#thinsection — Public Fediverse posts

Recursive polygon subdivision, part 2

Here the seed polygon (40-gon) is recursively cut using sweeping perpendicular lines and the resulting number of polygons varies greatly depending on the position of these cuts (combined with a configured minimum poly target area). The area of each polygon is mapped to a color from a predefined gradient.

Live demo (slowed down to better observe the algorithm):
https://demo.thi.ng/umbrella/poly-subdiv/

Commented source code:
https://github.com/thi-ng/umbrella/blob/develop/examples/poly-subdiv/src/index.ts

2/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #Recursion #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision, part 2

Here the seed polygon (40-gon) is recursively cut using sweeping perpendicular lines and the resulting number of polygons varies greatly depending on the position of these cuts (combined with a configured minimum poly target area). The area of each polygon is mapped to a color from a predefined gradient.

Live demo (slowed down to better observe the algorithm):
https://demo.thi.ng/umbrella/poly-subdiv/

Commented source code:
https://github.com/thi-ng/umbrella/blob/develop/examples/poly-subdiv/src/index.ts

2/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #Recursion #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision, part 2

Here the seed polygon (40-gon) is recursively cut using sweeping perpendicular lines and the resulting number of polygons varies greatly depending on the position of these cuts (combined with a configured minimum poly target area). The area of each polygon is mapped to a color from a predefined gradient.

Live demo (slowed down to better observe the algorithm):
https://demo.thi.ng/umbrella/poly-subdiv/

Commented source code:
https://github.com/thi-ng/umbrella/blob/develop/examples/poly-subdiv/src/index.ts

2/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #Recursion #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision, part 2

Here the seed polygon (40-gon) is recursively cut using sweeping perpendicular lines and the resulting number of polygons varies greatly depending on the position of these cuts (combined with a configured minimum poly target area). The area of each polygon is mapped to a color from a predefined gradient.

Live demo (slowed down to better observe the algorithm):
https://demo.thi.ng/umbrella/poly-subdiv/

Commented source code:
https://github.com/thi-ng/umbrella/blob/develop/examples/poly-subdiv/src/index.ts

2/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #Recursion #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision, part 2

Here the seed polygon (40-gon) is recursively cut using sweeping perpendicular lines and the resulting number of polygons varies greatly depending on the position of these cuts (combined with a configured minimum poly target area). The area of each polygon is mapped to a color from a predefined gradient.

Live demo (slowed down to better observe the algorithm):
https://demo.thi.ng/umbrella/poly-subdiv/

Commented source code:
https://github.com/thi-ng/umbrella/blob/develop/examples/poly-subdiv/src/index.ts

2/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #Recursion #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision inspired by thin-section mineralogy...

(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)

1/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision inspired by thin-section mineralogy...

(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)

1/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision inspired by thin-section mineralogy...

(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)

1/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision inspired by thin-section mineralogy...

(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)

1/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #AlgorithmicArt #ThingUmbrella #TypeScript

Recursive polygon subdivision inspired by thin-section mineralogy...

(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)

1/2

#TextureTuesday #ThinSection #Geometry #Polygon #Subdivision #AlgorithmicArt #ThingUmbrella #TypeScript

Mineral Monday! Is it glaucophane, chloritoid, or blue-green amphibole in Dutchess Co. NY? See our other social media feeds for more. By Donna Whitney et al. #MSACommunications #MineralMonday #thinsection #glaucophane #chloritoid #amphibole #DutchessCounty

Mineral Monday! Is it glaucophane, chloritoid, or blue-green amphibole in Dutchess Co. NY? See our other social media feeds for more. By Donna Whitney et al. #MSACommunications #MineralMonday #thinsection #glaucophane #chloritoid #amphibole #DutchessCounty

Mineral Monday! Is it glaucophane, chloritoid, or blue-green amphibole in Dutchess Co. NY? See our other social media feeds for more. By Donna Whitney et al. #MSACommunications #MineralMonday #thinsection #glaucophane #chloritoid #amphibole #DutchessCounty

Mineral Monday! Is it glaucophane, chloritoid, or blue-green amphibole in Dutchess Co. NY? See our other social media feeds for more. By Donna Whitney et al. #MSACommunications #MineralMonday #thinsection #glaucophane #chloritoid #amphibole #DutchessCounty

Mineral Monday! Presented here is a selection from Steinbilder (“Rock Pictures”), a series of digitally-worked abstract artworks by Roger Mitchell, using petrological images as a starting point. #MSACommunications #MineralMonday #thinsection #art #abstractart

Mineral Monday! Presented here is a selection from Steinbilder (“Rock Pictures”), a series of digitally-worked abstract artworks by Roger Mitchell, using petrological images as a starting point. #MSACommunications #MineralMonday #thinsection #art #abstractart

Did some more brainstorming about a title for this project/piece and have settled on STRATA for now — these emerging structures/fragments very much remind me of them (rock strata and/or thin section microscopy) and the many folds & cross-stratifications observed on my hikes over the past few years have been a regular inspiration to keep working on this project...

