add comments

1 files changed, 4 insertions, 0 deletions

diff --git a/src/anim-atlas.cpp b/src/anim-atlas.cpp
index 54c12077..3679bc2a 100644
--- a/src/anim-atlas.cpp
+++ b/src/anim-atlas.cpp
@@ -86,6 +86,8 @@ auto anim_atlas::frame(rotation r, size_t frame) const -> const anim_frame&
     return g.frames[frame];
 }
 
+// get uv's for atlas frame
+// ORDER: bottom left, top right, bottom left, top left
 auto anim_atlas::texcoords_for_frame(rotation r, size_t i, bool mirror) const noexcept -> texcoords
 {
     const auto f = frame(r, i);
@@ -108,6 +110,8 @@ auto anim_atlas::texcoords_for_frame(rotation r, size_t i, bool mirror) const no
         }};
 }
 
+// get vertexes for atlas frame
+// ORDER: bottom left, top right, bottom left, top left
 auto anim_atlas::frame_quad(const Vector3& center, rotation r, size_t i) const noexcept -> quad
 {
     enum : size_t { x, y, z };