + mat.C4 + "=" +
* mat.D1 + "=" + mat.D2 + "=" + mat.D3 + "=" + mat.D4 +";\n");*/
if (node.HasPositionKeys)
{
sb.Append("\tpositions: ");
for (int x = 0; x < node.PositionKeyCount; x++)
{
VectorKey key = node.PositionKeys[x];
sb.Append(key.Time.ToString() + "=" + key.Value.X.ToString() + "=" + key.Value.Y.ToString() + "=" + key.Value.Z.ToString() + " ");
}
sb.Append(";\n");
}
if (node.HasRotationKeys)
{
sb.Append("\trotations: ");
for (int x = 0; x < node.RotationKeyCount; x++)
{
QuaternionKey key = node.RotationKeys[x];
sb.Append(key.Time.ToString() + "=" + key.Value.X.ToString() + "=" + key.Value.Y.ToString() + "=" + key.Value.Z.ToString() + "=" + key.Value.W + " ");
}
sb.Append(";\n");
}
// TODO: Should scaling matter? Probably not.
sb.Append("}\n");
}
File.WriteAllText(path + ".anim", sb.ToString());
}
}
catch (Exception ex)
{
Console.WriteLine("Processing " + path + ": " + ex.ToString());
}
}
}
bool ListQuaternionKey(ref List <QuaternionKey> list, int totalFrames)
{
bool hasChanges = false;
for (int i = 0; i < list.Count; i++)
{
if (list[i] != list[GetNextIndex(list, i)])
{
hasChanges = true;
break;
}
}
if (!hasChanges)
{
return(false);
}
List <QuaternionKey> interpolated = new List <QuaternionKey>(totalFrames);
for (int i = 0; i < totalFrames; i++)
{
interpolated.Add(new QuaternionKey());
}
QuaternionKey first = list[0];
QuaternionKey from;
QuaternionKey to;
for (int i = 0; i < list.Count; i++)
{
from = list[i];
to = list[GetNextIndex(list, i)];
if (Mathf.Abs(((int)to.Time - (int)from.Time)) == 1)
{
continue;
}
bool aNan = (float.IsNaN(from.Value.X) || float.IsNaN(from.Value.Y) || float.IsNaN(from.Value.Z) || float.IsNaN(from.Value.W));
bool bNan = (float.IsNaN(to.Value.X) || float.IsNaN(to.Value.Y) || float.IsNaN(to.Value.Z) || float.IsNaN(to.Value.W));
UnityEngine.Quaternion a = aNan ? UnityEngine.Quaternion.identity : new UnityEngine.Quaternion(from.Value.X, from.Value.Y, from.Value.Z, from.Value.W);
UnityEngine.Quaternion b = bNan ? UnityEngine.Quaternion.identity : new UnityEngine.Quaternion(to.Value.X, to.Value.Y, to.Value.Z, to.Value.W);
int stepCount = Mathf.Abs((int)to.Time - (int)from.Time);
float step = 1f / stepCount;
if (to.Time < from.Time)
{
step = 1f / (float)(totalFrames - (int)from.Time + (int)to.Time);
}
float t = 0f;
for (int j = (int)from.Time; j != (int)to.Time; j = GetNextIndex(interpolated, j))
{
QuaternionKey ik = interpolated[j];
ik.Time = j;
UnityEngine.Quaternion ab = UnityEngine.Quaternion.Lerp(a, b, t);
ik.Value = new Assimp.Quaternion(ab.w, ab.x, ab.y, ab.z);
//print(ik.Value);
interpolated[j] = ik;
t += step;
if (stepCount-- < 0)
{
break;
}
}
if (to == first)
{
break;
}
}
list = interpolated;
return(true);
}
/**
* Kinect Joint Conversion to NodeAnim
*/
private void KinectJointToNode(Scene mainScene, Joint joint, NodeAnimationChannel matchedNode, double time)
{
VectorKey keyframePos = new VectorKey();
keyframePos.Value.X = joint.Position.X;
keyframePos.Value.Y = joint.Position.Y;
keyframePos.Value.Z = joint.Position.Z;
keyframePos.Time = time;
QuaternionKey keyframeRot = new QuaternionKey();
if (joint.JointType == JointType.HipCenter)
{
keyframeRot.Value = new Quaternion(0, (float)3, (float)1.3);
}
else
{
keyframeRot.Value.X = 0;
keyframeRot.Value.Y = 0;
keyframeRot.Value.Z = 0;
}
keyframeRot.Time = time;
//We set last_assimp_joint node that we will reuse for calculate localPosition/Rotation the next step
string prevNodeName = mainScene.RootNode.FindNode(matchedNode.NodeName).Parent.Name;
VectorKey prevKeyframePos = new VectorKey();
bool find = false;
/*
* TODO: We could refactor that code to avoid to go through all joint each time
