Manifold Community Site: resolution in Manifold 9 vs. Manifold 8

RE: resolution in Manifold 9 vs. Manifold 8

artlembo — Fri, 10 Oct 2025 15:57:41 GMT

One of the reasons I think Manifold 9 is so fast at displaying objects is that they resample the graphics. That seems to allow a faster draw, but it also makes some compromises for screen resolution.

For example, see these two drawings of water features

using this screen display to make a nice cartographic map is not sufficient with Manifold 9, compared to Manifold 8. I remember when 9 was in a beta mode many years back, you could change the way the graphics would be drawn on the screen. Is there a way to improve the graphic display of the objects? If not, I'll have to revert back to Manifold 8 to make a nice looking map.

if you click on the map, you'll see what I mean...

Attachments:
hydro.jpg

RE: resolution in Manifold 9 vs. Manifold 8

oeaulong — Fri, 10 Oct 2025 17:12:24 GMT

Art, I remember v8 used to optimize the vector drawing for speed and would do some sort of "coarse-ification" or simplification for the display if the Options checkbox was engaged.

Could it be that there is a default non-hairline outline (of some thickness) that is getting rendered in v9? Perhaps this is part of the default Tools-Options settings for normal optimization (anti-aliasing, etc.) ?

(brainstorming for discussion without implying an answer)

-Oeaulong

RE: resolution in Manifold 9 vs. Manifold 8

Mike Pelletier — Mon, 13 Oct 2025 14:41:18 GMT

I recall some discussion early in the creation of 9 about why it is generally sharper than 8, but can't remember why. My experience has been that this the case and it was one of the reasons I switched to 9. Does your hydro example print/export at the coarser resolution at that scale?

RE: resolution in Manifold 9 vs. Manifold 8

lionel — Wed, 29 Oct 2025 14:39:13 GMT

after look the 2 pictures , the best result will be a sum of the 2 pictures !

Hope manifold team ll add more paramaters algo to achieve the best result !