public static Assimp.Scene ToAssimpScene(RwAnimationNode animation, RwFrameListNode frameList)
{
var aiScene = new Assimp.Scene();
// RootNode
var rootFrame = frameList[0];
var aiRootNode = new Assimp.Node("RootNode", null);
aiRootNode.Transform = new Assimp.Matrix4x4(rootFrame.Transform.M11, rootFrame.Transform.M21, rootFrame.Transform.M31, rootFrame.Transform.M41,
rootFrame.Transform.M12, rootFrame.Transform.M22, rootFrame.Transform.M32, rootFrame.Transform.M42,
rootFrame.Transform.M13, rootFrame.Transform.M23, rootFrame.Transform.M33, rootFrame.Transform.M43,
rootFrame.Transform.M14, rootFrame.Transform.M24, rootFrame.Transform.M34, rootFrame.Transform.M44);
aiScene.RootNode = aiRootNode;
for (int i = 1; i < frameList.Count; i++)
{
var frame = frameList[i];
var frameName = "_" + frame.HAnimFrameExtensionNode.NameId;
Assimp.Node aiParentNode = null;
if (frame.Parent != null)
{
string parentName = "RootNode";
if (frame.Parent.HasHAnimExtension)
{
parentName = "_" + frame.Parent.HAnimFrameExtensionNode.NameId;
}
aiParentNode = aiRootNode.FindNode(parentName);
}
var aiNode = new Assimp.Node(frameName, aiParentNode);
aiNode.Transform = new Assimp.Matrix4x4(frame.Transform.M11, frame.Transform.M21, frame.Transform.M31, frame.Transform.M41,
frame.Transform.M12, frame.Transform.M22, frame.Transform.M32, frame.Transform.M42,
frame.Transform.M13, frame.Transform.M23, frame.Transform.M33, frame.Transform.M43,
frame.Transform.M14, frame.Transform.M24, frame.Transform.M34, frame.Transform.M44);
aiParentNode.Children.Add(aiNode);
}
var aiAnimation = new Assimp.Animation();
aiAnimation.TicksPerSecond = FPS;
aiAnimation.DurationInTicks = animation.Duration * FPS;
aiAnimation.Name = "Take 01";
aiScene.Animations.Add(aiAnimation);
var keyFrameToNodeAnimationChannel = new Dictionary <RwKeyFrame, Assimp.NodeAnimationChannel>();
for (var i = 0; i < frameList.AnimationRootNode.HAnimFrameExtensionNode.Hierarchy.Nodes.Count; i++)
{
var hierarchyNode = frameList.AnimationRootNode.HAnimFrameExtensionNode.Hierarchy.Nodes[i];
var keyFrame = animation.KeyFrames[i];
// Create channel
var aiNodeAnimationChannel = new Assimp.NodeAnimationChannel();
aiNodeAnimationChannel.NodeName = "_" + hierarchyNode.NodeId;
aiNodeAnimationChannel.PostState = Assimp.AnimationBehaviour.Default;
aiNodeAnimationChannel.PreState = Assimp.AnimationBehaviour.Default;
aiNodeAnimationChannel.PositionKeys.Add(new Assimp.VectorKey(0, new Assimp.Vector3D(keyFrame.Translation.X, keyFrame.Translation.Y, keyFrame.Translation.Z)));
aiNodeAnimationChannel.RotationKeys.Add(new Assimp.QuaternionKey(0, new Assimp.Quaternion(keyFrame.Rotation.X, keyFrame.Rotation.Y, keyFrame.Rotation.Z, keyFrame.Rotation.W)));
aiNodeAnimationChannel.ScalingKeys.Add(new Assimp.VectorKey(0, new Assimp.Vector3D(1, 1, 1)));
aiNodeAnimationChannel.ScalingKeys.Add(new Assimp.VectorKey(Math.Round(animation.Duration * FPS), new Assimp.Vector3D(1, 1, 1)));
