public override void Write()
{
Indent(); jsonWriter.Write("{\n");
IndentIn();
Indent(); jsonWriter.Write("\"inverseBindMatrices\": " + invBindMatricesAccessorIndex + ",\n");
Indent(); jsonWriter.Write("\"joints\": [\n");
IndentIn();
foreach (Transform j in joints)
{
CommaNL();
Indent(); jsonWriter.Write("" + GlTF_Writer.nodeIDs.IndexOf(GlTF_Node.GetIDFromObject(j)));
}
IndentOut();
jsonWriter.WriteLine();
Indent(); jsonWriter.Write("],\n");
Indent(); jsonWriter.Write("\"name\": \"" + name + "\"\n");
IndentOut();
Indent(); jsonWriter.Write("}");
}
public void Populate(AnimationClip clip, Transform tr, bool bake = true)
{
// 1. browse clip, collect all curves and create a TargetCurveSet for each target
Dictionary <string, TargetCurveSet> targetCurvesBinding = new Dictionary <string, TargetCurveSet>();
collectClipCurves(clip, ref targetCurvesBinding);
// Baking needs all properties, fill missing curves with transform data in 2 keyframes (start, endTime)
// where endTime is clip duration
generateMissingCurves(clip.length, ref tr, ref targetCurvesBinding);
if (bake)
{
// Bake animation for all animated nodes
foreach (string target in targetCurvesBinding.Keys)
{
Transform targetTr = target.Length > 0 ? tr.Find(target) : tr;
if (targetTr == null)
{
continue;
}
Transform targetObject = targetTr;
string targetId = GlTF_Node.GetNameFromObject(targetObject);
int targetUUID = GlTF_Node.GetIDFromObject(targetObject);
// Initialize accessors for current animation
GlTF_Accessor timeAccessor = new GlTF_Accessor(targetId + "_TimeAccessor_" + clip.name, GlTF_Accessor.Type.SCALAR, GlTF_Accessor.ComponentType.FLOAT);
timeAccessor.bufferView = GlTF_Writer.floatBufferView;
int timeAccessorIndex = GlTF_Writer.accessors.Count;
GlTF_Writer.accessors.Add(timeAccessor);
// Translation
GlTF_Channel chTranslation = new GlTF_Channel("translation", animSamplers.Count);
GlTF_Target targetTranslation = new GlTF_Target();
targetTranslation.id = targetId;
targetTranslation.uuid = targetUUID;
targetTranslation.path = "translation";
chTranslation.target = targetTranslation;
channels.Add(chTranslation);
GlTF_AnimSampler sTranslation = new GlTF_AnimSampler(timeAccessorIndex, GlTF_Writer.accessors.Count);
GlTF_Accessor translationAccessor = new GlTF_Accessor(targetId + "_TranslationAccessor_" + clip.name, GlTF_Accessor.Type.VEC3, GlTF_Accessor.ComponentType.FLOAT);
translationAccessor.bufferView = GlTF_Writer.vec3BufferViewAnim;
GlTF_Writer.accessors.Add(translationAccessor);
animSamplers.Add(sTranslation);
// Rotation
GlTF_Channel chRotation = new GlTF_Channel("rotation", animSamplers.Count);
GlTF_Target targetRotation = new GlTF_Target();
targetRotation.id = GlTF_Node.GetNameFromObject(targetObject);
targetRotation.uuid = targetUUID;
targetRotation.path = "rotation";
chRotation.target = targetRotation;
channels.Add(chRotation);
GlTF_AnimSampler sRotation = new GlTF_AnimSampler(timeAccessorIndex, GlTF_Writer.accessors.Count);
GlTF_Accessor rotationAccessor = new GlTF_Accessor(targetId + "_RotationAccessor_" + clip.name, GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
rotationAccessor.bufferView = GlTF_Writer.vec4BufferViewAnim;
GlTF_Writer.accessors.Add(rotationAccessor);
animSamplers.Add(sRotation);
// Scale
GlTF_Channel chScale = new GlTF_Channel("scale", animSamplers.Count);
GlTF_Target targetScale = new GlTF_Target();
targetScale.id = GlTF_Node.GetNameFromObject(targetObject);
targetScale.uuid = targetUUID;
targetScale.path = "scale";
chScale.target = targetScale;
channels.Add(chScale);
GlTF_AnimSampler sScale = new GlTF_AnimSampler(timeAccessorIndex, GlTF_Writer.accessors.Count);
