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This adds a new brush property called "Deformation Target" which
controls how the brush deformations is going to affect the mesh data. By
default is set to Geometry, which makes the brushes displace the
vertices. When set to Cloth Simulation, the deformation of the brush is
applied to the cloth solver constraints, so the simulation is
responsible to apply the final deformation. This allows to add cloth
simulation effects to other sculpt tools with minor modifications to their
code.
This patch enables Cloth Simulation deformation target for Pose and
Boundary brushes, which are tools that are already designed to work in
low poly counts and produce large deformations. This allows creating the
most common cloth effects, like bending and compressing folds, without
relying on collisions.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8578
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Same concept as the Multires Displacement Eraser Brush but implemented
as a mesh Filter. This allows to delete the displacement of an entire
area uniformly.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8608
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Exact same operation as D8509, implemented as a Mesh Filter.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8510
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This enables the invert mode in the smooth brush as Enhance Details.
The operation is similar to the Sharpen Filter intensify details parameter,
which consist in applying the laplacian smooth displacement in the opposite
direction calculated using the original coordinates.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8509
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Previously, the XYZ deform axis of the Mesh Filter were limited to
object space (which is the default for sculpt mode). Now it is possible
to limit the XYZ displacement in Local, Global or View space.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8582
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This uses the same concept of the Mesh Filter but for applying the cloth
filter forces, so now it can be limited to a specific axis.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8567
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Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8556
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This will be used for new features like supporting cloth deformation in
other brushes and tools outside of the cloth brush code.
No functional changes.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8602
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This adds the boundary_falloff_type and boundary_offset to control how the
falloff of the Boundary Brush is applied.
Boundary Origin Offset is the same concept as the Pose Origin offset in
the Pose Brush. It is a multiplier that adds extra length to the brush
radius to locate the deformation pivot further from the boundary without
affecting the falloff.
The Falloff type includes Constant (previous default), brush radius, loop
and loop and invert. Loop and Loop and Invert can be used to create
deformation patterns in a mesh.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8526
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This brush deletes displacement information of the Multires Modifier,
resetting the mesh to the subdivision limit surface.
This can be use to easily delete parts of the sculpt or to fix
reprojection artifacts after applying a shrinkwrap.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8543
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Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8529
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This brush includes a set of deformation modes designed to deform and
control the shape of the mesh boundaries, which are really hard to do
with regular sculpt brushes (and even in edit mode). This is useful
for creating cloth assets and hard surface base meshes.
The brush detects the mesh boundary closest to the active vertex and
propagates the deformation using the brush falloff into the mesh.
It includes bend, expand, inflate, grab and twist deform modes.
The main use cases of this brush are the Bend and Expand deformation
modes, which depend on a grid topology to create the best results.
In order to do further adjustments and tweaks to the result of these
deformation modes, the brush also includes the Inflate, Grab and
Twist deformation modes, which do not depend that much on the topology.
Grab and Inflate are the same operation that is implemented in the
Grab and Inflate tools, they are also available in the boundary brush
as producing deformations with regular brushes in these areas is very
hard to control.
Even if this brush can produce deformations in triangle meshes and
meshes with a non-regular quad grid, the more regular and clean the
topology is, the better. Most of the assets this brush is intended to
deform are always created from a cylindrical or plane quad grid, so it
should be fine. Also, its algorithms can be improved in future versions
to handle more corner cases and topology patterns.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8356
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This replaces header include guards with `#pragma once`.
A couple of include guards are not removed yet (e.g. `__RNA_TYPES_H__`),
because they are used in other places.
This patch has been generated by P1561 followed by `make format`.
Differential Revision: https://developer.blender.org/D8466
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The paint_draw_cursor function was handling the cursor drawing for 2D
and 3D views of all paint modes, calculating the brush radius, updating
the SculptSession data and updating and drawing all sculpt cursor
overlays for different tools. It was almost impossible to understand when
and what was being drawn and in which state the GPU matrix was.
Now everyting is organized into different functions, with clear
separation between modes, sculpt tool overlays and different drawing
setups. Update and drawing functions are also separated (this allows to
skip one PBVH query on each cursor drawing).
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8206
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This adds a curvature smoothing and intensify details properties to control
the result of the Sharpen Mesh Filter.
Curvature smoothing removes high frequency details from the precalculated
sharpen data, so the filter result has much smoother surfaces and cleaner
sharpen lines;
Intensify details displaces the vertices of creases and valleys in the direction
opposite to its neighbors average, so it intensifies high frequency details
in those areas, producing more noisy and sharp shapes:
Both this properties can be used in combination to achieve a good balance of
high and low frequency details depending on the shape and the desired result.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8447
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The cloth brush builds the constraints when the stroke starts usign the
current state of the mesh. This means that deformations profuced by the
simulattion will accumulate after multiple strokes as it will always
start from the previous deformed state. While this is useful in many
cases, for other uses it is convenient to always simulate the same
initial shape, but applying different forces to it.
