JP2004341924A - Display device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform the operation of dragging an object within a three-dimensional space while using no additional device other than two-dimensional pointing devices such as a mouse. <P>SOLUTION: An image of an object dragged and dropped into a predetermined area in proximity to one of two opposite sides of a screen is moved in the normal direction with respect to one axis for which no dragging and dropping is to be carried out. An image of an object dragged and dropped into a predetermined area in proximity to the other of the two sides is moved in the negative direction with respect to the one axis for which no dragging and dropping is to be carried out. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is suitable for use in a three-dimensional GUI (Graphical User Interface) system. In particular, the present invention relates to a technique that allows a user to drag an object in a GUI to an arbitrary position using a two-dimensional pointing device such as a mouse.
[0002]
[Prior art]
Conventionally, there are many three-dimensional GUIs or three-dimensional applications as in Non-Patent Document 2. In such a system, various studies and inventions have been made on a method of designating a point in a three-dimensional space. Similar to the method described in Patent Document 1, there are many systems that realize pointing and operation in a three-dimensional GUI using only two-dimensional pointing using constraint conditions such as an application. As a solution in the case where three-dimensional pointing is required, a method using a dedicated pointing device as described in Patent Literature 2, Patent Literature 3, and Patent Literature 4 is known.
[0003]
However, such a method requiring a dedicated device has a problem in that the cost is increased and the user needs to master the usage. As a method realized by software, a method using two-step input is known as in Non-Patent Document 1, but it is different from human intuitive pointing in a three-dimensional space. was there. Also, a method of performing three-dimensional pointing step by step by preparing an additional tool in the software is to specify a coordinate axis as in Patent Literature 5, and to specify a two-dimensional plane defined by two unspecified coordinate axes. Many methods, such as a method of sequentially pointing a position at a location and a method of specifying a two-dimensional plane to be moved by key operation or the like, are used in many applications such as a three-dimensional CAD system.
[0004]
[Patent Document]
JP-A-10-333819
[Patent Document 2]
JP 2001-311058 A
[Patent Document 3]
JP-A-10-171591
[Patent Document 4]
JP-A-09-288541
[Patent Document 5]
JP-A-10-293864
[Non-patent document 1]
"Realization of UIMS based on 3D CG", Nobuo Asahi and three other authors, Information Processing Society of Japan, research report "Software Engineering" No. 093-014, 1993
[Non-patent document 2]
"Net space cruising technology InfoLead in the light age", Takashi Kawamura et al., 3 authors, NTTR & D Vol. 49 No. 10, 2000.
[0005]
[Problems to be solved by the invention]
The first problem is that the cost is increased by realizing three-dimensional pointing using a dedicated input device. The reason is that additional hardware is required.
[0006]
The second problem is that it is difficult for beginners to start using. The reason is that three-dimensional movement cannot be performed unless switching of the moving surface is performed by key input or the like which cannot be understood without referring to a manual or the like. Further, there is a case where this switching operation is not so simple as to be noticed while playing with the mouse.
[0007]
The present invention has been made in such a background, and provides a display device and a display method capable of dragging an object in a three-dimensional space without using an additional device other than a two-dimensional pointing device such as a mouse. The purpose is to provide. It is another object of the present invention to provide a display device and a display method which enable the above-described functions only with a two-dimensional pointing device without switching a two-dimensional moving surface by an additional operation such as a keyboard operation.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided means for displaying an image in a three-dimensional space on a screen, and forming an image of an object placed in the image in the three-dimensional space in response to an operation of a mouse pointer. And a means for dragging and dropping in two axis directions excluding one axis from three axes (X, Y, Z).
[0009]
Here, the feature of the present invention is that the screen is a quadrilateral, and the image of the object dragged and dropped into a predetermined area close to one of two opposite sides of the screen is the same as the image. For the image of the object dragged and dropped in a predetermined area close to the other of the two opposite sides, the means for dragging and dropping moves in the positive direction about the one axis excluded from the object of dragging and dropping. The means for dragging and dropping includes moving means for moving in a negative direction about the one axis excluded from the object of dragging and dropping (claim 1).
