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Questions tagged [wavefront]

OBJ (or .OBJ) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package.

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Save large size arrays to file on android

I am creating android application with 3D OpenGL ES view which will consist from 3D models imported from wavefront obj files. A typical Wavefront obj file will contain only triangulated objects and it might look like: v 1.00000 1.00000 0 v 1.00000…
Taks
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Exporting OBJ file from Blender, why are normals for each face vertex the same?

For example I created a sphere in blender, and exported the obj file. I was noticing some issues in my shader, because all the vertex normals for a face are the same. And can see it directly in the .obj file itself, such as portion below, see that…
CptanPanic
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How to standardize scale for meshes

I am comparing 3 different obj files and all 3 have different ranges of vertices. How can I standardize them to all fit on the same coordinate system? For example, a unit in +x direction is +1 for some obj but +0.1 for other obj. Would this be…
joethemow
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How to map metallic texture in .mtl file?

I have a model I must keep in .obj format. It is accompanied by 5 texture maps (Diffuse, Emissive, Normal, occlusion, and metal). I want to reference these textures in the .mtl file but can't seem to find the syntax for that. As of right now, all I…
iby.helmy
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How do I index positions with different normals

I can't seem to have a grasp on OpenGL VAOs and VBOs. I am coding an OBJ Loader from scratch (BTW I am using LWJGL) and I can't seem to get the order of normals correctly. When I look at the OBJ File I notice that there are positions with different…
Ethan Gamat
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Cut-out effect using Image Mask not working for me

I'm not able to resolve this issue in multiple plant models I got from Turbosquid. Specifically, the Petals of the flowers like the one pictured here. Petals appear as rectangles (as per original Geometry) even with Transparency set to a masking…
Akhilesh Joshi
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How I make obj parser to parse for every vertex point a normal to that vertex?

I have a problem with my parser. I want to make it so that it can parse only one normal per one vertex. But I am struggling to do so because there are different variations of the .obj files. For example, if I parse cube.obj, it has only 6 normals…
Zhukov Artem
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I want to know how to set normals with OBJ loader

Comment part of the presentation code ///// It is an internal code, but I do not know how to set the normal. I created an .obj loader with reference to the reference site, but the lighting is strange as shown in the reference image. What is the…
samidare_chan
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Autodesk Forge Reality Capture generated OBJ to 3D Web Viewer simple example sought

Include details about your goal I am using Forge Reality Capture which returns me a URL to a zip file containing the OBJ of my model, and its auxiliary files. I want to provide my users with an extremely simple viewer on a webpage that renders the…
mcgregor94086
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How can I pass a URL of an OBJ file to G.Viewer using GET string syntax?

The problem I have some OBJ and STL 3D model files accessible on the web. My problem is making the files easy for my users to view online. I have tried to copy some pages that have such a web-viewer, but they ask the users to draw and drop local…
mcgregor94086
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PyOpenGL - How load obj file that has color defined in the mtl file

I have two files, drone2.obj and drone2.mtl. I believe the .mtl file uses RGB color codes for the color instead of using .jpg/.png textures. Here's what drone2.obj looks like when I load it with 3D Builder and PyOpenGL: I've read several tutorials(…
Robin Alvarenga
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Java OpenGL / LWJGL Voxel Textures

I'm working on a 3D rendering project following a YouTube tutorial series. I've gotten as far as rendering 3D textured models using OBJ file format. 3D render with model provided by the tutorial: The issue is that when I make my own voxel-based…
Bobnickle_Jr
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OBJ Wavefront file: issues due to face vertex order

I am facing some strange problem with a simple obj-file I created. The obj-file contains 8 vertices which represent the corners of a cuboid-like shape. For each of the vertices I calculate a vertex normal (which I need for rendering). The object…
Concode
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Rendering Wavefront OBJ and associated material MTL using OpenGL

I have these files: sample.obj, sample.mtl and a folder sample containing image jpg. Can somebody give me an example code of opengl texture mapping using above input.
Conmadoi
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How add wavefront file(.obj) to surface3d qml?

I wanna add a obj file(wavefront format) as a point(by a position) in surface3d in qml but i dont know how i do it! i found some solutions but they have some problems, for example i just want use qml , but they use c++ and QCustomItem . i tried to…
H.M
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