Function MeanPoint

jni/stasm/landmarks.cpp:9–16

namespace stasm
{
double MeanPoint(
    const Shape& shape,   // in
    int          ipoint1, // in
    int          ipoint2, // in
    int          ix)      // in: IX or IY
{
    return (shape(ipoint1, ix) + shape(ipoint2, ix)) / 2;
}

void PrevAndNextLandmarks(
    int&         prev,        // out