* we need to look for a specific joint
*/
foreach (Joint j in currentJoinCol)
{
if (prevNodeName == "")
find = true;
if (j.JointType.ToString() == prevNodeName)
{
prevKeyframePos.Value.X = j.Position.X;
prevKeyframePos.Value.Y = j.Position.Y;
prevKeyframePos.Value.Z = j.Position.Z;
find = true;
break;
}
}
if (find == false)
throw new Exception();
if (prevNodeName != "")
keyframePos.Value -= prevKeyframePos.Value;
keyframePos.Value.X *= 17;
keyframePos.Value.Y *= 17;
keyframePos.Value.Z *= 17;
matchedNode.PositionKeys.Add(keyframePos);
matchedNode.RotationKeys.Add(keyframeRot);
}
private Tuple<VectorKey, QuaternionKey> VectorToNode(Vector posVect, double time)
{
VectorKey keyframePos = new VectorKey();
keyframePos.Value.X = posVect.x / HAND_SCALE_RATIO;
keyframePos.Value.Y = posVect.y / HAND_SCALE_RATIO;
keyframePos.Value.Z = posVect.z / HAND_SCALE_RATIO;
keyframePos.Time = time;
QuaternionKey keyframeRot = new QuaternionKey();
keyframeRot.Value.X = 0;
keyframeRot.Value.Y = 0;
keyframeRot.Value.Z = 0;
keyframeRot.Time = time;
return new Tuple<VectorKey, QuaternionKey>(keyframePos, keyframeRot);
}
public static SkeletalAnimation[] LoadAnimations(string fileName, Vector3 multiplier)
{
AssimpContext importer = new AssimpContext();
Scene scene = importer.ImportFile(fileName);
List <SkeletalAnimation> skeletalAnimations = new List <SkeletalAnimation>();
if (scene.HasAnimations)
{
foreach (Animation animation in scene.Animations)
{
if (animation.HasNodeAnimations)
{
SkeletalAnimation skeletalAnimation = new SkeletalAnimation(animation.Name, (float)animation.TicksPerSecond);
foreach (NodeAnimationChannel channel in animation.NodeAnimationChannels)
{
Vector3 lastPosition = Vector3.Zero;
OpenTK.Quaternion lastRotation = OpenTK.Quaternion.Identity;
Vector3 lastScale = Vector3.One;
string nodeName = SanitizeBoneName(channel.NodeName);
if (channel.NodeName.Contains("_$AssimpFbx$_Translation"))
{
foreach (VectorKey key in channel.PositionKeys)
{
lastPosition = new Vector3(key.Value.X, key.Value.Y, key.Value.Z) * multiplier;
skeletalAnimation.AddKeyFrame(nodeName, (float)key.Time, lastPosition, lastRotation, lastScale);
}
}
else if (channel.NodeName.Contains("_$AssimpFbx$_Rotation"))
{
foreach (QuaternionKey key in channel.RotationKeys)
{
lastRotation = new OpenTK.Quaternion(key.Value.X, key.Value.Y, key.Value.Z, key.Value.W);
skeletalAnimation.AddKeyFrame(nodeName, (float)key.Time, lastPosition, lastRotation, lastScale);
}
}
else if (channel.NodeName.Contains("_$AssimpFbx$_Scaling"))
{
foreach (VectorKey key in channel.ScalingKeys)
{
lastScale = new Vector3(key.Value.X, key.Value.Y, key.Value.Z);
skeletalAnimation.AddKeyFrame(nodeName, (float)key.Time, lastPosition, lastRotation, lastScale);
}
}
else
{
for (int i = 0; i < channel.PositionKeyCount; i++)
{
VectorKey keyT = channel.PositionKeys[i];
QuaternionKey keyR = channel.RotationKeys[i];
VectorKey keyS = channel.ScalingKeys[i];
lastPosition = new Vector3(keyT.Value.X, keyT.Value.Y, keyT.Value.Z) * multiplier;
lastRotation = new OpenTK.Quaternion(keyR.Value.X, keyR.Value.Y, keyR.Value.Z, keyR.Value.W);
lastScale = new Vector3(keyS.Value.X, keyS.Value.Y, keyS.Value.Z);
skeletalAnimation.AddKeyFrame(nodeName, (float)keyT.Time, lastPosition, lastRotation, lastScale);
}
}
}
skeletalAnimations.Add(skeletalAnimation);
}
}
}
return(skeletalAnimations.ToArray());
}
private Tuple<VectorKey, QuaternionKey> BoneToNode(Bone bone)
{
VectorKey keyframePos = new VectorKey();
keyframePos.Value.X = joint.Position.X;
keyframePos.Value.Y = joint.Position.Y;
keyframePos.Value.Z = joint.Position.Z;
keyframePos.Time = this.current_frametime;
