* Show the type of a constraint.
* Show the workplane a constraint is in, for constraints which can
be both projected to workplane or be free in 3d space.
* Clearly distinguish reference from non-reference constraints.
* Add a checkbox for toggling the reference option.
* When showing requests a constraint applies to, highlight on hover
the specific entity being constrained, not just the first one.
This has been completely broken since 2018 (commit a93283df), and no
one noticed, so it probably wasn't useful. Instead of fixing it, just
drop the feature and a bunch of odd nonportable code.
Turning a reference dimension into a constraint one can make
the sketch unsolvable, which suggests Edit → Undo, which would undo
either too much or nothing at all.
The mimalloc temporary heap is a thread-local object that uses RAII
to manage heap lifetimes even in threads that are created implicitly,
e.g. by OpenMP. However, not all threads are necessarily created by
the application; graphics drivers may create their own threads, and
this can lead to deadlocks when combined with library unloading.
Fixes#657.
The heaps are wrapped in a RAIIish thread_local handler,
since being affined affined to a single thread for allocations is
required by the API
Ref: #642
Resolve issue #489 helix has stairsteps.
Force helix axis line to 8 segments.
Grid triangulation to use a minimum of 4 segments for degree>1.
Adds twist dependence for grid triangulation with degree=1.
Added a max_dt parameter for PWL creation and use that for helical edges.
This is unfortunate, but OpenMP is not available on some toolchains
(most MinGW builds) and, more importantly, breaks the distribution
model we use on Windows, which is a single self-contained executable.
Leave the OpenMP disabled by default everywhere so that we don't have
any second-class platforms where SolveSpace is slower than on first-
class ones.
Fixes#631.
The counter was added solely as a debug feature in commit e7c8c1c8,
which introduced the new Canvas system. It doesn't work all that well
and brings little value, so let's get rid of the visual noise.
This commit continues the work started in commits 521473ee and
e84fd464 that parallelizes certain geometric operations. This commit
cleans up the temporary arena implementations and makes them
thread-safe.
Also, in commit 521473ee, a call to FreeAllTemporary() was added
during initialization to create the heap on Windows. This is now
not necessary as the heap is created transparently on the first call
to AllocTemporary().
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