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Bsurfaces and Line conversion in Blender 2.6.9

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Zachary1234:
There are 3 tasks that my exercises and viewing of tutorial videos havn't helped much on.  Could someone
just reply with practical answers, if possible?

-What do I actually do to get bsurfaces generating between two Grease Pencil lines?
I can put down a plane and get the bsurfaces menu to show in the <t> area, but it hangs whenever I get it to go and or does nothing. How do I get it to run and give me the resultant grid, with the new options thereafter?

-What is the keyboard shortcut for subdivisions on a path? How may I select all subdivisions on a path?

-How do I turn a straight, individual path into a bezier, as well as in place too? How may I turn an individual straight path, composite paths, and beziers into a grease pencil line, in reverse (would need to for bsurfaces and other options)? Otherwise what would you do with aid in drawing nicer grease pencil lines?

kat:
If you want to do something to a collection of objects whilst a Grease Pencil line is in the scene you'll first need to properly convert it into something Blender can deal with - I don't use GP so can't say for sure but read the docs for that feature here "Converting Sketches to Objects"? You may need to do some fiddling depending on the complexity of your 'sketch'.

The ToolShelf is context-sensitive so if Blender isn't hanging completely then it likely means the feature you're trying to access is not currently available based on what you're trying to do. Are you wanting to sub-divide the plane after it's been converted to a B-Mesh?

Read through the doc to learn how to change the character (type) of Bezier points

Zachary1234:
Converting Grease Pencil to a mesh or bezier curve is never a problem; I can click on <convert> in the <n> area for Grease Pencils after drawing, and I can Click the "disable joining" little text box. I can even use <<alt> + <c>>  to shuffle between curves and meshes.

- My problem is converting a path into a bezier, and a bezier back to a Grease Pencil again, since I need the handle assistance under edit mode <tab> for those to get my shapes just right, and free handing with Grease Pencil isn't accurate enough for curves to start.

- From there, my second problem is turning at least 2 Grease Pencil Lines into the opposite edges of a corelative surface, using BSurfaces. What state do 2 opposite beziers need to be in? Do you have to start from grease pencil only? How do I get Bsurfaces to show me the <add surface> button, to draw it's extrapolation for me?  I've found the buttons, keys and mouse click too confusing here.

[EDIT] cleaned up text alignment. kat.

kat:
I could be incorrect on this as I don't use BSurfaces, but so far as I'm aware it's not possible to convert paths or Beziers back into Grease Pencil lines because the latter isn't an editable object until it's converted into something, especially so if you've done something to the Bezier after conversion (destructive editing) because you would have then changed the form of the original line from which the Bezier Curve was generated. Don't quote me on that though.

Again don't quote me on this as I don't use Beziers that much either, but you can't 'mesh' with Beziers themselves because they're 'lines' (points along a path), they either have to be converted into an 'editable object', or they can be edited based on tool selection, switching into 'Mesh' edit mode for example when in BSurfaces, from whence the normal mesh editing tools are available for you to 'fill' or 'bridge' gaps as it appears you need to do.

There's a surprising amount of information available online about how Grease Pencil can be used, it may just mean you wrangling it to do what you're trying to do.

- Review of BSurfaces
- Drawing with Grease Pencil I
- Drawing with grease Pencil II

Zachary1234:
- Don't worry about my bsurfaces question, since I have got layers and bsurfaces all working as desired. My problem now pertains to lines. To help with my modelling, and to provide me with all desired options, I need 2 things now:

- If I have a path which is a series of straight line, in <tab> edit mode, how may I select a desired cross segment of multiple sub paths, all all paths at once?

- How may I convert an already drawn straight line path into a bezier curve, with its dual end handles to help with curvature?  Mainly, how do I convert an individual or multiple "path path", or a bezier curve, or a combination of the two latter curves, into a Grease Pencil curve? I would need to go from paths or beziers to bsurfaces, since I need the special handle assistance to give me better precision for curves that Grease Pencil gives me when drawing with it.

Can someone tell me what to do with these, please?

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