QuaternionKey keyframeRot = new QuaternionKey();
keyframeRot.Value.X = 0;
keyframeRot.Value.Y = 0;
keyframeRot.Value.Z = 0;
keyframeRot.Time = this.current_frametime;
return new Tuple<VectorKey, QuaternionKey>(keyframePos, keyframeRot);
}
public bool Load(String fileName)
{
// @TODO - change the file path for asset folder in the future currently, set as executable path
String path = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Assets\\");
m_FileName = path + fileName;
// setting assimp context
AssimpContext importer = new AssimpContext();
importer.SetConfig(new NormalSmoothingAngleConfig(66.0f));
// loading scene
Scene scene = null;
try
{
scene = importer.ImportFile(m_FileName, PostProcessPreset.TargetRealTimeMaximumQuality | PostProcessSteps.Triangulate | PostProcessSteps.FlipUVs | PostProcessSteps.FlipWindingOrder);
}
catch (Exception e) // handling assimp exception
{
if (e.Source != null)
{
Console.WriteLine("Error: {0}", e.Message);
}
}
asset = new H1AssetContext();
H1ModelContext convertedModel = asset.AddModel();
// extract the meshes
if (scene.HasMeshes)
{
Int32 meshCount = scene.Meshes.Count;
List <H1MeshContext> meshContexts = new List <H1MeshContext>();
ExtractMeshData(scene, ref meshContexts);
foreach (H1MeshContext meshContext in meshContexts)
{
convertedModel.Meshes.Add(meshContext);
}
}
// extract skeletal data
// what I learned from this failed algorithm
// 1. root bone nodes can be multiple
// 2. for example, blabla_Hub(containing null meshes, only space infos) have null information for weighted vertices, but it should not be considered as leaf node!
#region Disabled Extracting skeletal mesh data methods
/*if (scene.HasMeshes)
* {
* // collect all bones from meshes
* List<Bone> bones = new List<Bone>();
* foreach (Mesh mesh in scene.Meshes)
* {
* if (mesh.HasBones)
* {
* bones.AddRange(mesh.Bones);
* }
* }
*
* // find root node for all meshes
* Node boneRootNode = FindRootBone(bones, scene.RootNode);
*
* H1SkeletalContext skeletalContext = null;
* skeletalContext = new H1SkeletalContext();
* //@TODO - need to optimize for deep copies
* ExtractSkeletalMeshData(boneRootNode, bones, ref skeletalContext);
*
* convertedModel.SkeletalContexts.Add(skeletalContext);
* }*/
#endregion
// what I learned from this failed algorithm
// 1. the counts of bones and bone nodes (joint nodes) can be different
// 2. bone node can be used for just transforming spaces
// 3. bone node could have empty meshes (just includes space information)
// 4. bones are subsidiary for bone nodes
// 5. don't consider aiBone as bone node in hierarchy rather regards node(aiNode) as bone node in hierarchy
// 6. consider aiBone as node bone data containing all necessary data
#region Failed Algorithm
// new algorithms to handle multiple root node (like pelvis and head) more efficient way
/*if (scene.HasMeshes)
* {
* // 1. extracted all bones for all meshes in the scene
* // NOTICE - multiple meshes in file are considered in same body but chunked several parts
* Dictionary<String, Bone> extractedBones = new Dictionary<String, Bone>();
* Dictionary<String, H1SkeletalContext.JointNode> jointNodes = new Dictionary<string, H1SkeletalContext.JointNode>();
* foreach (Mesh mesh in scene.Meshes)
* {
* if (mesh.HasBones)
* {
* foreach (Bone bone in mesh.Bones)
* {
* String boneName = bone.Name;
* if (!extractedBones.ContainsKey(boneName))
* {
* extractedBones.Add(boneName, bone);
*
* H1SkeletalContext.JointNode newJointNode = new H1SkeletalContext.JointNode();
* newJointNode.JointData.JointName = boneName;
* jointNodes.Add(boneName, newJointNode);
* }
* }
* }
* }
*
* // 2. process extracted bones
