private bool ExportMorphTargetWeightAnimation(BabylonMorphTargetManager babylonMorphTargetManager, GLTF gltf, GLTFNode gltfNode, List <GLTFChannel> channelList, List <GLTFAnimationSampler> samplerList)
{
if (!_isBabylonMorphTargetManagerAnimationValid(babylonMorphTargetManager))
{
return(false);
}
RaiseMessage("GLTFExporter.Animation | Export animation of morph target manager with id: " + babylonMorphTargetManager.id, 2);
var influencesPerFrame = _getTargetManagerAnimationsData(babylonMorphTargetManager);
var frames = new List <int>(influencesPerFrame.Keys);
frames.Sort(); // Mandatory otherwise gltf loader of babylon doesn't understand
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = "weights";
// Buffer
var buffer = GLTFBufferService.Instance.GetBuffer(gltf);
// --- Input ---
var accessorInput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationInput",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
accessorInput.min = new float[] { float.MaxValue };
accessorInput.max = new float[] { float.MinValue };
foreach (var frame in frames)
{
var inputValue = frame / FPS_FACTOR;
// Store values as bytes
accessorInput.bytesList.AddRange(BitConverter.GetBytes(inputValue));
// Update min and max values
GLTFBufferService.UpdateMinMaxAccessor(accessorInput, inputValue);
}
accessorInput.count = influencesPerFrame.Count;
// --- Output ---
GLTFAccessor accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationWeights",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
foreach (var frame in frames)
{
var outputValues = influencesPerFrame[frame];
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.count++;
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
return(true);
}
private bool ExportMorphTargetWeightAnimation(BabylonMorphTargetManager babylonMorphTargetManager, GLTF gltf, GLTFNode gltfNode, List <GLTFChannel> channelList, List <GLTFAnimationSampler> samplerList, int startFrame, int endFrame)
{
if (!_isBabylonMorphTargetManagerAnimationValid(babylonMorphTargetManager))
{
return(false);
}
RaiseMessage("GLTFExporter.Animation | Export animation of morph target manager with id: " + babylonMorphTargetManager.id, 2);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = "weights";
// Buffer
var buffer = GLTFBufferService.Instance.GetBuffer(gltf);
// --- Input ---
var accessorInput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationInput",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
accessorInput.min = new float[] { float.MaxValue };
accessorInput.max = new float[] { float.MinValue };
var influencesPerFrame = _getTargetManagerAnimationsData(babylonMorphTargetManager);
var frames = new List <int>(influencesPerFrame.Keys);
frames.Sort(); // Mandatory otherwise gltf loader of babylon doesn't understand
int numKeys = 0;
foreach (var frame in frames)
{
if (frame < startFrame)
{
continue;
}
if (frame > endFrame)
{
continue;
}
numKeys++;
var inputValue = frame / (float)Loader.Global.FrameRate;
// Store values as bytes
accessorInput.bytesList.AddRange(BitConverter.GetBytes(inputValue));
// Update min and max values
GLTFBufferService.UpdateMinMaxAccessor(accessorInput, inputValue);
}
accessorInput.count = numKeys;
// bail out if we have no keys to export (?)
// todo [KeyInterpolation]: bail out only when there are no keyframes at all (?) and otherwise add the appropriate (interpolated) keyframes
if (numKeys == 0)
{
return(false);
}
// --- Output ---
GLTFAccessor accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationWeights",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
foreach (var frame in frames)
{
if (frame < startFrame)
{
continue;
}
if (frame > endFrame)
{
continue;
}
var outputValues = influencesPerFrame[frame];
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.count++;
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
return(true);
}
private static float FPS_FACTOR = 60.0f; // TODO - Which FPS factor ?
