// Returns the gltf mesh that corresponds to the payload, or null.
// Currently, null is only returned if the payload's 'geometry pool is empty.
// Pass a localXf to override the default, which is to use base.xform
public GlTF_Node ExportMeshPayload(
SceneStatePayload payload,
BaseMeshPayload meshPayload,
[CanBeNull] GlTF_Node parent,
Matrix4x4?localXf = null)
{
var node = ExportMeshPayload_NoMaterial(meshPayload, parent, localXf);
if (node != null)
{
IExportableMaterial exportableMaterial = meshPayload.exportableMaterial;
if (!G.materials.ContainsKey(exportableMaterial))
{
var prims = node.m_mesh?.primitives;
var attrs = (prims != null && prims.Count > 0) ? prims[0].attributes : null;
if (attrs != null)
{
ExportMaterial(payload, meshPayload.MeshNamespace, exportableMaterial, attrs);
Debug.Assert(G.materials.ContainsKey(exportableMaterial));
}
}
}
return(node);
}
// Exports camera into glTF.
// Unused -- if we want to export cameras, they should get their own section in the Payload
// and the payload-creation code will take care of doing basis conversions, coordinate
// space conversions like AsScene[], etc.
#if false
public void ExportCamera(Transform tr)
{
GlTF_Node node = MakeNode(tr);
Debug.Assert(tr.GetComponent <Camera>() != null);
if (tr.GetComponent <Camera>().orthographic)
{
GlTF_Orthographic cam;
cam = new GlTF_Orthographic(G);
cam.type = "orthographic";
cam.zfar = tr.GetComponent <Camera>().farClipPlane;
cam.znear = tr.GetComponent <Camera>().nearClipPlane;
cam.name = tr.name;
G.cameras.Add(cam);
}
else
{
GlTF_Perspective cam;
cam = new GlTF_Perspective(G);
cam.type = "perspective";
cam.zfar = tr.GetComponent <Camera>().farClipPlane;
cam.znear = tr.GetComponent <Camera>().nearClipPlane;
cam.aspect_ratio = tr.GetComponent <Camera>().aspect;
cam.yfov = tr.GetComponent <Camera>().fieldOfView;
cam.name = tr.name;
G.cameras.Add(cam);
}
if (!G.nodes.ContainsKey(tr.name))
{
G.nodes.Add(tr.name, node);
}
}
// If a node with this name is already in the scene, return that node, and created = false.
// Otherwise, returns a newly-created node, and created = true.
// It's considered a user error to ask for the same node twice with 2 different matrices.
//
// It's up to the caller to figure out if "node already created" is an error or not.
// As best as I can tell, we might try and create nodes of the same name if (for example)
// we create a gltf_light and gltf_mesh with the same ObjectName, because both of those
// create a gltf_node to point to the gltf_light and _mesh objects.
//
// Since gltf_node has slots for both lightName and meshName, it can be used as both a light
// and a mesh; so callers should probably not care if created=false; they should instead check
// whether meshName == null. Or perhaps, they should first check to see if they're creating
// a duplicate mesh.
public static GlTF_Node GetOrCreate(
GlTF_Globals globals, ObjectName o,
Matrix4x4 mat, GlTF_Node parent,
out bool created)
{
return(GetOrCreate(globals, GetNameFromObject(o), mat, parent, out created));
}
// This does once-per-light work, as well as once-per-material-per-light work.
// So this ends up being called multiple times with the same parameters, except
// for matObjName.
// matObjName is the name of the material being exported
// lightObjectName is the name of the light
public void ExportLight(LightPayload payload, IExportableMaterial exportableMaterial)
{
ObjectName lightNodeName = new ObjectName(payload.legacyUniqueName); // does need to be unique
// Add the light to the scene -- this does _not_ need to be done per-material.
// As a result, the node will generally have already been created.
GlTF_Node node = GlTF_Node.GetOrCreate(G, lightNodeName, payload.xform, null, out _);
node.lightNameThatDoesNothing = payload.name;
// The names of the uniforms can be anything, really. Named after the light is the most
// logical choice, but note that nobody checks that two lights don't have the same name.
// Thankfully for Tilt Brush, they don't.
// This should probably have used a guaranteed-unique name from the start but I don't want
// to change it now because it'd break my diffs and be kind of ugly.
string lightUniformPrefix = payload.name;
AddUniform(exportableMaterial, lightUniformPrefix + "_matrix",
GlTF_Technique.Type.FLOAT_MAT4, GlTF_Technique.Semantic.MODELVIEW, node);
// Add light color.
GlTF_Material mtl = G.materials[exportableMaterial];
var val = new GlTF_Material.ColorKV {
key = lightUniformPrefix + "_color",
color = payload.lightColor
};
mtl.values.Add(val);
AddUniform(exportableMaterial, val.key,
GlTF_Technique.Type.FLOAT_VEC4, GlTF_Technique.Semantic.UNKNOWN, node);
}
private GlTF_Node(GlTF_Globals globals, string name, Matrix4x4 mat, GlTF_Node parent)
: base(globals)
{
this.Parent = parent;
if (parent != null)
{
parent.m_children.Add(this);
}
this.matrix = new GlTF_Matrix(globals, mat);
this.name = name;
}
/// Always creates a node, but the name may not be your desired name.
public static GlTF_Node Create(
GlTF_Globals globals, string desiredName, Matrix4x4 mat, GlTF_Node parent)
{
string name = desiredName;
for (int i = 0; globals.nodes.ContainsKey(name); ++i)
{
name = $"{desiredName} {i}";
}
return(GetOrCreate(globals, name, mat, parent, out _));
}
// Returns a GlTF_Node; null means "there is no node for this group".
