![]() Correct this by choosing No, choosing menu View->Perspective view and choosing the RadiosityNormal template again. A warning message might appear telling you that the current 3D view is not in perspective mode and the rendering will therefore differ.Press the small down arrow next to the New Povray project button, and choose the RadiosityNormal template.Start by loading the table.FCStd file that we modelled earlier or from the link at the bottom of this chapter.We will use the table we have been modelling in the traditional modeling chapter to produce renderings with PovRay and Luxrender. In this preferences screen we can also set the desired image size we want to produce. The location of the povray or luxrender executables can be found by searching your system for files named povray (or povray.exe on Windows) and luxrender (or luxrender.exe on Windows). On Linux, FreeCAD will pick it from the standard locations. This is usually only required on Windows and Mac. Once POV-Ray or Luxrender is installed, we need to set the path to their main executable in the FreeCAD preferences. They both provide installers for many platforms or are usually included in the software repositories of most Linux distributions. The best way to know is to look at examples on each engine's website.īefore being able to use the Raytracing Workbench in FreeCAD, one of these two rendering applications needs to be installed on your system. Both have their strengths and weaknesses, depending on the type of image one wants to render. ![]() POV-Ray is a very old project, and is considered a classical raytracing engine, while Luxrender is much newer, and is categorized as an unbiased renderer. Through its Raytracing Workbench, FreeCAD can use two of these rendering tools: POV-Ray and Luxrender. Some other open source rendering tools are made to be used inside other applications, and will take care of doing the complex calculations to produce realistic images. 3D models can very easily and faithfully be exported from FreeCAD and imported into Blender, where you can add realistic materials and illumination, and produce the final images or even animations. The most famous one is probably Blender, which is very popular, and widely used in the film and gaming industries. +Fortunately, the open source world offers many applications to produce realistic images. Because FreeCAD is an application geared more towards technical modelling, it does not feature any advanced rendering tools. Of course, producing photo-realistic images requires a lot of work, in addition to a 3D application that offers specific tools for that purpose, such as precise controls for materials and lighting. However, anybody who has seen a recent Hollywood movie, knows that it is possible to produce images with a computer that are almost indistinguishable from a photograph. ![]() ![]() Of course, we could say that what we see in the FreeCAD 3D view is already nice. In computer speak, the word rendering is used to describe a nice image produced from a 3D model. ![]()
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