Blender Git Loki

Cloth: fix collapse edge, seam issue

The edges on the seam should also be allowed to collapse.

Merge branch 'master' into soc-2019-adaptive-cloth

Cloth: aspect ratio parameter implemented

Now, while collapsing an edge, the aspect ratio is determined by the user, this ensures better quality of the triangles.

Cloth: remove uv_from_face

Cloth: fix try_edge_collapse issue

Cloth: silence print statements

Cloth: fix seam detection which solved collapse edges bugs to large extent

This commit ensures collapse edges works mostly correct. Now to move on to solving issues related to boundary detection, and then flip edges.

Cloth: vertex on seam test during collapse edges

Now it ensures that vertices that are on the seam are not killed while collapse the edge.
Leads to new problem, possibly related to reindex vertices.

Cloth: updating active_faces and fixed bug for collapse edges

Now collapse edges works but incorrectly most of the time.

Cloth: set bmesh vert->co to cloth verts[i].x

This is possible to do now since the cloth is reindexed, important when the length of the edges changes after the initial position of the cloth

Cloth: now reindexing the clothObject->verts to match bmesh

Cloth: collapse edges now deletes vertices from clothObject

This is crucial step, now need to reindex the vertices to properly match the bmesh verts

Cloth: fix collapse edges working on vertex with upto 2 edges

Cloth: collapse edges is now sort of working

Need to find a way to collapse a vertex with more than 2 edges connected to it.
Also need to remove the vertex from the ClothObject that was removed from BMesh

Cloth: added support for edge size with vert

Important for collapse edges, it determines the edge size when the edge is collapsed (does not actually collapse edge)

Cloth: switch active_faces from LinkNodePair to vector<>

Cloth: convert ClothSizing from LinkNodePair to vector<>

Cloth: ported remeshing code to cpp

This has been done to simplify the code (especially with the use of vector<> over BLI_array and BLI_linklist). This will allow for faster iteration of the code as well.

Cloth: Initial steps for flip edges

Basic foundation for the general flow of the flip edges has been set. This is extremely important for both split edges and collapse edges.

Cloth: remove redundant code