keyFrameToNodeAnimationChannel[keyFrame] = aiNodeAnimationChannel;
aiAnimation.NodeAnimationChannels.Add(aiNodeAnimationChannel);
}
for (int i = frameList.AnimationRootNode.HAnimFrameExtensionNode.Hierarchy.Nodes.Count; i < animation.KeyFrames.Count; i++)
{
var keyFrame = animation.KeyFrames[i];
// Add keys
var aiNodeAnimationChannel = keyFrameToNodeAnimationChannel[keyFrame.Previous];
aiNodeAnimationChannel.PositionKeys.Add(new Assimp.VectorKey(keyFrame.Time * FPS, new Assimp.Vector3D(keyFrame.Translation.X, keyFrame.Translation.Y, keyFrame.Translation.Z)));
aiNodeAnimationChannel.RotationKeys.Add(new Assimp.QuaternionKey(keyFrame.Time * FPS, new Assimp.Quaternion(keyFrame.Rotation.X, keyFrame.Rotation.Y, keyFrame.Rotation.Z, keyFrame.Rotation.W)));
keyFrameToNodeAnimationChannel[keyFrame] = aiNodeAnimationChannel;
}
return(aiScene);
}
public static Assimp.Scene ToAssimpScene(RwClumpNode clumpNode)
{
// Scene
var aiScene = new Assimp.Scene();
// RootNode
var rootFrame = clumpNode.FrameList[0];
var aiRootNode = new Assimp.Node("RootNode", null);
aiRootNode.Transform = new Assimp.Matrix4x4(rootFrame.Transform.M11, rootFrame.Transform.M21, rootFrame.Transform.M31, rootFrame.Transform.M41,
rootFrame.Transform.M12, rootFrame.Transform.M22, rootFrame.Transform.M32, rootFrame.Transform.M42,
rootFrame.Transform.M13, rootFrame.Transform.M23, rootFrame.Transform.M33, rootFrame.Transform.M43,
rootFrame.Transform.M14, rootFrame.Transform.M24, rootFrame.Transform.M34, rootFrame.Transform.M44);
aiScene.RootNode = aiRootNode;
for (int i = 1; i < clumpNode.FrameList.Count; i++)
{
var frame = clumpNode.FrameList[i];
var frameName = "_" + frame.HAnimFrameExtensionNode.NameId;
Assimp.Node aiParentNode = null;
if (frame.Parent != null)
{
string parentName = "RootNode";
if (frame.Parent.HasHAnimExtension)
{
parentName = "_" + frame.Parent.HAnimFrameExtensionNode.NameId;
}
aiParentNode = aiRootNode.FindNode(parentName);
}
var aiNode = new Assimp.Node(frameName, aiParentNode);
aiNode.Transform = new Assimp.Matrix4x4(frame.Transform.M11, frame.Transform.M21, frame.Transform.M31, frame.Transform.M41,
frame.Transform.M12, frame.Transform.M22, frame.Transform.M32, frame.Transform.M42,
frame.Transform.M13, frame.Transform.M23, frame.Transform.M33, frame.Transform.M43,
frame.Transform.M14, frame.Transform.M24, frame.Transform.M34, frame.Transform.M44);
aiParentNode.Children.Add(aiNode);
}
// Meshes, Materials
for (int atomicIndex = 0; atomicIndex < clumpNode.Atomics.Count; atomicIndex++)
{
var atomic = clumpNode.Atomics[atomicIndex];
var geometry = clumpNode.GeometryList[atomic.GeometryIndex];
var frame = clumpNode.FrameList[atomic.FrameIndex];
var aiNodeName = $"Atomic{atomicIndex}";
var aiNode = new Assimp.Node(aiNodeName, aiScene.RootNode);
var frameWorldTransform = frame.WorldTransform;