public GlTF_Node GetGroupNode(uint groupId)
{
GlTF_Globals G = m_exporter.G;
if (!G.Gltf2 || groupId == 0)
{
// When exporting for Poly be maximally compatible and don't create interior nodes
return(null);
}
ObjectName name = new ObjectName($"group_{groupId}");
return(GlTF_Node.GetOrCreate(G, name, Matrix4x4.identity, null, out _));
}
// Doesn't do material export; for that see ExportMeshPayload
private GlTF_Node ExportMeshPayload_NoMaterial(
BaseMeshPayload mesh,
[CanBeNull] GlTF_Node parent,
Matrix4x4?localXf = null)
{
ObjectName meshNameAndId = new ObjectName(mesh.legacyUniqueName);
GeometryPool pool = mesh.geometry;
Matrix4x4 xf = localXf ?? mesh.xform;
// Create a Node and (usually) a Mesh, both named after meshNameAndId.
// This is safe because the namespaces for Node and Mesh are distinct.
// If we have already seen the GeometryPool, the Mesh will be reused.
// In this (less common) case, the Node and Mesh will have different names.
// We don't actually ever use the "VERTEXID" attribute, even in gltf1.
// It's time to cut it away.
// Also, in gltf2, it needs to be called _VERTEXID anyway since it's a custom attribute
GlTF_VertexLayout gltfLayout = new GlTF_VertexLayout(G, pool.Layout);
int numTris = pool.NumTriIndices / 3;
if (numTris < 1)
{
return(null);
}
NumTris += numTris;
GlTF_Mesh gltfMesh;
// Share meshes for any repeated geometry pool.
if (!m_meshCache.TryGetValue(pool, out gltfMesh))
{
gltfMesh = new GlTF_Mesh(G);
gltfMesh.name = GlTF_Mesh.GetNameFromObject(meshNameAndId);
gltfMesh.PresentationNameOverride = mesh.geometryName;
m_meshCache.Add(pool, gltfMesh);
// Populate mesh data only once.
AddMeshDependencies(meshNameAndId, mesh.exportableMaterial, gltfMesh, gltfLayout);
gltfMesh.Populate(pool);
G.meshes.Add(gltfMesh);
}
// The mesh may or may not be shared, but every mesh will have a distinct node to allow them
// to have unique transforms.
GlTF_Node node = GlTF_Node.GetOrCreate(G, meshNameAndId, xf, parent, out _);
node.m_mesh = gltfMesh;
node.PresentationNameOverride = mesh.nodeName;
return(node);
}
public void Populate(AnimationClip c, Transform tr)
{
name = "anim_" + c.name + "_" + GlTF_Writer.GetNameFromObject(tr, true);
// AnimationUtility.GetCurveBindings(c);
// look at each curve
// if position, rotation, scale detected for first time
// create channel, sampler, param for it
// populate this curve into proper component
AnimationClipCurveData[] curveDatas = AnimationUtility.GetAllCurves(c, true);
// Find curve which has most keyframes for time reference
Keyframe[] refKeyFrames = null;
for (int i = 0; i < curveDatas.Length; ++i)
{
var cd = curveDatas[i];
if (refKeyFrames == null || cd.curve.keys.Length > refKeyFrames.Length)
{
refKeyFrames = cd.curve.keys;
}
}
PopulateTime(c.name, refKeyFrames);
for (int i = 0; i < curveDatas.Length; i++)
{
var cd = curveDatas[i];
string propName = cd.propertyName;
var boneTransform = GetTransformFromPath(cd.path, tr);
if (boneTransform == null)
{
continue;
}
var boneName = GlTF_Node.GetNameFromObject(boneTransform);
BoneAnimData bad;
if (boneAnimData.ContainsKey(boneName))
{
bad = boneAnimData[boneName];
}
else
{
bad = new BoneAnimData(c.name, boneName);
boneAnimData[boneName] = bad;
}
bad.PopulateAccessor(cd, refKeyFrames);
}
}
public void Populate(SkinnedMeshRenderer smr, List <Transform> skeletons)
{
name = GetNameFromObject(smr.transform);
if (smr.rootBone != null)
{
boneNames = new List <string>();
List <Matrix4x4> boneMats = new List <Matrix4x4>();
var parent = smr.rootBone.parent;
if (parent != null)
{
var mat = Matrix4x4.TRS(parent.localPosition, parent.localRotation, parent.localScale);
bindShape = new GlTF_Matrix(mat);
}
else
{
bindShape = new GlTF_Matrix(Matrix4x4.identity);
}
bindShape.name = "bindShapeMatrix";
skeletons.Add(smr.rootBone);
for (var i = 0; i < smr.bones.Length; ++i)
{
var found = IsBoneInHierarchy(smr.rootBone, smr.bones[i]);
if (!found)
{
// set as its own skeleton to prevent error if it doesn't get included in rootBone hierarchy
skeletons.Add(smr.bones[i]);
}
boneNames.Add(GlTF_Node.GetNameFromObject(smr.bones[i]));
boneMats.Add(smr.sharedMesh.bindposes[i]);
}
ibmAccessor = new GlTF_Accessor("accessor_ibm_" + name, GlTF_Accessor.Type.MAT4, GlTF_Accessor.ComponentType.FLOAT);
ibmAccessor.bufferView = GlTF_Writer.mat4BufferView;
ibmAccessor.Populate(boneMats.ToArray());
GlTF_Writer.accessors.Add(ibmAccessor);
}
}
public static List <string> findRootSkeletons(SkinnedMeshRenderer skin)
{
List <string> skeletons = new List <string>();
List <Transform> tbones = new List <Transform>();
// Get bones
foreach (Transform bone in skin.bones)
{
tbones.Add(bone);
}
List <Transform> haveBParents = new List <Transform>();
// Check and list bones that have parents that are bon in this skin
foreach (Transform b in tbones)
{
Transform temp = b.parent;
while (temp.parent)
{
if (tbones.Contains(temp))
{
haveBParents.Add(b);
break;
}
temp = temp.parent;
}
}
// Remove bones having parents from the list
foreach (Transform b in haveBParents)
{
tbones.Remove(b);
}
foreach (Transform t in tbones)
{
skeletons.Add(GlTF_Node.GetNameFromObject(t));
}
return(skeletons);
}
public void Populate(Transform m, ref GlTF_Accessor invBindMatricesAccessor, int invBindAccessorIndex)
{
SkinnedMeshRenderer skinMesh = m.GetComponent <SkinnedMeshRenderer>();
