Storage medium storing image processing program for implementing controlled image display according to input coordinate, information processing device and method for image processing

When a user touches a first input point P1 with a touch pen (27) or the like, touch position data indicating a coordinate of this first input point P1 can be obtained. A first object (OBJ21) (stamp) is arranged in accordance with the first input point P1. When the user moves the touch pen (27) or the like to a second input point P2 while maintaining a touch state (slide operation), an orientation of the object (OBJ21) is changed in real time such that an angle reference line thereof coincides with a calculated reference line L2.