Re: Sketch based modeling in Blender-Can it be done?

Yes, look for a logo design tutorial by B@rt or Ton.

Alex

p.s. Here's the text of it:
--
Creating a Logo
Now also available in Italian, thanks to DaWaz!
Well, this time things aren't going to be as exciting as the ride in the 
mines, but I'm sure I can show you all some very usefull Blender 
techniques.
This kind of stuff is actually the kind of work that pays 
computeranimators. While not being very sophisticated, this may be 
important to remember ;-)
Tracing your logo
The most tedious part of creating a logo animation is tracing the logo. 
In most cases all you'll get as a freelancer is a paper print, or a 
bitmap of a companies' logo.
In this case, I just ripped a cool looking logo from the internet.
Fire up Blender and remove the plane from the middle of the screen.
Hit shift-f7, and select the 'Background Pic' button. A 'load' button 
will appear. Select it, and load your logo into Blender. When you're 
done (hit enter to load the image), and you are returned to the 
background screen, hit shift-f5 to show the background picture in your 
viewport.
Next, add a curve (a Bezier curve is fine). While still in edit mode, go 
to the editbuttons screen and select the 'Convert to Poly' button. I 
always find it easier to create a general outline of a logo in straight 
lines first. Later, I'll convert everything back to smooth curves - 
don't worry!
Now, move the vertices to strategic locations on the logo. Keep drawing 
by holding down the control key and left-clicking your mouse. This will 
add new vertices and connect them to the existing curve.
Make closed shaped by hitting the 'c' button. When you need new vertices 
for a new shape, duplicate an existing vertex (shift-D), and move it to 
another position.
Don't worry too much about being very precise yet.
The picture above is the result after tracing only the numbers. For a 
bit of detail, look at the following picture, and pay attention to the 
way I drew the corners. This is important, because later on, I'll 
convert the polygons back into Bezier curves and the corners will be 
perfect this way.
Keep drawing, and don't worry about overlapping lines. Here's the result 
of tracing the entire image:
Yes - chaos. But I'll change that now! Select all vertices and convert 
them back into bezier curves. Now comes the real trick: for vertices 
along smooth parts of the logo (like the circles on the left), select 
the vertex, and hit h-key. This will align the bezier handles and create 
a smooth curve at that point.
This is also the time to pay attention to positioning the vertices more 
precisely. In this case, the logo was scanned at a pretty low 
resolution, you you'll probably need to do a lot of quessing about the 
correct positions.
Here's an example of a part of the '3':
I'm afraid that for the rest, it's just a lot of work, but in the end 
you should have a pretty good looking trace of your original bitmap. 
Also, keep the final purpose of your model in mind. For some 
low-resolution web designs, you probably don't have to worry too much 
about being very accurate!
The fun part
This is, or course, the better part of this tutorial ;-)
I'll just assume that we have what I like to call a 'default' customer. 
That is: a customer who wants a shiny, metallic looking logo. Oh well. 
Let do that!
First, give the object some depth. Leave editmode, go to the editbuttons 
screen, and set the following values:
Ext1: 0.2
Ext2: 0.02
BevResol: 4
Next, because I want to create a nice, smooth looking , I crank up the 
DefResulU value to 25. (Ton will propably disagree on me here, but hey!)
Now I'd like to give the numbers in the logo a different material than 
the rest of the logo. I need to convert the numbers into separate 
objects for this. Enter edit mode, and select a vertex on one of the 
numbers. Hit P. The number is now separated. Repeat these steps for the 
other numbers.
I'll leave the rest up to your own imagination. This is what I did with it:
You can download the complete Blender file here






yajeed2000 wrote:
> Hi,
> I'm a blender newby and have just downloaded version 2.42.
> Is it possible to create a 3d model from a 2d sketch (scanned into
> computer of course) using Blender?
> If it can't be done in Blender is there any other software that can be
> used?
>
> Thanks. 
>
>
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