The persistent base options work like the persistent base in the layer
brush and allows the cloth brush to not accumulate deformation after
each stroke. When enabled, constraints are created for the shape stored
in the persistent base instead of from the current state of the mesh.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8428
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This allows to use pen pressure modulation in hardness, wet mix, wet
persistence, flow and density, as well as inverting the modulation (more
pressure, less density...). With this, it is possible to create brushes
that mix paint or apply a new color based on the pressure.
Reviewed By: sergey, campbellbarton
Differential Revision: https://developer.blender.org/D8267
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This issue was produced by a hack in the sculpt mode code from 2.80
when the sculpt API for connectivity info was not available.
The smooth brush was the only brush that needed connectivity info,
so there were 3 different smooth functions with the connectivity
queries implemented for dyntopo, meshes and grids. The mesh version
of smoothing was checking the number of connected faces to a vertex
to mask the mesh boundaries, which was not covering all cases and
was hardcoded in the smooth function itself.
This patch removes all those legacy functions and unifies all
smooth functions into a single one using the new API and the
automasking system. In order to achieve this, there were needed
some extra changes:
- The smooth brush now does not automasks the boundaries by default,
so its default preset needs to be updated to enable automasking
- The mesh boundary info is extracted once and cached in a
bitmap, similar to the disconnected elements IDs. This makes
boundary detection work as expected in all cases, solving a lot
of known issues with the smooth brush. In multires, this info is
extracted and cached only at the base mesh level, so it is much
more memory efficient than the previous automasking system.
- In order to keep the brushes responsive as they were before,
the automasking system can now skip creating the cache when it
is not needed for the requested options. This means that for
high poly meshes and simple automasking options the brushes
won't lag on start.
Reviewed By: sergey
Maniphest Tasks: T78747
Differential Revision: https://developer.blender.org/D8260
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This disables all Sculpt Vertex Colors tools, operators, panels and rendering capabilities and puts them under the "Use Sculpt Vertex Colors" experimental option.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D8239
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As tools iterators skip not visible vertices, fully hidden nodes can
also be skipped and considered as masked.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8244
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This tool generates masks based on the sculpt vertex colors by clicking
on the model, similar to automatic selection tools in image editing
software.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8157
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This adds three functions to check the state of the stroke in the
StrokeCache, removing the references to first_time and
mirror_symmetry_pass from the code. This makes easier to understand what
each code path is doing inside of each tool.
Some tools were using mirror_symmetry_pass incorrectly, so this should
also fix unreported bugs with radial and tiling symmetry related to that.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8164
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This implements a fill mode in the Color Filter tool, which fills the
entire mesh with a specific color.
As this functionality is part of the color filter, this allows to control
the blending of the fill color with the filter strength.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D8158
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This option allows posing meshes with different disconnected elements
using the Pose Brush.
This is achieved by doing the following:
- Creating an ID per vertex that stores the connected component of that vertex.
- By using those IDs, one fake topology connection is created per vertex to the nearest vertex in a different ID. The maximum distance to create that connection is determined by the "Max Element Distance" property. These fake connectivity neighbors are used in the Sculpt API functions iterators, so all the algorithms of the Pose Brush can run without modifications as if everything was part of the same mesh.
In order to make this work, the "Connected only" property of the Pose Brush needs to be disabled. This will add an extra performance cost to the Pose Brush and its preview. To achieve optimal results, max element distance should be as low as possible.
Reviewed By: sergey, campbellbarton
Differential Revision: https://developer.blender.org/D7282
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Sculpt Vertex Colors is a painting system that runs inside sculpt mode, reusing all its tools and optimizations. This provides much better performance, easier to maintain code and more advanced features (new brush engine, filters, symmetry options, masks and face sets compatibility...). This is also the initial step for future features like vertex painting in Multires and brushes that can sculpt and paint at the same time.
This commit includes:
- SCULPT_UNDO_COLOR for undo support in sculpt mode
- SCULPT_UPDATE_COLOR and PBVH flags and rendering
- Sculpt Color API functions
- Sculpt capability for sculpt tools (only enabled in the Paint Brush for now)
- Rendering support in workbench (default to Sculpt Vertex Colors except in Vertex Paint)
- Conversion operator between MPropCol (Sculpt Vertex Colors) and MLoopCol (Vertex Paint)
- Remesher reprojection in the Voxel Remehser
- Paint Brush and Smear Brush with color smoothing in alt-smooth mode
- Parameters for the new brush engine (density, opacity, flow, wet paint mixing, tip scale) implemented in Sculpt Vertex Colors
- Color Filter
- Color picker (uses S shortcut, replaces smooth)
- Color selector in the top bar
Reviewed By: brecht
Maniphest Tasks: T72866
Differential Revision: https://developer.blender.org/D5975
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This operator performs an edit operation in the active face set defined
by the cursor position and updates the visibility. For now, it has a
Grow and Shrink operations, similar to Select More/Less in edit mode or
to the mask filter Grow/Shrink modes. More operations can be added in
the future.
