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);
}
/// <summary>
/// Get TRS and visiblity animations of the transform
/// </summary>
/// <param name="transform">Transform above mesh/camera/light</param>
/// <returns></returns>
private List <BabylonAnimation> GetAnimation(MFnTransform transform)
{
// Animations
MPlugArray connections = new MPlugArray();
MStringArray animCurvList = new MStringArray();
MIntArray keysTime = new MIntArray();
MDoubleArray keysValue = new MDoubleArray();
MFloatArray translateValues = new MFloatArray();
MFloatArray rotateValues = new MFloatArray();
MFloatArray scaleValues = new MFloatArray();
MFloatArray visibilityValues = new MFloatArray();
MFloatArray keyTimes = new MFloatArray();
List <BabylonAnimationKey> keys = new List <BabylonAnimationKey>();
List <BabylonAnimation> animationsObject = new List <BabylonAnimation>();
//Get the animCurve
MGlobal.executeCommand("listConnections -type \"animCurve\" " + transform.fullPathName + ";", animCurvList);
List <AnimCurvData> animCurvesData = new List <AnimCurvData>();
foreach (String animCurv in animCurvList)
{
AnimCurvData animCurvData = new AnimCurvData();
animCurvesData.Add(animCurvData);
animCurvData.animCurv = animCurv;
//Get the key time for each curves
MGlobal.executeCommand("keyframe -q " + animCurv + ";", keysTime);
//Get the value for each curves
MGlobal.executeCommand("keyframe - q -vc -absolute " + animCurv + ";", keysValue);
if (animCurv.EndsWith("translateZ") || animCurv.EndsWith("rotateX") || animCurv.EndsWith("rotateY"))
{
for (int index = 0; index < keysTime.Count; index++)
{
// Switch coordinate system at object level
animCurvData.valuePerFrame.Add(keysTime[index], (float)keysValue[index] * -1.0f);
}
}
else
{
for (int index = 0; index < keysTime.Count; index++)
{
animCurvData.valuePerFrame.Add(keysTime[index], (float)keysValue[index]);
}
}
}
string[] mayaAnimationProperties = new string[] { "translate", "rotate", "scale" };
string[] babylonAnimationProperties = new string[] { "position", "rotationQuaternion", "scaling" };
string[] axis = new string[] { "X", "Y", "Z" };
// Init TRS default values
Dictionary <string, float> defaultValues = new Dictionary <string, float>();
float[] position = null;
float[] rotationQuaternion = null;
float[] rotation = null;
float[] scaling = null;
GetTransform(transform, ref position, ref rotationQuaternion, ref rotation, ref scaling); // coordinate system already switched
defaultValues.Add("translateX", position[0]);
defaultValues.Add("translateY", position[1]);
defaultValues.Add("translateZ", position[2]);
defaultValues.Add("rotateX", rotation[0]);
defaultValues.Add("rotateY", rotation[1]);
defaultValues.Add("rotateZ", rotation[2]);
defaultValues.Add("scaleX", scaling[0]);
defaultValues.Add("scaleY", scaling[1]);
defaultValues.Add("scaleZ", scaling[2]);
for (int indexAnimationProperty = 0; indexAnimationProperty < mayaAnimationProperties.Length; indexAnimationProperty++)
{
string mayaAnimationProperty = mayaAnimationProperties[indexAnimationProperty];
// Retreive animation curves data for current animation property
// Ex: all "translate" data are "translateX", "translateY", "translateZ"
List <AnimCurvData> animDataProperty = animCurvesData.Where(data => data.animCurv.Contains(mayaAnimationProperty)).ToList();
if (animDataProperty.Count == 0)
{
// Property is not animated
continue;
}
// Get all frames for this property
List <int> framesProperty = new List <int>();
foreach (var animData in animDataProperty)
{
framesProperty.AddRange(animData.valuePerFrame.Keys);
}
framesProperty = framesProperty.Distinct().ToList();
framesProperty.Sort();
// Get default values for this property
BabylonAnimationKey lastBabylonAnimationKey = new BabylonAnimationKey();
lastBabylonAnimationKey.frame = 0;
lastBabylonAnimationKey.values = new float[] { defaultValues[mayaAnimationProperty + "X"], defaultValues[mayaAnimationProperty + "Y"], defaultValues[mayaAnimationProperty + "Z"] };
// Compute all values for this property
List <BabylonAnimationKey> babylonAnimationKeys = new List <BabylonAnimationKey>();
foreach (var frameProperty in framesProperty)