if (!skinMesh)
{
return;
}
// Populate bind poses. From https://docs.unity3d.com/ScriptReference/Mesh-bindposes.html:
// The bind pose is bone's inverse transformation matrix
// In this case we also make this matrix relative to the root
// So that we can move the root game object around freely
Mesh mesh = skinMesh.sharedMesh;
Matrix4x4[] invBindMatrices = new Matrix4x4[skinMesh.sharedMesh.bindposes.Length];
for (int i = 0; i < invBindMatrices.Length; ++i)
{
// Generates inverseWorldMatrix in right-handed coordinate system
// Manually converts world translation and rotation from left to right handed coordinates systems
Vector3 pos = skinMesh.bones[i].position;
Quaternion rot = skinMesh.bones[i].rotation;
convertQuatLeftToRightHandedness(ref rot);
convertVector3LeftToRightHandedness(ref pos);
invBindMatrices[i] = Matrix4x4.TRS(pos, rot, skinMesh.bones[i].lossyScale).inverse *sceneRootMatrix.inverse;
}
invBindMatricesAccessor.Populate(invBindMatrices, m);
invBindMatricesAccessorIndex = invBindAccessorIndex;
// Fill jointNames
jointNames = new string[skinMesh.bones.Length];
for (int i = 0; i < skinMesh.bones.Length; ++i)
{
jointNames[i] = GlTF_Node.GetNameFromObject(skinMesh.bones[i]);
}
}
// Adds a glTF uniform, as described by name, type, and semantic, to the given technique tech. If
// node is non-null, that is also included (e.g. for lights).
private void AddUniform(
IExportableMaterial exportableMaterial,
string name, GlTF_Technique.Type type,
GlTF_Technique.Semantic semantic, GlTF_Node node = null)
{
//var techName = GlTF_Technique.GetNameFromObject(matObjName);
var tech = GlTF_Writer.GetTechnique(G, exportableMaterial);
GlTF_Technique.Parameter tParam = new GlTF_Technique.Parameter();
tParam.name = name;
tParam.type = type;
tParam.semantic = semantic;
if (node != null)
{
tParam.node = node;
}
tech.parameters.Add(tParam);
GlTF_Technique.Uniform tUniform = new GlTF_Technique.Uniform();
tUniform.name = "u_" + name;
tUniform.param = tParam.name;
tech.uniforms.Add(tUniform);
}
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.nodeNames.IndexOf(GlTF_Node.GetNameFromObject(j)));
}
IndentOut();
jsonWriter.WriteLine();
Indent(); jsonWriter.Write("],\n");
Indent(); jsonWriter.Write("\"name\": \"" + name + "\",\n");
Indent(); jsonWriter.Write("\"skeleton\": " + GlTF_Writer.nodeNames.IndexOf(GlTF_Node.GetNameFromObject(rootBone)) + "\n");
IndentOut();
Indent(); jsonWriter.Write("}");
}
private static GlTF_Node GetOrCreate(
GlTF_Globals globals, string name,
Matrix4x4 mat, GlTF_Node parent,
out bool created)
{
if (globals.nodes.ContainsKey(name))
{
var ret = globals.nodes[name];
if (ret.matrix.unityMatrix != mat)
{
Debug.LogErrorFormat("Node {0} cannot have two different matrices", name);
}
created = false;
}
else
{
var ret = new GlTF_Node(globals, name, mat, parent);
globals.nodes[name] = ret;
created = true;
return(ret);
}
return(globals.nodes[name]);
}
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);
// Create rootNode
GlTF_Node correctionNode = new GlTF_Node();
correctionNode.id = "UnityGlTF_root";
correctionNode.name = "UnityGlTF_root";
GlTF_Writer.nodes.Add(correctionNode);
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;
foreach (Transform tr in trs)
{
if (tr.gameObject.activeInHierarchy == false)
{
nbDisabledObjects++;
continue;
}
// Initialize the node
GlTF_Node node = new GlTF_Node();
node.id = 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.name = GlTF_Writer.cleanNonAlphanumeric(GlTF_Mesh.GetNameFromObject(m) + tr.name);
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(a.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(animation.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.id);
}
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));
}
}
GlTF_Writer.nodeNames.Add(node.id);
GlTF_Writer.nodes.Add(node);
}
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);
if (buildZip)
{
ZipFile zip = new ZipFile();
Debug.Log(GlTF_Writer.exportedFiles.Count + " files generated");
string zipName = Path.GetFileNameWithoutExtension(path) + ".zip";
foreach (string originFilePath in GlTF_Writer.exportedFiles.Keys)
{
zip.AddFile(originFilePath, GlTF_Writer.exportedFiles[originFilePath]);
}
zip.Save(savedPath + "/" + zipName);
// Remove all files
foreach (string pa in GlTF_Writer.exportedFiles.Keys)
{
if (System.IO.File.Exists(pa))
{
System.IO.File.Delete(pa);
}
}
Debug.Log("Files have been cleaned");
}
done = true;
yield return(true);
}
private void WriteObjectsAndConnections(GlTF_ScriptableExporter exporter,
SceneStatePayload payload)
{
foreach (BrushMeshPayload meshPayload in payload.groups.SelectMany(g => g.brushMeshes))
{
exporter.ExportMeshPayload(payload, meshPayload, GetGroupNode(meshPayload.group));
}
foreach (var sameInstance in payload.modelMeshes.GroupBy(m => (m.model, m.modelId)))
{
var modelMeshPayloads = sameInstance.ToList();
if (modelMeshPayloads.Count == 0)
{
continue;
}
// All of these pieces will come from the same Widget and therefore will have
// the same group id, root transform, etc
var first = modelMeshPayloads[0];
GlTF_Node groupNode = GetGroupNode(first.group);
if (exporter.G.Gltf2)
{
// Non-Poly exports get a multi-level structure for meshes: transform node on top,
// all the contents as direct children.
