for offset2() with clear meaning.
New ClipperUtils functions: expand(), shrink() as an alternative
for offset() with clear meaning.
All offset values for the new functions are positive.
Various offsetting ClipperUtils (offset, offset2, offset2_ex) working
over Polygons were marked as unsafe, sometimes producing invalid output
if called for more than one polygon. These functions were reworked
to offset polygons one by one. The new functions working over Polygons
shall work the same way as the old safe ones working over ExPolygons,
but working with Polygons shall be computationally more efficient.
Improvements in FDM support generator:
1) For both grid and snug supports: Don't filter out supports for which
the contacts are completely reduced by support / object XY separation.
2) Rounding / merging of supports using the closing radius parameter is
now smoother, it does not produce sharp corners.
3) Snug supports: When calculating support interfaces, expand the projected
support contact areas to produce wider, printable and more stable interfaces.
4) Don't reduce support interfaces for snug supports for steep overhangs,
that would normally not need them. Snug supports often produce very
narrow support interface regions and turning them off makes the support
interfaces disappear.
Sometimes Clipper produces a polyline with more than 2 points when
clipping a line with a polygon or a set of polygons. We hope the intermediate
points are collinear with the line, so we may just ignore them.
Fixes Solid infill where there should be none #6482
Also the safety offsetting was revised to be enabled only where needed,
the "do safety offset" is now easy to discover by
a new ApplySafetyOffset::Yes enum, and safety offset over union, which
is better done by offset() / offset_ex() has been replaced with
new union_safety_offset() / union_safety_offset_ex() functions, which
better convey their meaning and which could be better optimized than
union() with the safety offset applied.
which was broken with 68666de521b1cb15e41ac6728c0e8d3b4b0d4ed0
"Reworked the "new" bridging to respect the bridge_flow_ratio
by maintaining extrusion spacing, but modifying the extrusion width
and / or height."
1) Removed the already commented-out scaling / unscaling when doing
"safe offsetting"
2) Removed some of the "safe offsetting" at calls where it never was used.
3) Reworked Clipper & ClipperUtils to pass Polygons / ExPolygons / Surfaces
as input parameters without conversion to ClipperLib::Paths. This
should save a lot of memory allocation and copying.
4) Reworked conversions from ClipperLib::Paths & PolyTree to Polygons /
ExPolygons to use the move operator to avoid many unnecessary allocations.
5) Reworked some "union with safe ofsetting" to "offset_ex", which should
be cheaper.
the code more readable and to highlight where PrintObject::region_volumes
are actually set and consumed.
2) Replaced Slic3r::clamp() with std::clamp(). They differ in the order
of their parameters, thus hopefully no new bugs were introduced.
3) Some refactoring of MultiMaterialSegmentation for efficiency.
Fixed some old support and infill issues.
Fixes support problem #4295
Fixes Parts of interface layer extends beyond supports and cannot be printed
Fixes support missing under horizontal overhang #6058
Fixes Slicer double-traces small sections of Rectilinear Supports, causes
Fixes plastic buildup and nozzle crashes #4951
Fixes Add "Angle Interface layers" #2969
Squashed commit of the following:
commit 4e13a8fe19abcc9aae39a9bc4c7953a743196504
Merge: 6ae766409 6f89da1f3
Author: Vojtech Bubnik <bubnikv@gmail.com>
Date: Fri Feb 5 11:19:35 2021 +0100
Merge remote-tracking branch 'remotes/origin/master' into vb_edgegrid_open_lines
commit 6ae76640942269993c942861f0444088843e3fa1
Author: Vojtech Bubnik <bubnikv@gmail.com>
Date: Fri Feb 5 11:14:48 2021 +0100
EdgeGrid enhancement to accept both the open and closed lines.
commit 36a5efcd558bd5fd5f46b5f561387a2c73221553
Author: Vojtech Bubnik <bubnikv@gmail.com>
Date: Fri Feb 5 10:52:14 2021 +0100
EdgeGrid improvements: Documentation, one bug fix after recent refactoring.
commit 6f89da1f39
Author: tamasmeszaros <meszaros.q@gmail.com>
Date: Thu Feb 4 20:31:50 2021 +0100
Disable libicu for boost-regex
Should have been disabled from the beginning
commit ffc77b1a72a0be9b5622fd33defeebb24bf07b34
Author: Vojtech Bubnik <bubnikv@gmail.com>
Date: Thu Feb 4 18:40:33 2021 +0100
EdgeGrid: Annotated those methods that do not work with open contours.
commit 8039a645b4bf0c46c99b90a9c34e7189d7442f86
Author: Vojtech Bubnik <bubnikv@gmail.com>
Date: Thu Feb 4 18:28:21 2021 +0100
Refactoring of EdgeGrid structure to support both closed and open lines.
with perimeters:
1) Increased accuracy of the contour length parametrization from
float to double, as double should capture the difference of
32bit coord_t with full accuracy (or at least very close).
2) The algorithm to insert the T-joint points into the infill perimeter
contour was improved to avoid inserting duplicate points.
Relies to:
Concentric Fill Start Point - New Feature Request #4948
Feature Request: Archimedean Chords - Option to define direction of travel (Inside-Out or Outside-In) #5214
Fixed some issues in internal anchors of the Adaptive Cubic infill.
The ugly and dangerous implicit casting operators in Line, MultiPoint,
Polyline and Polygon were made explicit.
