in AssImpContext.BuildMatrix the following code is incorrect:

Matrix4x4 xRot = Matrix4x4.FromRotationX(m_xAxisRotation * (float) (180.0d / 
Math.PI));
Matrix4x4 yRot = Matrix4x4.FromRotationY(m_yAxisRotation * (float) (180.0d / 
Math.PI));
Matrix4x4 zRot = Matrix4x4.FromRotationZ(m_zAxisRotation * (float) (180.0d / 
Math.PI));

multiplying by 180/pi is the conversion from radians to degrees but in this 
case its supposed to be converting from degrees to radians.

See
http://en.wikipedia.org/wiki/Radian#Conversion_between_radians_and_degrees

So the * needs to be changed to / or the fraction needs to be inverted to pi/180

This only affects anyone actually setting the build time transformations 
otherwise everything is 0 and there is no difference.

Hi, looking at the code and documentation of aiGetMaterialTexture in assimp 
C++, It seems that wrapMode is actually an array of TextureWrapMode (one for U, 
one for V) instead of a single value, but I have not seen this handle this way 
in Assimp.NET. Possible bug/memory trashing?

Please provide any additional information below.

Within a c# library project (XNA library project to be exact) I am using 
assimpNet.dll and it always crashes saying that it can't find Assimp32.dll

Assimp32.dll is in the same file location as the assimpNet.dll and in the same 
location as the build output folder, as well as output where the main .exe is 
built that references the library.

Where does it want me to put it? 

In the error you will also notice references to folders that are not part of my 
folder structure at all (Nicolas is not part of my User list).

This is the exact error:

Error   37  Building content threw AssimpException: Error loading unmanaged 
library from path: Assimp32.dll, see inner exception for details.
The specified module could not be found. (Exception from HRESULT: 0x8007007E)
   at Assimp.Unmanaged.AssimpLibraryImplementation.LoadLibrary(String path) in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\Unmanaged\AssimpLibrary.cs:line 1164
   at Assimp.Unmanaged.AssimpLibrary.LoadLibrary(String libPath) in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\Unmanaged\AssimpLibrary.cs:line 111
   at Assimp.Unmanaged.AssimpLibrary.LoadLibrary(String lib32Path, String lib64Path) in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\Unmanaged\AssimpLibrary.cs:line 124
   at Assimp.Unmanaged.AssimpLibrary.LoadLibrary() in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\Unmanaged\AssimpLibrary.cs:line 97
   at Assimp.Unmanaged.AssimpLibrary.EnableVerboseLogging(Boolean enable) in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\Unmanaged\AssimpLibrary.cs:line 343
   at Assimp.AssimpImporter.PrepareImport() in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\AssimpImporter.cs:line 930
   at Assimp.AssimpImporter.ImportFile(String file, PostProcessSteps postProcessFlags) in C:\Users\Nicholas\Documents\Visual Studio 2010\Projects\AssimpNet\AssimpNet\AssimpImporter.cs:line 284
   at ModelAnimationPipeline.ModelAnimationImporterFbx.Import(String filename, ContentImporterContext context) in C:\Users\Joshua\Desktop\Work\SneakyPants3DStuff\AndAgain\TheGreatAlienEscape\src\ModelAnimationPipeline\ModelAnimationImporter.cs:line 38
   at Microsoft.Xna.Framework.Content.Pipeline.ContentImporter`1.Microsoft.Xna.Framework.Content.Pipeline.IContentImporter.Import(String filename, ContentImporterContext context)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.ImportAssetDirectly(BuildItem item, String importerName)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.ImportAsset(BuildItem item)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.BuildAssetWorker(BuildItem item)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.BuildAsset(BuildItem item)
   at Microsoft.Xna.Framework.Content.Pipeline.BuildCoordinator.RunTheBuild()
   at Microsoft.Xna.Framework.Content.Pipeline.Tasks.BuildContent.RemoteProxy.RunTheBuild(BuildCoordinatorSettings settings, TimestampCache timestampCache, ITaskItem[] sourceAssets, String[]& outputContent, String[]& rebuiltContent, String[]& intermediates, Dictionary`2& dependencyTimestamps, KeyValuePair`2[]& warnings)
    Inner exception: FileNotFoundException: The specified module could not be found. (Exception from HRESULT: 0x8007007E)   C:\Users\Joshua\Desktop\Work\SneakyPants3DStuff\AndAgain\TheGreatAlienEscape\src\ProjectSneakyGame\ProjectSneakyGameContent\NPC2.fbx    ProjectSneakyGame

