From af8cb99b10b03df02ff5334a809239ee4c6d6ae2 Mon Sep 17 00:00:00 2001
From: Sean Kim <SeanCTKim@protonmail.com>
Date: Mon, 29 Sep 2025 19:13:56 +0200
Subject: [PATCH] Paint: Add asserts for BKE_brush_curve_strength

Neither the `distance` or `brush_radius` parameters make sense to be
negative and can cause odd behaviors.

Pull Request: https://projects.blender.org/blender/blender/pulls/146698
---
 source/blender/blenkernel/intern/brush.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/blenkernel/intern/brush.cc b/source/blender/blenkernel/intern/brush.cc
index 01c260f7f9d..eca7bbd4d75 100644
--- a/source/blender/blenkernel/intern/brush.cc
+++ b/source/blender/blenkernel/intern/brush.cc
@@ -1569,6 +1569,9 @@ float BKE_brush_curve_strength(const eBrushCurvePreset preset,
                                const float distance,
                                const float brush_radius)
 {
+  BLI_assert(distance >= 0.0f);
+  BLI_assert(brush_radius >= 0.0f);
+
   float p = distance;
   float strength = 1.0f;