aiNode.Transform = new Assimp.Matrix4x4(frameWorldTransform.M11, frameWorldTransform.M21, frameWorldTransform.M31, frameWorldTransform.M41,
frameWorldTransform.M12, frameWorldTransform.M22, frameWorldTransform.M32, frameWorldTransform.M42,
frameWorldTransform.M13, frameWorldTransform.M23, frameWorldTransform.M33, frameWorldTransform.M43,
frameWorldTransform.M14, frameWorldTransform.M24, frameWorldTransform.M34, frameWorldTransform.M44);
aiScene.RootNode.Children.Add(aiNode);
bool hasVertexWeights = geometry.SkinNode != null;
for (int meshIndex = 0; meshIndex < geometry.MeshListNode.MaterialMeshes.Length; meshIndex++)
{
var mesh = geometry.MeshListNode.MaterialMeshes[meshIndex];
var aiMesh = new Assimp.Mesh($"Atomic{atomicIndex}_Geometry{atomic.GeometryIndex}_Mesh{meshIndex}", Assimp.PrimitiveType.Triangle);
// get triangle list indices
int[] indices;
if (geometry.MeshListNode.PrimitiveType == RwPrimitiveType.TriangleList)
{
indices = mesh.Indices;
}
else
{
indices = MeshUtilities.ToTriangleList(mesh.Indices, false);
}
// Faces
for (int i = 0; i < indices.Length; i += 3)
{
var faceIndices = new[] { i, i + 1, i + 2 };
var aiFace = new Assimp.Face(faceIndices);
aiMesh.Faces.Add(aiFace);
}
// TextureCoordinateChannels, VertexColorChannels, Vertices, MaterialIndex, Normals
for (int triIdx = 0; triIdx < indices.Length; triIdx += 3)
{
for (int triVertIdx = 0; triVertIdx < 3; triVertIdx++)
{
int vertexIndex = indices[triIdx + triVertIdx];
// TextureCoordinateChannels
if (geometry.HasTextureCoordinates)
{
for (int channelIdx = 0; channelIdx < geometry.TextureCoordinateChannelCount; channelIdx++)
{
var textureCoordinate = geometry.TextureCoordinateChannels[channelIdx][vertexIndex];
var aiTextureCoordinate = new Assimp.Vector3D(textureCoordinate.X, textureCoordinate.Y, 0f);
aiMesh.TextureCoordinateChannels[channelIdx].Add(aiTextureCoordinate);
}
}
// VertexColorChannels
if (geometry.HasColors)
{
var color = geometry.Colors[vertexIndex];
var aiColor = new Assimp.Color4D(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
aiMesh.VertexColorChannels[0].Add(aiColor);
}
// Vertices
if (geometry.HasVertices)
{
var vertex = geometry.Vertices[vertexIndex];
var aiVertex = new Assimp.Vector3D(vertex.X, vertex.Y, vertex.Z);
aiMesh.Vertices.Add(aiVertex);
}
// Normals
if (geometry.HasNormals)
{
var normal = geometry.Normals[vertexIndex];
var aiNormal = new Assimp.Vector3D(normal.X, normal.Y, normal.Z);
aiMesh.Normals.Add(aiNormal);
}
}
}
// Bones
if (hasVertexWeights)
{
var skinNode = geometry.SkinNode;
var aiBoneMap = new Dictionary <int, Assimp.Bone>();
for (int i = 0; i < indices.Length; i++)
{
var vertexIndex = indices[i];
int realVertexIndex = i;
for (int j = 0; j < 4; j++)
{
var boneIndex = skinNode.VertexBoneIndices[vertexIndex][j];
var boneWeight = skinNode.VertexBoneWeights[vertexIndex][j];
if (boneWeight == 0.0f)
{
continue;
}
if (!aiBoneMap.Keys.Contains(boneIndex))