Occurring when reading texel data for non-compressed textures:

MemoryHelper.FromNativeArray<Texel>(nativeValue.Data, size);

What steps will reproduce the problem?
1. Calling importer.ImportFile(path.dae), importer is AssimpContext class
2. I think that it needs to be larger model (> 10 MB)
3. I've tried to reexport model in Maya/3ds Max, still crashes

What version of the product are you using? On what operating system?
I'm using newest version (3.1.1) on Windows 8.1

Please provide any additional information below.
Smaller ones are working just fine (up to 4 MB)
It just crashes without any exception.
There is dl link to one of the model which crashes 
https://mega.co.nz/#!J8hGiRzZ!94KRUIBxem-cGHgMpFZsQy1OymrzX2xt5AeNuBL2n2k

What steps will reproduce the problem?
1. Load any model with AssimpContext to Assimp.Scene
2. Get any valid scene mesh
3. Try to load mesh indices with GetUnsignedIndices() to an array
4. Get null instead

OS Windows 8.1, Assimp .Net version 3.3.1.0

According to source file, it seems that the method just misses "return" on 
successful execution.

[deleted issue]

What steps will reproduce the problem?
1. Importing Assimp32.dll or Assimp64.dll in vs2010 .net4 Client/Full 
2.Just importing assimpnet.dll crashes program in vb.net and wpf using 
winformshost 
3.

What is the expected output? What do you see instead?
Error refers to the fact that reference is unsuccessull because the file is not 
com visible or unaccessible.

"{"Could not load file or assembly 'AssimpNet, Version=2.1.2.1, 
Culture=neutral, PublicKeyToken=0d51b391f59f42a6' or one of its dependencies. 
An attempt was made to load a program with an incorrect format."}"

What version of the product are you using? On what operating system?
Win 7 62 bit VS 2010 Professional

Please provide any additional information below.

What steps will reproduce the problem?
1. implement example from getting started wiki
2. use mono on linux, with xamarin studio and nuget package of assimp-net
3. run example application -> crash

What is the expected output? What do you see instead?

the application crashes because the assimp library is not named assimp64 on 
linux. 



What version of the product are you using? On what operating system?

nuget package of assimp-net. also copied dozens of assimp libraries from latest 
c++ assimp version



Please provide any additional information below.

changing the name has no effect, it seems like the loadlibrary call is 
searching in a wrong directory


i attached my error log

Reminder to get the exporter up and running

What steps will reproduce the problem?
1. Get the source using SVN
2. Load the solution and try compiling it.

What is the expected output? What do you see instead?
Build succeeds. Compiled dll.
I see the error message box pops up and the build fails.


What version of the product are you using? On what operating system?
Latest source from the trunk.
Windows XP SP3


Please provide any additional information below.
When tried compiling without the Tesla.Interop.Generator.exe step I get the 
dll, but when using it the execution eventually goes into one of the 
InternalInterop functions (ReadInline) which just throws exception. Is this the 
intent? I really hoped to use the new version... :(

Reminder to move log streams from the importer to a singleton. Its the only 
reason we're locking the importers when a model is loaded. Turning verbose 
logging/attaching log streams should be global options. This should make the 
library friendlier to multithreaded model loading.

What steps will reproduce the problem?
1. Open a FileStream to scenes/fenris.lws
2. Create a new AssimpImporter and call ImportFileFromStream(stream, ".lws")
3. Crash due to AssimpException

What is the expected output? What do you see instead?
Expected output would be a valid scene just like you get by using the 
ImportFile method instead. However, ImportFileFromStream is unable to resolve 
the external file dependencies to the referenced LWO files. These files contain 
the actual geometry in the scene and without them no geometry is ever loaded.

What version of the product are you using? On what operating system?
Assimp.Net 3.1

Please provide any additional information below.
I didn't find any way to supply custom file handling to Assimp to resolve those 
external file dependencies. There is a IOSystem class in Assimp, which is 
supposed to be used for that, but this doesn't seem to be exposed in Assimp.Net.

