This is a regression introduced in rBce729677db3e and rBb408d8af31c9.
RoundCapShader and SquareCapsShader had to remove (almost) overlapping
stroke vertices to avoid sudden thinning of line thickness. For instance,
the test .blend file from https://developer.blender.org/T36425#231460
suffered from the reported line thinning (although T36425 was originally
caused by a different bug).
This patch introduces a couple new stroke modifiers. The ones currently implemented are based on prototypes by @kjym3 and myself.
The new modifiers:
- Tangent
- Thickness noise
- Crease Angle
- Simplification
- Curvature 3D
The documentation for these new modifier types can be found [[ http://www.blender.org/manual/render/freestyle/parameter_editor/index.html | in the manual ]]:
{F134441}
(left: AnisotropicThicknessShader, right: NoiseThicknessShader)
{F140499}
(left: Curvature 3D, right: Simplification)
Author: Folkert de Vries (flokkievids)
Reviewers: kjym3
Subscribers: #user_interface, plasmasolutions, kjym3
Projects: #bf_blender
Differential Revision: https://developer.blender.org/D963
This patch adds some new functionality to the Freestyle Python API, notably:
- MaterialBP1D, checks whether the supplied arguments have the same material
- Fixes a potential crash in CurvePoint.fedge (due to NULL pointer)
- Makes (error handling in) boolean predicates more robust
- Adds a BoundingBox type, to make working with bounding boxes easier
- Adds several new functions (get_object_name, get_strokes, is_poly_clockwise, material_from_fedge)
- Adds a StrokeCollector StrokeShader, that collects all the strokes from a specific call to Operators.create()
- Adds hashing and rich comparison to the FrsMaterial type
These new features (most of them, anyway) are needed for making a more robust SVG exporter that supports holes in fills.
Reviewers: kjym3, campbellbarton
Subscribers: campbellbarton
Projects: #bf_blender
Differential Revision: https://developer.blender.org/D1245
Features:
* Both still image and animation rendering, as well as polygon
fills are supported.
* The exporter creates a new SVG layer for every Freestyle line
set. The different layers are correctly sorted.
* SVG paths use data from line styles, so the base color of a
line style becomes the color of paths, idem for dashes and
stroke thickness.
* Strokes can be split at invisible parts. This functionality is
useful when exporting for instance dashed lines or line styles
with a Blue Print shader
* The exporter can be used not only in the Parameter Editor mode,
but also from within style modules written for the Python
Scripting mode.
Acknowledgements:
The author would like to thank Francesco Fantoni and Jarno
Leppänen for their [[ https://github.com/hvfrancesco/freestylesvg | Freestyle SVG exporter ]].
Differential revision: https://developer.blender.org/D785
Author: flokkievids (Folkert de Vries)
Reviewed by: kjym3 (Tamito Kajiyama)
The reported issue was caused by a backward incompatibility due to careless
code changes made when per-material Freestyle line colors were introduced
in rB7915d7277ac8c605f016f30f943080556244fb59. In 2.71 line style
Material color/alpha/thickness modifiers was retrieving alpha transparency
from Material.alpha, whereas in 2.72 Material.line_color[3] was referenced.
The present fix reverts the aforementioned code changes.
This issue is a regression from 2.71, so the fix is appropriate for inclusion in
the 2.72a release.
This patch removes several stroke shaders written in C++ that are unused
and don't serve a real purpose any more. The removed shaders are:
- BPy_ColorVariationPatternShader
- BPy_StrokeTextureShader
- BPy_TextureAssignerShader
- BPy_ThicknessVariationPatternShader
- BPy_fstreamShader
- BPy_streamShader
and a few more that weren't even exposed to the Python API.
Some minor edits were made by the reviewer.
Differential Revision: https://developer.blender.org/D801
Reviewed by: kjym3
The following two sort keys are added for sorting chains.
* Projected X - Sort by the projected X value in the image coordinate system.
* Projected Y - Sort by the projected Y value in the image coordinate system.
A new line style option for the selection of first N chains is also added.
Moreover, the chain sorting and chain selection operations are now executed
in this order instead of the reverse order used previously. The UI has also
changed accordingly. This functional change is backward compatible and
won't result in visual differences.
Fixed dead references of API identifiers (e.g., freestyle.types.Interface0D)
due to relocations of the identifiers into submodules. Also made various minor
revisions of mark-ups and typos.
