Lights: change sun light size to be specified as angle

This is the angular diameter as seen from earth, which is between 0.526° and
0.545° in reality. Sharing the size with other light types did not make much
sense and meant the unit was unclear.

Differential Revision: https://developer.blender.org/D4819

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_light.c b/source/blender/makesrna/intern/rna_light.c
index da2b5752a0f..54c8049d4d2 100644
--- a/source/blender/makesrna/intern/rna_light.c
+++ b/source/blender/makesrna/intern/rna_light.c
@@ -545,12 +545,20 @@ static void rna_def_spot_light(BlenderRNA *brna)
 static void rna_def_sun_light(BlenderRNA *brna)
 {
   StructRNA *srna;
+  PropertyRNA *prop;
 
   srna = RNA_def_struct(brna, "SunLight", "Light");
   RNA_def_struct_sdna(srna, "Light");
   RNA_def_struct_ui_text(srna, "Sun Light", "Constant direction parallel ray Light");
   RNA_def_struct_ui_icon(srna, ICON_LIGHT_SUN);
 
+  prop = RNA_def_property(srna, "angle", PROP_FLOAT, PROP_ANGLE);
+  RNA_def_property_float_sdna(prop, NULL, "sun_angle");
+  RNA_def_property_float_default(prop, DEG2RADF(0.526f));
+  RNA_def_property_range(prop, DEG2RADF(0.0f), DEG2RADF(180.0f));
+  RNA_def_property_ui_text(prop, "Angle", "Angular diameter of the Sun as seen from the Earth");
+  RNA_def_property_update(prop, 0, "rna_Light_update");
+
   rna_def_light_energy(srna, true);
   rna_def_light_shadow(srna, true);
 }