anandk@crysiris.rice.edu (anand kolatkar) (05/16/91)
I am interested in opinions and advice on using a color printer off of an IRIS. Either color Postscript or screen capture types of printers would be OK. Specifically, I would like info and opinions on the quality of color printers when printing shaded polygons (spheres, etc.). Info on price and ease of connecting to SGI's would also be appreciated!! Thanks in advance for any info. Please email: anandk@keckiris.rice.edu Anand Kolatkar Rice University Dept. Biochemistry
baskett@forest.asd.sgi.com (Forest Baskett) (05/16/91)
Making Postscript do shaded polygons requires standing on your head. There is no support in the Postscript language for shaded polygons. Forest Baskett Silicon Graphics
blbates@AERO36.LARC.NASA.GOV (Brent Bates ViGYAN AAD/TAB) (05/16/91)
We have a Tektronics 4693D, it cost us about $10k about 2 years ago, and we are very pleased with it. We bought parallel boards for all our SGI's and they all independently connect to the printer. The best color hardcopy unit I have seen is a Kodak one, which cost ~$20-25k. I don't have the model number handy. Brent L. Bates Phone:(804) 864-2854 NASA-Langley Research Center FAX:(804) 864-6792 M.S. 361 Hampton, Virginia 23665-5225 E-mail: blbates@aero36.larc.nasa.gov or blbates@aero8.larc.nasa.gov
blbates@AERO36.LARC.NASA.GOV (Brent Bates ViGYAN AAD/TAB) (05/16/91)
Neither of the machines I mentioned are PostScript machines. The Tektronics takes bitmapped images as either color mapped or RGB values. The printer has its own intenal way of doing the dithering and has several options for gamma correction. As I said we are very pleased with the results. We rarely use it for lines drawings, most are shaded images. All images are a screen type dump, so they are bitmapped images. I don't know what the internal format of the Kodak unit is, but, the images I saw looked so good you would think they were photos. Brent L. Bates Phone:(804) 864-2854 NASA-Langley Research Center FAX:(804) 864-6792 M.S. 361 Hampton, Virginia 23665-5225 E-mail: blbates@aero36.larc.nasa.gov or blbates@aero8.larc.nasa.gov
meyer@ifi.unizh.ch (Urs Meyer) (05/22/91)
I wonder if anybody got one of these fancy Color Laser Copiers CLC500 from
Canon and managed it to connect it to an Iris using the SCSI interface?
Are there any drivers available, either public domain or commercial?
Any help will be appreciated.
Urs
Urs Meyer ---------- meyer@ifi.unizh.ch, {uunet,...}!mcsun!cernvax!unizh!meyer
University of Zurich, Dept of Computer Science, Multimedia Lab, CH-8057 Zuricholson@anchor.esd.sgi.com (Dave Olson) (05/23/91)
In <1991May22.115034.3987@ifi.unizh.ch> meyer@ifi.unizh.ch (Urs Meyer) writes: | I wonder if anybody got one of these fancy Color Laser Copiers CLC500 from | Canon and managed it to connect it to an Iris using the SCSI interface? | Are there any drivers available, either public domain or commercial? | Any help will be appreciated. | I haven't heard anything about it even having a scsi interface, but we have one on loan with the gpib interface. It has VERY impressive quality (of course, it is a tad bit expensive). The simple minded driver we have uses very little gpib stuff, so assuming the scsi interface is (conceptually) at all similar to the gpib, it shouldn't be too much work to write a driver using the ds generic scsi driver. -- Dave Olson Life would be so much easier if we could just look at the source code.
davidh8@pogo.WV.TEK.COM (David Haight) (05/23/91)
In article <1991May22.115034.3987@ifi.unizh.ch> meyer@ifi.unizh.ch writes: >I wonder if anybody got one of these fancy Color Laser Copiers CLC500 from >Canon and managed it to connect it to an Iris using the SCSI interface? >Are there any drivers available, either public domain or commercial? >Any help will be appreciated. > >Urs > > >Urs Meyer ---------- meyer@ifi.unizh.ch, {uunet,...}!mcsun!cernvax!unizh!meyer >University of Zurich, Dept of Computer Science, Multimedia Lab, CH-8057 Zurich We (Tektronix) have two color printers that are compatible with the IRIS. Interface is serial parallel or ethernet and there are drivers available. The printers are 300dpi thermal wax, not laser. The Phaser II PX is a postscript printer and the Phaser II DX is a raster printer. The DX has a SCSI interface but no driver has been written for the IRIS. If you would like more info, email me. ----------------------------------------------------------------------- David Haight | davidh8@pogo.wv.tek.com | INTERNET Tektronix, GPID Div. | {backbone}!tektronix!pogo!davidh8| UUCP PO Box 1000, M/S 63-630 | (USA) (503) 685-3151 | VOICE Wilsonville, OR 97070 | (USA) (503) 685-3063 | FAX -----------------------------------------------------------------------
laukee@canon.co.uk (David Lau-Kee) (05/23/91)
