public Vitaboy.Bone NodeToBone(Node bone, Matrix4x4 worldMat)
{
AffineTransform worldTransform = AffineTransform.WorldToLocal(Matrix4x4.Identity, worldMat);
var vbone = new Vitaboy.Bone();
vbone.Name = bone.Name;
var isroot = bone.Name == "ROOT";
if (bone.VisualParent == null || isroot)
{
vbone.ParentName = "NULL";
}
else
{
vbone.ParentName = bone.VisualParent.Name;
}
vbone.HasProps = false;
vbone.Properties = new List <Vitaboy.PropertyListItem>();
vbone.CanBlend = 1;
vbone.CanRotate = 1;
vbone.CanTranslate = 1;
var recursiveScale = RecursiveScale(bone.VisualParent);
var transform = bone.LocalTransform;
var baseQuat = transform.Rotation;
if (isroot)
{
baseQuat = RotateQ * worldTransform.Rotation * baseQuat; //worldTransform.Rotation * baseQuat;
}
vbone.Rotation = QuatConvert(baseQuat);
var baseTrans = transform.Translation;
if (isroot)
{
baseTrans = Vector3.Transform(baseTrans, worldMat * RotateM); //worldMat * RotateM);
}
baseTrans *= recursiveScale;
vbone.Translation = Vec3Convert(baseTrans);
return(vbone);
}
public void Process(string filename)
{
var root = ModelRoot.Load(filename);
Animations = new List <Vitaboy.Animation>();
Meshes = new List <ImportMeshGroup>();
int fps = 36;
float invFPS = 1f / fps;
//var rootNode = root.LogicalNodes.FirstOrDefault(node => node.Name == "ROOT");
var skin = root.LogicalSkins.FirstOrDefault();
if (skin != null)
{
Skeleton = new Vitaboy.Skeleton();
Skeleton.Name = "custom";
var invBind = skin.GetInverseBindMatricesAccessor().AsMatrix4x4Array();
var orderedNodes = Enumerable.Range(0, skin.JointsCount).Select(i => {
var node = skin.GetJoint(i).Item1;
Matrix4x4 mat;
if (Matrix4x4.Invert(invBind[i], out mat))
{
node.WorldMatrix = mat;
}
return(node);
}).ToList();
var rootNode = orderedNodes.FirstOrDefault(x => x.Name == "ROOT");
var worldMat = Matrix4x4.Identity;
//find the first node above the root bone
var animNode = rootNode.VisualParent;
if (animNode != null)
{
worldMat = animNode.WorldMatrix;
}
if (rootNode != null)
{
//var orderedNodes = root.LogicalNodes.Where(x => x == rootNode || IsChildOf(x, rootNode));
var bones = new List <Vitaboy.Bone>();
var boneI = 0;
foreach (var node in orderedNodes)
{
var bone = NodeToBone(node, worldMat);
bone.Index = boneI++;
bones.Add(bone);
}
Skeleton.RootBone = bones.FirstOrDefault(x => x.ParentName == "NULL");
foreach (var bone in bones)
{
bone.Children = bones.Where(x => x.ParentName == bone.Name).ToArray();
}
Skeleton.Bones = bones.ToArray();
Skeleton.ComputeBonePositions(Skeleton.RootBone, Microsoft.Xna.Framework.Matrix.Identity);
}
}
var models = root.LogicalMeshes;
foreach (var model in models)
{
foreach (var prim in model.Primitives)
{
var mat = prim.Material;
if (mat == null)
{
continue; // must have a material
}
var mesh = new Vitaboy.Mesh();
mesh.SkinName = mat.Name;
var tris = prim.GetTriangleIndices();
var indices = new List <int>();
foreach (var tri in tris)
{
indices.Add(tri.Item3);
indices.Add(tri.Item2);
indices.Add(tri.Item1);
}
var indBuffer = indices.ToArray();
var positions = prim.VertexAccessors["POSITION"].AsVector3Array();
var uvs = prim.VertexAccessors["TEXCOORD_0"].AsVector2Array();
var normals = prim.VertexAccessors["NORMAL"].AsVector3Array();
var joints = prim.VertexAccessors["JOINTS_0"].AsVector4Array();
var weights = prim.VertexAccessors["WEIGHTS_0"].AsVector4Array();
//we actually need to remap vertices.
