Fluid Simulation:

* Replaced the hard coded viscosity presets with Python ones.

* Added version check, so older files load fine.
Loading new files into 2.62 also works fine.

release/scripts/presets/fluid/honey.py

@@ -0,0 +1,3 @@
+import bpy
+bpy.context.fluid.settings.viscosity_base = 2.0
+bpy.context.fluid.settings.viscosity_exponent = 3

release/scripts/presets/fluid/oil.py

@@ -0,0 +1,3 @@
+import bpy
+bpy.context.fluid.settings.viscosity_base = 5.0
+bpy.context.fluid.settings.viscosity_exponent = 5

release/scripts/presets/fluid/water.py

@@ -0,0 +1,3 @@
+import bpy
+bpy.context.fluid.settings.viscosity_base = 1.0
+bpy.context.fluid.settings.viscosity_exponent = 6

release/scripts/startup/bl_operators/presets.py

@@ -294,6 +294,23 @@ class AddPresetCloth(AddPresetBase, Operator):
 
     preset_subdir = "cloth"
 
+class AddPresetFluid(AddPresetBase, Operator):
+    '''Add a Fluid Preset'''
+    bl_idname = "fluid.preset_add"
+    bl_label = "Add Fluid Preset"
+    preset_menu = "FLUID_MT_presets"
+    
+    preset_defines = [
+    "fluid = bpy.context.fluid"
+    ]
+    
+    preset_values = [
+    "fluid.settings.viscosity_base",
+    "fluid.settings.viscosity_exponent",
+    ]
+    
+    preset_subdir = "fluid"
+
 
 class AddPresetSunSky(AddPresetBase, Operator):
     '''Add a Sky & Atmosphere Preset'''

release/scripts/startup/bl_ui/properties_physics_fluid.py

@@ -18,7 +18,13 @@
 
 # <pep8 compliant>
 import bpy
-from bpy.types import Panel
+from bpy.types import Panel, Menu
+
+class FLUID_MT_presets(Menu):
+    bl_label = "Fluid Presets"
+    preset_subdir = "fluid"
+    preset_operator = "script.execute_preset"
+    draw = Menu.draw_preset
 
 
 class PhysicButtonsPanel():
@@ -222,16 +228,14 @@ class PHYSICS_PT_domain_gravity(PhysicButtonsPanel, Panel):
 
         col = split.column()
         col.label(text="Viscosity Presets:")
-        sub = col.column(align=True)
-        sub.prop(fluid, "viscosity_preset", text="")
-
-        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()
+        sub = col.row(align=True)
+        sub.menu("FLUID_MT_presets", text=bpy.types.FLUID_MT_presets.bl_label)
+        sub.operator("fluid.preset_add", text="", icon='ZOOMIN')
+        sub.operator("fluid.preset_add", text="", icon='ZOOMOUT').remove_active = True
+        
+        subsub = col.column(align=True)
+        subsub.prop(fluid, "viscosity_base", text="Base")
+        subsub.prop(fluid, "viscosity_exponent", text="Exponent", slider=True)
 
         col.label(text="Optimization:")
         col.prop(fluid, "grid_levels", slider=True)

source/blender/blenkernel/BKE_blender.h

@@ -42,7 +42,7 @@ extern "C" {
  * and keep comment above the defines.
  * Use STRINGIFY() rather than defining with quotes */
 #define BLENDER_VERSION			262
-#define BLENDER_SUBVERSION		3
+#define BLENDER_SUBVERSION		4
 
 #define BLENDER_MINVERSION		250
 #define BLENDER_MINSUBVERSION	0

source/blender/blenloader/intern/readfile.c

@@ -13323,6 +13323,30 @@ static void do_versions(FileData *fd, Library *lib, Main *main)
 		}
 	}
 