* // @TODO - naive algorithm need to optimize by searching tree and set the bones parent
* foreach (KeyValuePair<String, Bone> extractedBone in extractedBones)
* {
* Node node = scene.RootNode.FindNode(extractedBone.Key);
* H1SkeletalContext.JointNode jointNode = jointNodes[node.Name];
* H1SkeletalContext.JointNode parentJointNode = jointNodes[node.Parent.Name];
*
* // set proper properties
* jointNode.Parent = parentJointNode;
* foreach (Node child in node.Children)
* {
* H1SkeletalContext.JointNode childJointNode = null;
* if (jointNodes.TryGetValue(child.Name, out childJointNode))
* {
* jointNode.Children.Add(childJointNode);
* }
* }
* ExtractBone(extractedBone.Value, ref jointNode.JointData);
* }
*
* // 3. find root node(s) and set them at the front
* }*/
#endregion
if (scene.HasMeshes)
{
H1SkeletalContext skeletalContext = null;
skeletalContext = new H1SkeletalContext();
// prepare data for BFS search
List <H1SkeletalContext.JointNode> jointNodes = skeletalContext.JointNodes;
Dictionary <String, Int32> jointNameToJointNodeIndex = new Dictionary <String, Int32>();
// extractedBones could have same bone name and multiple bone data
Dictionary <String, List <Bone> > extractedBones = new Dictionary <String, List <Bone> >();
// boneToMeshContexIndex should be mirrored same as extractedBones (index of list should be same)
Dictionary <String, List <Int32> > boneToMeshContextIndex = new Dictionary <String, List <Int32> >();
#region Debug Validation Weight Vertex Counts
#if DEBUG
List <Boolean> taggedVertexIndex = new List <Boolean>(); // verification to tag all needed vertices
List <float> taggedVertexWeights = new List <float>(); // verification to tag all vertex weight for sum of each vertex
List <Int32> taggedVertexIndexOffset = new List <Int32>();
// pre-test for validation
foreach (Mesh mesh in scene.Meshes)
{
if (mesh.HasVertices)
{
foreach (Vector3D vertex in mesh.Vertices)
{
taggedVertexIndex.Add(false);
}
}
if (mesh.HasBones)
{
foreach (Bone bone in mesh.Bones)
{
if (bone.HasVertexWeights)
{
foreach (VertexWeight vertexWeight in bone.VertexWeights)
{
taggedVertexIndex[vertexWeight.VertexID] = true;
}
}
}
}
List <Int32> notTaggedVertexIndex0 = new List <Int32>();
Int32 currVertexIndex0 = 0;
foreach (Boolean isTagged in taggedVertexIndex)
{
if (isTagged == false)
{
notTaggedVertexIndex0.Add(currVertexIndex0);
}
currVertexIndex0++;
}
if (notTaggedVertexIndex0.Count > 0)
{
return(false);
}
taggedVertexIndex.Clear();
}
#endif
#endregion
Int32 validMeshContextIndex = 0;
foreach (Mesh mesh in scene.Meshes)
{
if (mesh.HasVertices &&
mesh.HasNormals &&
mesh.HasTangentBasis &&
mesh.TextureCoordinateChannels[0].Count > 0 &&
mesh.HasFaces) // process vertices in the mesh
{
if (mesh.HasBones)
{
foreach (Bone bone in mesh.Bones)
{
String boneName = bone.Name;
if (!extractedBones.ContainsKey(boneName))
{
// add new list of bone list
extractedBones.Add(boneName, new List <Bone>());
extractedBones[boneName].Add(bone);
// add new list of mesh context index
boneToMeshContextIndex.Add(boneName, new List <Int32>());
boneToMeshContextIndex[boneName].Add(validMeshContextIndex);
}
else // same bone name, but different bone data exists
{
// no need to create list of data, just add new item
// bone data could have different set of weighted vertices, but with same bone name
extractedBones[boneName].Add(bone);
boneToMeshContextIndex[boneName].Add(validMeshContextIndex);
}
}
validMeshContextIndex++;
#region Debug Validation Weight Vertex Count
#if DEBUG
taggedVertexIndexOffset.Add(taggedVertexIndex.Count);
for (Int32 i = 0; i < mesh.VertexCount; ++i)
{
taggedVertexIndex.Add(false);
taggedVertexWeights.Add(0.0f);
}
#endif
#endregion
