RY04@DKAUNI11.BITNET (03/14/89)
In article <8903081558.dmb@TIS.COM> David M. Baggett writes : > > >> From: shc1@ukc.ac.uk (S.H.Cogheil) >... >>To: dmb@TIS.COM >>In-Reply-To: <8902131815.AA10307@TIS.COM> > >>Would you possibly have any info on the .img formats ? > >Unfortunately I don't. If you (or anyone else here) has info >on .IMG, send it along to me and I'll add it to the list. > > Dave In fact there exists an information about *.IMG files. I will try to discribe this format now. At the beginning of each IMG file there is a structure with following format : typedef struct { int im_version; /* version number of image file */ int im_headlength; /* length of header in words -> you should ALWAYS check this value and skip the rest of the header if this value is greater than 8 !! */ int im_nplanes; /* number of colour planes */ int im_patlen; /* pattern length in bytes; normally 2 */ int im_pixwidth; /* pixel width in thousands of mm */ int im_pixheight; /* pixel height in th. of mm */ int im_scanwidth; /* line width in pixels */ int im_nlines; /* number of lines */ } the picture information is structured in three groups : - monochrome pixel series ( "solid run" ) are stored as simple byte. In this case bit no. 7 gives the status of the point, on or off. bit no. 0-6 give the number of pixels to draw. - pattern series ( "pattern run" ) have as first byte a "0" and as second the number of of repeats. the length of a pattern is stored in "im_patlen". You see, the first two bytes are followed by as many bytes as are needed to describe this pattern. - picture informations which are difficult or aren't to be shortened ( "Bit String" ) are stored without compressing. In this case the first byte is $80 and the second gives the number of bitstrings. Behind byte 2 follow the bytes of the bitstring. If there more than one line with the same content they are coded in following way : typedef struct { int sc_zero; /* always 0 */ int sc_ff; /* always 255 */ int sc_cnt; /* number off coded scanlines */ } ATTENTION !! Information can be found only for one line and one plane. You should take care that always a line with a full byte number is coded, although the picture in fact can be smaller. So it can be that there are up to 7 bits more information. The real picture width stands in "im_scanwidth". Well, I think that should be enough. Now, I have a problem of my own and hope someone on the net can help me. 1) Do there exist any FONTS for GDOS which are NOT Swiss or Dutch or Rockface and if they do, in which sizes are they available ? I want to write a program which uses full VDI interface and will work expressive with texts. So I have a great interest to get fonts in style ea. helvetica,times,swiss,symbol in sizes 7,9,12, 14,18,20,24 ( 28 ) points like on the mac. Does anyone have an idea to get these ???? 2) What's about this Spectre 128 where you are talking of ? Can any- one explain this to me ? ( what for ROMS ? Which converter ? where could I get it ? how expensive is it ?....) Thanks, Valentin P.S : Please answer NOT to the List but direct to me..