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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170


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jotero
Joined: 27 Jan 2007 Posts: 153 Location: Germany Hannover

Posted: Mon Aug 17, 2009 5:24 am Post subject: 


hello all
hi abdelhamid,
very interesting work from you! You are welcome
ciao
torolf _________________ Kontakte 

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nextstep Site Admin
Joined: 06 Jan 2007 Posts: 539

Posted: Wed Aug 19, 2009 8:14 pm Post subject: 


Hi all;
Welcome Abdelhamid and keep up the good work
Sorry for my late response.
I was also impressed by the work of Abdelhamid he sent me by email and asked him to subscribe in the forum to share it with others.
You can use the language of your choice Abdelhamid and I'll try to translate if you choose the Arabic _________________ Cheers,
Abderrahman 

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inode
Joined: 27 Jan 2007 Posts: 127 Location: Austria

Posted: Thu Oct 22, 2009 11:43 am Post subject: 


Hi abdelhamid
As I see your surface collection is growing and growing...
Really nice work!
The 2 helix surfaces are some basics.
Please can you publish the formulars of this Helix and the Double Helix. 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Thu Oct 22, 2009 6:29 pm Post subject: The Helix 


hi all , hi my friend inode
the Helix :
Code:  F(x,y,z)=(sqrt(x^2+y^2)3)^2 +(atan2((y*cos(2*z)x*sin(2*z)),(x*cos(2*z)+y*sin(2*z)))/2 )^2 1
x:[4,4] and y:[4,4] and z:[6,6] 
the Double Helix :
Code:  F(x,y,z)=(sqrt(x^2+y^2)  3)^2+ ( atan((y*cos(z)x*sin(z))/(x*cos(z)+y*sin(z))) )^2 1
x:[4,4] and y:[4,4] and z:[6,6] 
Generally
u = x * cos (n * z) + y * sin (n * z) and v = y * cos (n * z)x * sin (n * z)
and
(sqrt (x^ 2 + y^ 2)a) ^ 2 + (atan2 (v, u)/n) ^ 2R ^ 2 = 0
a, n : real numbers
More generally Writing :
f( sqrt (x^ 2 + y^ 2)a , atan2(v,u)/n )=0
For example :
abs( sqrt(x^2+y^2)a )+abs( atan2(v,u)/n )b=0 or
( (sqrt(x^2+y^2)a)/b )^100+( atan2(v,u)/(n*b) )^1001=0 .....Etc
Last edited by abdelhamid belaid on Mon May 03, 2010 10:06 pm; edited 6 times in total 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Mon Mar 15, 2010 8:57 pm Post subject: 


Hello my dear friends
I hope you like:
Last edited by abdelhamid belaid on Thu Mar 31, 2011 1:39 am; edited 4 times in total 

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nextstep Site Admin
Joined: 06 Jan 2007 Posts: 539

Posted: Wed Mar 17, 2010 8:40 am Post subject: 


Hi Abdelhamid,
That's a wonderful structure and you are a master of the CSG (Constructive Solid Geometry) . For those who don't know it, Abdelhamid has a lot of great realisation with K3DSurf and a solid background in mathematics (university degree). We hope you all the best in your carrier and thank you again or sharing with us some of your work. _________________ Cheers,
Abderrahman 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Sat Mar 20, 2010 5:29 pm Post subject: 


hi all
Sometimes I can not believe myself:
I would say k3dsurf is not just a computer program and is not just for drawing but it is a new part of mathematics, it is amazing thank you very much Taha.
Last edited by abdelhamid belaid on Sun May 19, 2013 4:15 pm; edited 4 times in total 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Tue Mar 23, 2010 5:21 pm Post subject: 


hi all
Last edited by abdelhamid belaid on Sun May 19, 2013 4:16 pm; edited 2 times in total 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Thu Mar 25, 2010 11:44 am Post subject: 


hi all,
a gesture to nature with k3DSurf...
Last edited by abdelhamid belaid on Sun May 19, 2013 4:22 pm; edited 2 times in total 

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nextstep Site Admin
Joined: 06 Jan 2007 Posts: 539

Posted: Fri Mar 26, 2010 7:09 pm Post subject: 


Hi abdelhamid,
That's a very original and exciting idea: a "dead nature" 3D painting with K3DSurf . It still need only some good apples to make it real...
Here is a good starting point for an apple looking isosurface (still need some work on the shape and the leaf )
Quote: 
Name: IsoApple
F(): (sqrt((x*x+y*y)/((z+6)/5))1.3)^2 + z*z/4 1.7
[x]: 3 , 3
[y]: 3 , 3
[z]: 3 , 3
;

Keep up the good work _________________ Cheers,
Abderrahman 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Sun Mar 28, 2010 2:59 pm Post subject: 


Hi all, and thank you Taha
just a bush
Last edited by abdelhamid belaid on Sun May 19, 2013 4:23 pm; edited 5 times in total 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Mon Mar 29, 2010 10:41 am Post subject: 


hi all,
I think this is the best
Last edited by abdelhamid belaid on Sun May 19, 2013 4:24 pm; edited 2 times in total 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Thu Apr 01, 2010 10:17 pm Post subject: 


hi all
Hunting is not allowed of course
Last edited by abdelhamid belaid on Fri Apr 15, 2011 10:41 am; edited 2 times in total 

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nextstep Site Admin
Joined: 06 Jan 2007 Posts: 539

Posted: Fri Apr 02, 2010 7:37 am Post subject: 


Hi Abdelhamid,
Congratulation Abdelhamid, your work is really stunning
You've already the building blocks for much more complicated mathematical scene and we are eager to see what's next . _________________ Cheers,
Abderrahman 

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