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Fix T102257: Crash when making an Object as Effector set to Guide and trying to scrub the timeline

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rB67e23b4b2967 revealed the bug. But the bug already existed before,
it just wasn't triggered.

Apparently the problem happens because the python code generated in
`initGuiding()` cannot be executed twice.

The second time the `initGuiding()` code is executed, the local python
variables are removed to make way for the others, but the reference to
one of the grids in a `Solver` object (name='solver_guiding2') is still
being used somewhere. So an error is raised and a crash is forced.

The solution is to prevent the python code in `initGuiding()` from being
executed twice.

When `FLUID_DOMAIN_ACTIVE_GUIDE` is in `fds->active_fields` this
indicates that the pointer in `mPhiGuideIn` has been set and the guiding
is already computed (does not need to be computed again).

Maniphest Tasks: T102257

Differential Revision: https://developer.blender.org/D16416
This commit is contained in:
Germano Cavalcante
2022-11-09 12:09:55 -03:00
committed by Germano Cavalcante
parent e6b38deb9d
commit edc00429e8
1 changed files with 1 additions and 1 deletions
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2
intern/mantaflow/intern/MANTA_main.cpp
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@@ -58,7 +58,6 @@ MANTA::MANTA(int *res, FluidModifierData *fmd)
mUsingDiffusion = (fds->flags & FLUID_DOMAIN_USE_DIFFUSION) && mUsingLiquid;
mUsingViscosity = (fds->flags & FLUID_DOMAIN_USE_VISCOSITY) && mUsingLiquid;
mUsingMVel = (fds->flags & FLUID_DOMAIN_USE_SPEED_VECTORS) && mUsingLiquid;
mUsingGuiding = (fds->flags & FLUID_DOMAIN_USE_GUIDE);
mUsingDrops = (fds->particle_type & FLUID_DOMAIN_PARTICLE_SPRAY) && mUsingLiquid;
mUsingBubbles = (fds->particle_type & FLUID_DOMAIN_PARTICLE_BUBBLE) && mUsingLiquid;
mUsingFloats = (fds->particle_type & FLUID_DOMAIN_PARTICLE_FOAM) && mUsingLiquid;
@@ -68,6 +67,7 @@ MANTA::MANTA(int *res, FluidModifierData *fmd)
mUsingFire = (fds->active_fields & FLUID_DOMAIN_ACTIVE_FIRE) && mUsingSmoke;
mUsingColors = (fds->active_fields & FLUID_DOMAIN_ACTIVE_COLORS) && mUsingSmoke;
mUsingObstacle = (fds->active_fields & FLUID_DOMAIN_ACTIVE_OBSTACLE);
mUsingGuiding = (fds->active_fields & FLUID_DOMAIN_ACTIVE_GUIDE);
mUsingInvel = (fds->active_fields & FLUID_DOMAIN_ACTIVE_INVEL);
mUsingOutflow = (fds->active_fields & FLUID_DOMAIN_ACTIVE_OUTFLOW);