| 摘要 |
PROBLEM TO BE SOLVED: To provide an image display terminal capable of easily drawing a circle with a touch operation.SOLUTION: An image display terminal 100 includes: a touch detection unit 210 for receiving a touch operation and detecting coordinate values of a point where the touch operation is performed; a center identification unit 220 for identifying coordinate values of the point where a touch operation is performed as the center of a circle; a radius determination unit 230 for determining a radius of the circle including the center identified by the center identification unit 220, on the basis of two detected points; a numerical value calculation unit 240 for calculating information on the circle (such as the coordinate values of the center, a radius length and an arc length) on the basis of the coordinate values of the center identified by the center identification unit 220 and the radius identified by the radius determination unit 230; and a display unit 250 for displaying an arc or the circle and displaying information on the circle or arc (such as the radius length, an arc length and an angle). |