Freestyle sections of the API docs were empty due to Freestyle module reorganization
in commit rB6498b96ce7081db039354228213d72e8c70bd3aa.
Module __all__ property was added to submodules so as to properly exclude irrelevant
documentation elements such as mathutils.Vector.
In addition to D319, this patch updates the parameter editor, the UI of Freestyle.
Using new API functionality and experience gained in making D319, this patch
provides a quite noticable speedup for commonly-used Freestyle linestyle modifiers.
As this patch touches a lot of code (and mainly the foundations) it is likely that
mistakes are made. The patch has been tested with a regression suite for Freestyle
(https://github.com/folkertdev/freestyle-regression-tests/tree/master), but testing
with scenes used in production is very much appreciated.
Differential revision: https://developer.blender.org/D623
Author: flokkievids (Folkert de Vries)
Reviewed by: kjym3 (Tamito Kajiyama)
New properties 'line_color' and 'line_priority' are added to Material ID data blocks.
The 'line_color' property allows users to specify a per-material line color that can be
used as a Freestyle line color through Material color modifiers of line style settings.
The new line color property is intended to provide a solution for line color
stylization when a proper Freestyle support for Cycles is implemented (likely
as part of the upcoming Blender 2.72 release; see Patch D632). Materials in
Cycles are usually set up using shader nodes, and Freestyle won't be capable
of retrieving colors and other properties from node-based materials any soon.
The new line color property of materials addresses this foreseen limitation by
providing artists with an intuitive alternative mean to specify line colors on a
per-material basis independently from node trees.
The 'line_priority' property gives users a way to control line colors at material
boundaries. When a line is drawn along a feature edge at material boundaries,
one of the two materials on both sides of the edge has to be picked up to
determine the line color. So far there was no way to control this selection
(which was in effect at random). Now the material with a higher line color
priority will be selected.
The new per-material line settings are shown in the new Freestyle Line tab in
the Material context of the Properties window (only when Freestyle is enabled).
This revision is meant to update Freestyle's Python scripts to make full usage
of the new features of Python and Freestyle's Python API.
Freestyle's Python scripts are pretty old already, and were never given much
attention. With the 2.7x generation of Blender coming up, this is an excellent
time to update Freestyle's Python scripts, hopefully adding some new features
and achieving some speed improvements on the way.
Main goals:
* use for loops where possible
* general cleanup, making use of more recent python features (generators,
ternary operator, ect.)
* update the documentation on the way (it's lacking atm)
Differential revision: https://developer.blender.org/D319
Author: flokkievids (Folkert de Vries)
Reviewed by: kjym3 (Tamito Kajiyama)
These modifiers were not working properly when they were applied to strokes
whose backbone was already modified by other geometry shaders. This problem
was due to the use of Normal2DF0D that compute 2D vertex normals based on
the underlying FEdges up on which initial stroke geometry is defined. Now vertex
normals are computed on the basis of modified stroke vertices.
A helper function 'stroke_normal' for computing normals of stroke vertices was
added to the 'freestyle.utils' API module.
Additional bug fixes were also done along with the code updates:
* Fix for the use of old Interface1D.pointsBegin() and .pointsEnd() method names
in the definition of pyDensityAnisotropyF1D and pyViewMapGradientNormF1D.
* Fix for wrong data types (int instead of bool) for:
- pyChainSilhouetteGenericIterator constructor and its .orientation property in
modules/freestyle/chainingiterators.py.
- SpatialNoiseShader constructor in styles/external_contour_sketchy.py.
- ChainSilhouetteIterator constructor in styles/multiple_parameterization.py.
Both C- and Python-coded API components were rearranged into logical groups.
New Python modules are packaged as follows:
freestyle - Top-level package
freestyle.types - Classes for core data structues (e.g., view map)
freestyle.chainingiterators - Pre-defined chaining iterators
freestyle.functions - Pre-defined 0D and 1D functions
freestyle.predicates - Pre-defined 0D and 1D predicates
freestyle.shaders - Pre-defined stroke shaders
freestyle.utils - Utility functions
The Python modules are installed in scripts/freestyle/modules. Pre-defined
styles are installed in scripts/freestyle/styles.
To-do: update styles according to the new Freestyle API package structure.