{
BabylonAnimationKey babylonAnimationKey = new BabylonAnimationKey();
babylonAnimationKeys.Add(babylonAnimationKey);
// Frame
babylonAnimationKey.frame = frameProperty;
// Values
float[] valuesProperty = new float[3];
for (int indexAxis = 0; indexAxis < axis.Length; indexAxis++)
{
AnimCurvData animCurvDataAxis = animDataProperty.Find(data => data.animCurv.EndsWith(axis[indexAxis]));
float value;
if (animCurvDataAxis != null && animCurvDataAxis.valuePerFrame.ContainsKey(frameProperty))
{
value = animCurvDataAxis.valuePerFrame[frameProperty];
}
else
{
value = lastBabylonAnimationKey.values[indexAxis];
}
valuesProperty[indexAxis] = value;
}
babylonAnimationKey.values = valuesProperty.ToArray();
// Update last known values
lastBabylonAnimationKey = babylonAnimationKey;
}
// Optimization
OptimizeAnimations(babylonAnimationKeys, true);
// Convert euler to quaternion angles
if (indexAnimationProperty == 1) // Rotation
{
foreach (var babylonAnimationKey in babylonAnimationKeys)
{
BabylonVector3 eulerAngles = BabylonVector3.FromArray(babylonAnimationKey.values);
BabylonQuaternion quaternionAngles = eulerAngles.toQuaternion();
babylonAnimationKey.values = quaternionAngles.ToArray();
}
}
// Ensure animation has at least 2 frames
if (babylonAnimationKeys.Count > 1)
{
var animationPresent = true;
// Ensure animation has at least 2 non equal frames
if (babylonAnimationKeys.Count == 2)
{
if (babylonAnimationKeys[0].values.IsEqualTo(babylonAnimationKeys[1].values))
{
animationPresent = false;
}
}
if (animationPresent)
{
// Create BabylonAnimation
string babylonAnimationProperty = babylonAnimationProperties[indexAnimationProperty];
animationsObject.Add(new BabylonAnimation()
{
dataType = indexAnimationProperty == 1 ? (int)BabylonAnimation.DataType.Quaternion : (int)BabylonAnimation.DataType.Vector3,
name = babylonAnimationProperty + " animation",
framePerSecond = 30,
loopBehavior = (int)BabylonAnimation.LoopBehavior.Cycle,
property = babylonAnimationProperty,
keys = babylonAnimationKeys.ToArray()
});
}
}
}
return(animationsObject);
}
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);
}
}
}
private GLTFNode _exportBone(BabylonBone babylonBone, GLTF gltf, BabylonSkeleton babylonSkeleton, List <BabylonBone> bones)
{
var nodeNodePair = nodeToGltfNodeMap.FirstOrDefault(pair => pair.Key.id.Equals(babylonBone.id));
if (nodeNodePair.Key != null)
{
return(nodeNodePair.Value);
}
var boneNodePair = boneToGltfNodeMap.FirstOrDefault(pair => pair.Key.id.Equals(babylonBone.id));
if (boneNodePair.Key != null)
{
return(boneNodePair.Value);
}
// Node
var gltfNode = new GLTFNode
{
name = babylonBone.name,
index = gltf.NodesList.Count
};
gltf.NodesList.Add(gltfNode);
boneToGltfNodeMap.Add(babylonBone, gltfNode);
// Hierarchy
if (babylonBone.parentBoneIndex >= 0)
{
var babylonParentBone = bones.Find(_babylonBone => _babylonBone.index == babylonBone.parentBoneIndex);
var gltfParentNode = _exportBone(babylonParentBone, gltf, babylonSkeleton, bones);
RaiseMessage("GLTFExporter.Skin | Add " + babylonBone.name + " as child to " + gltfParentNode.name, 3);
gltfParentNode.ChildrenList.Add(gltfNode.index);
gltfNode.parent = gltfParentNode;
}
else
{
// It's a root node
// Only root nodes are listed in a gltf scene
RaiseMessage("GLTFExporter.Skin | Add " + babylonBone.name + " as root node to scene", 3);
gltf.scenes[0].NodesList.Add(gltfNode.index);
}
// Transform
// Bones transform are exported through translation/rotation/scale (TRS) rather than matrix
// Because gltf node animation can only target TRS properties, not the matrix one
// Create matrix from array
var babylonMatrix = new BabylonMatrix();
babylonMatrix.m = babylonBone.matrix;
// Decompose matrix into TRS
var translationBabylon = new BabylonVector3();
var rotationQuatBabylon = new BabylonQuaternion();
var scaleBabylon = new BabylonVector3();
babylonMatrix.decompose(scaleBabylon, rotationQuatBabylon, translationBabylon);
// Store TRS values
gltfNode.translation = translationBabylon.ToArray();
gltfNode.rotation = rotationQuatBabylon.ToArray();
gltfNode.scale = scaleBabylon.ToArray();
// Animations
