private static Ai.Material ConvertAiMaterialFromMaterial(Material material, TextureSet textures)
{
var aiMaterial = new Ai.Material
{
Name = material.Name,
ColorDiffuse = material.DiffuseColor.ToAssimp(),
ColorAmbient = material.AmbientColor.ToAssimp(),
ColorSpecular = material.SpecularColor.ToAssimp(),
ColorEmissive = material.EmissionColor.ToAssimp(),
Shininess = material.Shininess,
ShadingMode = Ai.ShadingMode.Phong,
};
ConvertMaterialTexture(material.Diffuse, Ai.TextureType.Diffuse);
ConvertMaterialTexture(material.Ambient, Ai.TextureType.Ambient);
ConvertMaterialTexture(material.Normal, Ai.TextureType.Normals);
ConvertMaterialTexture(material.Specular, Ai.TextureType.Specular);
ConvertMaterialTexture(material.Reflection, Ai.TextureType.Reflection);
ConvertMaterialTexture(material.SpecularPower, Ai.TextureType.Shininess);
void ConvertMaterialTexture(MaterialTexture materialTexture, Ai.TextureType textureType)
{
if (materialTexture.IsActive)
{
var texture = ConvertTextureSlotFromTextureId(materialTexture.TextureId, textureType, textures);
aiMaterial.AddMaterialTexture(ref texture);
}
}
return(aiMaterial);
}
public void ExportMesh(GameObject go, string path)
{
Vector3 lastPos = go.transform.position;
go.transform.position = Vector3.zero;
Scene scene = new Scene();
List <string> sameNames = new List <string>();
List <Transform> children = new List <Transform>();
Dictionary <Transform, Node> nodesByTransform = new Dictionary <Transform, Node>();
GetAllChildren(children, go.transform);
foreach (Transform child in children)
{
string nname = child.name;
if (sameNames.Contains(nname))
{
nname += "_";
}
else
{
sameNames.Add(nname);
}
Node node = new Node(nname);
UnityEngine.Matrix4x4 m = child.localToWorldMatrix.inverse;
node.Transform = new Assimp.Matrix4x4(
m.m00, m.m01, m.m02, m.m03,
m.m10, m.m11, m.m12, m.m13,
m.m20, m.m21, m.m22, m.m23,
m.m30, m.m31, m.m32, m.m33
);
nodesByTransform.Add(child, node);
if (child == go.transform)
{
Node rootNode = new Node(Path.GetFileNameWithoutExtension(path));
rootNode.Children.Add(node);
scene.RootNode = rootNode;
}
}
foreach (Transform child in children)
{
foreach (Transform c in child)
{
if (child == go.transform)
{
scene.RootNode.Children.Add(nodesByTransform[c]);
}
else
{
nodesByTransform[child].Children.Add(nodesByTransform[c]);
}
}
}
sameNames.Clear();
MeshFilter[] mfs = go.GetComponentsInChildren <MeshFilter>();
SkinnedMeshRenderer[] smrs = go.GetComponentsInChildren <SkinnedMeshRenderer>();
int meshIndex = 0;
foreach (var mf in mfs)
{
PdxShape shape = mf.GetComponent <PdxShape>();
Assimp.Material mat = new Assimp.Material();
mat.Name = shape.shader;
TextureSlot diff = new TextureSlot();
diff.FilePath = shape.diffuse;
diff.TextureType = TextureType.Diffuse;
diff.UVIndex = 0;
//mat.TextureDiffuse = diff;
mat.AddMaterialTexture(ref diff);
TextureSlot norm = new TextureSlot();
norm.FilePath = shape.normal;
norm.TextureType = TextureType.Normals;
norm.UVIndex = 0;
//mat.TextureNormal = norm;
mat.AddMaterialTexture(ref norm);
TextureSlot spec = new TextureSlot();
spec.FilePath = shape.specular;
spec.TextureType = TextureType.Specular;
spec.UVIndex = 0;
//mat.TextureSpecular = spec;
mat.AddMaterialTexture(ref spec);
scene.Materials.Add(mat);
Assimp.Mesh am = null;
am = FromUnityMesh(mf.mesh, "pShape" + meshIndex, go.transform);
if (sameNames.Contains(am.Name))
{
am.Name += "_";
}
else
{
sameNames.Add(am.Name);
}
am.MaterialIndex = meshIndex;
scene.Meshes.Add(am);
nodesByTransform[mf.transform].MeshIndices.Add(meshIndex);
meshIndex++;
}
foreach (var smr in smrs)
{
PdxShape shape = smr.GetComponent <PdxShape>();
Assimp.Material mat = new Assimp.Material();
mat.Name = shape.shader;
TextureSlot diff = new TextureSlot();
diff.FilePath = shape.diffuse;
diff.TextureType = TextureType.Diffuse;
diff.UVIndex = 0;
//mat.TextureDiffuse = diff;
mat.AddMaterialTexture(ref diff);
TextureSlot norm = new TextureSlot();
norm.FilePath = shape.normal;
norm.TextureType = TextureType.Normals;
norm.UVIndex = 0;
//mat.TextureNormal = norm;
mat.AddMaterialTexture(ref norm);
TextureSlot spec = new TextureSlot();
spec.FilePath = shape.specular;
spec.TextureType = TextureType.Specular;
spec.UVIndex = 0;
//mat.TextureSpecular = spec;
mat.AddMaterialTexture(ref spec);
scene.Materials.Add(mat);
Assimp.Mesh am = null;
UnityEngine.Mesh baked = new UnityEngine.Mesh();
smr.BakeMesh(baked);
am = FromUnityMesh(baked /*smr.sharedMesh*/, "pShape" + meshIndex, go.transform);
if (sameNames.Contains(am.Name))
{
am.Name += "_";
}
else
{
sameNames.Add(am.Name);
}
am.MaterialIndex = meshIndex;
scene.Meshes.Add(am);
nodesByTransform[smr.transform].MeshIndices.Add(meshIndex);
meshIndex++;
}
AssimpContext context = new AssimpContext();
bool result = context.ExportFile(scene, path, "obj", PostProcessSteps.MakeLeftHanded | PostProcessSteps.FlipWindingOrder);
context.Dispose();
go.transform.position = lastPos;
if (result)
{
EditorController.instance.Status("Object saved as " + path);
}
else
{
EditorController.instance.Status("Export failed :(", 2);
}
}