This implements angular bending springs for cloth simulation. This also
adds shearing springs for n-gons.
This angular spring implementation does not include Jacobian matrices,
as the springs can exist between polygons of different vertex counts,
rendering their relationships asymmetrical, and thus impossible to solve
with the current implementation. This means that the bending component
is solved explicitly. However, this is usually not a big problem, as
bending springs contribute less to instability than structural springs.
The the old linear bending model can still be used, and is the default for
existing files, to keep compatibility. However, the new angular bending
model is the default for any new simulation.
This commit makes small breaking changes, in that shearing springs are
now created on n-gons (also in linear bending mode), while n-gons were
previously ignored.
Reviewed By: brecht
Differential Revision: http://developer.blender.org/D3662
This separates cloth stiffness and damping forces into tension,
compression, and shearing components, allowing more control over the
cloth behaviour.
This also adds a bending model selector (although the new bending model
itself is not implemented in this commit). This is because some of the
features implemented here only make sense within the new bending model,
while the old model is kept for compatibility.
This commit makes non-breaking changes, and thus maintains full
compatibility with existing simulations.
Reviewed By: brecht
Differential Revision: http://developer.blender.org/D3655
The preset and decorator icons were updated to be monochrome and draw in the
same color as text. Other icons are unchanged, having them as separate icon IDs
prepares for an artist to make them.
In the workspace properties a mode can now be configured that is
automatically enabled when switching to the workspace.
This is a test to validate how well it works. The weak point is
that if you don't have an appropriate object already select it will
not switch modes.
See T56475.
This commit adds a new armature modifier for grease pencil. The deformations are done reusing the mesh deform routines.
There is also a new operator in weight paint mode to help the artist to generate weights base on armatures. This operator is required because 2D animation workflow is not equal to meshes when parent an object to armatures.
In the drawing engine has been added the option to handle the Fade object parameter used in armatures to see the strokes while move the bones.
When rename bones, all related data of grease pencil is renamed too. This not only affect new armature code, but also layers parented and hook modifiers.
Thanks @aligorith for his review and help.
Now it's possible to add the weight of the current selected vertex group to any new stroke created.
This is very handy when add drawings after the weight paint was done and it will be required with Armatures.
Misleading name since it's between 0..1.
Use as a keyword argument to prepare for keyword only args.
Also document that leaving unset has special behavior.
The operator allows to copy a complete layer with all frames or only active frame to a new object.
Can be found in edit specials menu (W key) or in Layers specials menu (last button near layer list).
After some artist feedback the material selection was not clear.
Now, the material can be selected in the top bar or in the properties panel.
1) If the material is selected in properties panel, all Brushes except pinned will be assigned to this material.
2) If the material is selected in the brush, the properties panel is updated to set the active material.
Added a new Pin icon to keep locked the material to one brush
