TruFlitetm FAQ

Q: I'm looking for something like this as an OCX for inclusion in an application. Do you have or know of any OCX's?
A: Sorry, the current TruFlite version is a standalone application. It is not being published as an OCX - but this is a good idea indeed.
Q: Apparently this program will not merge mpg video with audio. Hot did you make your movies with sound? Please let me know the program to use
A: We're using the MPEG Software Simulation Group's audio multiplexer by Christoph Moar, Siemens Corporate Res.&Dev., Dept. ST SN 11/T SN 6, (C) 1994, 1995. This is public domain software. TRICKY!
Q: I have a problem with this small files attacched, organized in rows and columns (2200x3), generated by SURFER (old DOS version) I have trasformed it with a filters of TRUFLITE (ASCII regular), but on extrusion process it's doesn't generate really altitude, but a fantastic land, exactly the contrary of the real land. Can you help me?
A: It is an ASCII file containing x, y, z triples in each row. The TruFlite regular ASCII import filter does it OK.
Q: How do I make a slower movie? At 25 frames a second, the land really goes by fast. Can I make it at 10 frames or so?
A: Sorry, MPEG is intended for frame rates between 25 and 30 frames per second only. You'll have to insert inbetween frames (by increasing the total frame count) or use some other video encoder (AVI), which can be done with TruFlite's output files as well.
Q: I have tried various ways to make movie intro/title frames. How do I do that without any background, except that of the TGA mask image?
A: You can use two methods: masking and blending. Masking: Create a mask file; define the regions that have to be fully transparent; set them to one unique color COL1; define the regions that have to get halfway darkened/lightened; set them to their respective unique colors COL2/COL3 (no matter which one); set the lower left corner pixel to COL1, the right neighbor to COL2, and the next to COL3; specify this file as the mask file when doing a TruFlite rendering. Blending: Create an all-gray (Red/Green/Blue = 128/128/128) mask file. Insert any graphics you want - any color value greater than 128 will lighten the resulting image, any color value less than 128 will darken it. Use this file in a TruFlite file blending (???) or in a command line process: filecalc input.tga mask.tga output.tga * 0 0 18
Q: But, after frame 5, the vbv_delay overflow message came up between frames.
A: Overflow means, at this point of the video the video delay buffer would get full - the stream source would have to stop sending data. This is a rather undesired situation for a CD player; it's like a very short pause. An underflow would be more severe - no data left in the buffer, all that comes from the data source will have to be decoded instantly. The latter condition decreases image quality in an intolerable extent. See the MPEG Software Simpulation Group mpeg2encode description.
Q: The blur was the 32 grid. I redid at 256 and much better picture.
A: Use grids of 32 for previewing only. Even 256 is still not the finest.
Q: I have downloaded your TFMAKE app and am getting an error message when I try to run your example "tfmake_3arcsecond.bat -122 38". The app seems to execute properly from a DOS command window (I am using Windows NT 4.0 (service pack 3) on a T1 line in our office). However, once it executes the "Get the GIF texture file from the Internet" command it seems to be sending the command "tear /p /f "" After it sends this command it waits a bit then tells me " Error: (12152) The server returned an invalid or unrecognized response", then the message "An error occurred during the scenery creation".
A: The Tiger Mapping Server is heavily loaded. Sometimes it stops sending the already prepared GIF file. The TFMAKE programs then can't cope with the mutilated input.
Q: Are you aware of any changes in the "" site that would cause your program to "crash" while trying to execute the "gif2tga" portion of the batch program? It downloads the .GIF file, but I get an "error in getting datablock size" message, "too much input data, ignoring extra...." message, and an "EOF/read error on image data". The program can't complete the scenery creation.
A: As above.
Q: I am searching for an appealing map of ... from which I need extract the .... districts and some more information. Could please guide me how I can use your software to make a map as described.
A: We (the TruFlite support crew) open an atlas, locate the region. If it's inside the U.S.: Get the 3 arc second DEM from the USGS; get the texture from Tiger (user TFMAKE); render one or two appealing sceneries; check it for correctness; send back the result; send a copy to - maybe it's worth being published on our website.
Q: Can I get a free version for my diploma/thesis?
A: I (Martin D. Adamiker, will take these cases into consideration. I usually agree (happens only two or three times a year!)
Q: I'm looking for a 3D modeler that can generate an image of a world for a selected area to include it in an VR file in a sphere or a cylinder.
A: TruFlite renders xyz projections only - please use some other tool. I (Martin D. Adamiker, have some experience with them, so forward requests like this to me.
Q: I have noticed that there are quite a few missing DEMs from the Northridge site. The ones in particular that I need are: ...
A: Not all maps that are published are also available as DEMs. The coverage is only approx. 50% (???). Refer to the EROS Data Center's DEM coverage map. Martin D. Adamiker ( has an up-to-date list of ALL DEMs, be they on paper only or not.
Q: As I tried to download some of the sample files from your site I recognized that these files have been removed. Please tell me if these files (Tiger and DEMs) are included in the regular program (or on the demo CD) or is it possible to get them from another site?
A: This happened once. Check the USGS DEM server (it was down for 4 to 6 hours); then the Tiger Mapping Server (with a manually entered map request) - sometimes it's overloaded, and this will happen even more often in the future.
Q: Could you tell me how to make a PAR file? It seems to me that this file can not be generated automatically from the tf32 program.
A: Three PAR sample files are in See the MPEG Software Simpulation Group mpeg2encode description.
Q: This is the data format that I am having trouble with. Are you guys familiar with it? I have attached two files.
A: It was a binary file, 2 bytes per pixel, Intel byte order. Ask for the image width and height, and create a header file for it. Import it, create a nice scenery for it, render it and send back the header file, the TRF file and some output files as JPEGs.
Q: My MPEG encoded files can be played, but it's only all green.
A: Ask for at least one input file (TGA or YUV, and for the PAR file used. Read the YUV or TGA file with PhotoShop, verify the image size is specified correctly in the PAR file. Try mpeg2encode on it until it works. Replay the chain of corrections to the customer.