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- GFA RAYTRACE - BRIEF OPERATING INSTRUCTIONS
-
- PLEASE NOTE: THIS IS THE FULL VERSION OF GFA RAYTRACE. IT REMAINS GFA
- DATA MEDIA'S COPYRIGHT AND IS NOT PUBLIC DOMAIN.
-
- FOR £19.95 GFA WILL SUPPLY YOU WITH THE 136-PAGE GFA MANUAL AND A DISK
- CONTAINING ANIMATION PLAYBACK ROUTINES, DEMOS AND TUTORIAL FILES. THE
- ADDRESS CAN BE FOUND AT THE END OF THIS DOCUMENT.
-
-
- 3D EDITOR MENU
- --------------
-
- WINDOWS
- When Raytrace first loads you're presented with a screen consisting of
- four windows and a menu. The four windows represent the three axis
- from which you can see the object and the fourth window shows a 3D
- wire frame of the object being created. Initially these windows will
- be empty.
- If you press the help key the letters x, y and z will appear
- next to the relevant lines in the windows to help you identify the
- axis while creating your object.
-
- WINDOWS SCALEFACTOR
- At the bottom of the menu box there are four boxes with the numbers
- one, two, four and eight in them. These determine the scalefactor. The
- scalefactor is how large the object appears in the windows. One allows
- you to see the whole object and factors two, four and eight magnify
- the object by that number to give a close up.
-
- VIEW DIRECTION
- The four arrows at the bottom of the menu and the two boxes next to
- them indicate the horizontal and vertical angles from which the object
- is being viewed. Clicking on the arrows increases or decreases the
- angles.
-
- ELEMENTS AND OBJECTS
- Elements are simple shapes which are used to make up the whole object.
- Typical elements are triangles, rectangles, spheres and cones. Other
- objects can be created and used in the main object. Other objects
- include walls, lamps and the horizon.
-
- ADD
- This fucntion is used to add objects and elements to the diagram. A
- sub-menu appears when you select this function and from here you can
- select what you wish to add, including, ground, the horizon or even a
- 512 colour palette.
-
- SAVE
- Three things can be saved to disk with Raytrace: Data, Screen or
- Animation. When you save data the wire-frame information is saved to
- disk. Save screen is used to save a raytraced picture (see do
- Raytracing later) and save animation will save an animated wire-frame
- picture.
-
- LOAD
- The load function is used to load data, screen and animation as above,
- but it's also used to load ground, sky and a texture map. Each of
- these last three use picture files from disk which can be in the form
- of: Degas, Neochrome, GFA Artist or Spectrum 512. Textures can also
- be GFA Raytrace SCL or SUL files. Ground and sky files replace the
- existing ground and background and textures are pasted onto objects.
-
- OBSERVER
- The observer is the position from which the camera is viewing the
- world. Selecting this function will present you with three bars in the
- view windows which you slide to reposition the observer.
-
- ERASE
- The erase option is self explanatory and has a sub menu which allows
- you to delete any part of the object created.
-
-
- STATUS
- Status is used to change certain parameters within the program.
- Compression allows picture files to be compacted to save disk space.
- The ground and sky options are used to switch between picture and
- clear for the relevant section of the scene.
-
- EDIT
- Objects can be changed or have their parameters altered with the aid
- of the edit function.
-
- INFO
- This function provides you with information on the object, sky, ground
- etc and also provides you with the amount of free memory.
-
- UTILITY
- The drive letter can be changed, free disk space determined and files
- can be deleted from disk with utility.
-
- RAYSCALE
- Rayscale allows you to zoom into and out of the 3D workld that you've
- created.
-
- RAYTRACE
- This takes you to the raytracing menu.
-
- ANIMATE
- This takes you to the animation menu.
-
- RAYTRACING MENU
- ---------------
-
- DO RAYTRACING
- This produces the actual 3D solid picture and can take up to an hour
- to run due the immense number of calculations required.
-
- DO AND SAVE
- This is exactly the same as above except that once the picture is
- finsihed it will be saved to disk.
-
- DO AREA
- As DO RAYTRACING except that only a portion of the picture is
- raytraced.
-
- DO ANIM
- This is identical to the above except it creates a file on disk of all
- the pictures involved in the animation.
-
- SAVE SCREEN AND LOAD SCREEN
- Allow the loading and saving of raytraced pictures.
-
- EDITOR
- Takes you to the Editor Menu.
-
- ANIMATE
- Takes you to the Animation Menu.
-
- QUIT
- Exit program and return to GEM Desk Top.
-
- R.G.B.
- This function determines how many colours will appear on screen at any
- one time.
-
- SPOT
- This has two settings: on and off. When spot is on the lamps will have
- the usual effect on texture mapped objects. When off the texture
- mapped objects will be unaffected by the lamps and retain their
- original colours.
-
- ANIMATION MENU
- --------------
-
- NEW
- Destroys any existing animation sequences.
-
- MOVE
- This allows you to move objects, lamps, the ground or the observer to
- create the impression of movement.
-
- CHANGE
- Angles, colours, views and radius canm be changed with this function.
-
- SHOW WIRE
- A wire frame animation of the sequence is produced so that you can see
- how it looks without waiting for the raytraced sequence to be
- prepared.
-
- SAVE AND LOAD
- These are used to save and load animation sequences.
-
- END
- End is used to determine which is the last frame of the animation.
-
- >, <
- Single step forwards and backwards through the sequence.
-
- >>, <<
- Moves to the last or first frame of the sequence.
-
-
- _____________________________________________________________________
-
-
- We hope you have many hours of enjoyment experimenting with GFA
- Raytrace.
-
- GFA Data Media (UK) Ltd
- Box 121
- Wokingham
- Berkshire
- RG11 9LP
-
- Tel: 0734 794941
-
-
-