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SceneToGlTFWiz.cs
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SceneToGlTFWiz.cs
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/***************************************************************************
GlamExport
- Unity3D Scriptable Wizard to export Hierarchy or Project objects as glTF
****************************************************************************/
using UnityEngine;
using UnityEditor;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using System.Text;
using System.Reflection;
public class SceneToGlTFWiz : EditorWindow
{
// static public List<GlTF_Accessor> Accessors;
// static public List<GlTF_BufferView> BufferViews;
static public GlTF_Writer writer;
const string KEY_PATH = "GlTFPath";
const string KEY_FILE = "GlTFFile";
static public string path = "?";
static XmlDocument xdoc;
static string savedPath;
static string savedFile;
static Preset preset = new Preset();
public static UnityEngine.TextAsset presetAsset;
public interface RTCCallback
{
double[] GetCenter(Transform transform);
}
public interface RotationCallback
{
Matrix4x4 GetBoundsRotationMatrix(Transform transform);
Matrix4x4 GetNodeRotationMatrix(Transform transform);
}
public static MonoScript rtcScript;
public static MonoScript rotScript;
public static bool unpackTexture = false;
public static bool copyShaders = false;
[MenuItem ("File/Export/glTF")]
static void CreateWizard()
{
savedPath = EditorPrefs.GetString (KEY_PATH, "/");
savedFile = EditorPrefs.GetString (KEY_FILE, "test.gltf");
path = savedPath + "/"+ savedFile;
// ScriptableWizard.DisplayWizard("Export Selected Stuff to glTF", typeof(SceneToGlTFWiz), "Export");
SceneToGlTFWiz window = (SceneToGlTFWiz)EditorWindow.GetWindow (typeof (SceneToGlTFWiz));
window.Show();
}
void OnEnable()
{
savedPath = EditorPrefs.GetString (KEY_PATH, "/");
savedFile = EditorPrefs.GetString (KEY_FILE, "test.gltf");
}
void OnWizardUpdate ()
{
// Texture[] txs = Selection.GetFiltered(Texture, SelectionMode.Assets);
// Debug.Log("found "+txs.Length);
}
void OnWizardCreate() // Create (Export) button has been hit (NOT wizard has been created!)
{
/*
Object[] deps = EditorUtility.CollectDependencies (trs);
foreach (Object o in deps)
{
Debug.Log("obj "+o.name+" "+o.GetType());
}
*/
var ext = GlTF_Writer.binary ? (GlTF_Writer.b3dm ? "b3dm" : "glb") : "gltf";
path = EditorUtility.SaveFilePanel("Save glTF file as", savedPath, savedFile, ext);
if (path.Length != 0)
{
Transform[] trs = Selection.GetTransforms (SelectionMode.Deep);
Transform root = null;
// find root, the one with no parent
for (var i = 0; i < trs.Length; ++i)
{
if (trs[i].parent == null)
{
root = trs[i];
break;
}
}
Export(path, trs, root);
}
}
void OnGUI ()
{
GUILayout.Label("Export Options");
GlTF_Writer.binary = GUILayout.Toggle(GlTF_Writer.binary, "Binary GlTF");
if (GlTF_Writer.binary)
{
GlTF_Writer.b3dm = GUILayout.Toggle(GlTF_Writer.b3dm, "B3dm");
}
else
{
GlTF_Writer.b3dm = false;
}
copyShaders = GUILayout.Toggle(copyShaders, "Copy shaders");
presetAsset = EditorGUILayout.ObjectField("Preset file", presetAsset, typeof(UnityEngine.TextAsset), false) as UnityEngine.TextAsset;
rtcScript = EditorGUILayout.ObjectField("Cesium RTC Callback", rtcScript, typeof(MonoScript), false) as MonoScript;
rotScript = EditorGUILayout.ObjectField("Rotation Callback", rotScript, typeof(MonoScript), false) as MonoScript;
if (rtcScript != null)
{
var name = typeof(RTCCallback).FullName;
var ci = rtcScript.GetClass().GetInterface(name);
if (ci == null)
{
rtcScript = null;
}
}
if (rotScript != null)
{
var name = typeof(RotationCallback).FullName;
var ci = rotScript.GetClass().GetInterface(name);
if (ci == null)
{
rotScript = null;
}
}
if (GUILayout.Button("Export"))
{
OnWizardCreate();
}
}
public static BoundsDouble Export(string path, Transform[] trs, Transform root)
{
double minHeight = 0, maxHeight = 0;
return Export(path, trs, root, out minHeight, out maxHeight);
}
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();
List<GlTF_Skin> skins = new List<GlTF_Skin>();
// 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);
}
GlTF_Accessor boneIndexAccessor = null;
GlTF_Accessor boneWeightAccessor = null;
if (m.boneWeights.Length > 0) {
boneIndexAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "joint"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
boneIndexAccessor.bufferView = GlTF_Writer.vec4BufferView;
GlTF_Writer.accessors.Add (boneIndexAccessor);
boneWeightAccessor = new GlTF_Accessor(GlTF_Accessor.GetNameFromObject(m, "weight"), GlTF_Accessor.Type.VEC4, GlTF_Accessor.ComponentType.FLOAT);
boneWeightAccessor.bufferView = GlTF_Writer.vec4BufferView;
GlTF_Writer.accessors.Add (boneWeightAccessor);
}
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;
attributes.boneIndexAccessor = boneIndexAccessor;
attributes.boneWeightAccessor = boneWeightAccessor;
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;