string rootNodeName = $"model_{first.model.GetExportName()}_{first.modelId}";
if (modelMeshPayloads.Count == 1 && first.localXform.isIdentity)
{
// Condense the two levels into one; give the top-level node the same name
// it would have had had it been multi-level.
GlTF_Node newNode = exporter.ExportMeshPayload(payload, first, groupNode);
newNode.PresentationNameOverride = rootNodeName;
}
else
{
GlTF_Node parentNode = GlTF_Node.Create(
exporter.G, rootNodeName,
first.parentXform, groupNode);
foreach (var modelMeshPayload in modelMeshPayloads)
{
exporter.ExportMeshPayload(payload, modelMeshPayload, parentNode,
modelMeshPayload.localXform);
}
}
}
else
{
// The new code's been tested with Poly and works fine, but out of
// an abundance of caution, keep Poly unchanged
foreach (var modelMeshPayload in modelMeshPayloads)
{
exporter.ExportMeshPayload(payload, modelMeshPayload, groupNode);
}
}
}
foreach (ImageQuadPayload meshPayload in payload.imageQuads)
{
exporter.ExportMeshPayload(payload, meshPayload, GetGroupNode(meshPayload.group));
}
foreach (var(xformPayload, i) in payload.referenceThings.WithIndex())
{
string uniqueName = $"empty_{xformPayload.name}_{i}";
var node = GlTF_Node.Create(exporter.G, uniqueName, xformPayload.xform, null);
node.PresentationNameOverride = $"empty_{xformPayload.name}";
}
}
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);
// 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.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.vec3BufferView;
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.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.vec4BufferView;
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.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.vec3BufferView;
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 static int GetIDFromObject(GlTF_Node o)
{
return(o.GetHashCode());
}
void OnWizardCreate() // Create (Export) button has been hit (NOT wizard has been created!)
{
writer = new GlTF_Writer();
writer.Init ();
/*
Object[] deps = EditorUtility.CollectDependencies (trs);
foreach (Object o in deps)
{
Debug.Log("obj "+o.name+" "+o.GetType());
}
*/
path = EditorUtility.SaveFilePanel("Save glTF file as", savedPath, savedFile, "gltf");
if (path.Length != 0)
{
Debug.Log ("attempting to save to "+path);
writer.OpenFiles (path);
// FOR NOW!
GlTF_Sampler sampler = new GlTF_Sampler("sampler1"); // make the default one for now
GlTF_Writer.samplers.Add (sampler);
// first, collect objects in the scene, add to lists
Transform[] trs = Selection.GetTransforms (SelectionMode.Deep);
foreach (Transform tr in trs)
{
if (tr.camera != null)
{
if (tr.camera.isOrthoGraphic)
{
GlTF_Orthographic cam;
cam = new GlTF_Orthographic();
cam.type = "orthographic";
cam.zfar = tr.camera.farClipPlane;
cam.znear = tr.camera.nearClipPlane;
cam.name = tr.name;
//cam.orthographic.xmag = tr.camera.
