Three-dimensional data display device, three-dimensional data display method, and program

1. A three-dimensional data display device comprising:

a rendering unit which is configured to obtain two-dimensional data by rendering three-dimensional data on the basis of a viewpoint;

an identification unit which is configured to identify a point of interest which is a point designated by a user of points in the three-dimensional data;

a viewpoint control unit which is configured to move the viewpoint along an annular movement route surrounding the point of interest with a sight line directed toward the point of interest; and

a route setting unit which is configured to receive an input of the geometric parameter settings of the movement route,

wherein the route setting unit determines an extending direction of a rotation axis of the movement route, and sets a straight line extending in the determined direction passing through the point of interest, as the rotation axis, and

wherein the rendering unit is configured to render a solid figure which represents the movement route and the three-dimensional data when the route setting unit is configured to receive the input of the geometric parameter settings.

2. The three-dimensional data display device according to claim 1 ,

wherein the solid figure has a shape different from the movement route.

3. The three-dimensional data display device according to claim 1 , further comprising:

a viewpoint recording unit which is configured to record a position of the viewpoint and a sight line direction at the time at which the point of interest is identified by the identification unit in a viewpoint storage unit;

wherein the viewpoint control unit is configured to change a position of the viewpoint and a sight line direction to the position and the sight line direction stored by the viewpoint storage unit after a movement of the viewpoint along the movement route ends.

4. The three-dimensional data display device according to claim 1 , further comprising:

a point of interest input unit which is configured to receive a selection of a point in the three-dimensional data obtained by the rendering unit,

wherein the identification unit is configured to identify a point on a half line which corresponds to the selected point in the three-dimensional data and is closest to the viewpoint as the point of interest.

5. The three-dimensional data display device according to claim 1 ,

wherein the rendering unit is configured to render a vertical direction of the two-dimensional data to coincide with a vertical direction of the three-dimensional data.

6. The three-dimensional data display device according to claim 1 ,

wherein the movement route is in an annular shape centered on the point of interest.

7. The three-dimensional data display device according to claim 1 , further comprising:

a viewpoint operation unit which is configured to receive an operation input of the viewpoint,

wherein the viewpoint control unit moves the viewpoint according to the input when the viewpoint operation unit is configured to receive the input during a movement of the viewpoint along the movement route.

8. A method of displaying three-dimensional data comprising:

obtaining two-dimensional data by rendering three-dimensional data on the basis of a viewpoint;

identifying a point of interest which is a point designated by a user of points in the three-dimensional data;

moving the viewpoint along an annular movement route surrounding the point of interest with a sight line directed toward the point of interest;

receiving an input of the geometric parameter settings of the movement route;

determining an extending direction of a rotation axis of the movement route;

setting a straight line extending in the determined direction passing through the point of interest, as the rotation axis; and

rendering a solid figure which represents the movement route and the three-dimensional data when receiving the input of the geometric parameter settings.

9. A non-transitory computer-readable computer medium storing a program which causes a computer to execute functions, the functions comprising:

obtaining two-dimensional data by rendering three-dimensional data on the basis of a viewpoint;

identifying a point of interest which is a point designated by a user of points in the three-dimensional data;

moving the viewpoint along an annular movement route surrounding the point of interest with a sight line directed toward the point of interest;

receiving an input of the geometric parameter settings of the movement route;

determining an extending direction of a rotation axis of the movement route; and

setting a straight line extending in the determined direction passing through the point of interest, as the rotation axis; and

rendering a solid figure which represents the movement route and the three-dimensional data when receiving the input of the geometric parameter settings.