private GLTFAnimation ExportNodeAnimation(BabylonNode babylonNode, GLTF gltf, GLTFNode gltfNode, BabylonScene babylonScene = null)
{
var channelList = new List <GLTFChannel>();
var samplerList = new List <GLTFAnimationSampler>();
if (babylonNode.animations != null && babylonNode.animations.Length > 0)
{
RaiseMessage("GLTFExporter.Animation | Export animation of node named: " + babylonNode.name, 2);
foreach (BabylonAnimation babylonAnimation in babylonNode.animations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
if (gltfTarget.path == null)
{
// Unkown babylon animation property
RaiseWarning("GLTFExporter.Animation | Unkown animation property '" + babylonAnimation.property + "'", 3);
// Ignore this babylon animation
continue;
}
// Buffer
var buffer = GLTFBufferService.Instance.GetBuffer(gltf);
// --- Input ---
var accessorInput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationInput",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
accessorInput.min = new float[] { float.MaxValue };
accessorInput.max = new float[] { float.MinValue };
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
var inputValue = babylonAnimationKey.frame / FPS_FACTOR;
// Store values as bytes
accessorInput.bytesList.AddRange(BitConverter.GetBytes(inputValue));
// Update min and max values
GLTFBufferService.UpdateMinMaxAccessor(accessorInput, inputValue);
}
;
accessorInput.count = babylonAnimation.keys.Length;
// --- Output ---
GLTFAccessor accessorOutput = null;
switch (gltfTarget.path)
{
case "translation":
accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatVec3(gltf, buffer),
"accessorAnimationPositions",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.VEC3
);
break;
case "rotation":
accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatVec4(gltf, buffer),
"accessorAnimationRotations",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.VEC4
);
break;
case "scale":
accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatVec3(gltf, buffer),
"accessorAnimationScales",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.VEC3
);
break;
}
// Populate accessor
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
var outputValues = babylonAnimationKey.values;
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = babylonAnimation.keys.Length;
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList);
}
}
// Do not export empty arrays
if (channelList.Count > 0)
{
// Animation
var gltfAnimation = new GLTFAnimation
{
channels = channelList.ToArray(),
samplers = samplerList.ToArray()
};
gltf.AnimationsList.Add(gltfAnimation);
return(gltfAnimation);
}
else
{
return(null);
}
}
private void ExportNodeAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonNode babylonNode, GLTFNode gltfNode, BabylonScene babylonScene)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
bool exportNonAnimated = Loader.Core.RootNode.GetBoolProperty("babylonjs_animgroup_exportnonanimated");
// Combine babylon animations from .babylon file and cached ones
var babylonAnimations = new List <BabylonAnimation>();
if (babylonNode.animations != null)
{
babylonAnimations.AddRange(babylonNode.animations);
}
if (babylonNode.extraAnimations != null)
{
babylonAnimations.AddRange(babylonNode.extraAnimations);
}
// Filter animations to only keep TRS ones
babylonAnimations = babylonAnimations.FindAll(babylonAnimation => _getTargetPath(babylonAnimation.property) != null);
// Optimize animations to only keep ones animated between start and end frames
var optimizeAnimations = !Loader.Core.RootNode.GetBoolProperty("babylonjs_donotoptimizeanimations"); // reverse negation for clarity
if (optimizeAnimations)
{
List <BabylonAnimation> babylonAnimationsOptimized = new List <BabylonAnimation>();
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
// Filter animation keys to only keep frames between start and end
List <BabylonAnimationKey> keysInRangeFull = babylonAnimation.keysFull.FindAll(babylonAnimationKey => babylonAnimationKey.frame >= startFrame && babylonAnimationKey.frame <= endFrame);
// Optimization process always keeps first and last frames
OptimizeAnimations(keysInRangeFull, true);
if (IsAnimationKeysRelevant(keysInRangeFull))
{
// Override animation keys
babylonAnimation.keys = keysInRangeFull.ToArray();
babylonAnimationsOptimized.Add(babylonAnimation);
}
}
// From now, use optimized animations instead
babylonAnimations = babylonAnimationsOptimized;
}
if (babylonAnimations.Count > 0 || exportNonAnimated)
{
if (babylonAnimations.Count > 0)
{
RaiseMessage("GLTFExporter.Animation | Export animations of node named: " + babylonNode.name, 2);
}
else if (exportNonAnimated)
{
RaiseMessage("GLTFExporter.Animation | Export dummy animation for node named: " + babylonNode.name, 2);
// Export a dummy animation
babylonAnimations.Add(GetDummyAnimation(gltfNode, startFrame, endFrame));
}
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
continue;
}
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
int numKeys = 0;