//ExportBoneAnimation(babylonBone, gltf, gltfNode);
return(gltfNode);
}
private BabylonCamera ExportCamera(IIGameScene scene, IIGameNode cameraNode, BabylonScene babylonScene)
{
if (IsCameraExportable(cameraNode) == false)
{
return(null);
}
var gameCamera = cameraNode.IGameObject.AsGameCamera();
var maxCamera = gameCamera.MaxObject as ICameraObject;
var initialized = gameCamera.InitializeData;
var babylonCamera = new BabylonCamera();
RaiseMessage(cameraNode.Name, 1);
babylonCamera.name = cameraNode.Name;
babylonCamera.id = cameraNode.MaxNode.GetGuid().ToString();
if (cameraNode.NodeParent != null)
{
babylonCamera.parentId = cameraNode.NodeParent.MaxNode.GetGuid().ToString();
}
babylonCamera.fov = Tools.ConvertFov(maxCamera.GetFOV(0, Tools.Forever));
if (maxCamera.ManualClip == 1)
{
babylonCamera.minZ = maxCamera.GetClipDist(0, 1, Tools.Forever);
babylonCamera.maxZ = maxCamera.GetClipDist(0, 2, Tools.Forever);
}
else
{
babylonCamera.minZ = 0.1f;
babylonCamera.maxZ = 10000.0f;
}
if (babylonCamera.minZ == 0.0f)
{
babylonCamera.minZ = 0.1f;
}
// Type
babylonCamera.type = cameraNode.MaxNode.GetStringProperty("babylonjs_type", "FreeCamera");
// Control
babylonCamera.speed = cameraNode.MaxNode.GetFloatProperty("babylonjs_speed", 1.0f);
babylonCamera.inertia = cameraNode.MaxNode.GetFloatProperty("babylonjs_inertia", 0.9f);
// Collisions
babylonCamera.checkCollisions = cameraNode.MaxNode.GetBoolProperty("babylonjs_checkcollisions");
babylonCamera.applyGravity = cameraNode.MaxNode.GetBoolProperty("babylonjs_applygravity");
babylonCamera.ellipsoid = cameraNode.MaxNode.GetVector3Property("babylonjs_ellipsoid");
// Position / rotation
var localTM = cameraNode.GetObjectTM(0);
if (cameraNode.NodeParent != null)
{
var parentWorld = cameraNode.NodeParent.GetObjectTM(0);
localTM.MultiplyBy(parentWorld.Inverse);
}
var position = localTM.Translation;
var rotation = localTM.Rotation;
babylonCamera.position = new[] { position.X, position.Y, position.Z };
var rotationQuaternion = new BabylonQuaternion {
X = rotation.X, Y = rotation.Y, Z = rotation.Z, W = -rotation.W
};
if (ExportQuaternionsInsteadOfEulers)
{
babylonCamera.rotationQuaternion = rotationQuaternion.ToArray();
}
else
{
babylonCamera.rotation = rotationQuaternion.toEulerAngles().ToArray();
}
// Target
var target = gameCamera.CameraTarget;
if (target != null)
{
babylonCamera.lockedTargetId = target.MaxNode.GetGuid().ToString();
}
else
{
var dir = localTM.GetRow(3);
babylonCamera.target = new [] { position.X - dir.X, position.Y - dir.Y, position.Z - dir.Z };
}
// Animations
var animations = new List <BabylonAnimation>();
ExportVector3Animation("position", animations, key =>
{
var tm = cameraNode.GetLocalTM(key);
if (cameraNode.NodeParent != null)
{
var parentWorld = cameraNode.NodeParent.GetObjectTM(key);
tm.MultiplyBy(parentWorld.Inverse);
}
var translation = tm.Translation;
return(new [] { translation.X, translation.Y, translation.Z });
});
if (gameCamera.CameraTarget == null)
{
ExportVector3Animation("target", animations, key =>
{
var tm = cameraNode.GetLocalTM(key);
if (cameraNode.NodeParent != null)
{
var parentWorld = cameraNode.NodeParent.GetObjectTM(key);
tm.MultiplyBy(parentWorld.Inverse);
}
var translation = tm.Translation;
var dir = tm.GetRow(3);
return(new float[] { translation.X - dir.X, translation.Y - dir.Y, translation.Z - dir.Z });
});
}
ExportFloatAnimation("fov", animations, key => new[] { Tools.ConvertFov((gameCamera.MaxObject as ICameraObject).GetFOV(key, Tools.Forever)) });
babylonCamera.animations = animations.ToArray();
if (cameraNode.MaxNode.GetBoolProperty("babylonjs_autoanimate"))
{
babylonCamera.autoAnimate = true;
babylonCamera.autoAnimateFrom = (int)cameraNode.MaxNode.GetFloatProperty("babylonjs_autoanimate_from");
babylonCamera.autoAnimateTo = (int)cameraNode.MaxNode.GetFloatProperty("babylonjs_autoanimate_to");
babylonCamera.autoAnimateLoop = cameraNode.MaxNode.GetBoolProperty("babylonjs_autoanimateloop");
}
babylonScene.CamerasList.Add(babylonCamera);
return(babylonCamera);
}
/// <summary>
/// In 3DS Max default element can look in different direction than the same default element in Babylon or in glTF.
