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 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);
}
}
}