QuatCorrection quatCorr = new QuatCorrection(); // restart correction for each curve
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
if (babylonAnimationKey.frame < startFrame)
{
continue;
}
if (babylonAnimationKey.frame > endFrame)
{
continue;
}
numKeys++;
// copy data before changing it in case animation groups overlap
float[] outputValues = new float[babylonAnimationKey.values.Length];
babylonAnimationKey.values.CopyTo(outputValues, 0);
// Switch coordinate system at object level
if (babylonAnimation.property == "position")
{
outputValues[2] *= -1;
}
else if (babylonAnimation.property == "rotationQuaternion")
{
quatCorr.Quat = new BabylonQuaternion(outputValues[0], outputValues[1], outputValues[2], outputValues[3]);
if (exportParameters.kuesaContQuats)
{
quatCorr.Quat = new BabylonQuaternion(outputValues[0], outputValues[1], outputValues[2], outputValues[3]);
outputValues[0] = quatCorr.Quat.X;
outputValues[1] = quatCorr.Quat.Y;
outputValues[2] = quatCorr.Quat.Z;
outputValues[3] = quatCorr.Quat.W;
}
outputValues[0] *= -1;
outputValues[1] *= -1;
}
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = numKeys;
// bail out if no keyframes to export (?)
// todo [KeyInterpolation]: bail out only when there are no keyframes at all (?) and otherwise add the appropriate (interpolated) keyframes
if (numKeys == 0)
{
continue;
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList, startFrame, endFrame);
}
}
}
private void ExportBoneAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonBone babylonBone, GLTFNode gltfNode)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if (babylonBone.animation != null && babylonBone.animation.property == "_matrix")
{
RaiseMessage("GLTFExporter.Animation | Export animation of bone named: " + babylonBone.name, 2);
var babylonAnimation = babylonBone.animation;
// Optimize animation
var optimizeAnimations = !Loader.Core.RootNode.GetBoolProperty("babylonjs_donotoptimizeanimations"); // reverse negation for clarity
if (optimizeAnimations)
{
// Filter animation keys to only keep frames between start and end
List <BabylonAnimationKey> keysInRangeFull = babylonAnimation.keysFull.FindAll(babylonAnimationKey => babylonAnimationKey.frame >= startFrame && babylonAnimationKey.frame <= endFrame);
// Optimization process always keeps first and last frames
OptimizeAnimations(keysInRangeFull, false);
if (IsAnimationKeysRelevant(keysInRangeFull))
{
// From now, use optimized animation instead
// Override animation keys
babylonAnimation.keys = keysInRangeFull.ToArray();
}
}
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
return;
}
// --- Output ---
var paths = new string[] { "translation", "rotation", "scale" };
var accessorOutputByPath = new Dictionary <string, GLTFAccessor>();
foreach (string path in paths)
{
GLTFAccessor accessorOutput = _createAccessorOfPath(path, gltf);
accessorOutputByPath.Add(path, accessorOutput);
}
// Populate accessors
QuatCorrection quatCorr = new QuatCorrection(); // restart correction for each curve
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
if (babylonAnimationKey.frame < startFrame)
{
continue;
}
if (babylonAnimationKey.frame > endFrame)
{
continue;
}
var matrix = new BabylonMatrix();
matrix.m = babylonAnimationKey.values;
var translationBabylon = new BabylonVector3();
var rotationQuatBabylon = new BabylonQuaternion();
var scaleBabylon = new BabylonVector3();
matrix.decompose(scaleBabylon, rotationQuatBabylon, translationBabylon);
translationBabylon.Z *= -1;
if (exportParameters.kuesaContQuats)
{
quatCorr.Quat = rotationQuatBabylon;
rotationQuatBabylon = quatCorr.Quat;
}
rotationQuatBabylon.X *= -1;
rotationQuatBabylon.Y *= -1;
var outputValuesByPath = new Dictionary <string, float[]>();
outputValuesByPath.Add("translation", translationBabylon.ToArray());
outputValuesByPath.Add("rotation", rotationQuatBabylon.ToArray());
outputValuesByPath.Add("scale", scaleBabylon.ToArray());
// Store values as bytes
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
var outputValues = outputValuesByPath[path];
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
accessorOutput.count++;
}
}
;
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = path;
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
}
private void ExportBoneAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonNode babylonNode, GLTFNode gltfNode, BabylonAnimationGroup animationGroup = null)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if (babylonNode.animations != null && babylonNode.animations[0].property == "_matrix")
{
logger.RaiseMessage("GLTFExporter.Animation | Export animation of bone named: " + babylonNode.name, 2);
BabylonAnimation babylonAnimation = null;
if (animationGroup != null)
{
var targetedAnimation = animationGroup.targetedAnimations.FirstOrDefault(animation => animation.targetId == babylonNode.id);
if (targetedAnimation != null)
{
babylonAnimation = targetedAnimation.animation;
}
}
// otherwise fall back to the full animation track on the node.
