Blender Git Loki

Render section poly for all regions.

Fix section drawing, so only section 1..(n-1) are drawn.

Use correct curvecache verts for drawing the center curve.

Fix stupid mistake, assign instead of add.

Cannot use add_v3_v3 for copying doubles.

Utility functions for curvature, for later use in hair guide curl effect.

Clean up guide interpolation function.

Taper thickness value was applied invertedly, giving zero width at thickness 1.0.

Fix crashes when creating multiple scalp regions.

Better default values for hair guides.

Fix crash when creating guide curves on an empty groom object.

Vertex normal attribute for section polys.

Correct indices for section face drawing by adding the start offset to triangles.

Merge branch 'hair_guides' into hair_guides_grooming

Merge branch 'blender2.8' into hair_guides

Two alternative functions for building guide curves by parametric or arclength distance.

Iterator functions for separating the details of curve eval from the guide discretization.

Guide curve construction function using consistent distance between vertices.

Function for generating guide curve vertices from groom data.

This should eventually allow re-sampling vertices add equal distances,
as well as allowing for additional deformation (e.g. curls).

Fix toolsettings -> tool_settings