#geogram #geometry #programming

Hello darkness my old friend ...

Diving into exact triangle intersection code, that is exactly bugged !

Revisiting the whole approach, hopefully much much simpler in the end

Hello darkness my old friend ...

Diving into exact triangle intersection code, that is exactly bugged !

Revisiting the whole approach, hopefully much much simpler in the end

You may think that once you have exact predicates it is piece of cake, but there is a surprisingly long list of particular cases: trlgs can be in the same plane, touch along a vrtx, an edge, isect can be a single point, a segment, a little triangle, it can even be a hexagon !

Seeing some light at the end of the tunnel... Seems that a reasonably short program can handle all the cases (but it does not fit in the margin, euuu I mean in a tweet !)

Is Blender useful for Architecture? You bet! I use it daily. So how is it useful for architecture? 🧵⬇ #blender3d #blender #blenderarchitecture #architecture #futurly #architecturedesign #parametric #conceptdesign #geometry #tools

⏳4592307816 Occurs at position 60 in π. It includes the ten numbers. 666 relating to 6x6x6=216. 216 relating to the diameter of the moon 2160 Miles. 351, 26th Triangular. 26 letters in the English alphabet. 60, a whole when taking about time. 22/7=3.14... 2083 the 314th prime⌛️

Hence the absolute need to get out of this voluntary submission system established for at least 300 years.

If you have any suggestions, put them below.

Be creative & let's brainstorm together to perhaps allow us to break these chains of oppression.

#Psychologicalreactance

⛎

If you have any suggestions, put them below.

Be creative & let's brainstorm together to perhaps allow us to break these chains of oppression.

#Psychologicalreactance

⛎

#Naturopathy

#Herbalism

#Phytotherapy

#Nutraceuticals

#AilanthusAltissima (Mill.) Swingle, 1916

False Japanese varnish, Ailante, Ailanth

« Dwarf Ailanthus is also sometimes nicknamed "the tree of hell" because of its invasive nature and the difficulty of eradicating it. »

#Herbalism

#Phytotherapy

#Nutraceuticals

#AilanthusAltissima (Mill.) Swingle, 1916

False Japanese varnish, Ailante, Ailanth

« Dwarf Ailanthus is also sometimes nicknamed "the tree of hell" because of its invasive nature and the difficulty of eradicating it. »

#geometry #programming

New #geogram tutorial on surface reconstruction from #pointsets:

github.com/BrunoLevy/geog…

New #geogram tutorial on surface reconstruction from #pointsets:

github.com/BrunoLevy/geog…

Coming next:

- remeshing

- parameterization and texture mapping

- remeshing

- parameterization and texture mapping

Daily Bookmarks to GAVNet 12/18/2021 greeneracresvaluenetwork.wordpress.com/2021/12/18/dai…

Why the Biden Presidency Feels Like Such a Disappointment

nytimes.com/2021/12/09/opi…

#PartisanPolitics, #CongressionalMajority, #MidTermElections, #FederalBudget

nytimes.com/2021/12/09/opi…

#PartisanPolitics, #CongressionalMajority, #MidTermElections, #FederalBudget

Why cannabis reeks of skunk

nature.com/articles/d4158…

#cannabis, #odor, #ChemicalCompounds, #sulphur, #ScientificDiscovery

nature.com/articles/d4158…

#cannabis, #odor, #ChemicalCompounds, #sulphur, #ScientificDiscovery

What do we get if we take the unit circle x² + y² = 1 and complexify it? We get the 3D object (manifold) in 4D space given by the equation

z² + w² = 1

where z, w are complex numbers. Here's one way to see its #geometry. (A slowmo animation to follow.) #calculus

z² + w² = 1

where z, w are complex numbers. Here's one way to see its #geometry. (A slowmo animation to follow.) #calculus

Here is a slow animation of how circles of various radii (centered at the origin) are transformed by the complexified circle function. #math #geometry #calculus

N.B., the reason we see two disconnected loops for the image of circles of small radii is one loop corresponds to the + and other to the - choices in the function u(r,θ). (And, yes, the function w is analytic.)

1/3 | Catriona (@Cshearer41) de 🇬🇧 UK, siempre reta a sus seguidores a resolver problemas de #Geometría.

