/// <summary>
/// Load an FBX file from a file on disk.
/// </summary>
/// <param name="filename">
/// The filename of the FBX file to load.
/// </param>
/// <param name="additionalAnimationFiles">
/// A dictionary mapping of animation names to filenames for additional FBX files to load.
/// </param>
/// <returns>
/// The loaded <see cref="IModel"/>.
/// </returns>
public IModel Load(string filename, Dictionary <string, string> additionalAnimationFiles)
{
this.LoadAssimpLibrary();
// Import the scene via AssImp.
var importer = new AssimpContext();
const PostProcessSteps ProcessFlags = 0
| PostProcessSteps.FlipUVs
| PostProcessSteps.FlipWindingOrder
;
var scene = importer.ImportFile(filename, ProcessFlags);
VertexPositionNormalTextureBlendable[] vertexes;
int[] indices;
IModelBone boneHierarchy;
if (scene.MeshCount >= 1)
{
var boneWeightingMap = this.BuildBoneWeightingMap(scene);
boneHierarchy = this.ImportBoneHierarchy(scene.RootNode, scene.Meshes[0]);
vertexes = this.ImportVertexes(scene, boneWeightingMap);
indices = this.ImportIndices(scene);
}
else
{
boneHierarchy = this.ImportBoneHierarchy(scene.RootNode, null);
vertexes = new VertexPositionNormalTextureBlendable[0];
indices = new int[0];
}
// Create the list of animations, including the null animation.
var animations = new List <IAnimation>();
// Import the basic animation.
if (scene.AnimationCount > 0)
{
animations.AddRange(
scene.Animations.Select(
assimpAnimation => this.ImportAnimation(assimpAnimation.Name, assimpAnimation)));
}
// For each additional animation file, import that and add the animation to the existing scene.
animations.AddRange(
from kv in additionalAnimationFiles
let animationImporter = new AssimpContext()
let additionalScene = animationImporter.ImportFile(kv.Value, ProcessFlags)
where additionalScene.AnimationCount == 1
select this.ImportAnimation(kv.Key, additionalScene.Animations[0]));
// Return the resulting model.
return(new Model(
new AnimationCollection(animations),
boneHierarchy,
vertexes,
indices));
}
/// <summary>
/// Initializes a new instance of the <see cref="Model"/> class.
/// </summary>
/// <param name="availableAnimations">
/// The available animations.
/// </param>
/// <param name="rootBone">
/// The root bone, or null if there's no skeletal information.
/// </param>
/// <param name="vertexes">
/// The vertexes associated with this model.
/// </param>
/// <param name="indices">
/// The indices associated with the model.
/// </param>
public Model(
IAnimationCollection availableAnimations,
IModelBone rootBone,
VertexPositionNormalTextureBlendable[] vertexes,
int[] indices)
{
this.AvailableAnimations = availableAnimations;
this.Root = rootBone;
this.Vertexes = vertexes;
this.Indices = indices;
if (this.Root != null)
{
this.m_FlattenedBones = this.Root.Flatten();
this.Bones = this.m_FlattenedBones.ToDictionary(k => k.Name, v => v);
}
}
/// <summary>
/// Indicates whether this instance and a specified object are equal.
/// </summary>
/// <param name="other">
/// The object to compare this instance to.
/// </param>
/// <returns>
/// Whether or not this instance is equal to the specified object.
/// </returns>
public bool Equals(VertexPositionNormalTextureBlendable other)
{
return(this.Position.Equals(other.Position) && this.Normal.Equals(other.Normal) && this.TextureCoordinate.Equals(other.TextureCoordinate) && this.BoneWeights.Equals(other.BoneWeights) && this.BoneIndices.Equals(other.BoneIndices));
}
/// <summary>
/// Indicates whether this instance and a specified object are equal.
/// </summary>
/// <param name="other">
/// The object to compare this instance to.
/// </param>
/// <returns>
/// Whether or not this instance is equal to the specified object.
/// </returns>
public bool Equals(VertexPositionNormalTextureBlendable other)
{
return this.Position.Equals(other.Position) && this.Normal.Equals(other.Normal) && this.TextureCoordinate.Equals(other.TextureCoordinate) && this.BoneWeights.Equals(other.BoneWeights) && this.BoneIndices.Equals(other.BoneIndices);
}
