use vectors without open-coding vector ops

Suggested by mosra.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/camera-offset.cpp b/src/camera-offset.cpp
index 40bf66dd..f837fd1f 100644
--- a/src/camera-offset.cpp
+++ b/src/camera-offset.cpp
@@ -10,9 +10,7 @@ with_shifted_camera_offset::with_shifted_camera_offset(tile_shader& shader, shor
     _shader{shader},
     _offset{shader.camera_offset()}
 {
-    const auto offset = _offset +  tile_shader::project({double(x)*TILE_MAX_DIM*dTILE_SIZE[0],
-                                                         double(y)*TILE_MAX_DIM*dTILE_SIZE[1],
-                                                         0});
+    const auto offset = _offset +  tile_shader::project(Vector3d(x, y, 0) * TILE_MAX_DIM20d);
     _shader.set_camera_offset(offset);
 }