var verts = new List <MeshVert>();
for (int i = 0; i < positions.Count; i++)
{
var pos = positions[i];
var uv = uvs[i];
var normal = normals[i];
var joint = joints[i];
var weight = weights[i];
verts.Add(new MeshVert(i, pos, uv, normal, joint, weight));
}
// order by bone bindings, as bones and blend verts are bound using regions
// sorts by blend bone first, then real bone. Result looks like:
// (bone 0, no blend), (bone 1, blend 2), (bone 1, blend 3), (bone 2, no blend), ...
verts = verts.OrderBy(x => x.Joints.X).ToList(); //(x => (x.Weights.Y == 0) ? -1 : x.Joints.Y).ThenBy
// remap indices to point where the vertices are after sorting
for (int i = 0; i < indBuffer.Length; i++)
{
indBuffer[i] = verts.FindIndex(vert => vert.SourceIndex == indBuffer[i]);
}
mesh.IndexBuffer = indBuffer;
mesh.NumPrimitives = indBuffer.Length / 3;
mesh.VertexBuffer = verts.Select(vert => {
var pos = Vec3Convert(vert.Position);
var normal = Vec3Convert(vert.Normal);
// position is already transformed. we need to invert the bind bone transform to get back to origin
// (do not scale)
//find main bone
var mainInd = (int)vert.Joints.X;
var main = (mainInd < 0 || mainInd >= Skeleton.Bones.Length) ? null : Skeleton.Bones[mainInd];
//find blend bone
var blendInd = (int)vert.Joints.Y;
var blend = (vert.Weights.Y == 0 || blendInd < 0 || blendInd >= Skeleton.Bones.Length) ? null : Skeleton.Bones[blendInd];
var bpos = pos;
var bnorm = normal;
if (main != null)
{
var bonemat = RotateMX * Microsoft.Xna.Framework.Matrix.Invert(main.AbsoluteMatrix);
pos = Microsoft.Xna.Framework.Vector3.Transform(pos, bonemat);
normal = Microsoft.Xna.Framework.Vector3.TransformNormal(normal, bonemat);
}
if (blend != null)
{
var bonemat = RotateMX * Microsoft.Xna.Framework.Matrix.Invert(blend.AbsoluteMatrix);
bpos = Microsoft.Xna.Framework.Vector3.Transform(bpos, bonemat);
bnorm = Microsoft.Xna.Framework.Vector3.TransformNormal(bnorm, bonemat);
}
else
{
bpos = pos;
bnorm = normal;
}
// only two weights are supported (one "real" and one "blend", so we will have to remove the smallest
// assume XYZW is sorted highest to lowest weight
var weight = vert.Weights;
var multiplier = (weight.X + weight.Y + weight.Z + weight.W) / (weight.X + weight.Y);
return(new Vitaboy.Model.VitaboyVertex(
pos,
new Microsoft.Xna.Framework.Vector2(vert.UV.X, vert.UV.Y),
bpos,
new Microsoft.Xna.Framework.Vector3(vert.Joints.X, vert.Joints.Y, weight.Y * multiplier), //bone ind, blend ind, intensity
normal,
bnorm
));
}).ToArray();
//create bindings
var bindings = new List <Vitaboy.BoneBinding>();
var blendData = new List <Vitaboy.BlendData>();
var blendVerts = new List <Microsoft.Xna.Framework.Vector3>();
var blendNormals = new List <Microsoft.Xna.Framework.Vector3>();
Vitaboy.BoneBinding current = null;
var vertI = 0;
var vcount = 0;
//real verts first
foreach (var vert in mesh.VertexBuffer)
{
if (current == null || current.BoneIndex != (int)vert.Parameters.X)
{
if (current != null)
{
current.RealVertexCount = vcount;
current.BlendVertexCount = 0;
}
current = new Vitaboy.BoneBinding();
bindings.Add(current);
current.FirstRealVertex = vertI;
current.FirstBlendVertex = -1;
current.BoneIndex = (int)vert.Parameters.X;
current.BoneName = (current.BoneIndex < 0 || current.BoneIndex >= Skeleton.Bones.Length) ? "NULL" : Skeleton.Bones[current.BoneIndex].Name;
vcount = 0;
}
vcount++;
vertI++;
}
if (current != null)
{
current.RealVertexCount = vcount;
current.BlendVertexCount = 0;
}
// blend verts
// for each bone, find the verts blend affects
// then add them to the blend verts list, and update the binding
// O(n*m) but this is an import so whatever!
