surface command problem.

alirezagholamian shared this problem 3 months ago
Not a Problem

hi:

I use surface command (surface(object,angle,axis) ) in this file but shape is not true.

please check it.

thanks

Comments (8)

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What do you think it should look like?

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it should be torus

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like as rotate polygon around zaxis.

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Hi

it doesn't work with parametric curve

https://wiki.geogebra.org/e...

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hi

I can create this shape with parametric curve or surface but surface command with surface(object,angle,axis) have problem.

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Your a and b must be curve and not parametric curve

https://wiki.geogebra.org/e...


a= Courbe(sin(v), cos(v) + r, 0, v, 0, 2π) is a parametric curve

a=Courbe(sin(v), cos(v) + r, v, 0, 2π) is a curve

b6371e0a8907d2cbf744461342af748e

36152f69d4d0e73495d944b2a93461b8


https://www.geogebra.org/m/W4KykTeW

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GG usa v y u como variables propias para generar la superficie de rotación así que no debe usarse ni u ni v para la definición de la curva


define la curva usando como variable la letra t

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thanks @mathmagic

with your help, i change my file and draw torus.

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