This comes into play when you assemble a model out of component parts - the Explode process ensures that each individual line and point are referred to separately and independently, which is crucial to the Export and conversion process. If that option is availabe, select it, and repeat step (3) until the option to Explode is no longer available. (3) Under Edit -> Entities (a number of entities should be displayed), a new sub-menu will appear in which the first option is Explode. If there are spaces in the filename, the scenery parser will not interpret the filename correctly and Flightgear will abort suddently when in the vicinity of your newly placed object, but you won't run into this problem until step (27) when you attempt to fly near the object. I suppose the filename used isn't truly critical until step (14) but it's easiest to keep everything consistent. (2) Save your SketchUp file ensuring NO SPACES in the filename keep SketchUp open.
For each face that needs to be flipped, right-click it and select "Reverse Faces". Be careful that all model faces are facing outward use View -> Face Style -> Monochrome to check this (white faces are the visible side purplish shaded faces are the non-rendered or invisible side) and then use View -> Face Style -> Shaded With Textures to return to normal. (6) WordPad, or something to edit a rich text file with. (5) GIMP, or something to edit images with in both. (4) Python, whichever version Blender requires. (3) Blender, whichever version is most current. (2) PowerArchiver or a program to unzip/untar files. (1) The freeware version of SketchUp, to create your model. For additional troubleshooting regarding object placement please see those other articles. The latter part is somewat redundant from other articles available in the Wiki but I include it because it gives more precise instructions based on the model file you have just created. This article outlines the process for converting a model from the freeware version of SketchUp into a format useable by FlightGear, and then for placing that model into the scenery database. Please review and comment in the meantime.
#Ac3d converter how to#
Once I figure out how to submit this to the Wiki (I haven't had a chance to look at the submission guidelines or process yet), I would like to do so. I have added in some of the fixes for the couple of issues that came up with Alex and others (powers versus multiples of 2, spaces in filename, model components need exploding), and also some additional information just as an FYI. Please see the below article on conversion from Sketchup to AC3D.
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