Me topé con uno interesante(por su rareza) que fue resuelto de varias formas, y aquí le propongo otras dos soluciones

#Geometry #Mathematics

Me topé con uno interesante(por su rareza) que fue resuelto de varias formas, y aquí le propongo otras dos soluciones

#Geometry #Mathematics

2/3 | Traza BH y FI perpendiculares a BF, luego CM tal que <CMF=BHI, luego se descubren los triángulos congruentes, y la región pedida se convierte en una región trapecial

#Geometry #Mathematics #Geometria

#Geometry #Mathematics #Geometria

3/3 Traza FH=6 perpendicular a BF, luego los triángulos BFC y JFG son congruentes y GJ resulta paralelo e igual a AB, y los triángulos ABH y GJH son congruentes, y la región pedida se convierte en una región triangular

#Geometry #Mathematics #Geometria

@threadreaderapp unroll

#Geometry #Mathematics #Geometria

@threadreaderapp unroll

Daily Bookmarks to GAVNet 12/01/2020 greeneracresvaluenetwork.wordpress.com/2020/12/01/dai…

A New AI Study May Explain Why Deep Learning Works | Psychology Today

psychologytoday.com/us/blog/the-fu…

#learning #deep #psychology

psychologytoday.com/us/blog/the-fu…

#learning #deep #psychology

Daily Bookmarks to GAVNet 07/27/2020 greeneracresvaluenetwork.wordpress.com/?p=6194

CT scans might offer a more accurate way to diagnose Covid-19 - STAT

statnews.com/2020/04/16/ct-…

#COVID19 #coronavirus #scans #testing

statnews.com/2020/04/16/ct-…

#COVID19 #coronavirus #scans #testing

Daily Bookmarks to GAVNet 7/02/2020-2

greeneracresvaluenetwork.wordpress.com/2020/07/02/dai…

Nathaniel Cline and Nathan Tankus: Fiscal Systems, Organizational Capacity, and Crisis: A Political Balance of Payments Approach

nakedcapitalism.com/2013/05/nathan…

#crisis #payments #balance #systems #capitalism #capacity

greeneracresvaluenetwork.wordpress.com/2020/07/02/dai…

Nathaniel Cline and Nathan Tankus: Fiscal Systems, Organizational Capacity, and Crisis: A Political Balance of Payments Approach

nakedcapitalism.com/2013/05/nathan…

#crisis #payments #balance #systems #capitalism #capacity

We might finally know why the coronavirus spread is out of control again

bgr.com/2020/06/30/cor…

#coronavirus #spread

bgr.com/2020/06/30/cor…

#coronavirus #spread

Did protests drive more Covid-19 cases? New research reveals a surprising answer

inverse.com/mind-body/covi…

#COVID19Cases #research #protests

inverse.com/mind-body/covi…

#COVID19Cases #research #protests

Daily Bookmarks to GAVNet 6/27/2020-2

greeneracresvaluenetwork.wordpress.com/2020/06/27/dai…

New Geometric Perspective Cracks Old Problem About Rectangles

quantamagazine.org/new-geometric-…

#geometry #perspective

greeneracresvaluenetwork.wordpress.com/2020/06/27/dai…

New Geometric Perspective Cracks Old Problem About Rectangles

quantamagazine.org/new-geometric-…

#geometry #perspective

Detecting Regions At Risk for Spreading COVID-19 Using Existing Cellular Wireless Network Functionalities - IEEE Journals & Magazine

ieeexplore.ieee.org/document/91170…

#detection #network #coronavirus #regions #wireless #cellular

ieeexplore.ieee.org/document/91170…

#detection #network #coronavirus #regions #wireless #cellular

greeneracresvaluenetwork.wordpress.com/2020/06/07/dai…

The 3-D Printer That Could Finally Change Manufacturing | MIT Technology Review

technologyreview.com/2017/04/25/485…

#printer #manufacturing #technology

The 3-D Printer That Could Finally Change Manufacturing | MIT Technology Review

technologyreview.com/2017/04/25/485…

#printer #manufacturing #technology

Thread by @isabelrodbar: Are SARS-CoV-2 seroprevalence estimates biased?

threadreaderapp.com/thread/1267195…

#estimates

threadreaderapp.com/thread/1267195…

#estimates

The Great Stagnation—or Decline and Fall? - Intercollegiate Studies Institute: Think. Live Free.

isi.org/modern-age/the…

#civilization #fall #decline

isi.org/modern-age/the…

#civilization #fall #decline

For any subset A of a topological space X, there are no more than 14 sets that can be formed from A using the closure and complement operations. The complement of B is B' = X-B. Closure C(B) = smallest closed set containing B. (Neat problem from Kelley's General #Topology.) #math

There's a lemma that helps one show this. Letting C(A) denote the closure of A, and N(A) the complement of A, we can prove:

Lemma: for all sets A, one has the equation

CNC N CNC(A) = CNC(A).

Lemma: for all sets A, one has the equation

CNC N CNC(A) = CNC(A).

The result follows from the semigroup with identity I generated by 2 elements N and C such that N² = I, C² = C, and CNCNCNC = CNC. Its 14 elements are:

I N C NC CN NCN CNC CNCN NCNC

NCNCN CNCNC CNCNCN NCNCNC NCNCNCN.

Should have nice matrix representation. #math

I N C NC CN NCN CNC CNCN NCNC

NCNCN CNCNC CNCNCN NCNCNC NCNCNCN.

Should have nice matrix representation. #math