Official Open Asset Import Library Repository. Loads 40+ 3D file formats into one unified and clean data structure.
@kimkulling Thanks for your reply, in my case, I only use the embed textures(most time only diffuse texture), I get the texture through Scene::mTexture, my problem was i don't know how to get the index from materials, then get the texture from scene::Textures.
After i made some test, i guess i need to use:
aiString texture_file;
mScenePtr->mMaterials[materialIndex]->Get(AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0), texture_file);
then the "texture_file.data" starting "*" will be the texture index inside scene::Texture.
You can find an example how to do this in the 3MF-Loader
D3DMFImporter, XMLSerializer etc.
I'm mostly interested in obtaining the UV scale. Here's what I have in the .obj:
map_Kd -s 4.000000 4.000000 1.000000 baseColor.png
and here's how I'm trying to extract it:
aiUVTransform uvTransform;
unsigned int max = sizeof(aiUVTransform) / sizeof(ai_real);
if (AI_SUCCESS != aiGetMaterialFloatArray(mat, AI_MATKEY_UVTRANSFORM(aiTextureType_DIFFUSE, 0),
(float*)&uvTransform, &max))
{
std::cout << "Failed to retrieve UV information from material in texture \"" << path
<< "\". Result:" << aiGetMaterialFloatArray(mat, AI_MATKEY_UVTRANSFORM(aiTextureType_DIFFUSE, 0),
(float*)&uvTransform, &max) << '\n';
}
std::cout << "S=" << uvTransform.mScaling.x << ", " << uvTransform.mScaling.y
<< " T=" << uvTransform.mTranslation.x << ", " << uvTransform.mTranslation.y
<< " R=" << uvTransform.mRotation << '\n';
I compiled the master branch from Github and it seems it doesn't detect texture scaling for Wavefront OBJ files at all, only for glTF 2.0, and with a bug: it says
S=30, 30 T=0, 29 R=0. The scaling is correct, except it isn't supposed to have any translation, idk where the "29" comes from:"extensions": {
"KHR_texture_transform": {
"offset": [
0,
0
],
"scale": [
30,
30
],
"texCoord": 0
}
}
Hello, I have a mesh and I was wondering how I could translate my animations into assimp. I have a group of vertices (I assume these would be considered bones) and transformations that can be applied to a group of bones such as scaling, rotation, etc. Is there any suggestion or resource on how I can go about this? I noticed
aiMesh has mAnimMeshes which I believe is just an array of the translated mesh, but docs say its not in use?
Edit: scaling x position x rotation
3 replies
I don't actually understand how to do so, as my program requires assimp.lib and mesh.h, however, assimp.lib doesn't exist.
@tomazos Hopefully my answer on github helped you a little bit.
@GeneRickUsername Which kind of program? Do you want to integrate Assimp into your own application?
And please post your issues
can you help me know why that happened
Find the dll in the bin folder
Hi Im trying to cross-compile ASSIMP for devkitARM for the 3DS. I know this probably isn't a supported thing to do however the main problem I come across is
contrib/zlib/CMakeFiles/zlibstatic.dir/compiler_depend.make:4: *** multiple target patterns. Stop. when I try to compile ASSIMP. However, if I manually go into the zlib directory and run cmake then make it works fine and compiles without multiple target patterns. Anyone here know how to fix this multiple target patterns issue?
And hi
Jsut check the cmake-file in the root folder. there is one switch for using a global zlib
Hello. I'm looking for advice on using the latest version of Assimp with C# in .NET 5.0. I have been able to use 4.x and 5.0.1 with the Nuget.org package called AssimpNet but I wonder if anyone has made an update to target 5.1.x? I tried reaching out to the developer on BitBucket but got no response so I thought I'd ask here just in case. Is anyone currently using Assimp 5.1.x with .NET 5.0?
At this moment, the latest versions are not available.
how do you guys build the viewer?
having issues with fbx files with animations
And you have to keep in mind: the viewer will only work on windows
you can create it via: cmake CMakeLists.txt -DASSIMP_BUILD_ASSIMP_VIEW=ON
This will generate projectfiles for the viewer on windows
Hi, I have the same question as @PiKeyAr, is there someone working on the Assimp .NET wrapper? I'm trying to export files to gltf2, but the gltf2 output in AssimpNet 4.1.0 is not up to the glTF standards and shows errors on opening in https://gltf-viewer.donmccurdy.com/
I have also tried the 5.0.1 beta package, that one works well for the gltf2 exports. But the issue here is that the application crashes after every export. I have tried the AssimpNet wrapper (both 4.1.0 and 5.0.0-beta1) with the newer Assimp releases. But those are not compatible anymore with Assimp, at least not for exporting to gltf2 files, starting from version 5.1.x and up.
I would of course prefer to use the newest version of Assimp with the C# wrapper so have all the latest fixes for gltf2 included. So I am wondering if someone is still working on it / will pick it up and if yes, is there any indication about when we can expect it? Or if it's better to set this idea aside for now and maybe try to pick it some other time.
I have also tried the 5.0.1 beta package, that one works well for the gltf2 exports. But the issue here is that the application crashes after every export. I have tried the AssimpNet wrapper (both 4.1.0 and 5.0.0-beta1) with the newer Assimp releases. But those are not compatible anymore with Assimp, at least not for exporting to gltf2 files, starting from version 5.1.x and up.
I would of course prefer to use the newest version of Assimp with the C# wrapper so have all the latest fixes for gltf2 included. So I am wondering if someone is still working on it / will pick it up and if yes, is there any indication about when we can expect it? Or if it's better to set this idea aside for now and maybe try to pick it some other time.