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-rw-r--r--src/o3d/vertex_data.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/o3d/vertex_data.h b/src/o3d/vertex_data.h
index dda881b..ec5fa25 100644
--- a/src/o3d/vertex_data.h
+++ b/src/o3d/vertex_data.h
@@ -5,8 +5,8 @@ namespace engine::o3d {
class VertexData {
public:
- static VertexData lerp(VertexData& vd1, VertexData& vd2, float s);
- static VertexData bilerp(VertexData& vd1, VertexData& vd2, VertexData& vd3, float s, float t);
+ static VertexData lerp(const VertexData& vd1, const VertexData& vd2, float s);
+ static VertexData bilerp(const VertexData& vd1, const VertexData& vd2, const VertexData& vd3, float s, float t);
VertexData();
};