by I'm trying to add some functionality to my personal version of POV 2.2,
but I keep running into a problem with output. Specifically, when I run
it the display looks great, but I either get no output file or I get a
targa file with no headers, neither of which is very useful. Here's the
specifics of what I'm doing:
Compiler: Symantec C++ V6.0
Computer: 486 SLC2/66 and/or Pentium/90 (both fail)
OS: Windows 95 DOS shell build 490
I can run the official ICB version, and I can run a build of the
unmodified sources. Here are my changes:
in PARSE.H, I added a token at the end and incremented the last ID
in TOKENIZE.C, I added the token and its textual representation into
the array in alphabetical order
in PARSE.C, I added a simple function to parse my one-keyword, one-value
global statement (My statement is of the form "depthmap r" for
some real-valued r) I also added the hook to call it when
my token is recognized.
in LIGHTING.C, I added a global variable to hold the result of the above
parsing, and I short-circuited Determine_Apparent_Colour to
return a gray value scaled from the distance to the
intersection point (0 distance is white, r distance is black)
in FRAME.H, I changed the relevant defines to insert my name
None of these changes should have influenced the output, no? If I insert
trace messages into the targa routines, it says it executes the code to
write the headers, but when I then look at the file, it starts with FF's
(for an all-white target scene, without the depthmap keyword)
Does anyone have any idea why this isn't working?
--
Ron Parker