foreach (var binding in bindings)
{
var id = binding.BoneIndex;
var startBlend = blendVerts.Count;
var blends = mesh.VertexBuffer.Where(x => (int)x.Parameters.Y == id && x.Parameters.Z > 0).ToList();
vertI = 0;
foreach (var vert in mesh.VertexBuffer)
{
if ((int)vert.Parameters.Y == id && vert.Parameters.Z > 0)
{
blendData.Add(new Vitaboy.BlendData()
{
OtherVertex = vertI, Weight = vert.Parameters.Z
});
blendVerts.Add(vert.BvPosition);
blendNormals.Add(vert.BvNormal);
}
vertI++;
}
if (blendVerts.Count != startBlend)
{
binding.FirstBlendVertex = startBlend;
binding.BlendVertexCount = blendVerts.Count - startBlend;
}
}
mesh.BlendData = blendData.ToArray();
mesh.BlendVerts = blendVerts.ToArray();
mesh.BlendNormals = blendNormals.ToArray();
mesh.BoneBindings = bindings.ToArray();
mesh.BlendVertBoneIndices = new int[mesh.BlendData.Length];
var tex = mat.FindChannel("BaseColor");
var texData = tex?.Texture?.PrimaryImage?.GetImageContent();
Meshes.Add(new ImportMeshGroup()
{
Name = mat.Name, Mesh = mesh, TextureData = texData
});
}
}
var nodes = root.LogicalNodes;
var sceneExtras = root.LogicalScenes.FirstOrDefault().TryUseExtrasAsDictionary(false);
foreach (var animation in root.LogicalAnimations)
{
var vitaAnim = new Vitaboy.Animation();
Animations.Add(vitaAnim);
var vitaRot = new List <Microsoft.Xna.Framework.Quaternion>();
var vitaTrans = new List <Microsoft.Xna.Framework.Vector3>();
vitaAnim.Name = SanitizeName(animation.Name);
vitaAnim.Duration = animation.Duration;
vitaAnim.XSkillName = vitaAnim.Name;
uint frameDuration = (uint)Math.Max(1, Math.Ceiling(animation.Duration * fps));
vitaAnim.NumFrames = (int)frameDuration;
vitaAnim.UpdateFPS();
var motions = new List <Vitaboy.AnimationMotion>();
//find the first node above the root bone
var transform = AffineTransform.Identity;
var worldMat = Matrix4x4.Identity;
var animNode = nodes.FirstOrDefault(x => animation.FindRotationSampler(x) != null || animation.FindTranslationSampler(x) != null);
while (animNode != null && animNode.Name != "ROOT")
{
animNode = animNode.VisualParent;
}
if (animNode != null)
{
animNode = animNode.VisualParent;
}
if (animNode != null)
{
worldMat = animNode.WorldMatrix;
transform = AffineTransform.WorldToLocal(Matrix4x4.Identity, worldMat);
}
//check all nodes in the skeleton for matching samplers (rotation, translation).
