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nextstep Site Admin
Joined: 06 Jan 2007 Posts: 538

Posted: Tue Jan 01, 2013 1:28 am Post subject: Happy new year 2013 


Hi all,
Happy new year 2013 to all of you. K3DSurf is now working under Qt4 but some features are still missing...so patience
First screenshot of the MathMod project:
_________________ Cheers,
Abderrahman 

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

Posted: Sun Jan 06, 2013 12:16 pm Post subject: 


Hi Taha
Oh that's a suprise that you continue working on K3DSurf.
If there is a beta version for testing, please let me know it.
Hopefully you do NOT rename K3dSurf to MathMod. This name is still used for other projects and I like K3dSurf as an unambiguous name.
wish all of you also a successful year 2013
ps. May I propose some changes for the next release?
 can you add an undofunction when pressing the Clear button.
 there should be much more space for displaying the dropdown list for the example name selection, because it is also used to select loaded example names.
 Automatic loading of ALL configuration values and a default button for reseting all values. 

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

Posted: Wed Jan 09, 2013 1:16 pm Post subject: 


Hi all,
Happy new year 2013
interesting Taha. I'm looking forward to the new version of the software.
ciao
torolf _________________ Kontakte 

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abdelhamid belaid
Joined: 13 Aug 2009 Posts: 170

Posted: Wed Jan 16, 2013 9:55 am Post subject: 


Happy new year 2013
great Taha. _________________ My YouTube channel
Last edited by abdelhamid belaid on Mon Mar 18, 2013 6:19 am; edited 1 time in total 

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Furan
Joined: 05 Oct 2010 Posts: 64 Location: Prague, Czech Republic

Posted: Fri Feb 15, 2013 7:13 pm Post subject: New Year's Object 


There is no recent topic on parametric surfaces, so for a good start you can try the Trifold Knot. I suggest you try different crossection, inner twist etc. by adjusting functions xp, yp, zp.
Parametric curve:
Code:  x=2*sin(t)+4*sin(2*t)
y=2*cos(t)4*cos(2*t)
z=2*sin(3*t)
t=0..2*pi

Parametric surface:
Tangent vector u; orthogonal vectors v= u x [0 0 1]; w= u x v
Two parameters: u (rotation along main axis), v (rotation along the knot curve)
Code:  u1(u)=2*cos(u)+8*cos(2*u)
u2(u)=2*sin(u)+8*sin(2*u)
u3(u)=6*cos(3*u)
v1(u)=u2(u)
v2(u)=u1(u)
v3(u)=0
w1(u)=12*cos(3*u)*(cos(u)+4*cos(2*u))
w2(u)=12*cos(3*u)*(sin(u)4*sin(2*u))
w3(u)=6832*cos(3*u)
normv(u)=sqrt(32*cos(3*u)+68)
normw(u)=sqrt(8)*sqrt(795+36*cos(9*u)+217*cos(6*u)+652*cos(3*u))
xp(u,v)=v1(u)*cos(v)/normv(u)+w1(u)*sin(v)/normw(u)
yp(u,v)=v2(u)*cos(v)/normv(u)+w2(u)*sin(v)/normw(u)
zp(u,v)=w3(u)*sin(v)/normw(u)
x=2*sin(u)+4*sin(2*u)+xp(u,v)
y=2*cos(u)4*cos(2*u)+yp(u,v)
z=2*sin(3*u)+zp(u,v)
u=0..2*pi
v=0..2*pi
 [/code] 

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

Posted: Tue Jun 04, 2013 12:40 pm Post subject: 


Dear Taha, there is something new from your MathMod project
cu
Torolf _________________ Kontakte 

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