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- POVray comes with an <include> file which contains the description of a
- torus which has a major radius equal to 40 and a minor radius of 12.
- This is roughly donut shaped. You can scale it and rotate it, but it
- always stays roughly donut shaped.
-
- If you want a torus which is skinny (like a bicycle inner tube) or
- extremely chubby then you had to do some maths. Until now.
-
- POVshape will create a torus definition with specified radii which you can
- copy into your scene files, and will create a couple of other shapes that
- you might find useful.
-
-
- To operate POVshape:-
- Click MENU on the iconbar icon.
- Select a shape from the menu.
- Adjust the parameters.
- Select "OK".
- Drag the output to a filer.
- Then edit the resultant text file into your scene.
-
- ((Is there anyone out there who can give me a SIMPLE explanation of how
- to save my data directly into an application like Edit?))
-
-
- TORUS
- =====
-
- The resulting torus is defined with the axis of symetry vertical
- (i.e. in the Y direction).
-
- It is created at unit size, then scaled up to the size you asked for.
- You may prefer to work with the unit size version, and scale it yourself,
- in which case, simply delete the scale command.
-
- See the "Help1" Drawfile in the !POVshape directory.
-
- If the <Major Radius> is less than the <Minor Radius> then the hole in
- the middle heals up. This might be useful for making a shape like an apple.
-
- A torus with a zero <Major Radius> is just a very inefficient way of
- describing a sphere.
-
- NECK
- ====
-
- A "neck" is a shape which can be used to smoothly join two cylinders with
- different radii. You can use it to build shapes like Champagne bottles by
- attaching cylinders to each end, or to build shapes like light bulbs and
- teardrops by attaching a hemisphere to the fat end.
-
- The resulting shape is defined with the axis if symetry vertical.
-
- It is created at unit size, then scaled up to the size you asked for.
- You may prefer to work with the unit size version, and scale it yourself,
- in which case, simply delete the scale line.
-
- See the "Help2" Drawfile in the !POVshape directory.
-
- SOFT CYLINDER
- =============
-
- This is a cylinder with rounded edges. You could use it to build shapes
- like jamjars.
-
- Warning: transparent soft cylinders can sometimes take an inordinate amount
- of time (i.e. more than two weeks for a mode 21 image on an A5000) to render.
- I think that this is because some rays get trapped between the walls and
- bounce around for a very long time.
-
- The resulting shape is defined with the axis if symetry vertical.
-
- It is created at the size you asked for. You may prefer to work with the
- unit size version, and scale it yourself. In order to facilitate this, the
- definition contains a suitable commented-out scale command which you can
- activate.
-
- See the "Help3" Drawfile in the !POVshape directory.
-
- AUTHOR
- ======
-
- This program was written by Mike Williams, 111 Evering Road, LONDON N16 7SL, who
- is always keen to receive feedback, bug reports and to swap PD.
-