/// <summary>
/// Exports all animation
/// </summary>
private void ExportAnimationClip(AnimationClip unityAnimClip, GameObject unityRoot, FbxScene fbxScene)
{
if (unityAnimClip == null)
{
return;
}
// setup anim stack
FbxAnimStack fbxAnimStack = FbxAnimStack.Create(fbxScene, unityAnimClip.name);
fbxAnimStack.Description.Set("Animation Take: " + unityAnimClip.name);
// add one mandatory animation layer
FbxAnimLayer fbxAnimLayer = FbxAnimLayer.Create(fbxScene, "Animation Base Layer");
fbxAnimStack.AddMember(fbxAnimLayer);
// Set up the FPS so our frame-relative math later works out
// Custom frame rate isn't really supported in FBX SDK (there's
// a bug), so try hard to find the nearest time mode.
FbxTime.EMode timeMode = FbxTime.EMode.eCustom;
double precision = 1e-6;
while (timeMode == FbxTime.EMode.eCustom && precision < 1000)
{
timeMode = FbxTime.ConvertFrameRateToTimeMode(unityAnimClip.frameRate, precision);
precision *= 10;
}
if (timeMode == FbxTime.EMode.eCustom)
{
timeMode = FbxTime.EMode.eFrames30;
}
FbxTime.SetGlobalTimeMode(timeMode);
// set time correctly
var fbxStartTime = FbxTime.FromSecondDouble(0);
var fbxStopTime = FbxTime.FromSecondDouble(unityAnimClip.length);
fbxAnimStack.SetLocalTimeSpan(new FbxTimeSpan(fbxStartTime, fbxStopTime));
foreach (EditorCurveBinding unityCurveBinding in AnimationUtility.GetCurveBindings(unityAnimClip))
{
Object unityObj = AnimationUtility.GetAnimatedObject(unityRoot, unityCurveBinding);
if (!unityObj)
{
continue;
}
AnimationCurve unityAnimCurve = AnimationUtility.GetEditorCurve(unityAnimClip, unityCurveBinding);
if (unityAnimCurve == null)
{
continue;
}
ExportAnimCurve(unityObj, unityAnimCurve, unityCurveBinding.propertyName, fbxAnimLayer);
}
}
public void TestSetCurrentAnimStack()
{
using (FbxScene newScene = FbxScene.Create(Manager, "")) {
FbxAnimStack animStack = FbxAnimStack.Create(Manager, "");
newScene.SetCurrentAnimationStack(animStack);
Assert.AreEqual(animStack, newScene.GetCurrentAnimationStack());
// test null
Assert.That(() => { newScene.SetCurrentAnimationStack(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
// test invalid
animStack.Destroy();
Assert.That(() => { newScene.SetCurrentAnimationStack(animStack); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
}
}
protected FbxAnimStack CreateAnimStack(FbxScene scene)
{
FbxAnimStack fbxAnimStack = FbxAnimStack.Create(scene, "animClip");
fbxAnimStack.Description.Set("Animation Take");
FbxTime.EMode timeMode = FbxTime.EMode.eFrames30;
scene.GetGlobalSettings().SetTimeMode(timeMode);
// set time correctly
var fbxStartTime = FbxTime.FromSecondDouble(0);
var fbxStopTime = FbxTime.FromSecondDouble(25);
fbxAnimStack.SetLocalTimeSpan(new FbxTimeSpan(fbxStartTime, fbxStopTime));
return(fbxAnimStack);
}
public void CreateDocument()
{
Scene = FbxScene.Create(SdkManager, "");
FbxDocumentInfo SceneInfo = FbxDocumentInfo.Create(SdkManager, "SceneInfo");
SceneInfo.mTitle = new FbxString("Unreal FBX Exporter");
SceneInfo.mSubject = new FbxString("Export FBX meshes from Unreal");
SceneInfo.Original_ApplicationVendor.Set(new FbxString("Epic Games"));
SceneInfo.Original_ApplicationName.Set(new FbxString("Unreal Engine"));
SceneInfo.Original_ApplicationVersion.Set(new FbxString("4.18"));
SceneInfo.LastSaved_ApplicationVendor.Set(new FbxString("Epic Games"));
SceneInfo.LastSaved_ApplicationName.Set(new FbxString("Unreal Engine"));
SceneInfo.LastSaved_ApplicationVersion.Set(new FbxString("4.18"));
FbxAxisSystem.EFrontVector FrontVector = (FbxAxisSystem.EFrontVector)(0 - FbxAxisSystem.EFrontVector.eParityOdd);
if (bForceFrontXAxis)
{
FrontVector = FbxAxisSystem.EFrontVector.eParityEven;
}
FbxAxisSystem UnrealZUp = new FbxAxisSystem(FbxAxisSystem.EUpVector.eZAxis, FrontVector, FbxAxisSystem.ECoordSystem.eRightHanded);
//const FbxAxisSystem UnrealZUp(FbxAxisSystem.EUpVector, FrontVector, FbxAxisSystem::eRightHanded);
Scene.GetGlobalSettings().SetAxisSystem(FbxAxisSystem.Max);
Scene.GetGlobalSettings().SetOriginalUpAxis(FbxAxisSystem.Max);
Scene.GetGlobalSettings().SetSystemUnit(FbxSystemUnit.cm);
Scene.SetSceneInfo(SceneInfo);
// setup anim stack
AnimStack = FbxAnimStack.Create(Scene, "Unreal Take");
//KFbxSet<KTime>(AnimStack.LocalStart, KTIME_ONE_SECOND);
AnimStack.Description.Set((new FbxString("Animation Take for Unreal.")));
// this take contains one base layer. In fact having at least one layer is mandatory.
