Fluidsim - Restoring simulation speed control (ZanQdo request)

This commit restores support for freezing or speeding up physics sims. Animate
the "Speed" parameter under Domain->Time, which controls a multiplier factor for
the rate at which the sim proceeds (i.e. the old "Fac-Tim" setting).

Notes:
* Subversion bumped to 4 to patch up defaults for new value so that old sim
files will still run correctly
* Names/descriptions could do with some tweaking
* Porting this across was not that obvious since quite a bit of stuff had
changed (as in, been cleaned up). However, from tests so far, it seems to work
well.

1 files changed, 5 insertions, 0 deletions

diff --git a/release/scripts/startup/bl_ui/properties_physics_fluid.py b/release/scripts/startup/bl_ui/properties_physics_fluid.py
index 8717a9b9114..114d74f1060 100644
--- a/release/scripts/startup/bl_ui/properties_physics_fluid.py
+++ b/release/scripts/startup/bl_ui/properties_physics_fluid.py
@@ -79,6 +79,7 @@ class PHYSICS_PT_fluid(PhysicButtonsPanel, Panel):
             sub = col.column(align=True)
             sub.prop(fluid, "start_time", text="Start")
             sub.prop(fluid, "end_time", text="End")
+            col.prop(fluid, "simulation_rate", text="Speed")
 
             col = split.column()
             col.label()
@@ -230,6 +231,10 @@ class PHYSICS_PT_domain_gravity(PhysicButtonsPanel, Panel):
         if fluid.viscosity_preset == 'MANUAL':
             sub.prop(fluid, "viscosity_base", text="Base")
             sub.prop(fluid, "viscosity_exponent", text="Exponent", slider=True)
+        else:
+            # just for padding to prevent jumping around
+            sub.separator()
+            sub.separator()
 
         col.label(text="Optimization:")
         col.prop(fluid, "grid_levels", slider=True)