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- 3D One Plane
- ------------
- Copyright (c) Tony Still and John Ansell November 1993
- Inspired by Bryan Creer/BAU December 1993
- Please see Conditions of use at the end of this file.
-
- Instructions
- ------------
-
- 3D One Plane creates 3D Images from sprites. It takes a while to run and
- does not multi-task.
-
- User Files
- ----------
- Input File: In the same directory as the !3D application, a Sprite file
- called 'Picture' containing a sprite 'pict' with neither a mask
- nor a palette. 'pict' must be in Mode 9, everything not in
- white is the picture.
-
- The colours in 'pict' indicate the depth of any pixel from the
- backdrop. The colour numbers (as shown by the iconbar palette
- tool) are successively further from the backdrop, light-blue is
- the furthest and light grey the closest (if the standard desktop
- colours have not been changed); if you just work with greys,
- dark greys are in front of light ones.
-
- 450x300 is a suggested size for 'pict', this fits well onto A4
- paper (in landscape). 'pict should be at least 100 pixels wide,
- the rightmost 50 columns should be empty (white) or the 3D
- effect will be lost at the right-hand edge.
-
- For a simple image, just draw a picture in black.
-
- Output File: Created in the same directory as the !3D application.
- A sprite file called 'Image' containing a Mode 1 sprite also
- called 'image'. This will be the same size as 'pict'.
- Three of the four colours are used to give black, white & grey.
-
- One easy way of producing the input file is to use !Draw. Create the shapes
- and give them colours matching their back-to-front stacking; this lets you
- move them around until you're satisfied. Then switch to Mode 9 and use
- !Paint to snapshot the Draw window (remembering to include the blank right-
- hand margin). Just rename the sprite and the file and you're away.
- [You can still get Mode 9 on the RISC PC by typing 9 into the mode menu item
- from the display menu-bar icon].
-
-
- Viewing
- -------
- Use !Paint or similar to fill the screen with 'image'. A zoom of 1:1 is
- ideal. Relax eyes and try to look through the image; eventually the 3D image
- will appear (honest).
- The images work just as well when printed, small half-tones are recommended.
-
- Happy squinting.
-
-
- Compatibility
- -------------
- Tested on RISC OS 2, 3.1 and 3.6.
-
-
-
- Conditions
- ----------
- You are welcome to use this application freely and to pass it on to others.
- You must not change it and you must not sell it (though PD libraries can
- charge reasonable handling fees).
-
- Contact: Tony Still (Arcade #65).