How to draw a 1/2 sphere

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How to draw a 1/2 sphere

Postby dammerel » Fri Nov 30, 2007 1:49 pm

Hi all what is the best way to draw a 1/2 sphere like a security camera housing len
thanks Andrew
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Re: How to draw a 1/2 sphere

Postby Gaieus » Fri Nov 30, 2007 1:50 pm

Andrew,

1) draw a horizontal circle
2) draw a vertical arc on top of it (starting and ending on opposite endpoints of the circle) and a line between the two endpoints to close the face
3) select the circles edges all around
4) select the Follof me tool and hit the face of your half circle.
5) you may wish to delete the initial cirlce and
6) depending on you getting a blue or white face of you semi-dome/hemisphere, you may wish to reverse it (right click, reverse face)
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Re: How to draw a 1/2 sphere

Postby dammerel » Fri Nov 30, 2007 1:50 pm

Thanks again..if i want to remove the base a the dome do you simply erase the base edge
Andrew
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Re: How to draw a 1/2 sphere

Postby Gaieus » Fri Nov 30, 2007 1:51 pm

Not the base edge (for that is shared with the dome itself) but jzust the face. Click on it (once) and either hit the Del(ete) button or right click and choose "Erase".
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Re: How to draw a 1/2 sphere

Postby SchreiberBike » Fri Nov 30, 2007 1:51 pm

Another way is to open the Components Menu / Shapes and select a 1/2 sphere. Too easy perhaps, but still an option.
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Re: How to draw a 1/2 sphere

Postby dammerel » Fri Nov 30, 2007 1:51 pm

can it be re-sized to suit ?
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Re: How to draw a 1/2 sphere

Postby Gaieus » Fri Nov 30, 2007 1:52 pm

Everything can be resized.
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Re: How to draw a 1/2 sphere

Postby dammerel » Fri Nov 30, 2007 1:52 pm

how ? drag the edges ?

Andrew
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Re: How to draw a 1/2 sphere

Postby Gaieus » Fri Nov 30, 2007 1:52 pm

There is the scale tool. Select everything then the scale tool and start pulling one of the green "buttons".
While doing so, Shift key will toggle between uniform/non-uniform scale, Ctrl key will toggle between scaling about opposite point / centre.
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Re: How to draw a 1/2 sphere

Postby dammerel » Fri Nov 30, 2007 1:53 pm

thanks again
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dammerel 
 

Re: How to draw a 1/2 sphere

Postby not registered yet » Fri Nov 30, 2007 1:53 pm

I'm a few days into sketchup so bear with me :),

How do you create 2/3 spheres? I'm trying to put a doorway into a thick walled ball and don't know how to erase/divide up a sphere.

Also, in the welcoming message here there's a link for a semisphere tutorial that is 404'ed.

P: motofish
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Re: How to draw a 1/2 sphere

Postby Guite » Fri Nov 30, 2007 1:55 pm

2/3rd sphere:

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Re: How to draw a 1/2 sphere

Postby Gaieus » Fri Nov 30, 2007 1:56 pm

motofish wrote:...Also, in the welcoming message here there's a link for a semisphere tutorial that is 404'ed.

Well, Guite's examples may serve your needs. I do understand them so if there's any problem with them just tell us, please.

About the 404 error ("not found") - we had some problems with loosing some content so sorry for that. We'll try to replace it.
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Re: How to draw a 1/2 sphere

Postby not registered yet » Fri Nov 30, 2007 1:57 pm

thanks. the intersect tool was what I needed to lop of the bottom of a sphere. Now to create a crust on the ball...

P: motofish
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Re: How to draw a 1/2 sphere

Postby SchreiberBike » Fri Nov 30, 2007 1:58 pm

I don't know of a "crust" ruby. ;) But you've sure got me curious.
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