use BLI math length functions for distance compositor operations.

2 files changed, 3 insertions, 5 deletions

diff --git a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp
index df3809ba129..d3309e0c978 100644
--- a/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp
+++ b/source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp
@@ -46,9 +46,7 @@ void DistanceRGBMatteOperation::deinitExecution()
 
 float DistanceRGBMatteOperation::calculateDistance(float key[4], float image[4])
 {
-	return sqrt(pow((key[0] - image[0]), 2) +
-	            pow((key[1] - image[1]), 2) +
-	            pow((key[2] - image[2]), 2));
+	return len_v3v3(key, image);
 }
 
 void DistanceRGBMatteOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
diff --git a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cpp b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cpp
index 32ed7486f5b..0a6f1fdfd31 100644
--- a/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cpp
+++ b/source/blender/compositor/operations/COM_DistanceYCCMatteOperation.cpp
@@ -29,7 +29,7 @@ DistanceYCCMatteOperation::DistanceYCCMatteOperation() : DistanceRGBMatteOperati
 
 float DistanceYCCMatteOperation::calculateDistance(float key[4], float image[4])
 {
-	return sqrt(pow((key[1] - image[1]), 2) +
-	            pow((key[2] - image[2]), 2));
+	/* only measure the second 2 values */
+	return len_v2v2(key + 1, image + 1);
 }