}
}
}
// BFS search to construct bone data
Stack <Node> nodes = new Stack <Node>();
nodes.Push(scene.RootNode);
while (nodes.Count != 0)
{
Node currNode = nodes.Pop();
H1SkeletalContext.JointNode jointNode = new H1SkeletalContext.JointNode();
H1SkeletalContext.JointNode parentJointNode = jointNodes.Find(x => (x.JointName == currNode.Parent.Name));
jointNode.Parent = parentJointNode;
ExtractNodeSpace(currNode, ref jointNode);
List <Bone> boneDataList = null;
List <Int32> meshContextIndexList = null;
if (extractedBones.TryGetValue(jointNode.JointName, out boneDataList))
{
meshContextIndexList = boneToMeshContextIndex[jointNode.JointName];
// looping bone data list, extract bone data
Int32 currBoneIndex = 0;
foreach (Bone bone in boneDataList)
{
H1SkeletalContext.Joint newJointData = new H1SkeletalContext.Joint();
ExtractBone(bone, ref newJointData);
newJointData.MeshContextIndex = meshContextIndexList[currBoneIndex];
currBoneIndex++;
// store mesh context local-to-global H1Transform for later transformation of offsetMatrix for animation
newJointData.MeshContextLocalToGlobal = convertedModel.Meshes[newJointData.MeshContextIndex].LocalToGlobalTransform;
// add new joint data
jointNode.JointDataList.Add(newJointData);
}
// mark this node is bone-space
jointNode.MarkedAsBoneSpace = true;
// tag its parent until it reaches the state that 'MarkedAsBoneSpace' is true
H1SkeletalContext.JointNode markNode = jointNode.Parent;
while (markNode != null && markNode.MarkedAsBoneSpace != true)
{
markNode.MarkedAsBoneSpace = true;
markNode = markNode.Parent;
}
}
else
{
// for debugging
}
foreach (Node child in currNode.Children)
{
nodes.Push(child);
// tag child names to process child nodes after BFS search
jointNode.ChildNodeNames.Add(child.Name);
}
// add new joint node
Int32 newJointNodeIndex = jointNodes.Count;
jointNodes.Add(jointNode);
jointNameToJointNodeIndex.Add(jointNode.JointName, newJointNodeIndex);
}
// process tagged child nodes
foreach (H1SkeletalContext.JointNode node in jointNodes)
{
foreach (String childName in node.ChildNodeNames)
{
node.Children.Add(jointNodes[jointNameToJointNodeIndex[childName]]);
}
}
#region Debug Validation for total weight value of weighted vertices & vertex counts
#if DEBUG
foreach (H1SkeletalContext.JointNode node in jointNodes)
{
foreach (H1SkeletalContext.Joint jointData in node.JointDataList)
{
foreach (H1SkeletalContext.WeightedVertex weightedVertex in jointData.WeightedVertices)
{
// confirm all vertices in Mesh are tagged by weighted vertices
taggedVertexIndex[taggedVertexIndexOffset[jointData.MeshContextIndex] + weightedVertex.VertexIndex] = true;
// add vertex weight to verify
taggedVertexWeights[taggedVertexIndexOffset[jointData.MeshContextIndex] + weightedVertex.VertexIndex] += weightedVertex.Weight;
}
}
}
// verification code to extract not tagged vertex index
List <Int32> notTaggedVertexIndex = new List <Int32>();
Int32 currVertexIndex = 0;
foreach (Boolean isTagged in taggedVertexIndex)
{
if (isTagged == false)
{
notTaggedVertexIndex.Add(currVertexIndex);
}
currVertexIndex++;
}
if (notTaggedVertexIndex.Count > 0)
{
return(false);
}
// verification code to extract vertex which has invalid vertex weight value
List <Int32> invalidVertexWeightVertexIndex = new List <Int32>();
currVertexIndex = 0;
foreach (float currVertexWeights in taggedVertexWeights)
{
if (currVertexWeights < 0.99f)
{
invalidVertexWeightVertexIndex.Add(currVertexIndex);
}
}
if (invalidVertexWeightVertexIndex.Count > 0)
{
return(false);
}
#endif
#endregion
convertedModel.SkeletalContexts.Add(skeletalContext);
}
// extract the animations
if (scene.HasAnimations)
{