I try to implement export to .OBJ format. My material has diffuse textures, and 
I do the following:

TextureSlot t = new TextureSlot();
t.FilePath = dst_texture_file_name;
t.TextureType = TextureType.Diffuse;
t.TextureIndex = 0;

assimp_material.TextureDiffuse = t;

After that, assimp_material.TextureDiffuse.FilePath remains null, 
assimp_material.HasTextureDiffuse continues to show false.

Expected output is 'map_Kd lenna.tga' string it resulting .OBJ file, but it is 
missing.

I use version 3.3.1 on Windows 7.

This is C++ code of assimp:

aiString s;
if(AI_SUCCESS == mat->Get(AI_MATKEY_TEXTURE_DIFFUSE(0),s)) {
    mOutputMat << "map_kd " << s.data << endl;
}

Look like all is OK there. Something is wrong in C#. Thanks.

When using the library on Mac OSX, most things will fail because the library 
tries to PInvoke to libdl.so, which does not exist on OSX.  On OSX, dload() and 
friends are provided by libSystem.B.dylib.

I've attached a patch that adds the necessary logic.

I've also attached some changes that make the build system and unit tests pass 
on OSX.  The primary changes are using Path.Combine to concatenate path 
fragments rather than assuming any particular character, and the introduction 
of a silly little bash-batch polyglot application to ensure that 
AssimpNet.Interop.Generator.exe is invoked via mono.

            Dim mdl As Scene = Nothing
            Dim ac As New AssimpContext
            Dim channelIndicies As New Dictionary(Of Material, Integer)

            ac.SetConfig(New Configs.NormalSmoothingAngleConfig(66.0F))
            mdl = ac.ImportFile(fileName, PostProcessPreset.TargetRealTimeMaximumQuality Or PostProcessSteps.Triangulate)

            Dim formatID As String = ""
            Dim myExt As String = Path.GetExtension(fileName).ToLower.Substring(1)
            For Each efd As ExportFormatDescription In ac.GetSupportedExportFormats
                If myExt = efd.FileExtension Then
                    formatID = efd.FormatId
                    Exit For
                End If
            Next

            ac.ExportFile(mdl, fileName, formatID, PostProcessPreset.TargetRealTimeMaximumQuality)

I was using Assimp 2.x for .net that was provided in the assimp project ( not 
your AssimpNet wrapper ) , and i decided to move to assimp 3 and use your 
wrapper :)

After i finished porting (very easy thankfully) , i noticed that skinned meshes 
were completely wrong ( Note that they used to work fine before ). The strange 
thing was that not all boned meshes were wrong.

After investigation i found that the problem was in the Matrix4x4.Decompose() 
function for matrices. If i used DecomposeNoScaling() and assume scaling 1 the 
meshes suddenly  improved a lot , but still had errors.

The solutions i found was to copy the matrix in a SharpDX matrix and  use that 
decomposing and everything works fine now.

I should also mention that i use DirectX with the 
PostProcessSteps.MakeLeftHanded enabled ...this will mirror matrices.. i don't 
know if this causes any problems with the decompose function but it's a 
possibility.

the revision i used is r45

Thanks :)

Need to tidy up a few things with the AssimpLibrary DLL loading/proc addressing 
to play nice with Mono out of the box.

What steps will reproduce the problem?
1. build sample against current opentk
2. run program
3. stack overflow results

What is the expected output? What do you see instead?
expect rotating duck, get stack overflow after a flash of the duck

What version of the product are you using? On what operating system?
trunk version on Win8.1 compiled with VS2013 express for desktop

Please provide any additional information below.

What steps will reproduce the problem?
1. Get a model with a bump/normal map.
2. Load it and observe that the normal map is of 'Height' type, rather than 
'Normals'. Note that 'Height' type should contain a displacement map if any.

What is the expected output? What do you see instead?
Expect normal maps to be loaded as Normals textures.
Normal maps are loaded as Height textures.


What version of the product are you using? On what operating system?
Well, the one before the latest. Cannot get the latest to work at the moment 
due to the Tesla problem.


Please provide any additional information below.
Attaching sample DAE model on which you can easily repro the issue.

What steps will reproduce the problem?
1. Change target framework to .NET 3.5
2. Change reference to IntPtr.Add to Marshal.ReadIntPtr
3. Compile AssimpNet
3. Create a .NET 3.5 testbed application
4. Load any 3D model.

What is the expected output? What do you see instead?
The expected output is the model is loaded successfully.  Instead, I get a 
System.NullReferenceException which occurs in Material.cs line 411.  The 
properties variable is null when it tries to access the Length property.