GlTF_Writer.cameras.Add(cam);
}
else
{
GlTF_Perspective cam;
cam = new GlTF_Perspective();
cam.type = "perspective";
cam.zfar = tr.camera.farClipPlane;
cam.znear = tr.camera.nearClipPlane;
cam.aspect_ratio = tr.camera.aspect;
cam.yfov = tr.camera.fieldOfView;
cam.name = tr.name;
GlTF_Writer.cameras.Add(cam);
}
}
if (tr.light != null)
{
switch (tr.light.type)
{
case LightType.Point:
GlTF_PointLight pl = new GlTF_PointLight();
pl.color = new GlTF_ColorRGB (tr.light.color);
pl.name = tr.name;
GlTF_Writer.lights.Add (pl);
break;
case LightType.Spot:
GlTF_SpotLight sl = new GlTF_SpotLight();
sl.color = new GlTF_ColorRGB (tr.light.color);
sl.name = tr.name;
GlTF_Writer.lights.Add (sl);
break;
case LightType.Directional:
GlTF_DirectionalLight dl = new GlTF_DirectionalLight();
dl.color = new GlTF_ColorRGB (tr.light.color);
dl.name = tr.name;
GlTF_Writer.lights.Add (dl);
break;
case LightType.Area:
GlTF_AmbientLight al = new GlTF_AmbientLight();
al.color = new GlTF_ColorRGB (tr.light.color);
al.name = tr.name;
GlTF_Writer.lights.Add (al);
break;
}
}
MeshRenderer mr = tr.GetComponent<MeshRenderer>();
if (mr != null)
{
MeshFilter mf = tr.GetComponent<MeshFilter>();
Mesh m = mf.sharedMesh;
GlTF_Accessor normalAccessor = new GlTF_Accessor("normalAccessor-" + tr.name + "_FIXTHIS", "VEC3", "FLOAT");
GlTF_Accessor positionAccessor = new GlTF_Accessor("positionAccessor-" + tr.name + "_FIXTHIS", "VEC3", "FLOAT");
GlTF_Accessor texCoord0Accessor = new GlTF_Accessor("texCoord0Accessor-" + tr.name + "_FIXTHIS", "VEC2", "FLOAT");
GlTF_Accessor indexAccessor = new GlTF_Accessor("indicesAccessor-" + tr.name + "_FIXTHIS", "SCALAR", "USHORT");
indexAccessor.bufferView = GlTF_Writer.ushortBufferView;
normalAccessor.bufferView = GlTF_Writer.vec3BufferView;
positionAccessor.bufferView = GlTF_Writer.vec3BufferView;
texCoord0Accessor.bufferView = GlTF_Writer.vec2BufferView;
GlTF_Mesh mesh = new GlTF_Mesh();
mesh.name = "mesh-" + tr.name;
GlTF_Primitive primitive = new GlTF_Primitive();
primitive.name = "primitive-"+tr.name+"_FIXTHIS";
GlTF_Attributes attributes = new GlTF_Attributes();
attributes.normalAccessor = normalAccessor;
attributes.positionAccessor = positionAccessor;
attributes.texCoord0Accessor = texCoord0Accessor;
primitive.attributes = attributes;
primitive.indices = indexAccessor;
mesh.primitives.Add (primitive);
mesh.Populate (m);
GlTF_Writer.accessors.Add (normalAccessor);
GlTF_Writer.accessors.Add (positionAccessor);
GlTF_Writer.accessors.Add (texCoord0Accessor);
GlTF_Writer.accessors.Add (indexAccessor);
GlTF_Writer.meshes.Add (mesh);
// next, add material(s) to dictionary (when unique)
string matName = mr.sharedMaterial.name;
if (matName == "")
matName = "material-diffault-diffuse";
else
matName = "material-" + matName;
primitive.materialName = matName;
if (!GlTF_Writer.materials.ContainsKey (matName))
{
GlTF_Material material = new GlTF_Material();
material.name = matName;
if (mr.sharedMaterial.HasProperty ("shininess"))
material.shininess = mr.sharedMaterial.GetFloat("shininess");
material.diffuse = new GlTF_MaterialColor ("diffuse", mr.sharedMaterial.color);
//material.ambient = new GlTF_Color ("ambient", mr.material.color);
if (mr.sharedMaterial.HasProperty ("specular"))
{
Color sc = mr.sharedMaterial.GetColor ("specular");
material.specular = new GlTF_MaterialColor ("specular", sc);
}
GlTF_Writer.materials.Add (material.name, material);
// if there are textures, add them too
if (mr.sharedMaterial.mainTexture != null)
{
if (!GlTF_Writer.textures.ContainsKey (mr.sharedMaterial.mainTexture.name))
{
GlTF_Texture texture = new GlTF_Texture ();
texture.name = mr.sharedMaterial.mainTexture.name;
texture.source = AssetDatabase.GetAssetPath(mr.sharedMaterial.mainTexture);
texture.samplerName = sampler.name; // FIX! For now!
GlTF_Writer.textures.Add (mr.sharedMaterial.mainTexture.name, texture);
material.diffuse = new GlTF_MaterialTexture ("diffuse", texture);
}
}
}
}
Animation a = tr.animation;
// Animator a = tr.GetComponent<Animator>();
if (a != null)
{
AnimationClip[] clips = AnimationUtility.GetAnimationClips(tr.gameObject);
int nClips = clips.Length;
// int nClips = a.GetClipCount();
for (int i = 0; i < nClips; i++)
{
GlTF_Animation anim = new GlTF_Animation(a.name);
anim.Populate (clips[i]);
GlTF_Writer.animations.Add (anim);
}
}
// next, build hierarchy of nodes
GlTF_Node node = new GlTF_Node();
if (tr.parent != null)
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);
node.name = tr.name;
if (tr.camera != null)
{
node.cameraName = tr.name;
}
else if (tr.light != null)
node.lightName = tr.name;
else if (mr != null)
{
node.meshNames.Add ("mesh-" + tr.name);
}
foreach (Transform t in tr.transform)
node.childrenNames.Add ("node-" + t.name);
GlTF_Writer.nodes.Add (node);
}
// third, add meshes etc to byte stream, keeping track of buffer offsets
writer.Write ();
writer.CloseFiles();
}
}
public static BoundsDouble Export(string path, Transform[] trs, Transform root, out double minHeight, out double maxHeight)
{
minHeight = 0;
maxHeight = 0;
writer = new GlTF_Writer();
writer.Init();
if (presetAsset != null)
{
string psPath = AssetDatabase.GetAssetPath(presetAsset);
if (psPath != null)
{
psPath = psPath.Remove(0, "Assets".Length);
psPath = Application.dataPath + psPath;
preset.Load(psPath);
}
}
savedPath = Path.GetDirectoryName(path);
savedFile = Path.GetFileNameWithoutExtension(path);
EditorPrefs.SetString(KEY_PATH, savedPath);
EditorPrefs.SetString(KEY_FILE, savedFile);
Debug.Log("attempting to save to " + path);
writer.OpenFiles(path);
if (rtcScript != null && root != null)
{
var instance = Activator.CreateInstance(rtcScript.GetClass());
var rtc = instance as RTCCallback;
if (rtc != null)
{
writer.RTCCenter = rtc.GetCenter(root);
}
}
RotationCallback rotCallback = null;;
if (rotScript != null)
{
var instance = Activator.CreateInstance(rotScript.GetClass());
rotCallback = instance as RotationCallback;
}
if (unpackTexture)
{
// prepass, for texture unpacker
TextureUnpacker.Reset();
foreach (Transform tr in trs)
{
TextureUnpacker.CheckPackedTexture(tr, preset);
}
TextureUnpacker.Build();
}
BoundsDouble bb = new BoundsDouble();
// first, collect objects in the scene, add to lists
foreach (Transform tr in trs)
{
if (tr.GetComponent <Camera>() != null)
{
if (tr.GetComponent <Camera>().orthographic)
{
GlTF_Orthographic cam;
cam = new GlTF_Orthographic();
cam.type = "orthographic";
cam.zfar = tr.GetComponent <Camera>().farClipPlane;
cam.znear = tr.GetComponent <Camera>().nearClipPlane;
cam.name = tr.name;
//cam.orthographic.xmag = tr.camera.
