View Compilation Error

0_0_1951958_32304.cpp: In function `double calcdw()':
0_0_1951958_32304.cpp:112: error: invalid initialization of non-const reference of type 'TPoint&' from a temporary of type 'TPoint'
0_0_1951958_32304.cpp:83: error: in passing argument 1 of `int inside_polygon(TPoint&, TPoint*, int)'