Support Tensor as input for make_tuple (#84)

Author: noahstier

torchsparse/utils/helpers.py

@@ -256,3 +256,10 @@ def make_tuple(inputs, dimension=3):
     elif isinstance(inputs, tuple):
         assert len(inputs) == dimension, 'Input length and dimension mismatch'
         return inputs
+    elif isinstance(inputs, torch.Tensor):
+        inputs = inputs.squeeze()
+        shape = inputs.shape
+        assert len(shape) == 1 and shape[0] == dimension, 'Input length and dimension mismatch'
+        if inputs.is_cuda:
+            inputs = inputs.cpu()
+        return tuple((t.item() for t in inputs))