GlTF_Writer.cameras.Add(cam);
}
else
{
GlTF_Perspective cam;
cam = new GlTF_Perspective();
cam.type = "perspective";
cam.zfar = tr.GetComponent <Camera>().farClipPlane;
cam.znear = tr.GetComponent <Camera>().nearClipPlane;
cam.aspect_ratio = tr.GetComponent <Camera>().aspect;
cam.yfov = tr.GetComponent <Camera>().fieldOfView;
cam.name = tr.name;
GlTF_Writer.cameras.Add(cam);
}
}
if (tr.GetComponent <Light>() != null)
{
switch (tr.GetComponent <Light>().type)
{
case LightType.Point:
GlTF_PointLight pl = new GlTF_PointLight();
pl.color = new GlTF_ColorRGB(tr.GetComponent <Light>().color);
pl.name = tr.name;
GlTF_Writer.lights.Add(pl);
break;
case LightType.Spot:
GlTF_SpotLight sl = new GlTF_SpotLight();
sl.color = new GlTF_ColorRGB(tr.GetComponent <Light>().color);
sl.name = tr.name;
GlTF_Writer.lights.Add(sl);
break;
case LightType.Directional:
GlTF_DirectionalLight dl = new GlTF_DirectionalLight();
dl.color = new GlTF_ColorRGB(tr.GetComponent <Light>().color);
dl.name = tr.name;
GlTF_Writer.lights.Add(dl);
break;
case LightType.Area:
GlTF_AmbientLight al = new GlTF_AmbientLight();
al.color = new GlTF_ColorRGB(tr.GetComponent <Light>().color);
al.name = tr.name;
GlTF_Writer.lights.Add(al);
break;
}
}
Mesh m = GetMesh(tr);
if (m != null)
{
GlTF_Mesh mesh = new GlTF_Mesh();
mesh.name = 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 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)
{
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);
}
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.texCoord0Accessor = uv0Accessor;
attributes.texCoord1Accessor = uv1Accessor;
attributes.texCoord2Accessor = uv2Accessor;
attributes.texCoord3Accessor = uv3Accessor;
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 && sm[i] != null)
{
var mat = sm[i];
var matName = GlTF_Material.GetNameFromObject(mat);
primitive.materialName = matName;
if (!GlTF_Writer.materials.ContainsKey(matName))
{
GlTF_Material material = new GlTF_Material();
material.name = matName;
GlTF_Writer.materials.Add(material.name, material);
//technique
var s = mat.shader;
var techName = GlTF_Technique.GetNameFromObject(s);
material.instanceTechniqueName = techName;
if (!GlTF_Writer.techniques.ContainsKey(techName))
{
GlTF_Technique tech = new GlTF_Technique();
tech.name = techName;
GlTF_Technique.States ts = null;
if (preset.techniqueStates.ContainsKey(s.name))
{
ts = preset.techniqueStates[s.name];
}
else if (preset.techniqueStates.ContainsKey("*"))
{
ts = preset.techniqueStates["*"];
}
if (ts == null)
{
// Unless otherwise specified by a preset file, enable z-buffering.