In multires, this updates the visibility of an entire face from the base
mesh at once, which makes it very convenient to edit the visible area
without manipulating the face set directly.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D7367
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Instead of accumulating displacement for each vertex into the neighbors, accumulate the opposite displacement from each neighbor into the vertex. I think this is the same and it does not produce artifacts in Multires.
Reviewed By: sergey, brecht
Differential Revision: https://developer.blender.org/D7508
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This tool is similar to the cloth brush, but it applies the cloth
simulation deformation to the whole mesh in an uniform way. The
simulation can be controlled using the mask to pin vertices and the face
sets to define force action areas.
It uses the same solver as the cloth brush which now no longer depends
on StrokeCache.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D7857
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This was propsed in D7059, so I applied it to the rest of the code
Reviewed By: campbellbarton, sergey
Differential Revision: https://developer.blender.org/D7480
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The grab mode was not correctly implemented, so the way it was working
was confusing for users.
- Grab delta was calculated in increments from the last stroke position, so it did not match the behavior of a grab brush. I refactored the grab delta calculation to make this change more explicit.
- Grab displacement was not calculated from the original coordinates
- Grab was using an incorrect strength
Grab is now setting the position of the affected vertices directly and
the constraints solve the rest of the cloth. I also tried to implement
an alternative version based on applying forces to move the vertices to
the grab position, but I think this is more controllable and the grab
falloff can be adjusted by tweaking the simulation falloff.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D7756
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The only possible name for the iterator was ni, this should fix that.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D7774
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This implements the restore function for Draw Face Sets and Layer, which
don't affect coordinates or masks directly. This is needed for the
anchored and dot brush strokes.
Layer frees the current displacement and a new one is created on each
stroke sample. Draw Face Sets copies the data back from the first undo
node to the mesh datalayer.
Also fixes T75727
Reviewed By: jbakker
Maniphest Tasks: T75727
Differential Revision: https://developer.blender.org/D7442
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The Layer brush was in Blender before 2.81, when the sculpt API was
introduced. It had a huge amount of bugs and glitches which made it
almost unusable for anything but the most trivial cases. Also, it needed
some hacks in the code just to support the persistent base.
The brush was completely rewritten using the Sculpt API. It fulfills the
same use case as the old one, but it has:
- All previous artifacts fixed
- Simpler code
- Persistent base now works with multires thanks to the sculpt API
- Small cursor widget to preview the layer height
- More controllable and smoother strength and deformation
- More correct masking support
- More predictable invert support. When using persistent base, the brush invert mode resets to layer height 0, instead of jumping from +1 to -1. The brush can still be inverted in the brush direction property.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D7147
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This mesh filter sharpens and smooths the mesh based on its curvature,
resulting in pinching hard edges and polishing flat surfaces. It fixes
most of the artifacts of the voxel remesher and those produced when
sculpting hard surfaces and stylized models with creasing and flattening
brushes.
It needs and accumulate_displacement step before each filter iteration which
can't be multithreaded in an easy way (it would need something to sync the
threads when modifying the data of neighbors in a different node), but this
does not affect performance in a significant way.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D7335
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The idea is to push both base mesh geometry and PBVH coordinates
so it is possible to undo everything without loosing data which was
not flushed from sculpt session to base mesh.
It is possible do memory optimization to avoid push custom data
layers which are not touched by operator, but before doing that
better to ensure this is a correct and working approach.
Differential Revision: https://developer.blender.org/D7381
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Differential Revision: https://developer.blender.org/D7018
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Made it so there is a single UNDO node in the list which has
both original and modified mesh state.
Makes it easier to achieve "interleaved" undo nodes stored in
the undo step (as opposite of either storing geometry or other
data).
Should be no functional changes, just preparing for an upcoming
work to support undo of operation like Apply Base.
Differential Revision: https://developer.blender.org/D7290
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This commit introduces a new mode for calculating the positions and
weights of the IK segments in the Pose Brush based on the Face Sets.
The first segment of the chain will always include all face sets inside
the brush radius and it will propagate until the boundary of the last
face sets added in the flood fill. Then consecutive connected face sets
are added to the chain until the chain length limit is reached or all
face sets of the mesh are already part of the chain.
This feature enables complete control over the pose brush origins in
case that is needed. Also, with this mode, the user can have a library
of base meshes with face sets already configured to get to the initial
pose as fast as possible.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D7235
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