//if a sampler exists, add it to the animation
foreach (var node in nodes)
{
var recursiveScale = RecursiveScale(node.VisualParent);
var rotS = animation.FindRotationSampler(node);
var transS = animation.FindTranslationSampler(node);
var rotSampler = rotS?.CreateCurveSampler();
var transSampler = transS?.CreateCurveSampler();
var isroot = node.Name == "ROOT";
if (rotSampler != null || transSampler != null)
{
//add this motion to the animation
var motion = new Vitaboy.AnimationMotion();
motions.Add(motion);
motion.BoneName = node.Name;
motion.HasRotation = rotSampler != null;
motion.HasTranslation = transSampler != null;
motion.FrameCount = frameDuration;
motion.Duration = animation.Duration;
motion.Properties = new Vitaboy.PropertyList[0];
if (sceneExtras != null) //node.Extras != null)
{
//timeprops for this node
var timeprops = GetTimeProps(sceneExtras, vitaAnim.Name);
var list = new Vitaboy.TimePropertyList();
var propDict = new Dictionary <int, Vitaboy.TimePropertyListItem>();
foreach (var tp in timeprops)
{
Vitaboy.TimePropertyListItem item;
if (!propDict.TryGetValue(tp.ID, out item))
{
item = new Vitaboy.TimePropertyListItem();
item.ID = tp.ID;
item.Properties = new Vitaboy.PropertyList();
item.Properties.Items = new Vitaboy.PropertyListItem[0];
propDict[tp.ID] = item;
}
Array.Resize(ref item.Properties.Items, item.Properties.Items.Length + 1);
var entry = new Vitaboy.PropertyListItem();
item.Properties.Items[item.Properties.Items.Length - 1] = entry;
entry.KeyPairs.Add(new KeyValuePair <string, string>(tp.Event, tp.Value));
}
list.Items = propDict.Values.ToArray();
motion.TimeProperties = new Vitaboy.TimePropertyList[] { list };
}
else
{
motion.TimeProperties = new Vitaboy.TimePropertyList[0];
}
if (motion.HasRotation)
{
motion.FirstRotationIndex = (uint)vitaRot.Count;
float rotDuration;
if (rotS.InterpolationMode == AnimationInterpolationMode.CUBICSPLINE)
{
rotDuration = rotS.GetCubicKeys().LastOrDefault().Item1;
}
else
{
rotDuration = rotS.GetLinearKeys().LastOrDefault().Item1;
}
for (int i = 0; i < frameDuration; i++)
{
var baseQuat = rotSampler.GetPoint(Math.Min(rotDuration, i * invFPS));
if (isroot)
{
baseQuat = RotateQ * transform.Rotation * baseQuat;
}
vitaRot.Add(QuatConvert(baseQuat));
}
}
else
{
motion.FirstRotationIndex = uint.MaxValue;
}
if (motion.HasTranslation)
{
motion.FirstTranslationIndex = (uint)vitaTrans.Count;
float transDuration;
if (transS.InterpolationMode == AnimationInterpolationMode.CUBICSPLINE)
{
transDuration = transS.GetCubicKeys().LastOrDefault().Item1;
}
else
{
transDuration = transS.GetLinearKeys().LastOrDefault().Item1;
}
for (int i = 0; i < frameDuration; i++)
{
var baseTrans = transSampler.GetPoint(Math.Min(transDuration, i * invFPS));
if (isroot)
{
baseTrans = Vector3.Transform(baseTrans, worldMat * RotateM);
}
baseTrans *= recursiveScale;
vitaTrans.Add(Vec3Convert(baseTrans));
}
}
else
{
motion.FirstTranslationIndex = uint.MaxValue;
}
}
}
vitaAnim.Motions = motions.ToArray();
vitaAnim.Rotations = vitaRot.ToArray();
vitaAnim.Translations = vitaTrans.ToArray();
vitaAnim.RotationCount = (uint)vitaAnim.Rotations.Length;
vitaAnim.TranslationCount = (uint)vitaAnim.Translations.Length;
vitaAnim.IsMoving = (byte)((motions.Count > 0) ? 1 : 0);
}
}