+	if (main->versionfile < 262 || (main->versionfile == 262 && main->subversionfile < 4))
+	{
+		/* Read Viscosity presets from older files */
+		Object *ob;
+
+		for (ob = main->object.first; ob; ob = ob->id.next) {
+			ModifierData *md;
+			for (md = ob->modifiers.first; md; md = md->next) {
+				if (md->type == eModifierType_Fluidsim) {
+					FluidsimModifierData *fmd = (FluidsimModifierData *)md;
+					if(fmd->fss->viscosityMode == 3) {
+						fmd->fss->viscosityValue = 5.0;
+						fmd->fss->viscosityExponent = 5;
+					}
+					else if(fmd->fss->viscosityMode == 4) {
+						fmd->fss->viscosityValue = 2.0;
+						fmd->fss->viscosityExponent = 3;
+					}
+				}
+			}
+		}
+	}
+
+
 
 	{
 		/* Default for old files is to save particle rotations to pointcache */

source/blender/editors/physics/physics_fluid.c

@@ -98,19 +98,7 @@
 
 static float get_fluid_viscosity(FluidsimSettings *settings)
 {
-	switch (settings->viscosityMode) {
-		case 0:		/* unused */
-			return -1.0;
-		case 2:		/* water */
-			return 1.0e-6;
-		case 3:		/* some (thick) oil */
-			return 5.0e-5;
-		case 4:		/* ca. honey */
-			return 2.0e-3;
-		case 1:		/* manual */
-		default:
-			return (1.0f/powf(10.0f, settings->viscosityExponent)) * settings->viscosityValue;
-	}
+	return (1.0f/powf(10.0f, settings->viscosityExponent)) * settings->viscosityValue;
 }
 
 static float get_fluid_rate(FluidsimSettings *settings)

source/blender/makesdna/DNA_object_fluidsim.h

@@ -35,6 +35,7 @@
 #define __DNA_OBJECT_FLUIDSIM_H__
 
 #include "DNA_ID.h"
+#include "DNA_defs.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -66,7 +67,7 @@ typedef struct FluidsimSettings {
 
 	/* fluid properties */
 	float viscosityValue;
-	short viscosityMode;
+	short viscosityMode DNA_DEPRECATED;
 	short viscosityExponent;
 	/* gravity strength */
 	float grav[3];

source/blender/makesrna/intern/rna_fluidsim.c

@@ -269,13 +269,6 @@ static void rna_def_fluidsim_domain(BlenderRNA *brna)
 		{OB_FSDOM_FINAL, "FINAL", 0, "Final", "Display final quality results"},
 		{0, NULL, 0, NULL, NULL}};
 
-	static EnumPropertyItem viscosity_items[] = {
-		{1, "MANUAL", 0, "Manual", "Manual viscosity settings"},
-		{2, "WATER", 0, "Water", "Viscosity of 1.0 * 10^-6"},
-		{3, "OIL", 0, "Oil", "Viscosity of 5.0 * 10^-5"},
-		{4, "HONEY", 0, "Honey", "Viscosity of 2.0 * 10^-3"},
-		{0, NULL, 0, NULL, NULL}};
-
 	srna = RNA_def_struct(brna, "DomainFluidSettings", "FluidSettings");
 	RNA_def_struct_sdna(srna, "FluidsimSettings");
 	RNA_def_struct_ui_text(srna, "Domain Fluid Simulation Settings",
@@ -360,12 +353,6 @@ static void rna_def_fluidsim_domain(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "animRate");
 	RNA_def_property_range(prop, 0.0, 100.0);
 	RNA_def_property_ui_text(prop, "Simulation Speed", "Fluid motion rate (0 = stationary, 1 = normal speed)");
-	
-	prop = RNA_def_property(srna, "viscosity_preset", PROP_ENUM, PROP_NONE);
-	RNA_def_property_enum_sdna(prop, NULL, "viscosityMode");
-	RNA_def_property_enum_items(prop, viscosity_items);
-	RNA_def_property_ui_text(prop, "Viscosity Preset",
-	                         "Set viscosity of the fluid to a preset value, or use manual input");
 
 	prop = RNA_def_property(srna, "viscosity_base", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "viscosityValue");

source/blender/modifiers/intern/MOD_fluidsim_util.c

@@ -85,7 +85,6 @@ void fluidsim_init(FluidsimModifierData *fluidmd)
 		fss->guiDisplayMode = 2; // preview
 		fss->renderDisplayMode = 3; // render
 
-		fss->viscosityMode = 2; // default to water
 		fss->viscosityValue = 1.0;
 		fss->viscosityExponent = 6;