GlTF_Accessor scaleAccessor = new GlTF_Accessor(targetId + "_ScaleAccessor_" + clip.name, GlTF_Accessor.Type.VEC3, GlTF_Accessor.ComponentType.FLOAT);
scaleAccessor.bufferView = GlTF_Writer.vec3BufferViewAnim;
GlTF_Writer.accessors.Add(scaleAccessor);
animSamplers.Add(sScale);
// Bake and populate animation data
float[] times = null;
Vector3[] positions = null;
Vector3[] scales = null;
Vector4[] rotations = null;
bakeCurveSet(targetCurvesBinding[target], clip.length, bakingFramerate, ref times, ref positions, ref rotations, ref scales);
// Populate accessors
timeAccessor.Populate(times);
translationAccessor.Populate(positions);
rotationAccessor.Populate(rotations, false);
scaleAccessor.Populate(scales, true);
}
}
else
{
Debug.LogError("Only baked animation is supported for now. Skipping animation");
}
}
public IEnumerator Export(string path, Preset presetAsset, bool buildZip, bool exportPBRMaterials, bool exportAnimation = true, bool doConvertImages = false)
{
writer = new GlTF_Writer();
writer.Init();
done = false;
bool debugRightHandedScale = false;
GlTF_Writer.exportedFiles.Clear();
if (debugRightHandedScale)
{
GlTF_Writer.convertRightHanded = false;
}
writer.extraString.Add("exporterVersion", GlTF_Writer.exporterVersion);
Transform[] transforms0 = Selection.GetTransforms(SelectionMode.TopLevel);
//// Create rootNode
//GlTF_Node correctionNode = new GlTF_Node();
//correctionNode.id = GetInstanceID(transforms0[0]);
//correctionNode.name = transforms0[0].name;
//GlTF_Writer.nodes.Add(correctionNode);
//GlTF_Writer.nodeIDs.Add(correctionNode.id);
//GlTF_Writer.nodeNames.Add(correctionNode.name);
//GlTF_Writer.rootNodes.Add(correctionNode);
//path = toGlTFname(path);
savedPath = Path.GetDirectoryName(path);
// Temp list to keep track of skeletons
Dictionary <string, GlTF_Skin> parsedSkins = new Dictionary <string, GlTF_Skin>();
parsedSkins.Clear();
// first, collect objects in the scene, add to lists
Transform[] transforms = Selection.GetTransforms(SelectionMode.Deep);
List <Transform> trs = new List <Transform>(transforms);
// Prefilter selected nodes and look for skinning in order to list "bones" nodes
//FIXME: improve this
List <Transform> bones = new List <Transform>();
foreach (Transform tr in trs)
{
if (!tr.gameObject.activeSelf)
{
continue;
}
SkinnedMeshRenderer skin = tr.GetComponent <SkinnedMeshRenderer>();
if (skin)
{
foreach (Transform bone in skin.bones)
{
bones.Add(bone);
}
}
}
nbSelectedObjects = trs.Count;
int nbDisabledObjects = 0;
int nbIndex = 1;
foreach (Transform tr in trs)
{
if (tr.gameObject.activeInHierarchy == false)
{
nbDisabledObjects++;
continue;
}
// Initialize the node
GlTF_Node node = new GlTF_Node();
node.id = GetInstanceID(tr);//GlTF_Node.GetNameFromObject(tr);
node.name = GlTF_Writer.cleanNonAlphanumeric(tr.name);
if (tr.GetComponent <Camera>() != null)
{
parseUnityCamera(tr);
}
if (tr.GetComponent <Light>() != null)
{
parseUnityLight(tr);
}
Mesh m = GetMesh(tr);
if (m != null)
{
GlTF_Mesh mesh = new GlTF_Mesh();
mesh.id = GetInstanceID(m);
mesh.name = GlTF_Writer.cleanNonAlphanumeric(GlTF_Mesh.GetNameFromObject(m));
GlTF_Accessor positionAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "position"), GlTF_Accessor.Type.VEC3, GlTF_Accessor.ComponentType.FLOAT);
positionAccessor.bufferView = GlTF_Writer.vec3BufferView;
GlTF_Writer.accessors.Add(positionAccessor);
GlTF_Accessor normalAccessor = null;
if (m.normals.Length > 0)
{
normalAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "normal"), GlTF_Accessor.Type.VEC3, GlTF_Accessor.ComponentType.FLOAT);
normalAccessor.bufferView = GlTF_Writer.vec3BufferView;
GlTF_Writer.accessors.Add(normalAccessor);
}
GlTF_Accessor colorAccessor = null;