if (babylonAnimation == null)
{
babylonAnimation = babylonNode.animations[0];
}
var babylonAnimationKeysInRange = babylonAnimation.keys.Where(key => key.frame >= startFrame && key.frame <= endFrame);
if (babylonAnimationKeysInRange.Count() <= 0)
{
return;
}
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
return;
}
// --- Output ---
var paths = new string[] { "translation", "rotation", "scale" };
var accessorOutputByPath = new Dictionary <string, GLTFAccessor>();
foreach (string path in paths)
{
GLTFAccessor accessorOutput = _createAccessorOfPath(path, gltf);
accessorOutputByPath.Add(path, accessorOutput);
}
// Populate accessors
foreach (var babylonAnimationKey in babylonAnimationKeysInRange)
{
var matrix = new BabylonMatrix();
matrix.m = babylonAnimationKey.values;
var translationBabylon = new BabylonVector3();
var rotationQuatBabylon = new BabylonQuaternion();
var scaleBabylon = new BabylonVector3();
matrix.decompose(scaleBabylon, rotationQuatBabylon, translationBabylon);
// Switch coordinate system at object level
translationBabylon.Z *= -1;
rotationQuatBabylon.X *= -1;
rotationQuatBabylon.Y *= -1;
var outputValuesByPath = new Dictionary <string, float[]>();
outputValuesByPath.Add("translation", translationBabylon.ToArray());
outputValuesByPath.Add("rotation", rotationQuatBabylon.ToArray());
outputValuesByPath.Add("scale", scaleBabylon.ToArray());
// Store values as bytes
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
var outputValues = outputValuesByPath[path];
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
accessorOutput.count++;
}
}
;
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = path;
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
ExportGLTFExtension(babylonNode, ref gltfAnimation, gltf);
}
private bool ExportMorphTargetWeightAnimation(BabylonMorphTargetManager babylonMorphTargetManager, GLTF gltf, GLTFNode gltfNode, List <GLTFChannel> channelList, List <GLTFAnimationSampler> samplerList, int startFrame, int endFrame, BabylonScene babylonScene, bool offsetToStartAtFrameZero = true)
{
if (exportedMorphTargets.Contains(babylonMorphTargetManager) || !_isBabylonMorphTargetManagerAnimationValid(babylonMorphTargetManager))
{
return(false);
}
var influencesPerFrame = _getTargetManagerAnimationsData(babylonMorphTargetManager);
var frames = new List <float>(influencesPerFrame.Keys);
var framesInRange = frames.Where(frame => frame >= startFrame && frame <= endFrame).ToList();
framesInRange.Sort(); // Mandatory to sort otherwise gltf loader of babylon doesn't understand
if (framesInRange.Count() <= 0)
{
return(false);
}
logger.RaiseMessage("GLTFExporter.Animation | Export animation of morph target manager with id: " + babylonMorphTargetManager.id, 2);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = "weights";
// Buffer
var buffer = GLTFBufferService.Instance.GetBuffer(gltf);
// --- Input ---
var accessorInput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationInput",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
accessorInput.min = new float[] { float.MaxValue };
accessorInput.max = new float[] { float.MinValue };
int numKeys = 0;
foreach (var frame in framesInRange)
{
numKeys++;
float inputValue = frame;
if (offsetToStartAtFrameZero)
{
inputValue -= startFrame;
}
inputValue /= (float)babylonScene.TimelineFramesPerSecond;
// Store values as bytes
accessorInput.bytesList.AddRange(BitConverter.GetBytes(inputValue));
// Update min and max values
GLTFBufferService.UpdateMinMaxAccessor(accessorInput, inputValue);
}
accessorInput.count = numKeys;
if (accessorInput.count == 0)
{
logger.RaiseWarning(String.Format("GLTFExporter.Animation | No frames to export in morph target animation \"weight\" for mesh named \"{0}\". This will cause an error in the output gltf.", babylonMorphTargetManager.sourceMesh.name));
}
// --- Output ---
GLTFAccessor accessorOutput = GLTFBufferService.Instance.CreateAccessor(
gltf,
GLTFBufferService.Instance.GetBufferViewAnimationFloatScalar(gltf, buffer),
"accessorAnimationWeights",
GLTFAccessor.ComponentType.FLOAT,
GLTFAccessor.TypeEnum.SCALAR
);
// Populate accessor
foreach (var frame in framesInRange)
{
var outputValues = influencesPerFrame[frame];
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.count++;
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
// Mark this morph target as exported.
