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open ASSet IMPort library(ASSIMP) is a portable Open Source library to import various well-known 3D model formats

0
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1answer
34 views

Skeletal animation: unexpected quarternion values

I'm following ThinMatrix's skeletal animation tutorial and his custom written Collada parser is deriving a different rotation quaternion from each keyframe matrix than the Assimp importer library does....
0
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1answer
46 views

OpenGL is not drawing model with more than one material

I have model created in Blender that have 3 UV Maps, 3 materials and each material has texture. Below you can see it. Also I have OpenGL application that draw this model. Application is working ...
0
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1answer
33 views

Exporting a simple mesh from Blender for reading in Assimp

I'm trying to create some simple assets for using in my rendering engine. What I'm trying to do is to generate simple low poly models and then importing them into my application using Assimp. I can ...
0
votes
0answers
73 views

Why is Assimp mOffsetMatrix different from inverse bind pose

I am doing skeletal animation and my model gets distorted. I suspect it was because of the inverse bind pose, which I calculate by concatenating all the mTransformation starting from scene->rootNode ...
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0answers
36 views

assimp incorrect / wrong bone offset matrix

https://youtu.be/yyKQ-W2zxi4 This is youtube url showing what problem I have faced. I am currently using Assimp and DirectX 9.0 sdk for implementing skinned mesh animation I understand the pre ...
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0answers
34 views

How to implement materials with variable numbers of textures in Assimp?

When importing a mesh, Assimp loads its material, which stores a list of textures of different types; for the sake of this question, let's say I only care about these types: ...
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0answers
69 views

importing bone animation keyframes with assimp

I'm writing a simple 3d engine with Direct3D11 and I'm into the processo of importing a rigged and animated model into my application with Assimp. I succesfully managed to import a static model and a ...
1
vote
0answers
145 views

ASSIMP aiNode->mMeshes understanding

I'm trying to use ASSIMP to load an fbx file with a skeleton and animations, but I'm stuck on something I'm misunderstanding and struggling to see it. I've attached 2 images, one of the fbx file as ...
0
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1answer
100 views

ASSIMP library imports wrong number of bones from COLLADA file

I have a COLLADA(.dae) file exported from Blender, also I have program that read all data from structure generated with Assimp and I want to translate all data in more readable format. Problem appears ...
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0answers
164 views

3D Triangle-Line Collision Detection

I am having trouble testing collision detection with C++ and OpenGL. My current implementation is to have a bounding sphere, and if the player is inside the bounding sphere, then I would test the ...
0
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0answers
59 views
0
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0answers
28 views

Calculating Bone transformation in Ogre3d, How to get the local bone coordinates

I'm using ogreassimp converter that convertes an FBX file and make a skeletal with bones.. but right now I have an animated mesh that does rotation relative to another object.. The first object ...
0
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0answers
21 views

Md5mesh materials

I use blender to create and rigging models then export to MD5 format and import by Assimp , my model has a normal and specular maps and the exported md5mesh file has an attribute shader which has the ...
0
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0answers
45 views

aiString to wstring conversation from assimp

Im in Assimp and need a conversation. How can I convert aiString to wstring. Any help would be appreciated. thank you
1
vote
1answer
199 views

Program compiled with assimp will not start

I have recently updated my game engine source code to use the visual studio(2017) vc141 toolkit. I am using Assimp 3.1.1 for model loading. The project compiles and links, and the appropriate dll's ...
1
vote
1answer
133 views

C++ - Assimp - OpenGL vertex data feed problem

I'm getting a very weird problem where OpenGL doesn't use the hardware to render anything, so I get just a cleared blank screen. Here's some code: ...
2
votes
0answers
50 views

Skeletal Animation: No initial bone rotation

I am currently trying to implement animations in my game. I am having an issue where the bones do not rotate properly. In my program, I apply an inverse bind pose to each bone to move them to bone ...
0
votes
0answers
35 views

