Human Circulatory System Model

ZooHead

Well-known member
I still need to add the vessels and nerves but
I wanted to see how a Boolean cutaway would look.

Leg Cutout.jpg
 

ZooHead

Well-known member
While making the veins I found some interesting behavior
with compound paths and the sweep rotation property.

I didn't want perfectly circular tubes, but something more realistic
like a flattened ovoid shape with some rotation along the length.

I started with a compound spline and animated the Sweep rotation property.
The center spline section rotates differently from the outer spline and the end-caps come unglued.

Then I used a Shell modifier to get it to work.

sweep_rot.gif


This one has the ovoid shape and Subdivision Modifier to get a rounded look at the cut ends.

sweep_rot02.gif
 

frank beckmann

Well-known member
While the compound path Sweep seems a bug to me not updating cover correctly while rotating the shelled sweep works just so lala when the spline has iterations:
SweepRotation.gif

Cheers
Frank
 

ZooHead

Well-known member
Very interesting. Did you notice what the other end of the inner spline does?
It seems to oscillate in opposition.

I wonder if that changes if I move to center point of the line spline?
 

frank beckmann

Well-known member
In terms of modelling this seems a "serious" bug:
SweepRotaionIssue.png

I know I can make a mesh and use the Twist-modifier but I prefer not to do so.

Cheers
Frank
 

ZooHead

Well-known member
Here's the collection of splines for the leg so far.
I finished the veins, now I just need to add a few arteries and nerves.

So all parts are created with these splines individually or in combination
using sweeps, extrusions and for the cutout, Boolean subtraction.

Leg Splines.jpg
 

frank beckmann

Well-known member
I know. ;) But:
SweepCreatorCoverIssue.gif

And I still have a slightly issue in terms of consistency when putting a text spline and a spline object Z-axis oriented in a sweep-creator it will appear reversed. I know I can rotate the spline 180° but how to explain to a newbie why it is when the extrude-creator makes it readable by default. :unsure:

Cheers
Frank
 
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ZooHead

Well-known member
Two examples of what needs to be improved.

The backwards thing is annoying because it just seems wrong.
I can't figure out a good reason for it to be that way.
 

ZooHead

Well-known member
I noticed in the gif you posted, if you move the text
spline below the line spline it clears that problem up.
 
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