What version of the product are you using? On what operating system?
2.1.2 Refresh

Please provide any additional information below.
Like I stated in the steps to reproduce, I had to change any reference to 
IntPtr.Add to Marshal.ReadIntPtr.  Obviously when I compile under .NET 4.0 for 
AssimpNet and the testbed application, everything works fine.  It's only when I 
try and compile under .NET 3.5.

Port the code for this project from Tesla Engine (v2) so it can be compiled 
alongside AssimpNet. Have gotten a bug report when compiling AssimpNet for a 
platform that doesn't supported .NET 4.5

It seems that lib is ignoring config settings and whatever I try to export 
model I got flat version (no real vertex normals).

I've tried file to file conversion and blob to file (code below).

NormalSmoothingAngleConfig config = new NormalSmoothingAngleConfig(40.0f);

importer.SetConfig(config);

ExportDataBlob blob = importer.ConvertFromFileToBlob(fileName, 
"obj",PostProcessSteps.GenerateSmoothNormals /*with or without doesn't change 
anything*/);

Hello,

I downloaded the Source via SVN, opend the Projekt in VS2012 Express and tried 
to compile the Sources.

Projekt AssimpNet:
AssimpLibrary.cs arround Line 1471
private void PreloadFunctions() {...}
in that function is following line:
GetFunction(funcType.GetCustomAttribute<AssimpFunctionNameAttribute>().Unmanaged
FunctionName, funcType);

The Error is like (translated from German):
'System.Type' has no defination for 'GetCustomAttribute', and can not find a 
Method 'GetCustomAttribute' which accepts as first parameter 'System.Type'.

If I check:
http://msdn.microsoft.com/en-us/library/system.type.getcustomattributes(v=vs.110
).aspx
- that is correct.

String fileName = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "AC14-FZK-Haus.ifc");

        AssimpContext importer = new AssimpContext();

        m_model = importer.ImportFile(fileName, PostProcessSteps.None);

using System;
using System.IO;
using System.Reflection;
using Assimp;
using Assimp.Configs;
namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
           
            String fileName = "F:/rst_basic_sample_project.ifc";
            
            AssimpContext importer = new AssimpContext();
              
            Scene model = importer.ImportFile(fileName);

            Console.WriteLine("no. of meshes in the model is: " + model.MeshCount);
           
            importer.Dispose();

        }
    }
}

Hi there!
I planning to use Assimp.Net for SharpDX and I was wondering if Assimp.net 
could be migrated to a more distributed/community friendly source system like 
git? (Just in case I would find some missing features/bugs/enhancement/whatever)
Greetings

This is not really an issue, more of an FYI, about v3.1.1

I committed a few things on the assimp repo (mostly about FBX and metadata) and 
wherever appropriate i did the necessary additions in my assimpNet fork in 
github.

You can see them here and use whatever you find usefull.
https://github.com/VirusFree/AssimpNet/commits/master

A problem i found and was not able to fix correctly,but had to result in an 
ugly workaround, was with aistrings.. i think this is a .net marshaling bug 
were it would only fetch a byte from the buffer and leave the rest zero.
(even though when checking with the memory viewer in visual studio i could see 
the source/native buffer was ok)

Anyway, this is just an FYI and if you need any help with moving to v3.1.1 let 
me know :)

|Information| - ASSIMP - Info,  T10160: Import root directory is './'
|Error| - ASSIMP - Error, T10160: OBJ: Unable to locate material file wall.mtl

Hello again,

I have been working a little on assimp.net for the needs of my project and i 
made it for AnyCpu , because it's not convenient to have a project with 50 
AnyCpu dlls and one that it not..

It basically has the native assimp dll under a x86 and a x64 folder and chooses 
the appropriate file when loading is necessary.

The paths can also be modified by the user (at runtime but before using 
assimp.net ) , so the user can have his own x86,x64 folders and have the 
approriate native assimp dlls inside.

I attached a patch for this. ( its based on r63 , so no conflicts )

Thank you :)

What steps will reproduce the problem?
1. Copy the obj and the mtl in the same directory
2. Load the model using Assimp.Net

What is the expected output? What do you see instead?
Load without error

What version of the product are you using? On what operating system?
2.1.2

Please provide any additional information below.
It seems that the error comes from Assimp library. It has been fixed in the 
latest version.