AnimLayer = FbxAnimLayer.Create(Scene, "Base Layer");
AnimStack.AddMember(AnimLayer);
//if(Mathf)
}
// tests that should work for any subclass of FbxProperty
public static void GenericPropertyTests <T>(T property, FbxObject parent, string propertyName, FbxDataType dataType) where T : FbxProperty
{
Assert.IsTrue(property.IsValid());
Assert.AreEqual(dataType, property.GetPropertyDataType());
Assert.AreEqual(propertyName, property.GetName());
Assert.AreEqual(propertyName, property.ToString());
Assert.AreEqual(propertyName, property.GetHierarchicalName());
Assert.AreEqual(propertyName, property.GetLabel(true));
property.SetLabel("label");
Assert.AreEqual("label", property.GetLabel());
Assert.AreEqual(parent, property.GetFbxObject());
Assert.AreEqual(property.GetFbxObject(), parent); // test it both ways just in case equals is busted
// test the flags using the animatable flag
property.ModifyFlag(FbxPropertyFlags.EFlags.eAnimatable, true);
Assert.IsTrue(property.GetFlag(FbxPropertyFlags.EFlags.eAnimatable));
Assert.AreNotEqual(0, property.GetFlags() | FbxPropertyFlags.EFlags.eAnimatable);
property.SetFlagInheritType(FbxPropertyFlags.EFlags.eAnimatable, FbxPropertyFlags.EInheritType.eInherit);
Assert.AreEqual(FbxPropertyFlags.EInheritType.eInherit, property.GetFlagInheritType(FbxPropertyFlags.EFlags.eAnimatable));
// not clear when this ever returns true: whether we set animatable
// to true or false it says it has the default value.
Assert.IsFalse(property.ModifiedFlag(FbxPropertyFlags.EFlags.eAnimatable));
// Test setting the value with the generic float accessor.
// The value may not round-trip: a bool property will go to 1.0
property.Set(5.0f);
TestGetter(property.GetFloat());
TestGetter(property.GetBool());
TestGetter(property.GetDouble());
TestGetter(property.GetFbxColor());
TestGetter(property.GetFbxDouble3());
TestGetter(property.GetString());
TestGetter(property.GetInt());
// Test setting the value with color accessor
property.Set(new FbxColor());
// test GetCurve(). Just make sure it doesn't crash. We can't
// generically test actually getting curves, because the details
// (channel names etc) depend on the type of property and its
// flags.
FbxAnimLayer layer = FbxAnimLayer.Create(parent, "layer");
property.GetCurve(layer);
property.GetCurve(layer, true);
property.GetCurve(layer, "asdf");
property.GetCurve(layer, "asdf", true);
property.GetCurve(layer, "asdf", "hjkl", true);
Assert.That(() => { property.GetCurve(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
// test GetCurveNode() (make sure it doesn't crash)
FbxAnimCurveNode curveNode = property.GetCurveNode();
Assert.IsNull(curveNode); // didn't create one so should be null
curveNode = property.GetCurveNode(true);
// TODO: figure out why the curve node doesn't get created
//Assert.IsNotNull (curveNode);
property.GetCurveNode(FbxAnimStack.Create(parent, "anim stack"));
property.GetCurveNode(FbxAnimStack.Create(parent, "anim stack"), true);
property.GetCurveNode(FbxAnimLayer.Create(parent, "anim layer"));
property.GetCurveNode(FbxAnimLayer.Create(parent, "anim layer"), true);
Assert.That(() => { property.GetCurveNode((FbxAnimStack)null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
Assert.That(() => { property.GetCurveNode((FbxAnimLayer)null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
using (FbxManager manager = FbxManager.Create()) {
// Test ConnectSrcObject functions
FbxObject obj = FbxObject.Create(manager, "obj");
bool result = property.ConnectSrcObject(obj);
Assert.IsTrue(result);
Assert.IsTrue(property.IsConnectedSrcObject(obj));
Assert.AreEqual(1, property.GetSrcObjectCount());
Assert.AreEqual(obj, property.GetSrcObject());
Assert.AreEqual(obj, property.GetSrcObject(0));
Assert.AreEqual(obj, property.FindSrcObject("obj"));
Assert.IsNull(property.FindSrcObject("obj", 1));
Assert.That(() => { property.FindSrcObject(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
Assert.IsTrue(property.DisconnectSrcObject(obj));
Assert.IsFalse(property.IsConnectedSrcObject(obj));
Assert.That(() => { property.ConnectSrcObject(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
Assert.IsTrue(property.ConnectSrcObject(obj, FbxConnection.EType.eData));
Assert.IsTrue(property.DisconnectAllSrcObject());
// Test ConnectDstObject functions
result = property.ConnectDstObject(obj);
Assert.IsTrue(result);
Assert.IsTrue(property.IsConnectedDstObject(obj));
Assert.AreEqual(1, property.GetDstObjectCount());
Assert.AreEqual(obj, property.GetDstObject());
Assert.AreEqual(obj, property.GetDstObject(0));
Assert.AreEqual(obj, property.FindDstObject("obj"));
Assert.IsNull(property.FindDstObject("obj", 1));
Assert.That(() => { property.FindDstObject(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
Assert.IsTrue(property.DisconnectDstObject(obj));
Assert.IsFalse(property.IsConnectedDstObject(obj));
Assert.That(() => { property.ConnectDstObject(null); }, Throws.Exception.TypeOf <System.ArgumentNullException>());
Assert.IsTrue(property.ConnectDstObject(obj, FbxConnection.EType.eData));
Assert.IsTrue(property.DisconnectAllDstObject());
}
// verify this in the future: will dispose destroy?
