Move bUnit_getScaleUnit -> BKE_scene_unit_scale

unit.c intentionally doesn't include DNA or BKE headers (except its own)

source/blender/blenkernel/BKE_scene.h

@@ -48,6 +48,7 @@ struct RenderData;
 struct SceneRenderLayer;
 struct Scene;
 struct Text;
+struct UnitSettings;
 struct Main;
 
 #define SCE_COPY_NEW        0
@@ -138,6 +139,8 @@ bool BKE_scene_check_rigidbody_active(const struct Scene *scene);
 int BKE_scene_num_threads(const struct Scene *scene);
 int BKE_render_num_threads(const struct RenderData *r);
 
+double BKE_scene_unit_scale(const struct UnitSettings *unit, const int unit_type, double value);
+
 #ifdef __cplusplus
 }
 #endif

source/blender/blenkernel/BKE_unit.h

@@ -31,8 +31,6 @@
 extern "C" {
 #endif
 
-struct UnitSettings;
-
 /* in all cases the value is assumed to be scaled by the user preference */
 
 /* humanly readable representation of a value in units (used for button drawing) */
@@ -41,11 +39,6 @@ size_t  bUnit_AsString(char *str, int len_max, double value, int prec, int syste
 /* replace units with values, used before python button evaluation */
 bool bUnit_ReplaceString(char *str, int len_max, const char *str_prev, double scale_pref, int system, int type);
 
-/* Apply the needed correction factor to value, based on unit_type (only length-related are affected currently)
- * and unit->scale_length.
- */
-double bUnit_getScaleUnit(struct UnitSettings *unit, const int unit_type, double value);
-
 /* make string keyboard-friendly: 10µm --> 10um */
 void bUnit_ToUnitAltName(char *str, int len_max, const char *orig_str, int system, int type);
 

source/blender/blenkernel/intern/scene.c

@@ -82,6 +82,7 @@
 #include "BKE_scene.h"
 #include "BKE_sequencer.h"
 #include "BKE_sound.h"
+#include "BKE_unit.h"
 #include "BKE_world.h"
 
 #include "RE_engine.h"
@@ -1970,3 +1971,29 @@ int BKE_scene_num_threads(const Scene *scene)
 {
 	return BKE_render_num_threads(&scene->r);
 }
+
+/* Apply the needed correction factor to value, based on unit_type (only length-related are affected currently)
+ * and unit->scale_length.
+ */
+double BKE_scene_unit_scale(const UnitSettings *unit, const int unit_type, double value)
+{
+	if (unit->system == USER_UNIT_NONE) {
+		/* Never apply scale_length when not using a unit setting! */
+		return value;
+	}
+
+	switch (unit_type) {
+		case B_UNIT_LENGTH:
+			return value * (double)unit->scale_length;
+		case B_UNIT_CAMERA:
+			return value * (double)unit->scale_length;
+		case B_UNIT_AREA:
+			return value * pow(unit->scale_length, 2);
+		case B_UNIT_VOLUME:
+			return value * pow(unit->scale_length, 3);
+		case B_UNIT_MASS:
+			return value * pow(unit->scale_length, 3);
+		default:
+			return value;
+	}
+}

source/blender/blenkernel/intern/unit.c

@@ -37,12 +37,12 @@
 
 #include "BKE_unit.h"  /* own include */
 
-#include "DNA_scene_types.h"
-
 #ifdef WIN32
 #  include "BLI_winstuff.h"
 #endif
 
+/* no BKE or DNA includes! */
+
 #define TEMP_STR_SIZE 256
 
 #define SEP_CHR		'#'
@@ -791,29 +791,6 @@ double bUnit_BaseScalar(int system, int type)
 	return unit_default(usys)->scalar;
 }
 
-double bUnit_getScaleUnit(UnitSettings *unit, const int unit_type, double value)
-{
-	if (unit->system == USER_UNIT_NONE) {
-		/* Never apply scale_length when not using a unit setting! */
-		return value;
-	}
-
-	switch (unit_type) {
-		case B_UNIT_LENGTH:
-			return value * (double)unit->scale_length;
-		case B_UNIT_CAMERA:
-			return value * (double)unit->scale_length;
-		case B_UNIT_AREA:
-			return value * pow(unit->scale_length, 2);
-		case B_UNIT_VOLUME:
-			return value * pow(unit->scale_length, 3);
-		case B_UNIT_MASS:
-			return value * pow(unit->scale_length, 3);
-		default:
-			return value;
-	}
-}
-
 /* external access */
 bool bUnit_IsValid(int system, int type)
 {

source/blender/editors/interface/interface.c

@@ -51,6 +51,7 @@
 
 #include "BKE_context.h"
 #include "BKE_unit.h"
+#include "BKE_scene.h"
 #include "BKE_screen.h"
 #include "BKE_idprop.h"
 
@@ -1942,13 +1943,13 @@ static double ui_get_but_scale_unit(uiBut *but, double value)
 	UnitSettings *unit = but->block->unit;
 	int unit_type = uiButGetUnitType(but);
 
-	/* Time unit is a bit special, not handled by bUnit_getScaleUnit() for now. */
+	/* Time unit is a bit special, not handled by BKE_scene_unit_scale() for now. */
 	if (unit_type == PROP_UNIT_TIME) { /* WARNING - using evil_C :| */
 		Scene *scene = CTX_data_scene(but->block->evil_C);
 		return FRA2TIME(value);
 	}
 	else {
-		return bUnit_getScaleUnit(unit, RNA_SUBTYPE_UNIT_VALUE(unit_type), value);
+		return BKE_scene_unit_scale(unit, RNA_SUBTYPE_UNIT_VALUE(unit_type), value);
 	}
 }
 

source/blender/editors/util/numinput.c

@@ -33,6 +33,7 @@
 #include "BLI_string_cursor_utf8.h"
 
 #include "BKE_context.h"
+#include "BKE_scene.h"
 #include "BKE_unit.h"
 
 #include "DNA_scene_types.h"
@@ -98,7 +99,7 @@ void outputNumInput(NumInput *n, char *str, UnitSettings *unit_settings)
 		const short i = (n->flag & NUM_AFFECT_ALL && n->idx != j && !(n->val_flag[j] & NUM_EDITED)) ? 0 : j;
 
 		/* Use scale_length if needed! */
-		const float fac = (float)bUnit_getScaleUnit(unit_settings, n->unit_type[j], 1.0);
+		const float fac = (float)BKE_scene_unit_scale(unit_settings, n->unit_type[j], 1.0);
 
 		if (n->val_flag[i] & NUM_EDITED) {
 			/* Get the best precision, allows us to draw '10.0001' as '10' instead! */
@@ -482,7 +483,7 @@ bool handleNumInput(bContext *C, NumInput *n, const wmEvent *event)
 		const char *default_unit = NULL;
 
 		/* Use scale_length if needed! */
-		const float fac = (float)bUnit_getScaleUnit(&sce->unit, n->unit_type[idx], 1.0);
+		const float fac = (float)BKE_scene_unit_scale(&sce->unit, n->unit_type[idx], 1.0);
 
 		/* Make radian default unit when needed. */
 		if (n->unit_use_radians && n->unit_type[idx] == B_UNIT_ROTATION)