BLI_float4x4: Add operator[]

This makes porting existing code using `float[4][4]` easier.

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_float4x4.hh b/source/blender/blenlib/BLI_float4x4.hh
index 81c969d02d0..f451f58f6cf 100644
--- a/source/blender/blenlib/BLI_float4x4.hh
+++ b/source/blender/blenlib/BLI_float4x4.hh
@@ -107,6 +107,20 @@ struct float4x4 {
     return &values[0][0];
   }
 
+  float *operator[](const int64_t index)
+  {
+    BLI_assert(index >= 0);
+    BLI_assert(index < 4);
+    return &values[index][0];
+  }
+
+  const float *operator[](const int64_t index) const
+  {
+    BLI_assert(index >= 0);
+    BLI_assert(index < 4);
+    return &values[index][0];
+  }
+
   using c_style_float4x4 = float[4][4];
   c_style_float4x4 &ptr()
   {