olson@anchor.esd.sgi.com (Dave Olson) writes: >In <1991May22.115034.3987@ifi.unizh.ch> meyer@ifi.unizh.ch (Urs Meyer) writes: >| I wonder if anybody got one of these fancy Color Laser Copiers CLC500 from >| Canon and managed it to connect it to an Iris using the SCSI interface? >| Are there any drivers available, either public domain or commercial? >| Any help will be appreciated. >| >I haven't heard anything about it even having a scsi interface, >but we have one on loan with the gpib interface. It has >VERY impressive quality (of course, it is a tad bit expensive). >The simple minded driver we have uses very little gpib stuff, >so assuming the scsi interface is (conceptually) at all similar >to the gpib, it shouldn't be too much work to write a driver >using the ds generic scsi driver. You can get it with a SCSI interface. There is a SCSI driver around for the Sun 4, but from what I've seen it wouldn't be *too* nasty to write one for an Iris. What you might want to do is to contact your local CLC marketing people and tell them you will buy one with the SCSI if they get a driver written... the marketing-techsupport feedback at Canon is pretty efficient. BTW: you can also get the CLC with something called the PS-IPU (the PostScript Image Processing Unit), which will take Level 2 (I believe) PostScript and image that (perhaps not that useful on a SGI... and in any case, for very, very, very good quality as opposed to very, very good quality, I feel you'd best go for the SCSI / GPIB connexion and throw image data at it). David ------------- David Lau-Kee, Canon Research Centre Europe, 17/20 Frederick Sanger Rd, Surrey Research Park, Guildford, Surrey, GU25YD, UK. laukee@canon.co.uk, laukee@canon.uucp, ..!mcsun!ukc!uos-ee!canon!laukee Tel: +44 (0) 483 574325 Fax: +44 (0) 483 574360
farestam@ORION.CERFACS.FR (Stefan Farestam) (05/24/91)
>Making Postscript do shaded polygons requires standing on your head. >There is no support in the Postscript language for shaded polygons. > >Forest Baskett >Silicon Graphics Well, it's not totally impossible. The following piece of Postscript code will do gouraud shaded triangles and squares (using gshadetri and gshaderect). No guarantees etc... /Stefan Farestam ................................................................. . Stefan Farestam <farestam@cerfacs.fr> . . __ __ __ _ _ _ . . / |_ )|_ /_\/ ( European Centre for Research and . . \_ |__\| / \__) Advanced Training in Scientific Computation . ................................................................. ----------------------------------------------------------------------- /xndef {2 mul -2 2 {-1 roll def} for} def /mxdef % (a0 | a1 | ... | an | /v | n) { /n1 exch def /n2 exch def 1 1 n2 {dup 1 sub n2 sub n1 mul neg add n1 neg roll n1 array astore} for n2 array astore def } def /xs % returns the current x scaling factor { gsave initmatrix 1 1 dtransform pop grestore 1 1 dtransform pop exch div } def /lpmm 1.0 def %lines per mm /gshadetri { gsave /m 3 3 mxdef m aload pop 2 copy 2 get exch 2 get gt {exch} if 3 1 roll 2 copy 2 get exch 2 get gt {exch} if 3 -1 roll 2 copy 2 get exch 2 get gt {exch} if aload pop /i0 /y0 /x0 3 xndef aload pop /i2 /y2 /x2 3 xndef aload pop /i1 /y1 /x1 3 xndef /d1 x0 x1 sub dup mul y0 y1 sub dup mul add sqrt def /d2 x0 x2 sub dup mul y0 y2 sub dup mul add sqrt def /d d1 d2 gt {d1} {d2} ifelse def i2 i0 eq { /q 99999999999999 def /x3 x2 x0 sub x1 add def /y3 y2 y0 sub y1 add def } { /q i1 i0 sub i2 i0 sub div def /x3 x2 x0 sub q mul x0 add def /y3 y2 y0 sub q mul y0 add def } ifelse /vox x3 x1 sub def /voy y3 y1 sub def /volen vox vox mul voy voy mul add sqrt def volen 0 ne { /vox vox volen div def /voy voy volen div def} if /cmax x3 x0 sub voy mul y3 y0 sub vox mul sub def /steps xs 25.4 72 div mul cmax mul lpmm mul abs def steps 0 eq {/steps 1 def} if /width cmax steps div def width abs 2.05 mul setlinewidth /ex vox d mul 2 mul def /dx voy width mul def /ey voy d mul 2 mul def /dy vox width mul neg def x0 ex 2 div sub y0 ey 2 div sub i0 i1 eq { i0 setgray clippath fill stroke } { i0 i1 i0 sub steps div i1 { setgray 2 copy moveto ex ey rlineto stroke dy add exch dx add exch } for } ifelse pop pop grestore } def /gshaderect { 9 copy gshadetri 12 6 roll gshadetri pop pop pop } def ----------------------------------------------------------------- % Example usage gsave clip % x y intensity % - - --------- 0.067 0.414 0.136 0.021 0.429 0.069 0.235 0.456 0.063 0.280 0.443 0.128 gshaderect grestore
andrew@foetus (Andrew Danne) (06/06/91)
In article <1991May22.115034.3987@ifi.unizh.ch> meyer@ifi.unizh.ch writes: >I wonder if anybody got one of these fancy Color Laser Copiers CLC500 from >Canon and managed it to connect it to an Iris using the SCSI interface? >Are there any drivers available, either public domain or commercial? >Any help will be appreciated. > >Urs > > >Urs Meyer ---------- meyer@ifi.unizh.ch, {uunet,...}!mcsun!cernvax!unizh!meyer >University of Zurich, Dept of Computer Science, Multimedia Lab, CH-8057 Zurich In answer to this, a company in Melbourne, Australia has a really good product that does this, built up as a commerical package that they programmed themselves. The company name is DOT PER INCH and the product is used in the pre and post-press market place. Contact :- John Mitchel in the Silicon Graphics Melbourne Office on (61) (3) 8828211 and he can give you the number for them. Cannon Australia also knows this company very well. The software is designed to run on all levels of the SGI product range. Mail me if you need further information.