GPencil Array - Add option for uniform random scaling

This patch adds the option to make the random scaling from the grease pencil array modifier uniform.
The current settings allow a separate value for each of the 3 scaling axis. The modifier also creates different seed values for each axis so there is no way to keep the random scaling uniform.
This patch creates 1 random seed value and applies it to each of the scaling axis.

Here is a demonstration of the previous behavior and the new optional behavior.
{F9485973}
{F9485981}

{F9485798}

Reviewed By: #grease_pencil, antoniov, pepeland

Differential Revision: https://developer.blender.org/D9764

1 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_gpencil_modifier.c b/source/blender/makesrna/intern/rna_gpencil_modifier.c
index 5f131de6a40..f0660392eaf 100644
--- a/source/blender/makesrna/intern/rna_gpencil_modifier.c
+++ b/source/blender/makesrna/intern/rna_gpencil_modifier.c
@@ -1560,6 +1560,11 @@ static void rna_def_modifier_gpencilarray(BlenderRNA *brna)
   RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_ARRAY_USE_RELATIVE);
   RNA_def_property_ui_text(prop, "Shift", "Enable shift");
   RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
+
+  prop = RNA_def_property(srna, "use_uniform_random_scale", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "flag", GP_ARRAY_UNIFORM_RANDOM_SCALE);
+  RNA_def_property_ui_text(prop, "Uniform Scale", "Use the same random seed for each scale axis for a uniform scale");
+  RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
 }
 
 static void rna_def_modifier_gpencilbuild(BlenderRNA *brna)