Head modeling in sPatch
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Tips and tricks

 
sPatch...
 
 
Some examples...
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How to fix this? 
Sometimes edges tend to be welded in this way. Zip file: 2Kb.
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Fingers 
Joining two or more objects. Zip file: 4Kb. 
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 Eye 
How to make holes for eyes or lips. Zip file: 6Kb.
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Head 
How to make head, starting form profile. Be sure to add ears at the end, not before. 
Here, we need to make hole for lips too.
Zip file: 8Kb.
Tips and tricks and other...
Added lines, when we start from profile. There is a larger image of the same model at models page.
Need to add some curves.
Add a points to model, then draw a curve. First weld points in the middle, then points at the ends.
Need to skew something 
Toggle constraint in one axis, then rotate.
Need to align points 
Toggle constraint in one axis, then scale.
How to weld points at the corner of model.
How to weld points at the edge of model.
sPatch models  
in POV-Ray...
 
sPatch internally writing six decimals, but exporting to POV four. This can produce black holes on smaller patches. 
To avoid this, scale objects before exporting, or export as a DXF. Yes, this can produce large files, but rendering can be faster. After all, bicubic_patches are also meshes.
 
Infinitely thin objects, like a bezier patches seem to be lit even if the light source is behind the object. Is this true? 
Yes, but only when we have 'open object', where light pass through the only one bicubic_patch in CSG union. 
Human head models aren't  'open objects'. 
Modeling of  
human heads...
 
Find  images of concrete person, in profile and an-face view. Try to find photos without too much perspective. Draw 
grids to the images, then draw the same grid in one of the back layers. 
Open images in image viewer or print these, then modeling with one eye at sPatch and another at image.
Human head looks very different with or without hair, eyebrows, beard, make-up... (This 
'hair' I was made  with noise tool, then I've combed this with translation of points). 
 
 
Don't modeling yourself, esspecially for the first time. You're simply biassed about yourself.  
This is not from me, this is from Leonardo da Vinci.
From time to time, render your model in POV, with wide camera angle. sPatch currently don't have perspective view. 
There is the same model, rendered with camera angle 60 (left), and camera angle 1 (right).
 
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