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Fluid physics for particles by Raul Fernandez Hernandez (Farsthary) and Stephen Swhitehorn:

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This patch add SPH (Smoothed Particle Hydrodynamics)fluid dynamics to the
blender particle system. SPH is an boundless Lagrangian interpolation
technique to solve the fluid motion equations.
 
From liquids to sand, goo and gases could be simulated using the particle
system.
 
It features internal viscosity, a double density relaxation that accounts
for surface tension effects, static internal springs for plastic fluids,
and buoyancy for gases.

---------------------------------------

This is a commit of the core fluid physics. Raul will work on proper
documentation soon and more features such as surface extraction from
the particle point cloud and increasing stability by sub-frame calculations
later.
This commit is contained in:
Janne Karhu
2010-04-04 12:29:06 +00:00
parent d574e8b826
commit c5871b8750
8 changed files with 322 additions and 8 deletions
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47
release/scripts/ui/properties_particle.py
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@@ -395,6 +395,43 @@ class PARTICLE_PT_physics(ParticleButtonsPanel):
sub.prop(part, "integrator")
sub.prop(part, "time_tweak")
elif part.physics_type == 'FLUID':
fluid = part.fluid
split = layout.split()
sub = split.column()
sub.label(text="Forces:")
sub.prop(part, "brownian_factor")
sub.prop(part, "drag_factor", slider=True)
sub.prop(part, "damp_factor", slider=True)
sub = split.column()
sub.prop(part, "size_deflect")
sub.prop(part, "die_on_collision")
sub.prop(part, "integrator")
sub.prop(part, "time_tweak")
split = layout.split()
sub = split.column()
sub.label(text="Fluid Interaction:")
sub.prop(fluid, "fluid_radius", slider=True)
sub.prop(fluid, "stiffness_k")
sub.prop(fluid, "stiffness_knear")
sub.prop(fluid, "rest_density")
sub.label(text="Viscosity:")
sub.prop(fluid, "viscosity_omega", text="Linear")
sub.prop(fluid, "viscosity_beta", text="Square")
sub = split.column()
sub.label(text="Springs:")
sub.prop(fluid, "spring_k", text="Force", slider=True)
sub.prop(fluid, "rest_length", slider=True)
layout.label(text="Multiple fluids interactions:")
sub.label(text="Buoyancy:")
sub.prop(fluid, "buoyancy", slider=True)
elif part.physics_type == 'KEYED':
split = layout.split()
sub = split.column()
@@ -454,7 +491,7 @@ class PARTICLE_PT_physics(ParticleButtonsPanel):
col.prop(boids, "banking", slider=True)
col.prop(boids, "height", slider=True)
if part.physics_type == 'KEYED' or part.physics_type == 'BOIDS':
if part.physics_type == 'KEYED' or part.physics_type == 'BOIDS' or part.physics_type == 'FLUID':
if part.physics_type == 'BOIDS':
layout.label(text="Relations:")
@@ -484,7 +521,7 @@ class PARTICLE_PT_physics(ParticleButtonsPanel):
col.active = psys.keyed_timing
col.prop(key, "time")
col.prop(key, "duration")
else:
elif part.physics_type == 'BOIDS':
sub = row.row()
#doesn't work yet
#sub.red_alert = key.valid
@@ -492,6 +529,12 @@ class PARTICLE_PT_physics(ParticleButtonsPanel):
sub.prop(key, "system", text="System")
layout.prop(key, "mode", expand=True)
elif part.physics_type == 'FLUID':
sub = row.row()
#doesn't work yet
#sub.red_alert = key.valid
sub.prop(key, "object", text="")
sub.prop(key, "system", text="System")
class PARTICLE_PT_boidbrain(ParticleButtonsPanel):