CompuServe Thread

#3DS render like plotter?

14 messages in this thread
#122077From: Carlton NewtonSep 4, 1994 8:36 PM
I am trying to get my wireframe renders in 3DS r3 to print out with crispness of a plotter and I need some help. I'm trying to emulate an earlier body of my artwork in which I used a CAD program to output wireframes to a Protracer C size inkjet plotter/printer using HPGL. The plotter's max resolution is 360 dpi and can be configured to print HPGL or Postscript. These earlier drawings were very crisp with clean jet black lines. I used different pen line settings to acheive different line widths and the resulting images looked very graphic, very much like wood block prints with saturated wide black lines. When I render my wire frames materials of varying thicknesses in 3DS I render out to 640X480 gif, tga, or tif; and I take the images into Photostyler to print. I've tried resampling, and resizing, but Pstyler wants to antialias the lines and the edges become fuzzy when they are printed with the Postscript emulation card on the Protracer printer/plotter. Does anyone have any ideas on how to accomplish the look I'm after? Also how does one have 3DS render to a higher resolution than 640×480? I've looked in my vibcfg file and cant call up anything with higher res. Can I set 3DS to output to a plotter that uses HPGL? I'm on a deadline here, and this afternoon while looking up some stuff in the manual I lost an hour reading about some features I didn't know about (g). I gotta stay away from that manual! Seriously though, I saw the section on other drivers for output but didn't really understand it. Any help or suggestions greatly appreciated. Thanks, Carlton
#122092From: Michael WendellSep 4, 1994 11:35 PM
3DS cannot output vector data to a plotter like a CAD program can. You can render your wireframes (or anything else) to higher resolutions for output to your Protracer by rendering to a null video display and setting the resolution manually, both settings are in Renderer/Setup in the 3D Editor. For that type of output though, you're probably better off sending your model back to AutoCAD and plotting to HPGL directly. Be aware that the disk files you'll need to generate for the output quality you're used to are going to be enormous. m.
#122098From: Carlton NewtonSep 5, 1994 12:19 AM
Michael Thanks for the reply. Those enormous files are what I'm experiencing. I just wanted to make sure that I wasn't missing something. Carlton
#122142From: ALAN IGLESIASSep 5, 1994 9:16 AM
In addition to what Michael said, You could try rendering to a fairly high resolution (say, 1k-2k lines, and you'll need to use the NULL driver in Render/Configuration/Setup to render to a higher resolution than your video driver) and import it into CorelTrace, where you can use centerline mode. This will give you a pretty clean vector file from which you may plot easily, especially if your plotter has a Windows driver. Hope this helps, -Alan
#122149From: Carlton NewtonSep 5, 1994 10:33 AM
Alan- In my prior post I assumed CorelTrace was a module in Corel Draw. Is it? Or is it a seperate Corel program. Thanks Again, Carlton
#122226From: Yost GroupSep 5, 1994 7:57 PM
Last time I looked, it was both. That is, there was a subset in Corel Draw plus a more fully featured utility that was bundled with the software.
#122230From: Carlton NewtonSep 5, 1994 8:09 PM
I'll check it out. Tonight I'll try ACAD r12. Thanks, Carlton
#122239From: ALAN IGLESIASSep 5, 1994 8:37 PM
The Yost Group has your answer, Carlton. I was definitely refering to the seperate module, CorelTrace, which works pretty decently in Centerline mode on clean, high-res black line art-on-white bitmaps. -Alan
#122153From: Carlton NewtonSep 5, 1994 10:41 AM
Thanks Alan, I don't have Corel. Any other ideas for conversion from bitmap to vector? By the way does Corel support HPGL? I guess I'll see if my plotting service will plot from my 3DS DXF file. Or I could reload Autocad (sigh). Carlton
#122240From: ALAN IGLESIASSep 5, 1994 8:37 PM
Autocad might be the answer for you then, unless you can get someone to bring your 3DS-generated .DXF file into a vector-oriented program and plot it for you. -Alan
#122275From: Carlton NewtonSep 5, 1994 11:52 PM
I reloaded Acad and it worked like a charm. I'd had mixed results converting dxf to and from 3DS using another CAD program and I began to suspect dxf. Again and again the stability of 3DS impresses me. 3DS has me spoiled. Now of course I want to call around to post houses to see how crisp a rendered image with a wire frame material I can get. I plan to look into Corel trace. BTW, Its nice to make your acquaintance. I've been lurking and filing your suggestions for so long I should acknowledge all your good advice. Many thanks, Carlton
#122297From: ALAN IGLESIASSep 6, 1994 8:39 AM
Thanks for the nice words, Carlton. Here's a thought: If you rendered a large (say, 4k) file using Wire Frame materials on a white backround, you will get pretty decent results plotting to an ink-jet plotter like the HP 650C from a standard Windows app like PhotoShop or CorelDraw. It would have to be seen just how large a plot you could make before pixelization starts to set in, but I'm sure it would look nice up to a fairly decent size. -Alan
#122191From: Jamie Clay [DPh]Sep 5, 1994 2:42 PM
If you still have your CAD application, (Like AutoCAD or AcadLT), I 3DS you can easily create DXF (Save .DXF) files of your 3D Models and DXFIN them to the CAD package then plot them from there – and with either of the ACADs you add hidden line removal to the plot as well. J-me
#122207From: Carlton NewtonSep 5, 1994 4:27 PM
Thanks Jamie, I've got ACAD r12, but I took it off my HD months ago to free up some more space. I had a bear of a time configuring it to run on my Gateway the first time, and I haven't missed it since I got 3DSr3. I guess its time to reload and feed the machine all those floppies. (g) Carlton Thanks Jamie, I've got ACAD r12, but I took it off my HD months ago to free up some more space. I had a bear of a time configuring it to run on my Gateway the first time, and I haven't missed it since I got 3DSr3. I guess its time to reload and feed the machine all those floppies. (g) Carlton