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- OBJ (or . OBJ) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package. The file format is open and has been adopted by other 3D graphics application vendors. For the most part it is a universally accepted format. The OBJ file format is a simple data-format that represents 3D geometry alone — namely, the position of each vertex, the UV position of each texture coordinate vertex, normals, and the faces that make each polygon defined as a list of vertices, texture vertices, and normals. A typical OBJ file looks like this: # this is a comment # Here is the first vertex, with (x,y,z) coordinates. v 0.123 0.234 0.345 v #Texture coordinates vt #Normals in (x,y,z) form; normals might not be unit. vn #Each face is given by a set of three indices each to the vertex/texture/normal #coordinate array that precedes this. #Hence f 1/1/1 2/2/2 3/3/3 is a triangle having texture coordinates and #normals for those 3 vertices, #and having for the vertex 1 (1/1/1) the vertex 1 from the "v" list, texture coordinate 1 from #the "vt" list, and the normal 1 from the "vn" list; then for the 2nd vertex: #the vertex 2 from the "v" list, texture coordinate 2 from #the "vt" list, and the normal 2 from the "vn" list; for the 3rd vertex: #vertex 3 from the "v" list, texture coordinate 3 from #the "vt" list, and the normal 3 from the "vn" list f v0/vt0/vn0 v1/vt1/vn1 v2/vt2/vn2 f # when there are named polygon groups or materials groups the following # tags appear in the face section, g [group name] usemtl [material name] # the latter matches the named material definitions in the external . mtl file. # Each tag applies to all faces following, until another tag of the same type # appears (therefor, the texture coordinate can be left out, since it is # defined for all faces following, until another tag of the same type # appears). f v0//vn0 v1//vn1 v2//vn2 An OBJ file also supports smoothing parameters to allow for curved objects, and also the possibility to name groups of polygons. It also supports materials by referring to an external MTL material file. OBJ files, due to their list structure, are able to reference vertices, normals, etc either by their absolute (1-indexed) list position, or relatively by using negative indices and counting backwards. However, not all software supports the latter approach, and conversely some software inherently writes only the latter form (due to the convenience of appending elements without needing to recalculate vertex offsets, etc), leading to occasional incompatibilities.
- OBJ est un format de fichier contenant la description d'une géométrie 3D. Il a été défini par la société Wavefront Technologies dans le cadre du développement de son logiciel d'animation Advanced Visualizer. Ce format de fichier est ouvert et a été adopté par d'autres logiciels 3D pour des traitements d'import / export de données. Les formes géométriques peuvent être définies par des polygones ou des surfaces lisses telles que des surfaces rationnelles et non rationnelles.
- OBJ é um formato de arquivos de computador criados para armazenar malhas poligonais tridimensionais.
- OBJ — это формат файлов описания геометрии, разработанный в Wavefront Technologies для их анимационного пакета Advanced Visualizer. Формат файла является открытым и был принят другими разработчиками приложений 3D графики и может быть экспортирован/импортирован в e-Frontier's Poser, Autodesk's Maya, XSI, Blender, MeshLab, Misfit Model 3D, 3D Studio Max и Rhinoceros 3D, Hexagon, Newtek Lightwave, Art of Illusion и т. д. По большей части это общепринятый формат. Формат файлов OBJ — это простой формат данных, который содержит только 3D геометрию, а именно, позицию каждой вершины, связь координат текстуры с вершиной, нормаль для каждой вершины, а также параметры, которые создают полигоны. Загрузка формата OBJ. Загрузка формата OBJ.
- . obj är ett filändelse som används för ett par olika filformat.
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![[RDF Data]](/statics/sw-cube.png)