property.Dispose();
}
/// <summary>
/// Export an AnimationClip as a single take
/// </summary>
protected void ExportAnimationClip(AnimationClip unityAnimClip, GameObject unityRoot, FbxScene fbxScene)
{
if (Verbose)
{
Debug.Log(string.Format("exporting clip {1} for {0}", unityRoot.name, unityAnimClip.name));
}
// setup anim stack
FbxAnimStack fbxAnimStack = FbxAnimStack.Create(fbxScene, unityAnimClip.name);
fbxAnimStack.Description.Set("Animation Take: " + unityAnimClip.name);
// add one mandatory animation layer
FbxAnimLayer fbxAnimLayer = FbxAnimLayer.Create(fbxScene, "Animation Base Layer");
fbxAnimStack.AddMember(fbxAnimLayer);
// Set up the FPS so our frame-relative math later works out
// Custom frame rate isn't really supported in FBX SDK (there's
// a bug), so try hard to find the nearest time mode.
FbxTime.EMode timeMode = FbxTime.EMode.eCustom;
double precision = 1e-6;
while (timeMode == FbxTime.EMode.eCustom && precision < 1000)
{
timeMode = FbxTime.ConvertFrameRateToTimeMode(unityAnimClip.frameRate, precision);
precision *= 10;
}
if (timeMode == FbxTime.EMode.eCustom)
{
timeMode = FbxTime.EMode.eFrames30;
}
FbxTime.SetGlobalTimeMode(timeMode);
// set time correctly
var fbxStartTime = FbxTime.FromSecondDouble(0);
var fbxStopTime = FbxTime.FromSecondDouble(unityAnimClip.length);
fbxAnimStack.SetLocalTimeSpan(new FbxTimeSpan(fbxStartTime, fbxStopTime));
/* The major difficulty: Unity uses quaternions for rotation
* (which is how it should be) but FBX uses euler angles. So we
* need to gather up the list of transform curves per object. */
var quaternions = new Dictionary <UnityEngine.GameObject, QuaternionCurve> ();
foreach (EditorCurveBinding unityCurveBinding in AnimationUtility.GetCurveBindings(unityAnimClip))
{
Object unityObj = AnimationUtility.GetAnimatedObject(unityRoot, unityCurveBinding);
if (!unityObj)
{
continue;
}
AnimationCurve unityAnimCurve = AnimationUtility.GetEditorCurve(unityAnimClip, unityCurveBinding);
if (unityAnimCurve == null)
{
continue;
}
int index = QuaternionCurve.GetQuaternionIndex(unityCurveBinding.propertyName);
if (index == -1)
{
if (Verbose)
{
Debug.Log(string.Format("export binding {1} for {0}", unityCurveBinding.propertyName, unityObj.ToString()));
}
/* Some normal property (e.g. translation), export right away */
ExportAnimCurve(unityObj, unityAnimCurve, unityCurveBinding.propertyName,
fbxScene, fbxAnimLayer);
}
else
{
/* Rotation property; save it to convert quaternion -> euler later. */
var unityGo = GetGameObject(unityObj);
if (!unityGo)
{
continue;
}
QuaternionCurve quat;
if (!quaternions.TryGetValue(unityGo, out quat))
{
quat = new QuaternionCurve();
quaternions.Add(unityGo, quat);
}
quat.SetCurve(index, unityAnimCurve);
}
}
/* now export all the quaternion curves */
foreach (var kvp in quaternions)
{
var unityGo = kvp.Key;
var quat = kvp.Value;
FbxNode fbxNode;
if (!MapUnityObjectToFbxNode.TryGetValue(unityGo, out fbxNode))
{
Debug.LogError(string.Format("no fbxnode found for '0'", unityGo.name));
continue;
}
quat.Animate(unityGo.transform, fbxNode, fbxAnimLayer, Verbose);
}
}