Slow rendering after applying texture coordinate

I'm using OpenTK and Assimp.Net libraries to display 3D objects in C#. Also my rendering technique is VBO! When I set a texture to my object, the texture will appears in wrong place like this : ...
0
votes
1answer
90 views

Errors attempting to use Assimp in DirectX 12

I am trying to load a 3D model within a DirectX 12 project by means of Assimp, but even when I write only the importer function, I get errors I can not fix. How do I fix this? Here is my code: ...
1
vote
1answer
337 views

Incomplete rendering using OpenTK (VBO)

Using Assimp.net I did load obj file. assimp returns back Mesh object that contains vertexes, normals, faces, colors and texture. when I don't use VBO the object will load complete. like this : But ...
0
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1answer
232 views

C++ Assimp - Models incorretly drawn/loaded

I've followed a tutorial about using Assimp to load models, but the loaded models are incorrectly drawn: These should be a spheres I've checked my code multiple times but I can't seem to find what I ...
0
votes
1answer
212 views

Models loaded with Assimp have messed up UVs/normals

I've been trying to use Assimp to load models and so far I got it to load a few obj models, but all of them have messed up UVs (and maybe normals). Here's what it looks like : I tried several ...
1
vote
1answer
72 views

Best format for model with double UV sets

I'd like to use first UV set as wrapping (or when some faces cover another on UV) diffuse color map and second UV set as baked ambient occlusion (packed to islands) ...
1
vote
2answers
561 views

FBX animation works in 3DSMax but not with Assimp [closed]

I have an FBX file that represent a plane with an animation of the gear opening. In my editor 3DSMax or in the Unity editor, the file and animation seem good, but when I use Open 3D Model(the official ...
0
votes
1answer
304 views

Loading non-skeletal animation to opengl via assimp

I'm a newbie in assimp and openGL. I'm trying to import .fbx or .dae formatted file to openGL via assimp. Importing skeletal animation was kind of easy. Lots of introductions and sample projects ...
1
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0answers
377 views

trouble getting correct transforms for multiple meshes from assimp importer

I have had excellent success in extracting almost everything i need from a collada file that i imported with assimp, however I am struggling to get the correct transforms for each mesh in the file. ...
1
vote
0answers
265 views

AssImp Skeletal Animation Issues [closed]

Tried creating an animated mesh but I render it, it comes up as a flat mesh that moves with the camera. Followed the OGL Animation tutorial here (http://www.ogldev.org/www/tutorial38/tutorial38.html). ...
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0answers
97 views

Skin Mesh Animation Shader Issue

I'm having troubles with properly animating a skin mesh from an .fbx file. I feel like the issue is in the shader, but not sure what is going on. All I know is that I am getting unexpected results ...
2
votes
1answer
372 views

ASSIMP OpenGL collada and Skeletal Animation

first of all i would like to say that i read everything out there and still did not figure it out quite yet. In my project i need to implement a skinning technique, but before going there i need to ...
1
vote
0answers
85 views

Updating aiScene in ASSIMP with skeleton data

I am working on a project where I take an unrigged closed mesh, import it using ASSIMP, auto-rig it using the algorithm provided by Ilya Baran and Jovan Popovic and again export it using ASSIMP. I ...
4
votes
1answer
267 views

Mesh's triangles don't move properly during skeletal animation

I've been trying to implement skeletal animation in my engine using this tutorial, and I've been having problems. Using the model they provided, I get results like this: But on some other models, ...
-4
votes
1answer
37 views

m_Entries is undefined [closed]

I am following this tutorial and this guy puts in his code m_Entries and doesn't explain it at all at least I think. So any one who has done skeletal animation show me what he is talking about by ...
0
votes
1answer
89 views

m_BoneMapping is undefined in OpenGL Step By Step Skeletal Animation Tutorial [closed]

I am new to this website I was following this specific tutorial on skeletal animation and I have a good idea on what it is, but when I was following his implementation he used a variable called "...
1
vote
1answer
827 views

