- Mark Border Seam: mark edges on the border of face selection as seam.
- Clear Seam: clears seams in selected faces.
Hotkey: Ctrl+E
- Alt+RMB Click: mark/clear edge as seam
- Alt+Shift+RMB Click: mark/clear seams along the shortest/straightest path
from last marked seam. The cost of the path also includes some measure of
'straightness' next to the typical distance to make things work more
predicatble and edgeloop friendly. Note that this cuts a path from edge to
edge, not vertex to vertex. That gives some nice control over the direction
of the seam.
Also includes:
- Removed old LSCM code.
- Fix updates glitches with DerivedMesh/Subsurf drawing in FaceSelect mode.
Now there's a drawMappedFacesTex instead of drawFacesTex.
- Minimize Stretch menu entry called Limit Stitch.
- Removed the lasttface global, was being set before it was used anyway, so
might as wel return from a function.
- Moved some backbuf sampling code to drawview.c from editmesh, so it can be
used by Faceselect and VPaint.
- Use BLI_heap in parametrizer.c.
- Set local sticky in the uv editor as default.
- Don't do live unwrap on fully selected charts or charts with no pins
selected.
- Fixed bug with live unwrap not respecting transform cancel in some cases.
- "View Home" didn't work without an image.
- Move UV Calculation settings (cube size, cylinder radius, ..) into the scene
toolsettings, instead of global variables
- Remove the name LSCM from the UI (and python docs on seams), and replace it
with 'Unwrap', with upcoming ABF this didn't make sense anymore.
- Move the Old/New LSCM switch into the UV Calculation panel. New LSCM is the
default now. Also renamed LSCM there to "Conformal".
- Made some room in the UV Calculation panel by removing the buttons to execute
the UV calculation, only leaving the settings.
Fill Holes:
- LSCM now has an option to fill holes in the chart before unwrapping. This on
by default, and enables two things:
- Prevent internal overlaps (e.g. eyes, mouth) for LSCM unwrapping.
- Allow the internal boundaries to move freely during stretch minimize.
- The possibility to switch it off is there because it is not always possible
to define which the outer boundary is. For example with an open cylinder
where there are two identical holes.
- There is now a (temporary) dropdown box in the image window header for
switching between the old an new unwrapper code. So to test the changes
described below you need to enable the new unwrapper code.
- Pinning is now more predictable, if one uv is pinned, the others belonging
to the same vertex are pinned also.
- Live LSCM is much faster, since the LU factorization, the most expensive
part of the computation, is now stored and reused (was Jens' idea).
- Packing multiple uv charts is slightly improved, by doing a binary search
over the texture width. This fixes the case where all the charts are
packed at the bottom of the image.
- LSCM now uses an angle based formulation, and the results seem somewhat
different (maybe slightly better?), didn't find out why yet.
This commit adds new underlying uv unwrapper code, intended to be
more extensible. At the moment this has a re-implementation of LSCM.
This has not been activated yet, since it doesn't add anything new.
What's new is the stretch minimize tool from tuhopuu. It works by
selecting some some uv's in the uv editor window, and then pressing
ctrl+V. The uv's on the boundary stay fixed.
More stuff will follow as I port it over & fix it.
This is a combined effort from Jens, Ton who finished the code here on my machine, and myself putting in the little menu toggle and committing :).
Turn it on and off in the UV/Image window menu UVs -> LSCM Live Transform. It recalculates the LSCM within the transform loop when you're transforming pinned vertices, so it gives realtime feedback - a real time saver! Note: this is much more powerful than proportional edit, since it's properly calculating LSCM using the correct edge angles, etc.
I recorded a quicky demo video here: http://orange.blender.org/wp-content/themes/orange/images/media/lscm_live.mov (quicktime animation codec)
- Moved Weld/Align out of transform code, now it's a menu.
- Removed confirmation popups for LSCM unwrapping in the uv editor, didn't
make sense anymore now we have undo.
- Extended select linked, to work more like it does in edit mode:
- L: select linked uvs/faces under the mouse
- Shift+L: select/deselect linked uvs/faces under the mouse
(like shift+click for selecting single uvs/faces)
- Ctrl+L: how L worked before
- More accurate uv selection: when selecting one uv from a group of uvs that
are in the same position, it now selects the uv belonging to the face the
mouse is over, instead of a random uv.
- 'View Selected' (numpad .-key) for both faceselect mode and the uv editor.
The algorithm used before to split up the mesh before unwrapping was based on
vertices, resulting in leakage in some setups. Now it's edge based, allowing to
select only two edges of a triangle, and not automatically selecting the third.
http://www.loria.fr/~levy/Galleries/LSCM/index.htmlhttp://www.loria.fr/~levy/Papers/2002/s2002_lscm.pdf
Implementation Least Squares Conformal Maps parameterization, based on
chapter 2 of:
Bruno Levy, Sylvain Petitjean, Nicolas Ray, Jerome Maillot. Least Squares
Conformal Maps for Automatic Texture Atlas Generation. In Siggraph 2002,
July 2002.
Seams: Stored as a flag (ME_SEAM) in the new MEdge struct, these seams define
where a mesh will be cut when executing LSCM unwrapping. Seams can be marked
and cleared in Edit Mode. Ctrl+EKEY will pop up a menu allowing to Clear or Mark
the selected edges as seams.
Select Linked in Face Select Mode now only selects linked faces if no seams
separate them. So if seams are defined, this will now select the 'face group'
defined by the seams. Hotkey is still LKEY.
LSCM Unwrap: unwrap UV's by calculating a conformal mapping (preserving local
angles). Based on seams, the selected faces will be 'cut'. If multiple
'face groups' are selected, they will be unwrapped separately and packed in
the image rectangle in the UV Editor. Packing uses a simple and fast
algorithm, only designed to avoid having overlapping faces.
LSCM can be found in the Unwrap menu (UKEY), and the UV Calculation panel.
Pinning: UV's can be pinned in the UV Editor. When LSCM Unwrap is then
executed, these UV's will stay in place, allowing to tweak the solution.
PKEY and ALT+PKEY will respectively pin and unpin selected UV's.
Face Select Mode Drawing Changes:
- Draw Seams option to enable disable drawing of seams
- Draw Faces option to enable drawing of selected faces in transparent purple
- Draw Hidden Edges option to enable drawing of edges of hidden faces
- Draw Edges option to enable drawing of edges of visible faces
The colors for these seams, faces and edges are themeable.
