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Old 21-06-2008, 04:55 AM   #1
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Unhappy probleme avec "LOFT"


j'utilise ce code MEL:

global vector $OM,$T,$B,$N,$P;

proc CreerVecteur(float $a,float $b,float $r,float $t,float $s,int $j)
global vector $OM,$T,$B,$N,$P;
float $c = sqrt($a * $a + $b * $b);

$OM = << $a * cos( $t ), $b * $t, $a * sin( $t )>>;
$T = << -$a/$c*sin($t) , $b/$c , $a/$c * cos($t) >>;
$N = << -cos( $t ), 0, - sin( $t )>>;
$B = ( -1 / $c) * << $b * sin( $t ), $a, -$b * cos($t)>>;
$P = $OM + $r * (cos($s + 10 * $j ) * $N + sin($s + 10 * $j ) * $B );

proc CreerCercle(int $t,float $pas, float $rayonCentral)
global vector $OM,$T,$B,$N,$P;
circle -nr ($T.x) ($T.y) ($T.z) -r 0.2;
move -r ($P.x) ($P.y) ($P.z);

proc dessine(string $nom, int $ray_central )
float $i;
int $nbre_solenoide;
int $nmax = 5;
float $nbre_tours = 2;
float $nbre_pts_tour = 50;
float $PI = 3.141519;

for ($i=0 ; $i < $nbre_tours*360 ; $i+=360.0/$nbre_pts_tour)
float $angle_central = $i * 2 * $PI / 360;
float $angle_solenoide = $i * 2 * $PI / 360;
float $pas=1.5;
float $rayon= 1.5;
CreerVecteur($ray_central,$pas,$rayon,$angle_centr al,$angle_solenoide,$nbre_solenoide);


proc dessiner()
dessine("SDRD",15) ;


ce code me donne une spirale, et quand je sélectionne tous les cercles,et j'applique LOFT, dans précisément 2 endroits à chaque tour, j'obtient une spirale applatie (rayon nul)! pour remedier a ça j'ai essayé de séléctionner quelques cercles et de leur faire subir un inversement de sens, mais ca marche toujours pas.
svp quelqu'un pour aider?

Last edited by darkcyber : 21-06-2008 at 05:11 AM.
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Old 21-06-2008, 05:20 AM   #2
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ENGLISH!!!!!!!!!Sil vous plait LOL
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Old 21-06-2008, 12:04 PM   #3
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this code gives me a spiral, and when I select all the circles, and j' applies LOFT, in precisely 2 places with each turn, j' a spiral applatie obtains (null ray)! to cure that j' has; tried to select some circles and to make them undergo conversely direction, but Ca still does not go. please quelqu' to help? thank you

please note some couldn't be translated by opera...

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Old 21-06-2008, 06:38 PM   #4
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Really sorry for having wrote that in French, and thanks a lot for you acid44

here is what i wanted to say:
the code gives me circles which are disposed in a specific way, when i select all of the them and apply LOFT, it gives me a spiral. until nnow everything is OK but the problem is that in this spiral, and exactly in 2 places of each turn, the spiral gets a null ray..
i didn't knew what was the problem so i tried to select some of the circles (which i thought to be causing the problem) and applied "reverse curve direction", but the problem is still there!

i don't really know how to do about
so if someone is able to help,i'll be very thankful
[excuse my english please] :blush:
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