exportedMorphTargets.Add(babylonMorphTargetManager);
return(true);
}
private GLTFAnimation ExportBoneAnimation(BabylonBone babylonBone, GLTF gltf, GLTFNode gltfNode)
{
GLTFAnimation gltfAnimation = null;
if (gltf.AnimationsList.Count > 0)
{
gltfAnimation = gltf.AnimationsList[0];
}
else
{
gltfAnimation = new GLTFAnimation();
gltf.AnimationsList.Add(gltfAnimation);
}
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if (babylonBone.animation != null && babylonBone.animation.property == "_matrix")
{
RaiseMessage("GLTFExporter.Animation | Export animation of bone named: " + babylonBone.name, 2);
var babylonAnimation = babylonBone.animation;
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation);
// --- Output ---
var paths = new string[] { "translation", "rotation", "scale" };
var accessorOutputByPath = new Dictionary <string, GLTFAccessor>();
foreach (string path in paths)
{
GLTFAccessor accessorOutput = _createAccessorOfPath(path, gltf);
accessorOutputByPath.Add(path, accessorOutput);
}
// Populate accessors
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
var matrix = new BabylonMatrix();
matrix.m = babylonAnimationKey.values;
var translationBabylon = new BabylonVector3();
var rotationQuatBabylon = new BabylonQuaternion();
var scaleBabylon = new BabylonVector3();
matrix.decompose(scaleBabylon, rotationQuatBabylon, translationBabylon);
translationBabylon.Z *= -1;
BabylonVector3 rotationVector3 = rotationQuatBabylon.toEulerAngles();
rotationVector3.X *= -1;
rotationVector3.Y *= -1;
rotationQuatBabylon = rotationVector3.toQuaternion();
var outputValuesByPath = new Dictionary <string, float[]>();
outputValuesByPath.Add("translation", translationBabylon.ToArray());
outputValuesByPath.Add("rotation", rotationQuatBabylon.ToArray());
outputValuesByPath.Add("scale", scaleBabylon.ToArray());
// Store values as bytes
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
var outputValues = outputValuesByPath[path];
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
accessorOutput.count++;
}
}
;
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = path;
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
return(gltfAnimation);
}
private void ExportNodeAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonNode babylonNode, GLTFNode gltfNode, BabylonScene babylonScene, BabylonAnimationGroup animationGroup = null)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
bool exportNonAnimated = exportParameters.animgroupExportNonAnimated;
// Combine babylon animations from .babylon file and cached ones
var babylonAnimations = new List <BabylonAnimation>();
if (animationGroup != null)
{
var targetedAnimations = animationGroup.targetedAnimations.Where(animation => animation.targetId == babylonNode.id);
foreach (var targetedAnimation in targetedAnimations)
{
babylonAnimations.Add(targetedAnimation.animation);
}
}
// Do not include the node animations if a provided animation group already includes them.
