Cleanup: remove compare_len_squared utility

There isn't any advantage to this over comparing the squared length.

4 files changed, 12 insertions, 19 deletions

diff --git a/source/blender/blenlib/BLI_math_vector.h b/source/blender/blenlib/BLI_math_vector.h
index f3908cf7462..c9285466259 100644
--- a/source/blender/blenlib/BLI_math_vector.h
+++ b/source/blender/blenlib/BLI_math_vector.h
@@ -204,6 +204,7 @@ MINLINE float len_v2v2(const float a[2], const float b[2]) ATTR_WARN_UNUSED_RESU
 MINLINE float len_v2v2_int(const int v1[2], const int v2[2]);
 MINLINE float len_squared_v2v2(const float a[2], const float b[2]) ATTR_WARN_UNUSED_RESULT;
 MINLINE float len_squared_v3v3(const float a[3], const float b[3]) ATTR_WARN_UNUSED_RESULT;
+MINLINE float len_squared_v4v4(const float a[4], const float b[4]) ATTR_WARN_UNUSED_RESULT;
 MINLINE float len_manhattan_v2v2(const float a[2], const float b[2]) ATTR_WARN_UNUSED_RESULT;
 MINLINE int   len_manhattan_v2v2_int(const int a[2], const int b[2]) ATTR_WARN_UNUSED_RESULT;
 MINLINE float len_manhattan_v3v3(const float a[3], const float b[3]) ATTR_WARN_UNUSED_RESULT;
@@ -288,8 +289,6 @@ MINLINE bool compare_v3v3_relative(const float a[3], const float b[3], const flo
 MINLINE bool compare_v4v4_relative(const float a[4], const float b[4], const float limit, const int max_ulps)  ATTR_WARN_UNUSED_RESULT;
 
 MINLINE bool compare_len_v3v3(const float a[3], const float b[3], const float limit)  ATTR_WARN_UNUSED_RESULT;
-MINLINE bool compare_len_squared_v3v3(const float a[3], const float b[3], const float limit)  ATTR_WARN_UNUSED_RESULT;
-MINLINE bool compare_len_squared_v4v4(const float a[4], const float b[4], const float limit)  ATTR_WARN_UNUSED_RESULT;
 
 MINLINE float line_point_side_v2(const float l1[2], const float l2[2], const float pt[2]) ATTR_WARN_UNUSED_RESULT;
 
diff --git a/source/blender/blenlib/intern/BLI_kdtree.c b/source/blender/blenlib/intern/BLI_kdtree.c
index e9b8d173eb1..29e6446528a 100644
--- a/source/blender/blenlib/intern/BLI_kdtree.c
+++ b/source/blender/blenlib/intern/BLI_kdtree.c
@@ -782,7 +782,7 @@ static void deduplicate_recursive(const struct DeDuplicateParams *p, uint i)
 	}
 	else {
 		if ((p->search != node->index) && (p->duplicates[node->index] == -1)) {
-			if (compare_len_squared_v3v3(node->co, p->search_co, p->range_sq)) {
+			if (len_squared_v3v3(node->co, p->search_co) <= p->range_sq) {
 				p->duplicates[node->index] = (int)p->search;
 				*p->duplicates_found += 1;
 			}
diff --git a/source/blender/blenlib/intern/math_vector_inline.c b/source/blender/blenlib/intern/math_vector_inline.c
index 80bdeec5949..f22b2a7a457 100644
--- a/source/blender/blenlib/intern/math_vector_inline.c
+++ b/source/blender/blenlib/intern/math_vector_inline.c
@@ -952,6 +952,14 @@ MINLINE float len_squared_v3v3(const float a[3], const float b[3])
 	return dot_v3v3(d, d);
 }
 
+MINLINE float len_squared_v4v4(const float a[4], const float b[4])
+{
+	float d[4];
+
+	sub_v4_v4v4(d, b, a);
+	return dot_v4v4(d, d);
+}
+
 MINLINE float len_manhattan_v2v2(const float a[2], const float b[2])
 {
 	float d[2];
@@ -1197,20 +1205,6 @@ MINLINE bool compare_len_v3v3(const float v1[3], const float v2[3], const float
 	return (dot_v3v3(d, d) <= (limit * limit));
 }
 
-MINLINE bool compare_len_squared_v3v3(const float v1[3], const float v2[3], const float limit_sq)
-{
-	float d[3];
-	sub_v3_v3v3(d, v1, v2);
-	return (dot_v3v3(d, d) <= limit_sq);
-}
-
-MINLINE bool compare_len_squared_v4v4(const float v1[4], const float v2[4], const float limit_sq)
-{
-	float d[4];
-	sub_v4_v4v4(d, v1, v2);
-	return (dot_v4v4(d, d) <= limit_sq);
-}
-
 /**
  * <pre>
  *        + l1
diff --git a/source/blender/editors/sculpt_paint/paint_image_2d.c b/source/blender/editors/sculpt_paint/paint_image_2d.c
index 990017d3a20..cad75efbf56 100644
--- a/source/blender/editors/sculpt_paint/paint_image_2d.c
+++ b/source/blender/editors/sculpt_paint/paint_image_2d.c
@@ -1415,7 +1415,7 @@ static void paint_2d_fill_add_pixel_byte(
 		rgba_uchar_to_float(color_f, color_b);
 		straight_to_premul_v4(color_f);
 
-		if (compare_len_squared_v4v4(color_f, color, threshold_sq)) {
+		if (len_squared_v4v4(color_f, color) <= threshold_sq) {
 			BLI_stack_push(stack, &coordinate);
 		}
 		BLI_BITMAP_SET(touched, coordinate, true);
@@ -1434,7 +1434,7 @@ static void paint_2d_fill_add_pixel_float(
 	coordinate = ((size_t)y_px) * ibuf->x + x_px;
 
 	if (!BLI_BITMAP_TEST(touched, coordinate)) {
-		if (compare_len_squared_v4v4(ibuf->rect_float + 4 * coordinate, color, threshold_sq)) {
+		if (len_squared_v4v4(ibuf->rect_float + 4 * coordinate, color) <= threshold_sq) {
 			BLI_stack_push(stack, &coordinate);
 		}
 		BLI_BITMAP_SET(touched, coordinate, true);