lathing a difficult shape for inflate

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lathing a difficult shape for inflate

Postby nonna » Sun Apr 03, 2011 9:36 pm

heres a difficult shape ive been trying to lathe a shape inside to make it into a sculpty. is it possible? not sure how to place a picture here i popped one into the beginners albumn under may name.
nonna
 
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Postby Simon » Sun Apr 03, 2011 9:58 pm

Image

I can see two ways to make this into a sculptie.

The first involves cutting it up into several simpler pieces and using the method I used for this sword to inflate simple lathes inside the pieces.

The second method is to apply the greyscale heightmap as a curvy map to a plane (a square curvy loft object) and save that as a sculptie. Then you can use a texture map with an alpha channel to cut-out the ribbon from the background. This technique gives you a hollow shell instead of a solid sculptie - but can achieve the complex shape in a single sculptie and should look good from the front.
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thank you for your quick response

Postby nonna » Mon Apr 04, 2011 1:03 pm

thank you for your quick response. in order to use this as an ornament for a chair i need it to be a solid sculpty. so i think maybe i will try bringing it into a 3d program as a mesh object from curvy and reduce polygon count and convert it to a sculpty.
nonna
 
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lathing a difficult shape for inflate

Postby nonna » Fri Apr 08, 2011 3:38 am

could you please elaborate on teh second method im having a tough time creating a square lofted object and im not sure how to do the rest iether, thank you nonna
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Postby Simon » Tue Apr 12, 2011 7:01 pm

Here is a flat rectangle file http://www.curvy3d.com/alpha/Rectangle.cvy
I drew it by selecting the Loft tool then drawing a capital I shape - first the vertical, then the two horizontal lines. Then I titied it up by selecting the curves and using Curve Menu/Straight-Line.

The next step is to apply your greyscale input image of the bow to the curvy map of this model - Right click the little grey square where is says Curvy Map in the Object Properties panel and pick your image from the file chooser.

It will work best if the greyscale image of the bow almost fills the image, with a small black border.

You may need to increase the resolution of the model (using the Resolution slider) but bear in mind the Sculptie is limited in how much detail will be preserved.

This model can now be exported as a sculptie. To cut out the bow from the background you will need to make your texture map with an alpha channel - I usually use GIMP and PNGs to make textures with alpha - I can't remember what is best for Second Life.
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