if (babylonAnimations.Count <= 0)
{
if (babylonNode.animations != null)
{
babylonAnimations.AddRange(babylonNode.animations);
}
if (babylonNode.extraAnimations != null)
{
babylonAnimations.AddRange(babylonNode.extraAnimations);
}
}
// Filter animations to only keep TRS ones
babylonAnimations = babylonAnimations.FindAll(babylonAnimation => _getTargetPath(babylonAnimation.property) != null);
if (babylonAnimations.Count > 0 || exportNonAnimated)
{
if (babylonAnimations.Count > 0)
{
logger.RaiseMessage("GLTFExporter.Animation | Export animations of node named: " + babylonNode.name, 2);
}
else if (exportNonAnimated)
{
logger.RaiseMessage("GLTFExporter.Animation | Export dummy animation for node named: " + babylonNode.name, 2);
// Export a dummy animation
babylonAnimations.Add(GetDummyAnimation(gltfNode, startFrame, endFrame, babylonScene));
}
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
var babylonAnimationKeysInRange = babylonAnimation.keys.Where(key => key.frame >= startFrame && key.frame <= endFrame);
if (babylonAnimationKeysInRange.Count() <= 0)
{
continue;
}
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
continue;
}
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
int numKeys = 0;
foreach (var babylonAnimationKey in babylonAnimationKeysInRange)
{
numKeys++;
// copy data before changing it in case animation groups overlap
float[] outputValues = new float[babylonAnimationKey.values.Length];
babylonAnimationKey.values.CopyTo(outputValues, 0);
// Switch coordinate system at object level
if (babylonAnimation.property == "position")
{
outputValues[2] *= -1;
}
else if (babylonAnimation.property == "rotationQuaternion")
{
outputValues[0] *= -1;
outputValues[1] *= -1;
}
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = numKeys;
if (accessorOutput.count == 0)
{
logger.RaiseWarning(String.Format("GLTFExporter.Animation | No frames to export in node animation \"{1}\" of node named \"{0}\". This will cause an error in the output gltf.", babylonNode.name, babylonAnimation.name));
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
ExportGLTFExtension(babylonNode, ref gltfAnimation, gltf);
}
private static float FPS_FACTOR = 30.0f; // TODO - Which FPS factor ?
private GLTFAnimation ExportNodeAnimation(BabylonNode babylonNode, GLTF gltf, GLTFNode gltfNode, BabylonScene babylonScene = null)
{
GLTFAnimation gltfAnimation = null;
if (gltf.AnimationsList.Count > 0)
{
gltfAnimation = gltf.AnimationsList[0];
}
else
{
gltfAnimation = new GLTFAnimation();
gltf.AnimationsList.Add(gltfAnimation);
}
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if ((babylonNode.animations != null && babylonNode.animations.Length > 0) ||
(babylonNode.extraAnimations != null && babylonNode.extraAnimations.Count > 0))
{
RaiseMessage("GLTFExporter.Animation | Export animation of node named: " + babylonNode.name, 2);
// Combine babylon animations from .babylon file and cached ones
var babylonAnimations = new List <BabylonAnimation>();
if (babylonNode.animations != null)
{
babylonAnimations.AddRange(babylonNode.animations);
}
if (babylonNode.extraAnimations != null)
{
babylonAnimations.AddRange(babylonNode.extraAnimations);
}
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
if (gltfTarget.path == null)
{
// Unkown babylon animation property
//RaiseWarning("GLTFExporter.Animation | Unkown animation property '" + babylonAnimation.property + "'", 3);
// Ignore this babylon animation
continue;
}
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation);
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
var outputValues = babylonAnimationKey.values;
// Switch coordinate system at object level
if (babylonAnimation.property == "position")
{
outputValues[2] *= -1;
}
else if (babylonAnimation.property == "rotationQuaternion")
{
outputValues[0] *= -1;
outputValues[1] *= -1;
}
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = babylonAnimation.keys.Length;
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList);
}
}
return(gltfAnimation);
}
private void ExportNodeAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonNode babylonNode, GLTFNode gltfNode, BabylonScene babylonScene)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if ((babylonNode.animations != null && babylonNode.animations.Length > 0) ||
(babylonNode.extraAnimations != null && babylonNode.extraAnimations.Count > 0))
{
RaiseMessage("GLTFExporter.Animation | Export animation of node named: " + babylonNode.name, 2);
// Combine babylon animations from .babylon file and cached ones
var babylonAnimations = new List <BabylonAnimation>();
if (babylonNode.animations != null)
{
babylonAnimations.AddRange(babylonNode.animations);
}
if (babylonNode.extraAnimations != null)
{
babylonAnimations.AddRange(babylonNode.extraAnimations);
}
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
if (gltfTarget.path == null)
{
// Unkown babylon animation property
//RaiseWarning("GLTFExporter.Animation | Unkown animation property '" + babylonAnimation.property + "'", 3);
// Ignore this babylon animation
continue;
}
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
continue;
}
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
int numKeys = 0;
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
if (babylonAnimationKey.frame < startFrame)
{
continue;
}
if (babylonAnimationKey.frame > endFrame)
{
continue;
}
numKeys++;
var outputValues = babylonAnimationKey.values;
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = numKeys;
// bail out if no keyframes to export (?)
