Arcengine 二次开发创建点对象，包括沿线创建，角平分线创建，构造角度距离法，构造角度交点法，构造偏移点发，构造偏转角度法，构造平行线上点法，后方交会定点法等-Arcengine secondary development to create point objects, including along the creation, angle bisectors to create, construct point distance, point of intersection const