bool anim = boneIndexAccessor != null && boneWeightAccessor != null && m.bindposes.Length > 0;
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["*"];
}
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);
}
if (boneIndexAccessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "joint";
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tParam.semantic = GlTF_Technique.Semantic.JOINT;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_joint";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
if (boneWeightAccessor != null)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "weight";
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tParam.semantic = GlTF_Technique.Semantic.WEIGHT;
tech.parameters.Add(tParam);
tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_weight";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
}
tech.AddDefaultUniforms(writer.RTCCenter != null);
GlTF_Writer.techniques.Add (techName, tech);
GlTF_Technique.Uniform tUni;
if (m.bindposes.Length > 0)
{
tParam = new GlTF_Technique.Parameter();
tParam.name = "jointMat";
tParam.type = GlTF_Technique.Type.FLOAT_MAT4;
tParam.semantic = GlTF_Technique.Semantic.JOINTMATRIX;
tParam.count = m.bindposes.Length;
tech.parameters.Add(tParam);
tUni = new GlTF_Technique.Uniform();
tUni.name = "u_jointMat";
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
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);
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, anim);
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);
}
else
{
if (anim)
{
// check if previous technique creation contains anim
var tech = GlTF_Writer.techniques[techName];
bool jointFound = false;
bool weightFound = false;
bool jointMatFound = false;
foreach (var param in tech.parameters)
{
if (param.name == "joint")
{
jointFound = true;
}
else if (param.name == "weight")
{
weightFound = true;
}
else if (param.name == "jointMat")
{
jointMatFound = true;
}
}
var prog = GlTF_Writer.programs.Find(p => p.name == tech.program);
Action<GlTF_Technique.Attribute> injectAttr = (tAttr) => {
if (prog != null && prog.attributes.Find(attr => attr == tAttr.name) == null)
{
prog.attributes.Add(tAttr.name);
}
};
if (!jointFound)
{
var tParam = new GlTF_Technique.Parameter();
tParam.name = "joint";
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tParam.semantic = GlTF_Technique.Semantic.JOINT;
tech.parameters.Add(tParam);
var tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_joint";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
injectAttr(tAttr);
}
if (!weightFound)
{
var tParam = new GlTF_Technique.Parameter();
tParam.name = "weight";
tParam.type = GlTF_Technique.Type.FLOAT_VEC4;
tParam.semantic = GlTF_Technique.Semantic.WEIGHT;
tech.parameters.Add(tParam);
var tAttr = new GlTF_Technique.Attribute();
tAttr.name = "a_weight";
tAttr.param = tParam.name;
tech.attributes.Add(tAttr);
injectAttr(tAttr);
}
if (!jointMatFound)
{
var tParam = new GlTF_Technique.Parameter();
tParam.name = "jointMat";
tParam.type = GlTF_Technique.Type.FLOAT_MAT4;
tParam.semantic = GlTF_Technique.Semantic.JOINTMATRIX;
tParam.count = m.bindposes.Length;
tech.parameters.Add(tParam);
var tUni = new GlTF_Technique.Uniform();
tUni.name = "u_jointMat";
tUni.param = tParam.name;
tech.uniforms.Add(tUni);
}
//check shader type
var vs = GlTF_Writer.shaders.Find(sh => sh.name == prog.vertexShader);
if (vs != null)
{
vs.uri = preset.GetVertexShader(s.name, anim);
}
}
}
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);
var val = new GlTF_Material.StringValue();
val.name = pName;
string texName = null;
if (t != null) {
texName = GlTF_Texture.GetNameFromObject(t);
val.value = texName;
} else {
val.value = "";
}
material.values.Add(val);
if (t != null)
{
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();
anim.Populate (clips[i], tr);
GlTF_Writer.animations.Add (anim);
}
}
// next, build hierarchy of nodes
GlTF_Node node = new GlTF_Node();
var smr = tr.GetComponent<SkinnedMeshRenderer>();
if (smr != null)
{
List<Transform> skeletons = new List<Transform>();
var skin = new GlTF_Skin();
skin.Populate(smr, skeletons);
GlTF_Writer.skins.Add(skin);
node.skinName = skin.name;
skins.Add(skin);
foreach (var st in skeletons) {
node.skeletonNames.Add(GlTF_Node.GetNameFromObject(st));
}
}
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;
// do not set if has animation, will be modified by skin transforms
if (smr == null)
{
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);
}
// set joint name property on skinned node
if (skins.Count > 0) {
foreach (var skin in skins) {
foreach (var boneName in skin.boneNames) {
foreach (var node in GlTF_Writer.nodes) {
if (node.name == boneName) {
node.jointName = boneName;
}
}
}
}
}
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;
}
static string toGlTFname(string name)
{
// remove spaces and illegal chars, replace with underscores
string correctString = name.Replace(" ", "_");
// make sure it doesn't start with a number
return correctString;
}