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Help Using Inkscape => Inkscape Beginners' Questions => Topic started by: Alexandros81 on April 24, 2018, 05:22:06 AM

Title: Covalent bonds in a silicon crystal - How do I draw this?
Post by: Alexandros81 on April 24, 2018, 05:22:06 AM

How do I draw this picture?

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So far I have done the following:

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thanks

Title: Re: Covalent bonds in a silicon crystal - How do I draw this?
Post by: brynn on April 24, 2018, 06:15:10 AM

It looks like you need to put the black background behind it.  You can do that either by drawing a square or rectangle with the Rectangle tool; or draw it with the Pen/Bezier tool.

With the Pen/Bezier tool:

 -- click once to start the path
 -- move the mouse to the next corner (if you hold the Ctrl key, the mouse movement will be restricted to horizontal or vertical movement)
 -- click once to place a new node
 -- moving on, place a new node at the next corner
 -- finally, place the mouse inside the tiny square which you can see at the beginning of the path, and click once (to close and end the path)
 -- click on the black chip in the palette to fill it with black
 -- Object menu > Lower to Bottom, or switch to Selection tool, and this button  on the control bar  :m2b:

But before you do that, you probably should deal with making the....I guess they are the bonds?....white.

 -- with the Node tool, select 2 opposing paths
 -- drag a selection box around the 2 end nodes, at either the left or right, or top or bottom, of the bond
 -- click "Join selected nodes with a new segment" button on the control bar, looks like this  :jns:
 -- repeat for the other end
 -- click the white chip in the palette, to color it white
 -- Object menu > Lower to bottom (if necessary) or switch to the Selection tool and click this button on the control bar  :m2b:
 -- repeat for all the bonds

Note that there are a few ways to approach this, and others may have better or faster techniques.

Title: Re: Covalent bonds in a silicon crystal - How do I draw this?
Post by: Moini on April 24, 2018, 08:27:29 AM

... and if you have already used ellipses for the bonding lines, then you can now just fill them yellow.

Title: Re: Covalent bonds in a silicon crystal - How do I draw this?
Post by: Moini on April 24, 2018, 08:28:53 AM

- but you haven't - sorry. Didn't see that was the SVG file itself. Make sure to hide all your bonding line endings properly below the atoms.

Title: Re: Covalent bonds in a silicon crystal - How do I draw this?
Post by: brynn on April 24, 2018, 08:52:06 AM

yellow?  Looks white to me!

Title: Re: Covalent bonds in a silicon crystal - How do I draw this?
Post by: Moini on April 24, 2018, 03:34:10 PM

Well, call it cream. It's not plain white, at least :)