home *** CD-ROM | disk | FTP | other *** search
- Backmap - A collection for Vivid's "background {xxx.map}"
- *********************************************************
-
- (C) 1993 - Paul Smith - RAYTECH BBS
-
-
- I really like the under-used background map facility included in the
- Vivid Raytracer's studio definition. It's great for making effective
- use of reflective objects in quick scenes.
-
- Only two suitable .MAP files are commonly available, and one of those
- (SKY.MAP) is flawed ! You see a green line on the horizon where one of
- the colour values is wrong. Oooops.
-
- This pack includes 24 different Vivid compatible .MAP files and a
- quick Qbasic program to generate tons more. The supplied MAPs are
- supported by a reference / catalogue image which shows the approximate
- colours offered.
-
- The Qbasic program will interpolate smooth graduations between any number
- of "control points" in the 256 entry MAP file.
-
- You use the program as follows :
-
- Enter "Qbasic /run map" at the DOS prompt.
-
- The program first asks for the output filename, you will usually be
- creating a .MAP file so enter something like MYMAP.MAP. Hit return.
-
- Next, you are prompted for the number of control points. This means the
- number of colour points from which the program will interpolate the smooth
- MAP. Suppose you enter 3. That would be the "north pole", a part-way point
- and the "south pole". You can have any reasonable number of control points.
-
- Once the program knows how many control points you want, you need to tell it
- where they are. It assumes a control point at the north pole and the south
- pole. So in our example (using three points) you might enter "128" which
- would specify the mid-point in the 255 entry map file that you are creating.
-
- Once the program knows where the control points are you are asked for
- colour values for each of the control points. You enter a RED, GREEN, BLUE
- triple in the range 0-255. For example :
-
- Full White would be entered as : 255,255,255
- Half Red would be entered as : 128,0,0
-
- Having entered the control point colours the program generates the MAP
- file on disc.
-
- Use the MAP file in your Vivid scenes in the usual way. Refer to the Vivid
- documentation for more details.
-
- The tiny vivid scene file "MAPTST.V" will create an image of any of the
- MAPs. similar to those used to make the catalogue image.
-
- **************************
-
- Disclaimer :
-
- These programs are supplied "as is" without warranty of any kind. If you
- decide to use them you assume the entire risk, including, but not limited,
- to damage to hardware or software, loss of data, unexpected rainstorms and
- visitations by alien beings.
-
- BACKMAP is not guaranteed to do anything at all.
-
-
- Limited Licence :
-
- You are entitled to use this program for up to 30 days for the purposes
- of evaluation. If you wish to continue to use it beyond that time you
- should make a small payment to the author.
-
- This program and the accompanying documentation are copyright Paul Smith
- 1993. They are not public domain or freeware and a small payment
- should be made to the author if found useful. Distribute freely, but you
- must include ALL the original files and documentation.
-
- For a non-commercial use on a single machine the author suggests a single
- payment of 5 pounds stirling. Different offers of payment will be accepted.
- Whatever you think is right will probably be fine by me.
-
-
- **************************
-
- Vivid is a trademark of the most excellent God of Raytracing - Stephen Coy
- MS DOS and QBasic are a trademarks of Microsoft
-
- **************************
-
-
- BACKMAP programs and documentation are copyright :
-
- Paul Smith Author's BBS : RAYTECH BBS +44 86288 340
- Rubicon fidonet : 2:259/49
- Clashmore PCGnet : 9:/526/464
- near Dornoch
- Sutherland or FAX : +44 86288 377
- Scotland
- IV25 3RG The UK's only Raytracing BBS !
-
- Comments are welcome. Enjoy !
-