private void InitSkinInfo(Assimp.Mesh mesh, AssimpSceneContainer container)
{
var boneIDs = new uvec4[mesh.VertexCount];
var boneWeights = new vec4[mesh.VertexCount];
AllBoneInfos allBones = container.GetAllBoneInfos();
Dictionary <string, uint> nameIndexDict = allBones.nameIndexDict;
for (int i = 0; i < mesh.BoneCount; i++)
{
Assimp.Bone bone = mesh.Bones[i]; // bones that influence this mesh.
uint boneIndex = nameIndexDict[bone.Name];
for (int j = 0; j < bone.VertexWeightCount; j++)
{
Assimp.VertexWeight vertexWeight = bone.VertexWeights[j];
uint vertexID = vertexWeight.VertexID;
for (int t = 0; t < 4; t++)
{
if (boneWeights[vertexID][t] == 0.0f) // fill in x y z w.
{
boneIDs[vertexID][t] = boneIndex;
boneWeights[vertexID][t] = vertexWeight.Weight;
break;
}
}
}
}
this.boneIDs = boneIDs;
this.boneWeights = boneWeights;
}
private void OpenFile(string filename)
{
var importer = new Assimp.AssimpImporter();
Assimp.Scene aiScene = null;
try
{
aiScene = importer.ImportFile(filename, Assimp.PostProcessSteps.GenerateSmoothNormals | Assimp.PostProcessSteps.Triangulate | Assimp.PostProcessSteps.FlipUVs);
}
catch (Exception ex) { MessageBox.Show(ex.Message); return; }
var container = new AssimpSceneContainer(aiScene, filename);
CreateAnimationNodes(aiScene, container);
CreateSkeletonNode(aiScene, container);
CreateJointNode(aiScene, container);
{
this.cmbAnimationIndex.Items.Clear();
int count = container.aiScene.AnimationCount;
for (int i = 0; i < count; i++)
{
this.cmbAnimationIndex.Items.Add(string.Format("Animation {0}", i));
}
}
}
private void CreateSkeletonNode(Assimp.Scene aiScene, AssimpSceneContainer container)
{
var rootElement = this.scene.RootNode;
var model = new SkeletonModel(aiScene, container.GetAllBoneInfos());
var node = SkeletonNode.Create(model);
this.skeletonNode = node;
rootElement.Children.Add(node);
}
private void CreateJointNode(Assimp.Scene aiScene, AssimpSceneContainer container)
{
var rootElement = this.scene.RootNode;
var model = new JointModel(aiScene, container.GetAllBoneInfos());
var node = JointNode.Create(model);
node.DiffuseColor = Color.Red;
this.jointNode = node;
rootElement.Children.Add(node);
}
private void CreateAnimationNodes(Assimp.Scene aiScene, AssimpSceneContainer container)
{
var rootElement = this.scene.RootNode;
bool first = true; vec3 max = new vec3(); vec3 min = new vec3();
var models = new AnimationModel[aiScene.MeshCount];
if (aiScene.HasMeshes)
{
int index = 0;
foreach (Assimp.Mesh mesh in aiScene.Meshes)
{
models[index++] = new AnimationModel(mesh, container);
}
}
if (aiScene.RootNode != null)
{
mat4 parentTransform = mat4.identity();
BuildNode(aiScene.RootNode, parentTransform, models, rootElement, ref max, ref min, ref first);
}
vec3 center = max / 2.0f + min / 2.0f;
vec3 size = max - min;
float v = size.x;
if (v < size.y)
{
v = size.y;
}
if (v < size.z)
{
v = size.z;
}
this.scene.Camera.Position = center + size;
this.scene.Camera.Target = center;
//rootElement.WorldPosition = center;
this.manipulater.StepLength = v / 30.0f;
}
public AnimationModel(Assimp.Mesh mesh, AssimpSceneContainer container)
{
this.mesh = mesh;
this.container = container;
InitSkinInfo(mesh, container);
}