Also see:

- https://mastodon.thi.ng/@toxi/111173324137924265
- https://mastodon.thi.ng/@toxi/109931051187422957

#STRATA #CellularAutomata #GenerativeArt #Art #Abstract #Texture #ALife #Geology #ThinSection #Simulation #NoAI

One more resource before #MinCup23 voting starts: during the pandemic we discovered the http://www.alexstrekeisen.it/ site run by Alessandro Da Mommio (in Italian and English). It's chock-full of sample and thin section photos, well organized.

Blue #sapphirine is well represented: here a reaction texture between sillimanite and cordierite, in thin section.

#mineralogy #thinSection #photography

One more resource before #MinCup23 voting starts: during the pandemic we discovered the http://www.alexstrekeisen.it/ site run by Alessandro Da Mommio (in Italian and English). It's chock-full of sample and thin section photos, well organized.

Blue #sapphirine is well represented: here a reaction texture between sillimanite and cordierite, in thin section.

#mineralogy #thinSection #photography

One more resource before #MinCup23 voting starts: during the pandemic we discovered the http://www.alexstrekeisen.it/ site run by Alessandro Da Mommio (in Italian and English). It's chock-full of sample and thin section photos, well organized.

Blue #sapphirine is well represented: here a reaction texture between sillimanite and cordierite, in thin section.

#mineralogy #thinSection #photography

One more resource before #MinCup23 voting starts: during the pandemic we discovered the http://www.alexstrekeisen.it/ site run by Alessandro Da Mommio (in Italian and English). It's chock-full of sample and thin section photos, well organized.

Blue #sapphirine is well represented: here a reaction texture between sillimanite and cordierite, in thin section.

#mineralogy #thinSection #photography

#Sapphirine has a complicated structure, with Mg in two sites and Al both four-fold and six-fold coordinated. It has only about 15 wt% SiO2.

It has monoclinic symmetry, but still can form attractive crystal faces when it can grow unimpeded. A good example is on the cover of Dexter Perkin’s on-line mineralogy text, found at:
https://opengeology.org/Mineralogy/

In polarized light, sapphirine changes color with orientation (called pleochroism).

#MinCup23 #Minerals #Mineralogy #ThinSection

#Sapphirine has a complicated structure, with Mg in two sites and Al both four-fold and six-fold coordinated. It has only about 15 wt% SiO2.

It has monoclinic symmetry, but still can form attractive crystal faces when it can grow unimpeded. A good example is on the cover of Dexter Perkin’s on-line mineralogy text, found at:
https://opengeology.org/Mineralogy/

In polarized light, sapphirine changes color with orientation (called pleochroism).

#MinCup23 #Minerals #Mineralogy #ThinSection

#Sapphirine has a complicated structure, with Mg in two sites and Al both four-fold and six-fold coordinated. It has only about 15 wt% SiO2.

It has monoclinic symmetry, but still can form attractive crystal faces when it can grow unimpeded. A good example is on the cover of Dexter Perkin’s on-line mineralogy text, found at:
https://opengeology.org/Mineralogy/

In polarized light, sapphirine changes color with orientation (called pleochroism).

#MinCup23 #Minerals #Mineralogy #ThinSection

#Sapphirine has a complicated structure, with Mg in two sites and Al both four-fold and six-fold coordinated. It has only about 15 wt% SiO2.

It has monoclinic symmetry, but still can form attractive crystal faces when it can grow unimpeded. A good example is on the cover of Dexter Perkin’s on-line mineralogy text, found at:
https://opengeology.org/Mineralogy/

In polarized light, sapphirine changes color with orientation (called pleochroism).

#MinCup23 #Minerals #Mineralogy #ThinSection

Having fun with microscope!
#geology #microscopy #paleontology #thinsections #thinsection