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- Version 1.4
- Released: 11 April 1992
-
- Support for many SVGA boards at 640x480 resolution in 256 colors. See
- documentation for the -V flag. (Note: SVGA displays only work on the
- 286 versions.)
-
- Changed the way the status output is managed. Now requires a number
- following the -t flag. Note that line and pixel status will screw
- up SVGA displays - drawing goes to the wrong place starting around
- line 100. If using SVGA display then either use no status, or "totals".
-
- Added cylindrical blob components. Changed the syntax for blobs to
- accomodate the new type.
-
- Added lathe surfaces made from either line segments or quadratic
- splines.
-
- Added sweep surfaces made from quadratic splines.
-
- Height field syntax changed slightly. Non-square height fields now
- handled correctly.
-
- Added adaptive antialiasing.
-
- Squashed bug in shading routines that affected almost all primitives.
- This bug was most noticible for objects that were scaled using different
- values for x, y, and z.
-
- Added transparency values to color maps.
-
- Added new keywords to the file "polyray.ini": shadow_tolerance, antialias,
- alias_threshold, max_samples. Lines that begin with "// " in polyray.ini
- are now treated as comments.
-
- Short document called "texture.txt" is now included in "plydoc.zip". This
- describes in a little more detail how to go about developing solid textures
- using Polyray.
-
- Version 1.3
- (not released)
-
- Added support for scan converting implicit functions and polynomial
- surfaces using the marching cubes algorithm. This technique can be
- slow, and is restricted to objects that have user defined bounding shapes,
- but now Polyray is able to scan convert any primitive.
-
- A global shading flag has been added in order to selectively turn on/off
- some of the more time consuming shading options. This option will also
- allow for the use of raytracing as a way of determining shadows,
- reflectivity, and transparency during scan conversion.
-
- Added new keywords to the file "polyray.ini": pixel_size, pixel_encoding,
- shade_flags.
-
- Improved refraction code to (mostly) handle transparent surfaces that
- are defined by CSG intersection.
-
- Fixed miscoloring of shadows that receive some light through a transparent
- object.
-
- Jittered antialiasing was not being called when the option was selected,
- this has been fixed.
-
- Fixed parsing of blobs and polygons that had large numbers of entries.
- Previously the parser would fail after 50-60 elements in a blob and the
- same number of vertices of a polygon.
-
- In keeping with the format used by POV-Ray and Vivid, comments may now
- start with "//" as well as "#". The use of the pound symbol for comments
- may be phased out in future versions.
-
- Version 1.2
- Released: 16 February 1992
-
- Scan conversion of many primitives, using Z-Buffer techniques.
-
- New primitives: sweep surface, torus
-
- Support for the standard 320x200 VGA display in 256 colors.
-
- An initialization file ("polyray.ini") is read before processing. This
- allows greater flexibility in tuning many of the default values used by
- Polyray.
-
- User defined bounding slabs added. This greatly improves speed of rendering
- on data files with many small objects.
-
- Noise surface added.
-
- Symbol table routines completely reworked. Improved speed for data files
- containing many definitions.
-
- Bug in the texturing of height fields corrected.
-
- Version 1.1
- (not released)
-
- Added parabola primitive
-
- Dithering of rays, and objects
-
- Blob code improved, shading corrected, intersection code is
- faster and returns fewer incorrect results.
-
- Version 1.0
- Released: 27 December 1991
-
- Several changes in input syntax were made, the most notable result being
- that commas are required in many more places. The reason for this is that
- due to the very flexible nature of expressions possible, a certain amount of
- syntatic sugar is required to remove ambiguities from the parser.
-
- Several new primitives were added: boxes, cones, cylinders, discs, height
- fields, and Bezier patches.
-
- A new way of doing textures was added - each component of the lighting
- model can be specified by an implicit function that is evaluated at run
- time. Using this feature leads to slower textures, however because the
- textures are defined in the data file instead of within Polyray, development
- of mathematical texturing can be developed without making alterations to
- Polyray.
-
- File flush commands in the data file and at the command line were added.
-
- Several new Targa variants were added.
-
- Image mapping added.
-
- Numerous bug fixes have occured.
-
- Version 0.3 (beta)
- Released: 14 October 1991
-
- This release added Constructive Solid Geometry, functional surfaces defined
- in terms of transcendental functions, a checker texture, and compressed
- Targa output.
-
- Polyray no longer accepted a list of bounding/clipping objects, only
- a single object is allowed. since CSG can be used to define complex shapes,
- this is not a limitation, and even better makes for cleaner data files.
-
- Version 0.2 (beta)
- (not released)
-
- This release added animation support, defined objects, arithemetic expression
- parsing, and blobs.
-
- Version 0.1 (beta)
- (not released)
-
- First incarnation of Polyray. This version had code for polynomial equations
- and some of the basic surface types contained in "mtv".
-
-