// todo [KeyInterpolation]: bail out only when there are no keyframes at all (?) and otherwise add the appropriate (interpolated) keyframes
if (numKeys == 0)
{
continue;
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList, startFrame, endFrame);
}
}
}
private static float FPS_FACTOR = 30.0f; // TODO - Which FPS factor ?
private GLTFAnimation ExportNodeAnimation(BabylonNode babylonNode, GLTF gltf, GLTFNode gltfNode, BabylonScene babylonScene = null)
{
var channelList = new List <GLTFChannel>();
var samplerList = new List <GLTFAnimationSampler>();
if (babylonNode.animations != null && babylonNode.animations.Length > 0)
{
RaiseMessage("GLTFExporter.Animation | Export animation of node named: " + babylonNode.name, 2);
foreach (BabylonAnimation babylonAnimation in babylonNode.animations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
if (gltfTarget.path == null)
{
// Unkown babylon animation property
RaiseWarning("GLTFExporter.Animation | Unkown animation property '" + babylonAnimation.property + "'", 3);
// Ignore this babylon animation
continue;
}
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation);
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
var outputValues = babylonAnimationKey.values;
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = babylonAnimation.keys.Length;
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList);
}
}
// Do not export empty arrays
if (channelList.Count > 0)
{
// Animation
var gltfAnimation = new GLTFAnimation
{
channels = channelList.ToArray(),
samplers = samplerList.ToArray()
};
gltf.AnimationsList.Add(gltfAnimation);
return(gltfAnimation);
}
else
{
return(null);
}
}
private void ExportNodeAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonNode babylonNode, GLTFNode gltfNode, BabylonScene babylonScene)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
bool exportNonAnimated = Loader.Core.RootNode.GetBoolProperty("babylonjs_animgroup_exportnonanimated");
// Combine babylon animations from .babylon file and cached ones
var babylonAnimations = new List <BabylonAnimation>();
if (babylonNode.animations != null)
{
babylonAnimations.AddRange(babylonNode.animations);
}
if (babylonNode.extraAnimations != null)
{
babylonAnimations.AddRange(babylonNode.extraAnimations);
}
// Filter animations to only keep TRS ones
babylonAnimations = babylonAnimations.FindAll(babylonAnimation => _getTargetPath(babylonAnimation.property) != null);
if (babylonAnimations.Count > 0 || exportNonAnimated)
{
if (babylonAnimations.Count > 0)
{
RaiseMessage("GLTFExporter.Animation | Export animations of node named: " + babylonNode.name, 2);
}
else if (exportNonAnimated)
{
RaiseMessage("GLTFExporter.Animation | Export dummy animation for node named: " + babylonNode.name, 2);
// Export a dummy animation
babylonAnimations.Add(GetDummyAnimation(gltfNode, startFrame, endFrame));
}
foreach (BabylonAnimation babylonAnimation in babylonAnimations)
{
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = _getTargetPath(babylonAnimation.property);
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
continue;
}
// --- Output ---
GLTFAccessor accessorOutput = _createAccessorOfPath(gltfTarget.path, gltf);
// Populate accessor
int numKeys = 0;
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
if (babylonAnimationKey.frame < startFrame)
{
continue;
}
if (babylonAnimationKey.frame > endFrame)
{
continue;
}
numKeys++;
// copy data before changing it in case animation groups overlap
float[] outputValues = new float[babylonAnimationKey.values.Length];
babylonAnimationKey.values.CopyTo(outputValues, 0);
// Switch coordinate system at object level
if (babylonAnimation.property == "position")
{
outputValues[2] *= -1;
}
else if (babylonAnimation.property == "rotationQuaternion")
{
outputValues[0] *= -1;
outputValues[1] *= -1;
}
// Store values as bytes
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
}
;
accessorOutput.count = numKeys;
// bail out if no keyframes to export (?)
