Grasshopper

algorithmic modeling for Rhino

LOSBOS
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Construct Plane
2 Replies

Hi everybody,I'm new in GS and Rhino, and I always do comparison between GS and CAD Softwares like AutoCAD.I need to add a construct plane and draw on it. But when I put points and lines, it's always…Continue

Started this discussion. Last reply by martyn hogg Jan 25, 2014.

Shape of Arch Dam

Hi everybody,I research any documents concerning the special shapes of arch concrete dams.Generally the downstream and upstream shapes are based on logarithmic spiral and I think GS is very…Continue

Started Jan 15, 2014

3D Logarithmic Spiral Surface
4 Replies

Hi every body,I just discover this wonderful software and I already love it !My first challenge is to make a 3d parametric surface :I'll try to explain :- It's a spiral equation based on polar…Continue

Tags: surface, spirale, 3D

Started this discussion. Last reply by LOSBOS Jan 11, 2014.

 

LOSBOS's Page

Latest Activity

Rémy Maurcot replied to LOSBOS's discussion Spiral 3D in the group Grasshopper French Users Group
"Bonjour si vous parlez de voûte à spirale logarithmique utilisé pour la définition des parements d'un barrage, malheureusement cela ne peut être résout qu’avec des composants natifs de grasshopper,…"
May 5, 2014
martyn hogg replied to LOSBOS's discussion Construct Plane
"In rhino... VIEW >> CHANGE CONSTRUCTION PLANE or something like that, then there are various ways of aligning the CPlane In GH. Geometry often needs a base plane which you can define in many different ways."
Jan 25, 2014
David Rutten replied to LOSBOS's discussion Construct Plane
"Moved from FAQ into Discussion. -- David Rutten david@mcneel.com"
Jan 24, 2014
LOSBOS posted a discussion

Construct Plane

Hi everybody,I'm new in GS and Rhino, and I always do comparison between GS and CAD Softwares like AutoCAD.I need to add a construct plane and draw on it. But when I put points and lines, it's always in reference to the general plane.So ma question is : How to draw in a new construct plan ?Thanks a lot.See More
Jan 23, 2014
LOSBOS replied to Rémy Maurcot's discussion Arch Dam with GH & Python
"Hi Remy, I understand that these datas are confidential. For my job I only want to have a shape which looks "real". It was for me the opportunity to use GS to generate this kind of shape and to learn parametric software with a true…"
Jan 20, 2014
LOSBOS replied to Rémy Maurcot's discussion Arch Dam with GH & Python
"Hi Remy, It's a very nice job ! I just discover GS and the possibilities to create complex 3D model are infinite. I try to do my first development by designed an archdam too. I use the "Guide for preliminary design of Arch dams" by…"
Jan 18, 2014
LOSBOS posted a discussion

Arch dam shapes

Hi everybody,I research any documents concerning the special shapes of arch concrete dams.Generally the downstream and upstream shapes are based on logarithmic spiral and I think GS is very appropriate to define a parametric approch to this shape design. I have already tested GS with 3d spiral, it's looks great, but my model haven't the real design of existing dam because of my lack of datas.So if you have any documents about arch dam geometry, GS developpements, that you can share, i will be…See More
Jan 15, 2014
LOSBOS replied to LOSBOS's discussion Spiral 3D in the group Grasshopper French Users Group
"Merci beaucoup, je teste"
Jan 14, 2014
Systemiq replied to LOSBOS's discussion Spiral 3D in the group Grasshopper French Users Group
"Il suffit d'utiliser, par exemple, le composant Range pour créer N valeurs entre 0 et 180, et d'utiliser la sortie de ce composant à la place du slider Z elevation. Le graft en sortie est important."
Jan 14, 2014
LOSBOS added a discussion to the group Grasshopper French Users Group
Thumbnail

Spiral 3D

Bonjour à tous et merci de m'accueillir sur ce forum francophone.J'exerce dans le domaine du génie civil où je suis souvent amené à travailler sur des surfaces 3d originales tel que des voûtes à double courbures.Pour faire simple, il s'agit en plan de courbes de types portion de spirales, de paraboles, d'hyperboles, voire même d'ellipses. L'équation d'une de ces courbes est fonction de z, ce qui fait que pour chaque z, on obtient une équation spécifique (car fonction de z).La surface définitive…See More
Jan 14, 2014
LOSBOS replied to LOSBOS's discussion 3D Logarithmic Spiral Surface
"Ok I will try the graft tool"
Jan 11, 2014
LOSBOS replied to LOSBOS's discussion 3D Logarithmic Spiral Surface
"Many thanks for your answer  . It looks very nice but the polar radius is a function of z2 and z3 so the progression on z axis is not linear.  That s why I try to generate a spiral at different elevation and make a surface linked on all…"
Jan 10, 2014
Igor replied to LOSBOS's discussion 3D Logarithmic Spiral Surface
" ....or like this..."
Jan 10, 2014
Igor replied to LOSBOS's discussion 3D Logarithmic Spiral Surface
" You need Graft the z-input in Point tool(right click), but you can construct a spiral with one z coordinate and then Extrude(Surface tab) alond z vector..."
Jan 10, 2014
LOSBOS posted a discussion

3D Logarithmic Spiral Surface

Hi every body,I just discover this wonderful software and I already love it !My first challenge is to make a 3d parametric surface :I'll try to explain :- It's a spiral equation based on polar coordinates (teta,R) .- R is define with z value.I fixed the domain for teta (0 to 720° for ie)I fixed the domain for z (0 to 200 for ie)X=R cos (teta)Y=R sin (teta)Z : 0 to 200 step of 1So to resume, for each z, I have a spiral curve define on 2d (parallele to XY plane)This spiral evolves from z=0 to…See More
Jan 10, 2014

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