Author Topic: Vector Rendering  (Read 2930 times)

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SEANT

  • Bull Frog
  • Posts: 338
Vector Rendering
« on: November 01, 2019, 02:34:16 AM »
Iíve always been a big fan of rendering.  I used to do a bit of full color rendering back in the 3ds Max R3 era Ė not so much anymore.  Mostly line work (or programming) these days.

In addition to the raster oriented full colors renderings, I also a fan of 2d vector rendering.  The look and performance of such renderings are compelling.  The crisp details, the scalability Ė Iíve always felt there was a place for them in the CAD world.

Over the past 15 years or so (not very speedy, but I am tenacious), Iíve given the process some attention.   Here is a demo of the current state of the effort.  Still a long way to go Ė lots of tweaks, optimization, and UI work remain.

As can be seen in the screencast, Iím concentrating on B&W.  That has the most applicability in my workflow.  I suppose, though, that color could be beneficial and may be something I devote more time to in the future.

The computational process used certainly favors the parallel nature of outdoor lighting.  As a matter of fact, diffuse and multi point lighting may be intractable. 

Even with the limited light source, these renderings do require serious processing Ė hence the simplicity of the scene.  Iíll post more complex renders as they become available.

https://knowledge.autodesk.com/community/screencast/09614848-7e64-4fa8-b6fd-f3428f7a89ee



Sean Tessier
AutoCAD 2016 Mechanical

SEANT

  • Bull Frog
  • Posts: 338
Re: Vector Rendering
« Reply #1 on: November 13, 2019, 02:52:32 PM »
Hereís a layout with a little more meat on the bones.  Another pergola, but this one uses a partial hyper/parabolic canopy to enhance viewer interest.  :roll:
Sean Tessier
AutoCAD 2016 Mechanical

SEANT

  • Bull Frog
  • Posts: 338
Re: Vector Rendering
« Reply #2 on: November 13, 2019, 02:55:05 PM »
This is another view of the same model.  My renderer was glitching like a bastard, so the print needed some post work.  I may have gotten carried away.
Sean Tessier
AutoCAD 2016 Mechanical

nobody

  • Swamp Rat
  • Posts: 822
  • .net stuff
Re: Vector Rendering
« Reply #3 on: February 21, 2020, 05:14:28 AM »
Manga artists would love you


Iíve always been a big fan of rendering.  I used to do a bit of full color rendering back in the 3ds Max R3 era Ė not so much anymore.  Mostly line work (or programming) these days.

In addition to the raster oriented full colors renderings, I also a fan of 2d vector rendering.  The look and performance of such renderings are compelling.  The crisp details, the scalability Ė Iíve always felt there was a place for them in the CAD world.

Over the past 15 years or so (not very speedy, but I am tenacious), Iíve given the process some attention.   Here is a demo of the current state of the effort.  Still a long way to go Ė lots of tweaks, optimization, and UI work remain.

As can be seen in the screencast, Iím concentrating on B&W.  That has the most applicability in my workflow.  I suppose, though, that color could be beneficial and may be something I devote more time to in the future.

The computational process used certainly favors the parallel nature of outdoor lighting.  As a matter of fact, diffuse and multi point lighting may be intractable. 

Even with the limited light source, these renderings do require serious processing Ė hence the simplicity of the scene.  Iíll post more complex renders as they become available.

https://knowledge.autodesk.com/community/screencast/09614848-7e64-4fa8-b6fd-f3428f7a89ee

SEANT

  • Bull Frog
  • Posts: 338
Re: Vector Rendering
« Reply #4 on: February 21, 2020, 05:41:59 AM »
Manga artists would love you




Really! I hadn't thought about that trade as a potential market.  Sounds interesting though.

My initial notion was as an alternative to full color architectural renderings - the type that requires expensive glossy paper and high end printers to convey the best hardcopy information. 

The vector renders could be printed alongside the 2d plans.  Perhaps during the initial concept phase.  Let the pricier, full color renders accompany the final sale sets.

Quite frankly, I'm not exactly sure there is any market at all for this limited type of rendering.  Doing the programming was entertaining.  That's good enough for the time being.

Currently working on code that allows the process to handle Blocks/Xrefs.
Sean Tessier
AutoCAD 2016 Mechanical

MickD

  • Gator
  • Posts: 3422
  • (x-in)->[process]->(y-out)
Re: Vector Rendering
« Reply #5 on: February 21, 2020, 03:31:35 PM »
Nice work Sean!
Forth is like the Tao: it is a Way, and is realized when followed.
Its fragility is its strength; its simplicity is its direction - Michael Ham

Lao Tzu: ďTo attain knowledge, add things
every day; to obtain wisdom, remove things every day.Ē

SEANT

  • Bull Frog
  • Posts: 338
Re: Vector Rendering
« Reply #6 on: February 22, 2020, 04:46:22 AM »
Thanks Mick. 

And I hope to keep work progress nice and steady - a 'theswamp.org' hallmark. 

Or, A scant 15 more years should have this project ready for public consumption. :yes:
Sean Tessier
AutoCAD 2016 Mechanical

SEANT

  • Bull Frog
  • Posts: 338
Re: Vector Rendering
« Reply #7 on: May 24, 2020, 11:48:15 AM »
The work Iím doing now for this rendering process reminds me of the tricks that were required in the old Scanline rendering days.  Here, I pre-make assets to speed up the process, hopefully without compromising the results.

These Xref assets require additional work beyond what would be optimum for modeling/detailing but, as assets, can be reused for other projects.  Especially something like trees.  And, regarding the trees, the Xref file contains a shadow mask (Region).  That mask needs to be transformed accordingly, but that is still way more efficient than processing the insane number of facets required for the leaves. 

Iíve included the base AutoCAD file to illustrate the intermediate step in the rendering process.  Upon examination youíll notice that some of the shadow processing is done via the PDF Printer Z buffering.  Which is to say that ground shadows are masked by Shading, which is in turn masked by object shadowing.  One benefit to that is the ability to render the scene objects via separate passes.

There is still a bit of glitching, as can be seen in the PDF at the slide and for one of the tree shadows.  Iím still tweaking a function or two.  Plus, the whole user interface is still quite horrendous, as can be seen in the screencast.

https://knowledge.autodesk.com/community/screencast/fb57a2d0-7a9f-4692-a05a-f8b3d3123989


Sean Tessier
AutoCAD 2016 Mechanical