ts = new GlTF_Technique.States();
const int DEPTH_TEST = 2929;
// int CULL_FACE = 2884;
ts.enable = new int[1] {
DEPTH_TEST
};
}
tech.states = ts;
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(writer.RTCCenter != null);
GlTF_Writer.techniques.Add(techName, tech);
int spCount = ShaderUtil.GetPropertyCount(s);
for (var j = 0; j < spCount; ++j)
{
var pName = ShaderUtil.GetPropertyName(s, j);
var pType = ShaderUtil.GetPropertyType(s, j);
// Debug.Log(pName + " " + pType);
GlTF_Technique.Uniform tUni;
if (pType == ShaderUtil.ShaderPropertyType.Color)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = pName;
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tech.parameters.Add(tParam);
tUni = new GlTF_Technique.Uniform();
tUni.name = pName;
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
else if (pType == ShaderUtil.ShaderPropertyType.Vector)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = pName;
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tech.parameters.Add(tParam);
tUni = new GlTF_Technique.Uniform();
tUni.name = pName;
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
else if (pType == ShaderUtil.ShaderPropertyType.Float ||
pType == ShaderUtil.ShaderPropertyType.Range)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = pName;
tParam.type = GlTF_Technique.Type.FLOAT;
tech.parameters.Add(tParam);
tUni = new GlTF_Technique.Uniform();
tUni.name = pName;
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
else if (pType == ShaderUtil.ShaderPropertyType.TexEnv)
{
var td = ShaderUtil.GetTexDim(s, j);
if (td == UnityEngine.Rendering.TextureDimension.Tex2D)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = pName;
tParam.type = GlTF_Technique.Type.SAMPLER_2D;
tech.parameters.Add(tParam);
tUni = new GlTF_Technique.Uniform();
tUni.name = pName;
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
}
}
// 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);
// shader
GlTF_Shader vs = new GlTF_Shader();
vs.name = GlTF_Shader.GetNameFromObject(s, GlTF_Shader.Type.Vertex);
program.vertexShader = vs.name;
vs.type = GlTF_Shader.Type.Vertex;
vs.uri = preset.GetVertexShader(s.name);
GlTF_Writer.shaders.Add(vs);
GlTF_Shader fs = new GlTF_Shader();
fs.name = GlTF_Shader.GetNameFromObject(s, GlTF_Shader.Type.Fragment);
program.fragmentShader = fs.name;
fs.type = GlTF_Shader.Type.Fragment;
fs.uri = preset.GetFragmentShader(s.name);
GlTF_Writer.shaders.Add(fs);
}
int spCount2 = ShaderUtil.GetPropertyCount(s);
for (var j = 0; j < spCount2; ++j)
{
var pName = ShaderUtil.GetPropertyName(s, j);
var pType = ShaderUtil.GetPropertyType(s, j);
if (pType == ShaderUtil.ShaderPropertyType.Color)
{
var matCol = new GlTF_Material.ColorValue();
matCol.name = pName;
matCol.color = mat.GetColor(pName);
material.values.Add(matCol);
}
else if (pType == ShaderUtil.ShaderPropertyType.Vector)
{
var matVec = new GlTF_Material.VectorValue();
matVec.name = pName;
matVec.vector = mat.GetVector(pName);
material.values.Add(matVec);
}
else if (pType == ShaderUtil.ShaderPropertyType.Float ||
pType == ShaderUtil.ShaderPropertyType.Range)
{
var matFloat = new GlTF_Material.FloatValue();
matFloat.name = pName;
matFloat.value = mat.GetFloat(pName);
material.values.Add(matFloat);
}
else if (pType == ShaderUtil.ShaderPropertyType.TexEnv)
{
var td = ShaderUtil.GetTexDim(s, j);
if (td == UnityEngine.Rendering.TextureDimension.Tex2D)
{
var t = mat.GetTexture(pName);
if (t == null)
{
continue;
}
var val = new GlTF_Material.StringValue();
val.name = pName;
string texName = null;
texName = GlTF_Texture.GetNameFromObject(t);
val.value = texName;
material.values.Add(val);
if (!GlTF_Writer.textures.ContainsKey(texName))
{
var texPath = ExportTexture(t, savedPath);
GlTF_Image img = new GlTF_Image();
img.name = GlTF_Image.GetNameFromObject(t);
img.uri = texPath;
GlTF_Writer.images.Add(img);
GlTF_Sampler sampler;
var samplerName = GlTF_Sampler.GetNameFromObject(t);
if (GlTF_Writer.samplers.ContainsKey(samplerName))
{
sampler = GlTF_Writer.samplers[samplerName];
}
else
{
sampler = new GlTF_Sampler(t);
sampler.name = samplerName;
GlTF_Writer.samplers[samplerName] = sampler;
}
GlTF_Texture texture = new GlTF_Texture();
texture.name = texName;
texture.source = img.name;
texture.samplerName = samplerName;
GlTF_Writer.textures.Add(texName, texture);
}
}
}
}
}
}
mesh.primitives.Add(primitive);
}
mesh.Populate(m);
GlTF_Writer.meshes.Add(mesh);
if (unpackTexture)
{
TextureUnpacker.ProcessMesh(mesh);
}
// calculate bounding box transform
if (root != null)
{
Matrix4x4 brot = Matrix4x4.identity;
if (rotCallback != null)
{
brot = rotCallback.GetBoundsRotationMatrix(root);
}
var pos = tr.position - root.position; // relative to parent
var objMat = Matrix4x4.TRS(pos, tr.rotation, tr.lossyScale);
//read vertices
var ms = positionAccessor.bufferView.memoryStream;
var offset = (int)positionAccessor.byteOffset;
var len = positionAccessor.count;
var buffer = new byte[len * 12];
var mspos = ms.Position;
ms.Position = offset;
ms.Read(buffer, 0, buffer.Length);
minHeight = double.MaxValue;
maxHeight = double.MinValue;
double[] c = writer.RTCCenter;
double[] minPos = new double[3];
minPos[0] = double.MaxValue;
minPos[1] = double.MaxValue;
minPos[2] = double.MaxValue;
double[] maxPos = new double[3];
maxPos[0] = double.MinValue;
