[Scilab-users] Compute normals to 3D surface

[Rafael Guerra]

Hi Lester,


Try xarrows().

At the end of your code, add:

// Compute normals to surface
[x1,y1,z1]=surfnorm(x,y,z);
sf = 0.2;  // arrows scale factor
x1 = sf*x1 + x;
y1 = sf*y1 + y;
z1 = sf*z1 + z;
// Plot normal vectors to surface
xarrows([x(:)';x1(:)'],[y(:)';y1(:)'],[z(:)';z1(:)'],-1,2)

Regards,
Rafael

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