Data structure for multiple Textures in materials in assimp

I'm going through assimp documentation regarding materials. Each material can have multiple textures containing various data (color maps, height maps, etc.) and blending data, etc. I'm trying to ...
7
votes
0answers
368 views

How to link assimp lib to universal app

I cannot make assimp object loader work with universal app, and I got the same problem as this one: Assimp and directX12 universal apps I tried the static library approach mentioned in the answer of ...
0
votes
1answer
441 views

Assimp Texture Coords problem

I've got a problem when loading objects using assimp. I did succesfully load vertex data and I am able to draw static mesh (without bones and animations, I've got few bugs there but I'll go back to ...
1
vote
1answer
545 views

Assimp, Blender and model rotating

There is something I can't figure out. I have two models - grass.blend and tower.blend. grass.blend: tower.blend: Note X, Y and Z axises. The problem is that when I load these models using Assimp ...
1
vote
2answers
1k views

ASSIMP transformation hierarchy and animations

I don't fully understand the transformation hierarchy used by ASSIMP. According to the docs (http://assimp.sourceforge.net/lib_html/structai_node.html) an aiNode's transformation is relative to its ...
3
votes
1answer
540 views

Assimp and directX12 universal apps

I started a directX 12 universal app project on visual studios and started coding some stuff to create a physics engine. I was currently working on implmenting Assimp into the engine too load whatever ...
5
votes
1answer
216 views

Set the name of an animation in collada to be used by AssImp

I am using the collada file format to contain my model and animation but when I use AssImp to load the file the name will be empty for the animation. Where is the name for animation set on the collada ...
5
votes
1answer
3k views

Skeletal animation in OpenGL

I'm using Assimp to do skeletal animation in my OpenGL application. I used Blender to export this one-boned model to a COLLADA file: The model has only one bone, called arm bone, that controls the ...
0
votes
1answer
643 views

change position/orientation of a bone using assimp

I have been using assimp to import rigged models and animations. I followed this tutorial for skeletal animation and I have got it done properly. The part that I am trying to do now is to orient a ...
2
votes
1answer
3k views

Skeletal animation with ASSIMP, COLLADA, and glm

I have been trying to learn how to implement skeletal animation (skinning) from COLLADA files using ASSIMP and glm. But after a week of being stuck reading different tutorials and posts I have found ...
4
votes
2answers
3k views

How do I build Assimp with MinGW?

How can I build Assimp with cMake and MinGW? I tried, but I don't get a functioning library... Details of my attempt: I am trying to build the Open Asset Import Library (Assimp) but I have been ...
1
vote
0answers
662 views

How to properly transform vertices for a model loaded using Assimp?

When I try to load a DAE model then vertices are not placed correctly. Here's the code snippet I use to load 3D models using Assimp : ...
1
vote
1answer
620 views

Errors when loading Assimp meshes

I am experiencing some oddities when loading meshes in Assimp. Some models render perfectly, while others are complete jumbles of triangles. Some Example Images: Teapot Correct - Teapot Actual ...
0
votes
1answer
1k views

OBJ Model not being rendered properly in OpenGL ES 2 android app

I have an Android OpenGL ES 2 app that loads an .OBJ model using Assimp and renders the same. The vertices data is stored in a object declared like this : ...
1
vote
0answers
1k views

Assimp - Error loading .obj files

I'm trying to load .obj files in my little game. I decided to use assimp as tool to import those models. But it seems that assimp does not import them correctly. I looked for a simple cube mesh ...
1
vote
2answers
515 views

Convert trianlge mesh to group of Line segments

I have a 3D .OBJ model file, that is loaded in my OpenGL ES 2 android application using Assimp library. All the faces are triangulated. I want to draw the wireframe for my mesh. In OpenGL we have ...
0
votes
1answer
632 views

How to export FBX models to use in SharpDX?

I am trying to export a model from 3ds Max 2014 as a fbx file and use it in my SharpDX driven project. In the SharpDX example solution, there is a project named ...