maxPos[1] = double.MinValue;
maxPos[2] = double.MinValue;
for (int j = 0; j < len; ++j)
{
var x = System.BitConverter.ToSingle(buffer, j * 12);
var y = System.BitConverter.ToSingle(buffer, j * 12 + 4);
var z = System.BitConverter.ToSingle(buffer, j * 12 + 8);
// local rotation
var lx = objMat.m00 * x + objMat.m01 * y + objMat.m02 * z;
var ly = objMat.m10 * x + objMat.m11 * y + objMat.m12 * z;
var lz = objMat.m20 * x + objMat.m21 * y + objMat.m22 * z;
minHeight = Math.Min(minHeight, ly);
maxHeight = Math.Max(maxHeight, ly);
// to world
double wx = brot.m00 * lx + brot.m01 * ly + brot.m02 * lz;
double wy = brot.m10 * lx + brot.m11 * ly + brot.m12 * lz;
double wz = brot.m20 * lx + brot.m21 * ly + brot.m22 * lz;
// local translation to world
double tx = brot.m00 * pos.x + brot.m01 * pos.y + brot.m02 * pos.z;
double ty = brot.m10 * pos.x + brot.m11 * pos.y + brot.m12 * pos.z;
double tz = brot.m20 * pos.x + brot.m21 * pos.y + brot.m22 * pos.z;
wx += tx;
wy += ty;
wz += tz;
if (c != null)
{
wx += c[0];
wy += c[1];
wz += c[2];
}
minPos[0] = Math.Min(minPos[0], wx);
minPos[1] = Math.Min(minPos[1], wy);
minPos[2] = Math.Min(minPos[2], wz);
maxPos[0] = Math.Max(maxPos[0], wx);
maxPos[1] = Math.Max(maxPos[1], wy);
maxPos[2] = Math.Max(maxPos[2], wz);
}
ms.Position = mspos;
BoundsDouble tbb = new BoundsDouble();
tbb.Encapsulate(new BoundsDouble(minPos, maxPos));
bb.Encapsulate(tbb);
}
}
Animation a = tr.GetComponent <Animation>();
// Animator a = tr.GetComponent<Animator>();
if (a != null)
{
AnimationClip[] clips = AnimationUtility.GetAnimationClips(tr.gameObject);
int nClips = clips.Length;
// int nClips = a.GetClipCount();
for (int i = 0; i < nClips; i++)
{
GlTF_Animation anim = new GlTF_Animation(a.name);
anim.Populate(clips[i]);
GlTF_Writer.animations.Add(anim);
}
}
// next, build hierarchy of nodes
GlTF_Node node = new GlTF_Node();
Matrix4x4 rotMat = Matrix4x4.identity;
if (root != null && rotCallback != null)
{
rotMat = rotCallback.GetNodeRotationMatrix(root);
}
if (tr == root)
{
Matrix4x4 mat = Matrix4x4.identity;
mat.m22 = -1; // flip z axis
if (rotMat != Matrix4x4.identity)
{
mat = rotMat;
}
// do not use global position if rtc is defined
Vector3 pos = Vector3.zero;
if (writer.RTCCenter == null)
{
pos = tr.localPosition;
}
mat = mat * Matrix4x4.TRS(pos, tr.localRotation, tr.localScale);
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);
}
}
node.name = GlTF_Node.GetNameFromObject(tr);
if (tr.GetComponent <Camera>() != null)
{
node.cameraName = tr.name;
}
else if (tr.GetComponent <Light>() != null)
{
node.lightName = tr.name;
}
else if (m != null)
{
node.meshNames.Add(GlTF_Mesh.GetNameFromObject(m));
}
foreach (Transform t in tr.transform)
{
var found = false;
foreach (var check in trs)
{
if (t == check)
{
found = true;
break;
}
}
if (found)
{
node.childrenNames.Add(GlTF_Node.GetNameFromObject(t));
}
}
GlTF_Writer.nodes.Add(node);
}
if (copyShaders && preset.shaderDir != null)
{
var sd = Path.Combine(Application.dataPath, preset.shaderDir);
foreach (var shader in GlTF_Writer.shaders)
{
var srcPath = Path.Combine(sd, shader.uri);
if (File.Exists(srcPath))
{
var dstPath = Path.Combine(savedPath, shader.uri);
File.Copy(srcPath, dstPath, true);
}
}
}
// third, add meshes etc to byte stream, keeping track of buffer offsets
writer.Write();
writer.CloseFiles();
return(bb);
}
// Rebuild hierarchy and returns root bone
public Transform rebuildBoneHierarchy(SkinnedMeshRenderer skin, ref List <Transform> joints)
{
List <string> skeletons = new List <string>();
List <Transform> tbones = new List <Transform>();
List <Transform> traversed = new List <Transform>(); // Will be returned and contain all the nodes that are in the hierarchy but not used as bones (that need to be converted)
Transform computedRoot = null;
// Get bones
foreach (Transform bone in skin.bones)
{
tbones.Add(bone);
}
List <Transform> haveBParents = new List <Transform>();
// Check and list bones that have parents that are bon in this skin
foreach (Transform b in tbones)
{
Transform temp = b.parent;
while (temp.parent)
{
if (tbones.Contains(temp))
{
haveBParents.Add(b);
break;
}
temp = temp.parent;
}
}
// Remove bones having parents from the list
foreach (Transform b in haveBParents)
{
tbones.Remove(b);
}
// if more than one root, find common ancestor
if (tbones.Count > 1)
{
Transform rootSkeleton = null; //Will get the final root node
List <Transform> visited = new List <Transform>(tbones); // internal list to detect parenting
List <Transform> evol = new List <Transform>(tbones); // used to increment on each node
// Get the parent of each bone
while (evol.Count > 1)
{
for (int i = 0; i < evol.Count; ++i)
{
evol[i] = evol[i].parent;
if (evol[i] != null)
{
if (!traversed.Contains(evol[i]))
{
traversed.Add(evol[i]);
}
if (visited.Contains(evol[i]))
{
rootSkeleton = evol[i];
evol[i] = null;
}
else
{
visited.Add(evol[i]);
}
}
}
List <Transform> clean = new List <Transform>();
foreach (Transform t in evol)
{
if (t)
{
clean.Add(t);
}
}
evol = new List <Transform>(clean);
}
skeletons.Add(GlTF_Node.GetNameFromObject(rootSkeleton));
computedRoot = rootSkeleton;
}
else if (tbones.Count == 1)
{
skeletons.Add(GlTF_Node.GetNameFromObject(tbones[0]));
computedRoot = tbones[0];
}
joints.AddRange(traversed);
return(computedRoot);
}