// todo [KeyInterpolation]: bail out only when there are no keyframes at all (?) and otherwise add the appropriate (interpolated) keyframes
if (numKeys == 0)
{
continue;
}
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
if (babylonNode.GetType() == typeof(BabylonMesh))
{
var babylonMesh = babylonNode as BabylonMesh;
// Morph targets
var babylonMorphTargetManager = GetBabylonMorphTargetManager(babylonScene, babylonMesh);
if (babylonMorphTargetManager != null)
{
ExportMorphTargetWeightAnimation(babylonMorphTargetManager, gltf, gltfNode, channelList, samplerList, startFrame, endFrame);
}
}
}
private void ExportBoneAnimation(GLTFAnimation gltfAnimation, int startFrame, int endFrame, GLTF gltf, BabylonBone babylonBone, GLTFNode gltfNode)
{
var channelList = gltfAnimation.ChannelList;
var samplerList = gltfAnimation.SamplerList;
if (babylonBone.animation != null && babylonBone.animation.property == "_matrix")
{
logger.RaiseMessage("GLTFExporter.Animation | Export animation of bone named: " + babylonBone.name, 2);
var babylonAnimation = babylonBone.animation;
// --- Input ---
var accessorInput = _createAndPopulateInput(gltf, babylonAnimation, startFrame, endFrame);
if (accessorInput == null)
{
return;
}
// --- Output ---
var paths = new string[] { "translation", "rotation", "scale" };
var accessorOutputByPath = new Dictionary <string, GLTFAccessor>();
foreach (string path in paths)
{
GLTFAccessor accessorOutput = _createAccessorOfPath(path, gltf);
accessorOutputByPath.Add(path, accessorOutput);
}
// Populate accessors
foreach (var babylonAnimationKey in babylonAnimation.keys)
{
if (babylonAnimationKey.frame < startFrame)
{
continue;
}
if (babylonAnimationKey.frame > endFrame)
{
continue;
}
var matrix = new BabylonMatrix();
matrix.m = babylonAnimationKey.values;
var translationBabylon = new BabylonVector3();
var rotationQuatBabylon = new BabylonQuaternion();
var scaleBabylon = new BabylonVector3();
matrix.decompose(scaleBabylon, rotationQuatBabylon, translationBabylon);
// Switch coordinate system at object level
translationBabylon.Z *= -1;
translationBabylon *= exportParameters.scaleFactor;
rotationQuatBabylon.X *= -1;
rotationQuatBabylon.Y *= -1;
var outputValuesByPath = new Dictionary <string, float[]>();
outputValuesByPath.Add("translation", translationBabylon.ToArray());
outputValuesByPath.Add("rotation", rotationQuatBabylon.ToArray());
outputValuesByPath.Add("scale", scaleBabylon.ToArray());
// Store values as bytes
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
var outputValues = outputValuesByPath[path];
foreach (var outputValue in outputValues)
{
accessorOutput.bytesList.AddRange(BitConverter.GetBytes(outputValue));
}
accessorOutput.count++;
}
}
;
foreach (string path in paths)
{
var accessorOutput = accessorOutputByPath[path];
// Animation sampler
var gltfAnimationSampler = new GLTFAnimationSampler
{
input = accessorInput.index,
output = accessorOutput.index
};
gltfAnimationSampler.index = samplerList.Count;
samplerList.Add(gltfAnimationSampler);
// Target
var gltfTarget = new GLTFChannelTarget
{
node = gltfNode.index
};
gltfTarget.path = path;
// Channel
var gltfChannel = new GLTFChannel
{
sampler = gltfAnimationSampler.index,
target = gltfTarget
};
channelList.Add(gltfChannel);
}
}
}
