Features & ToDo

• gltf
• glb
• Separate editor code
• Unity-5.6 compatibility

material & texture

features	importer	exporter	memo
color	o	o	/materials/#/pbrMetallicRoughness/baseColorFactor
color texture	o	o	/materials/#/pbrMetallicRoughness/baseColorTexture
sampler	o	o	/samplers
multi uv
metallic map	o		/materials/#/pbrMetallicRoughness/metallicRoughnessTexture, require convert
normal map	o		/materials/#/normalTexture
occlusion map	o		/materials/#/occlusionTexture, require convert
emissive	o		/materials/#/emissiveFactor, material.enalbeKeyword("_EMISSION") not affect
emissive map	o		/materials/#/emissiveMap, material.enalbeKeyword("_EMISSION") not affect

var texture=new Texture2D(2, 2);
texture.LoadImage(bytes, true);
texture.wrapModeU = TextureWrapMode.Clamp;
texture.wrapModeV = TextureWrapMode.Clamp;
texture.filterMode = FilterMode.Point;

var shader=Shader.Find("Standard");
var material=new Material(shader);
material.color = pbrMetallicRoughness.baseColorFactor;
material.mainTexture = texture;

mesh

features	importer	exporter	memo
positions	o	o	/meshes/#/primitives/#/attributes/POSITION, reverse-z
normals	o	o	/meshes/#/primitives/#/attributes/NORMAL, reverse-z
uv	o	o	/meshes/#/primitives/#/attributes/TEXCOORD_0, reverse-y
tangent	o	o	/meshes/#/primitives/#/attributes/TANGENT, reverse-z
primitive	o	o	/meshes/#/primitives/#/indices
sharing attributes	o	o

var mesh=new Mesh();
mesh.vertices = positions;
mesh.normals = normals;
mesh.uv = uv;

mesh.subMeshCount=primitiveCount;
for(int i=0; i<primitiveCount; ++i)
{
    mesh.setTriangles(primitive[i].indices, i);
}    

morph target

features	importer	exporter	memo
blend shape	o	o	/meshes/#/primitives/#/targets
name ?

foreach(var target in targets)
{
    mesh.addBlendSapeFrame(target.name, 100.0f, target.POSITION, target.NORMAL, target.TEXCOORD_0);
}

skin

• Matrix4x4 Behavior may be different between Unity 2017 and Unity 5.6
• Because of the bindmatrix, The animation of models with different inverseBindMatrices and node hierarchy break

// workaround. calculate bindMatrices from hierarchy
var hipsParent = nodes[skin.skeleton].Transform.parent;
var bindMatrices = joints.Select(y => y.worldToLocalMatrix * hipsParent.localToWorldMatrix).ToArray();
mesh.bindposes = bindMatrices;

features	importer	exporter	memo
boneweight	o	o	/meshes/#/primitives/#/attributes/(JOINTS_0,WEIGHTS_0)
bindmatrix	o	o	/skins/#/inverseBindMatrices
skeleton	o	o	/skins/#/skeleton
joints	o	o	/skins/#/joints

mesh.boneWeights=boneWeights;
mesh.bindposes=inverseBindMatrices

var skin=go.addCompoenent<SkinnedMeshRenderer>();
skin.bones=joints;
skin.rootBone=skeleton;

node

features	importer	exporter	memo
translation	o	o	/nodes/#/tlanslation, reverse-z
rotation	o	o	/nodes/#/rotation, reverse-z
scale	o	o	/nodes/#/scale
matrix	o	-	/nodes/#/matrix, reverse-z

animation

• reverse-z. BindMatrices reverse-z in global, each curves reverse-z in bone local.
• AnimationUtility.GetCurveBindings

features	importer	exporter	memo
TRS	o	o	/anmations/#/channels/#/target/path == translation
blendshape	o		/animation/#/channels/#/target/path == weight
interpolation

foreach (var binding in AnimationUtility.GetCurveBindings(clip))
{
    // Curve binding acquisition is possible only in editor mode
    var curve = AnimationUtility.GetEditorCurve(clip, binding);
    foreach(var key in curve.keys)
    {

    }
}

legacy

for Animation component.

var clip=new AnimationClip();
clip.legacy=true;

var animation = go.AddComponent<Animation>();
animation.clip = clip;

generic

for Animator component.

humanoid

for Animator component. require humanoid avatar.

not implemented

• Camera
• Light