if (m.colors.Length > 0)
{
colorAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "color"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
colorAccessor.bufferView = GlTF_Writer.vec4BufferView;
GlTF_Writer.accessors.Add(colorAccessor);
}
GlTF_Accessor uv0Accessor = null;
if (m.uv.Length > 0)
{
uv0Accessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "uv0"), GlTF_Accessor.Type.VEC2, GlTF_Accessor.ComponentType.FLOAT);
uv0Accessor.bufferView = GlTF_Writer.vec2BufferView;
GlTF_Writer.accessors.Add(uv0Accessor);
}
GlTF_Accessor uv1Accessor = null;
if (m.uv2.Length > 0)
{
// check if object is affected by a lightmap
uv1Accessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "uv1"), GlTF_Accessor.Type.VEC2, GlTF_Accessor.ComponentType.FLOAT);
uv1Accessor.bufferView = GlTF_Writer.vec2BufferView;
GlTF_Writer.accessors.Add(uv1Accessor);
}
GlTF_Accessor uv2Accessor = null;
if (m.uv3.Length > 0)
{
uv2Accessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "uv2"), GlTF_Accessor.Type.VEC2, GlTF_Accessor.ComponentType.FLOAT);
uv2Accessor.bufferView = GlTF_Writer.vec2BufferView;
GlTF_Writer.accessors.Add(uv2Accessor);
}
GlTF_Accessor uv3Accessor = null;
if (m.uv4.Length > 0)
{
uv3Accessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "uv3"), GlTF_Accessor.Type.VEC2, GlTF_Accessor.ComponentType.FLOAT);
uv3Accessor.bufferView = GlTF_Writer.vec2BufferView;
GlTF_Writer.accessors.Add(uv3Accessor);
}
GlTF_Accessor jointAccessor = null;
if (exportAnimation && m.boneWeights.Length > 0)
{
jointAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "joints"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.USHORT);
jointAccessor.bufferView = GlTF_Writer.vec4UshortBufferView;
GlTF_Writer.accessors.Add(jointAccessor);
}
GlTF_Accessor weightAccessor = null;
if (exportAnimation && m.boneWeights.Length > 0)
{
weightAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "weights"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
weightAccessor.bufferView = GlTF_Writer.vec4BufferView;
GlTF_Writer.accessors.Add(weightAccessor);
}
GlTF_Accessor tangentAccessor = null;
if (m.tangents.Length > 0)
{
tangentAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "tangents"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
tangentAccessor.bufferView = GlTF_Writer.vec4BufferView;
GlTF_Writer.accessors.Add(tangentAccessor);
}
var smCount = m.subMeshCount;
for (var i = 0; i < smCount; ++i)
{
GlTF_Primitive primitive = new GlTF_Primitive();
primitive.name = GlTF_Primitive.GetNameFromObject(m, i);
primitive.index = i;
GlTF_Attributes attributes = new GlTF_Attributes();
attributes.positionAccessor = positionAccessor;
attributes.normalAccessor = normalAccessor;
attributes.colorAccessor = colorAccessor;
attributes.texCoord0Accessor = uv0Accessor;
attributes.texCoord1Accessor = uv1Accessor;
attributes.texCoord2Accessor = uv2Accessor;
attributes.texCoord3Accessor = uv3Accessor;
attributes.jointAccessor = jointAccessor;
attributes.weightAccessor = weightAccessor;
attributes.tangentAccessor = tangentAccessor;
primitive.attributes = attributes;
GlTF_Accessor indexAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "indices_" + i), GlTF_Accessor.Type.SCALAR, GlTF_Accessor.ComponentType.USHORT);
indexAccessor.bufferView = GlTF_Writer.ushortBufferView;
GlTF_Writer.accessors.Add(indexAccessor);
primitive.indices = indexAccessor;
var mr = GetRenderer(tr);
var sm = mr.sharedMaterials;
if (i < sm.Length)
{
var mat = sm[i];
var matName = GlTF_Material.GetNameFromObject(mat);
if (GlTF_Writer.materialNames.Contains(matName))
{
primitive.materialIndex = GlTF_Writer.materialNames.IndexOf(matName); // THIS INDIRECTION CAN BE REMOVED!