{
var aiBone = new Assimp.Bone();
var boneFrame = clumpNode.FrameList.GetFrameByHierarchyIndex(boneIndex);
aiBone.Name = boneFrame.HasHAnimExtension ? "_" + boneFrame.HAnimFrameExtensionNode.NameId : "RootNode";
aiBone.VertexWeights.Add(new Assimp.VertexWeight(realVertexIndex, boneWeight));
Matrix4x4.Invert(frame.WorldTransform, out Matrix4x4 invertedFrameWorldTransform);
Matrix4x4.Invert(boneFrame.WorldTransform * invertedFrameWorldTransform, out Matrix4x4 offsetMatrix);
aiBone.OffsetMatrix = new Assimp.Matrix4x4(offsetMatrix.M11, offsetMatrix.M21, offsetMatrix.M31, offsetMatrix.M41,
offsetMatrix.M12, offsetMatrix.M22, offsetMatrix.M32, offsetMatrix.M42,
offsetMatrix.M13, offsetMatrix.M23, offsetMatrix.M33, offsetMatrix.M43,
offsetMatrix.M14, offsetMatrix.M24, offsetMatrix.M34, offsetMatrix.M44);
aiBoneMap[boneIndex] = aiBone;
}
if (!aiBoneMap[boneIndex].VertexWeights.Any(x => x.VertexID == realVertexIndex))
{
aiBoneMap[boneIndex].VertexWeights.Add(new Assimp.VertexWeight(realVertexIndex, boneWeight));
}
}
}
aiMesh.Bones.AddRange(aiBoneMap.Values);
}
else
{
var aiBone = new Assimp.Bone();
// Name
aiBone.Name = frame.HasHAnimExtension ? "_" + frame.HAnimFrameExtensionNode.NameId : "RootNode";
// VertexWeights
for (int i = 0; i < aiMesh.Vertices.Count; i++)
{
var aiVertexWeight = new Assimp.VertexWeight(i, 1f);
aiBone.VertexWeights.Add(aiVertexWeight);
}
// OffsetMatrix
/*
* Matrix4x4.Invert( frame.WorldTransform, out Matrix4x4 offsetMatrix );
* aiBone.OffsetMatrix = new Assimp.Matrix4x4( offsetMatrix.M11, offsetMatrix.M21, offsetMatrix.M31, offsetMatrix.M41,
* offsetMatrix.M12, offsetMatrix.M22, offsetMatrix.M32, offsetMatrix.M42,
* offsetMatrix.M13, offsetMatrix.M23, offsetMatrix.M33, offsetMatrix.M43,
* offsetMatrix.M14, offsetMatrix.M24, offsetMatrix.M34, offsetMatrix.M44 );
*/
aiBone.OffsetMatrix = Assimp.Matrix4x4.Identity;
aiMesh.Bones.Add(aiBone);
}
var material = geometry.Materials[mesh.MaterialIndex];
var aiMaterial = new Assimp.Material();
if (material.IsTextured)
{
// TextureDiffuse
var texture = material.TextureReferenceNode;
aiMaterial.TextureDiffuse = new Assimp.TextureSlot(
texture.Name + ".png", Assimp.TextureType.Diffuse, 0, Assimp.TextureMapping.FromUV, 0, 0, Assimp.TextureOperation.Add, Assimp.TextureWrapMode.Wrap, Assimp.TextureWrapMode.Wrap, 0);
}
// Name
aiMaterial.Name = material.Name ?? $"Geometry{atomic.GeometryIndex}_Material{mesh.MaterialIndex}";
if (material.IsTextured && material.Name == null)
{
aiMaterial.Name = material.TextureReferenceNode.Name;
}
aiMaterial.ShadingMode = Assimp.ShadingMode.Phong;
// Add mesh to meshes
aiScene.Meshes.Add(aiMesh);
// Add material to materials
aiScene.Materials.Add(aiMaterial);
// MaterialIndex
aiMesh.MaterialIndex = aiScene.Materials.Count - 1;
// Add mesh index to node
aiNode.MeshIndices.Add(aiScene.Meshes.Count - 1);
}
}
return(aiScene);
}