H1AnimationContext newAnimContext = new H1AnimationContext();
for (Int32 animIndex = 0; animIndex < scene.AnimationCount; ++animIndex)
{
Animation currAnimation = scene.Animations[animIndex];
if (currAnimation.HasNodeAnimations) // we only handle node animations (not vertex animation)
{
// create new animation sequence
H1AnimationContext.AnimSequence newAnimSeq = new H1AnimationContext.AnimSequence();
newAnimSeq.AnimSeqName = currAnimation.Name;
newAnimSeq.Duration = currAnimation.DurationInTicks;
newAnimSeq.TicksPerSecond = currAnimation.TicksPerSecond;
foreach (NodeAnimationChannel animChannel in currAnimation.NodeAnimationChannels)
{
H1AnimationContext.JointAnimation newJointAnim = new H1AnimationContext.JointAnimation();
newJointAnim.BoneName = animChannel.NodeName;
// calculate maximum number of keys to fill up the special case (only holding one key)
Int32 maxNumKeys = Math.Max(Math.Max(animChannel.ScalingKeyCount, animChannel.RotationKeyCount), animChannel.PositionKeyCount);
if (animChannel.HasPositionKeys)
{
if (animChannel.PositionKeyCount == 1) // special handling (only holding one key)
{
VectorKey positionKey = animChannel.PositionKeys[0];
for (Int32 numKey = 0; numKey < maxNumKeys; ++numKey)
{
H1AnimationContext.PositionKey newPosKey = new H1AnimationContext.PositionKey();
newPosKey.Time = positionKey.Time;
newPosKey.Value = new Vector3(positionKey.Value.X, positionKey.Value.Y, positionKey.Value.Z);
newJointAnim.PosKeys.Add(newPosKey);
}
}
else
{
foreach (VectorKey positionKey in animChannel.PositionKeys)
{
H1AnimationContext.PositionKey newPosKey = new H1AnimationContext.PositionKey();
newPosKey.Time = positionKey.Time;
newPosKey.Value = new Vector3(positionKey.Value.X, positionKey.Value.Y, positionKey.Value.Z);
newJointAnim.PosKeys.Add(newPosKey);
}
}
}
if (animChannel.HasRotationKeys)
{
if (animChannel.RotationKeyCount == 1) // special handling (only holding one key)
{
QuaternionKey quatKey = animChannel.RotationKeys[0];
for (Int32 numKey = 0; numKey < maxNumKeys; ++numKey)
{
H1AnimationContext.QuaternionKey newQuatKey = new H1AnimationContext.QuaternionKey();
newQuatKey.Time = quatKey.Time;
newQuatKey.Value = new SharpDX.Quaternion(quatKey.Value.X, quatKey.Value.Y, quatKey.Value.Z, quatKey.Value.W);
newJointAnim.RotKeys.Add(newQuatKey);
}
}
else
{
foreach (QuaternionKey quatKey in animChannel.RotationKeys)
{
H1AnimationContext.QuaternionKey newQuatKey = new H1AnimationContext.QuaternionKey();
newQuatKey.Time = quatKey.Time;
newQuatKey.Value = new SharpDX.Quaternion(quatKey.Value.X, quatKey.Value.Y, quatKey.Value.Z, quatKey.Value.W);
newJointAnim.RotKeys.Add(newQuatKey);
}
}
}
if (animChannel.HasScalingKeys)
{
if (animChannel.ScalingKeyCount == 1) // special handling (only holding one key)
{
VectorKey scalingKey = animChannel.ScalingKeys[0];
for (Int32 numKey = 0; numKey < maxNumKeys; ++numKey)
{
H1AnimationContext.ScalingKey newScalingKey = new H1AnimationContext.ScalingKey();
newScalingKey.Time = scalingKey.Time;
newScalingKey.Value = new Vector3(scalingKey.Value.X, scalingKey.Value.Y, scalingKey.Value.Z);
newJointAnim.ScaleKeys.Add(newScalingKey);
}
}
else
{
foreach (VectorKey scalingKey in animChannel.ScalingKeys)
{
H1AnimationContext.ScalingKey newScalingKey = new H1AnimationContext.ScalingKey();
newScalingKey.Time = scalingKey.Time;
newScalingKey.Value = new Vector3(scalingKey.Value.X, scalingKey.Value.Y, scalingKey.Value.Z);
newJointAnim.ScaleKeys.Add(newScalingKey);
}
}
}
newAnimSeq.BoneAnimations.Add(newJointAnim);
}
newAnimContext.AnimSequences.Add(newAnimSeq);
}
}
// set the animation context
convertedModel.AnimationContext = newAnimContext;
}
return(true);
}