}
else
{
GlTF_Material material = new GlTF_Material();
material.name = GlTF_Writer.cleanNonAlphanumeric(mat.name);
primitive.materialIndex = GlTF_Writer.materials.Count;
GlTF_Writer.materialNames.Add(matName);
GlTF_Writer.materials.Add(material);
//technique
var s = mat.shader;
var techName = GlTF_Technique.GetNameFromObject(s);
if (GlTF_Writer.techniqueNames.Contains(techName))
{
material.instanceTechniqueIndex = GlTF_Writer.techniqueNames.IndexOf(techName); // THIS INDIRECTION CAN BE REMOVED!
}
else
{
GlTF_Technique tech = new GlTF_Technique();
tech.name = techName;
GlTF_Technique.Parameter tParam = new GlTF_Technique.Parameter();
tParam.name = "position";
tParam.type = GlTF_Technique.Type.FLOAT_VEC3;
tParam.semantic = GlTF_Technique.Semantic.POSITION;
tech.parameters.Add(tParam);
GlTF_Technique.Attribute tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_position";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
if (normalAccessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "normal";
tParam.type = GlTF_Technique.Type.FLOAT_VEC3;
tParam.semantic = GlTF_Technique.Semantic.NORMAL;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_normal";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
if (uv0Accessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "texcoord0";
tParam.type = GlTF_Technique.Type.FLOAT_VEC2;
tParam.semantic = GlTF_Technique.Semantic.TEXCOORD_0;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_texcoord0";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
if (uv1Accessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "texcoord1";
tParam.type = GlTF_Technique.Type.FLOAT_VEC2;
tParam.semantic = GlTF_Technique.Semantic.TEXCOORD_1;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_texcoord1";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
if (uv2Accessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "texcoord2";
tParam.type = GlTF_Technique.Type.FLOAT_VEC2;
tParam.semantic = GlTF_Technique.Semantic.TEXCOORD_2;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_texcoord2";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
if (uv3Accessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "texcoord3";
tParam.type = GlTF_Technique.Type.FLOAT_VEC2;
tParam.semantic = GlTF_Technique.Semantic.TEXCOORD_3;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_texcoord3";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
tech.AddDefaultUniforms();
// Populate technique with shader data
GlTF_Writer.techniqueNames.Add(techName);
GlTF_Writer.techniques.Add(tech);
// create program
GlTF_Program program = new GlTF_Program();
program.name = GlTF_Program.GetNameFromObject(s);
tech.program = program.name;
foreach (var attr in tech.attributes)
{
program.attributes.Add(attr.name);
}
GlTF_Writer.programs.Add(program);
}
unityToPBRMaterial(mat, ref material);
}
}
mesh.primitives.Add(primitive);
}
// If gameobject having SkinnedMeshRenderer component has been transformed,
// the mesh would need to be baked here.
mesh.Populate(m);
GlTF_Writer.meshes.Add(mesh);
node.meshIndex = GlTF_Writer.meshes.IndexOf(mesh);
}
// Parse animations
if (exportAnimation)
{
Animator a = tr.GetComponent <Animator>();
if (a != null)
{
AnimationClip[] clips = AnimationUtility.GetAnimationClips(tr.gameObject);
for (int i = 0; i < clips.Length; i++)
{
//FIXME It seems not good to generate one animation per animator.
GlTF_Animation anim = new GlTF_Animation(GlTF_Writer.cleanNonAlphanumeric(clips[i].name));
anim.Populate(clips[i], tr, GlTF_Writer.bakeAnimation);
if (anim.channels.Count > 0)
{
GlTF_Writer.animations.Add(anim);
}
}
}
Animation animation = tr.GetComponent <Animation>();
if (animation != null)
{
AnimationClip clip = animation.clip;
//FIXME It seems not good to generate one animation per animator.