/// This function correct the node rotation.
/// </summary>
/// <param name="node"></param>
/// <param name="babylonScene"></param>
/// <param name="angle"></param>
private void FixNodeRotation(ref BabylonNode node, ref BabylonScene babylonScene, double angle)
{
string id = node.id;
IList <BabylonMesh> meshes = babylonScene.MeshesList.FindAll(mesh => mesh.parentId == null ? false : mesh.parentId.Equals(id));
RaiseMessage($"{node.name}", 2);
// fix the vue
// Rotation around the axis X of PI / 2 in the indirect direction for camera
// double angle = Math.PI / 2; // for camera
// double angle = -Math.PI / 2; // for light
if (node.rotation != null)
{
node.rotation[0] += (float)angle;
}
if (node.rotationQuaternion != null)
{
BabylonQuaternion rotationQuaternion = FixCameraQuaternion(node, angle);
node.rotationQuaternion = rotationQuaternion.ToArray();
node.rotation = rotationQuaternion.toEulerAngles().ToArray();
}
// animation
List <BabylonAnimation> animations = new List <BabylonAnimation>(node.animations);
BabylonAnimation animationRotationQuaternion = animations.Find(animation => animation.property.Equals("rotationQuaternion"));
if (animationRotationQuaternion != null)
{
foreach (BabylonAnimationKey key in animationRotationQuaternion.keys)
{
key.values = FixCameraQuaternion(key.values, angle);
}
}
else // if the camera has a lockedTargetId, it is the extraAnimations that stores the rotation animation
{
if (node.extraAnimations != null)
{
List <BabylonAnimation> extraAnimations = new List <BabylonAnimation>(node.extraAnimations);
animationRotationQuaternion = extraAnimations.Find(animation => animation.property.Equals("rotationQuaternion"));
if (animationRotationQuaternion != null)
{
foreach (BabylonAnimationKey key in animationRotationQuaternion.keys)
{
key.values = FixCameraQuaternion(key.values, angle);
}
}
}
}
// fix direct children
// Rotation around the axis X of -PI / 2 in the direct direction for camera children
angle = -angle;
foreach (var mesh in meshes)
{
RaiseVerbose($"{mesh.name}", 3);
mesh.position = new float[] { mesh.position[0], mesh.position[2], -mesh.position[1] };
// Add a rotation of PI/2 axis X in direct direction
if (mesh.rotationQuaternion != null)
{
// Rotation around the axis X of -PI / 2 in the direct direction
BabylonQuaternion quaternion = FixChildQuaternion(mesh, angle);
mesh.rotationQuaternion = quaternion.ToArray();
}
if (mesh.rotation != null)
{
mesh.rotation[0] += (float)angle;
}
// Animations
animations = new List <BabylonAnimation>(mesh.animations);
// Position
BabylonAnimation animationPosition = animations.Find(animation => animation.property.Equals("position"));
if (animationPosition != null)
{
foreach (BabylonAnimationKey key in animationPosition.keys)
{
key.values = new float[] { key.values[0], key.values[2], -key.values[1] };
}
}
// Rotation
animationRotationQuaternion = animations.Find(animation => animation.property.Equals("rotationQuaternion"));
if (animationRotationQuaternion != null)
{
foreach (BabylonAnimationKey key in animationRotationQuaternion.keys)
{
key.values = FixChildQuaternion(key.values, angle);
}
}
}
}
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
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;
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);
}
}
}