GlTF_Animation anim = new GlTF_Animation(GlTF_Writer.cleanNonAlphanumeric(clip.name));
anim.Populate(clip, tr, GlTF_Writer.bakeAnimation);
if (anim.channels.Count > 0)
{
GlTF_Writer.animations.Add(anim);
}
}
}
// Parse transform
if (tr.parent == null)
{
Matrix4x4 mat = Matrix4x4.identity;
if (debugRightHandedScale)
{
mat.m22 = -1;
}
mat = mat * Matrix4x4.TRS(tr.localPosition, tr.localRotation, tr.localScale);
node.matrix = new GlTF_Matrix(mat);
}
// Use good transform if parent object is not in selection
else if (!trs.Contains(tr.parent))
{
node.hasParent = false;
Matrix4x4 mat = Matrix4x4.identity;
if (debugRightHandedScale)
{
mat.m22 = -1;
}
mat = mat * tr.localToWorldMatrix;
node.matrix = new GlTF_Matrix(mat);
}
else
{
node.hasParent = true;
if (tr.localPosition != Vector3.zero)
{
node.translation = new GlTF_Translation(tr.localPosition);
}
if (tr.localScale != Vector3.one)
{
node.scale = new GlTF_Scale(tr.localScale);
}
if (tr.localRotation != Quaternion.identity)
{
node.rotation = new GlTF_Rotation(tr.localRotation);
}
}
if (!node.hasParent)
{
// correctionNode.childrenNames.Add(node.name);
// correctionNode.childrenIDs.Add(node.id);
GlTF_Writer.rootNodes.Add(node);
}
if (tr.GetComponent <Camera>() != null)
{
node.cameraName = GlTF_Writer.cleanNonAlphanumeric(tr.name);
}
else if (tr.GetComponent <Light>() != null)
{
node.lightName = GlTF_Writer.cleanNonAlphanumeric(tr.name);
}
// Parse node's skin data
GlTF_Accessor invBindMatrixAccessor = null;
SkinnedMeshRenderer skinMesh = tr.GetComponent <SkinnedMeshRenderer>();
if (exportAnimation && skinMesh != null && skinMesh.enabled && checkSkinValidity(skinMesh, trs) && skinMesh.rootBone != null)
{
GlTF_Skin skin = new GlTF_Skin();
skin.name = GlTF_Writer.cleanNonAlphanumeric(skinMesh.rootBone.name);// + "_skeleton_" + GlTF_Writer.cleanNonAlphanumeric(node.name) + tr.GetInstanceID();
// Create invBindMatrices accessor
invBindMatrixAccessor = new GlTF_Accessor(skin.name + "invBindMatrices", GlTF_Accessor.Type.MAT4, GlTF_Accessor.ComponentType.FLOAT);
invBindMatrixAccessor.bufferView = GlTF_Writer.mat4BufferView;
GlTF_Writer.accessors.Add(invBindMatrixAccessor);
// Generate skin data
skin.Populate(tr, ref invBindMatrixAccessor, GlTF_Writer.accessors.Count - 1);
GlTF_Writer.skins.Add(skin);
node.skinIndex = GlTF_Writer.skins.IndexOf(skin);
}
foreach (Transform t in tr.transform)
{
if (t.gameObject.activeInHierarchy)
{
node.childrenNames.Add(GlTF_Node.GetNameFromObject(t));
node.childrenIDs.Add(GlTF_Node.GetIDFromObject(t));
}
}
GlTF_Writer.nodeNames.Add(node.name);
GlTF_Writer.nodeIDs.Add(node.id);
GlTF_Writer.nodes.Add(node);
// Debug.Log(node.name + "_" + node.id + "_" + nbIndex++);
}
if (GlTF_Writer.meshes.Count == 0)
{
Debug.Log("No visible objects have been exported. Aboring export");
yield return(false);
}
writer.OpenFiles(path);
writer.Write();
writer.CloseFiles();
if (nbDisabledObjects > 0)
{
Debug.Log(nbDisabledObjects + " disabled object ignored during export");
}
Debug.Log("Scene has been exported to " + path);
EditorUtility.DisplayDialog("状态", "导出成功", "Ok");
done = true;
yield return(true);
}