[0010]
That is, a two-dimensional pointing device such as a mouse can move an image of an object in an image in a three-dimensional space only in two axial directions. The present invention is characterized in that the movement in the remaining one axis direction is triggered by the drag and drop of the image of the moving object to a predetermined area provided at the side edge of the screen. Thus, the user can realize the movement in the remaining one axis direction simply by dragging and dropping the image of the object to be moved to the left or right or up and down of the screen.
[0011]
Further, the predetermined area includes an area extending from a side of the screen constituting the predetermined area to a position away from the side of the screen by a predetermined distance in the side direction, and the moving unit is dragged and dropped into the predetermined area. Means for varying a moving speed of the image of the object according to a positional relationship from a side of the screen constituting the predetermined region of the image of the object (claim 2).
[0012]
According to this, the user can arbitrarily change the moving speed. For example, when the image of the object is brought into contact with the side of the screen, the moving speed is set to be the fastest, and conversely, within the range of the predetermined area, the image of the object is farthest from the side of the screen. At this time, the moving speed is set to be the slowest. This allows the user to drag and drop the image of the object to a position where the moving speed desired by the user can be obtained.
[0013]
As the image of the object is moved by the dragging and dropping means on the one axis excluded from the drag and drop object by the moving means, the image of the object is constituted by two axes other than the one axis. Means may be provided for displaying an image of an auxiliary line for specifying the two-dimensional plane including the auxiliary line.
[0014]
According to this, since the user can easily grasp the positional relationship with the other two axes while moving the image of the object on one axis, for example, the image of the object goes too far from a desired position. Operational failure such as near-hand can be avoided.
[0015]
Further, it is possible to provide a means for clearly displaying an image of another object included in the two-dimensional plane (claim 4). According to this, since the user can visually grasp the positional relationship between the image of the object he is moving and the image of another object, for example, the image of the object goes too far from a desired position. Operation failure, such as a short or near side, can be avoided.
[0016]
According to a second aspect of the present invention, there is provided means for displaying an image in a three-dimensional space on a screen, and forming an image of an object placed in the image in the three-dimensional space according to an operation of a mouse pointer. And a means for dragging and dropping in two axis directions excluding one axis from three axes (X, Y, Z).
[0017]
Here, the feature of the present invention is that, by installing the information processing device in the information processing device, the screen has a quadrilateral shape, and a predetermined area close to one of two opposite sides of the screen. With respect to the image of the object dragged and dropped inside, the dragging and dropping means moves in a positive direction about the one axis excluded from the dragging and dropping, and moves the predetermined axis close to the other of the two opposite sides. For the image of the object dragged and dropped in the area of the above, the drag and drop means realizes a movement function of moving in a negative direction about the one axis excluded from the object of the drag and drop (claim). Item 5).
[0018]
Further, the predetermined area includes an area from a side of the screen constituting the predetermined area to a position away from the side of the screen by a predetermined distance in the opposite side direction, and is dragged and dropped into the predetermined area as the movement function. Further, a function of varying the moving speed of the image of the object according to the positional relationship from the side of the screen constituting the predetermined region of the image of the object can be realized.
[0019]
Further, as the means for dragging and dropping the image of the object by the moving function moves on the one axis excluded from the object of the drag and drop, the image of the object is constituted by two axes other than the one axis. It is also possible to realize a function of displaying an image of an auxiliary line for specifying a two-dimensional plane including an image (claim 7). Further, it is possible to realize a function of clearly displaying an image of another object included in the two-dimensional plane (claim 8).
[0020]
A third aspect of the present invention is a recording medium readable by the information processing device, on which the program of the present invention is recorded (claim 9). Since the program of the present invention is recorded on the recording medium of the present invention, the information processing apparatus can install the program of the present invention using the recording medium. Alternatively, the program of the present invention can be directly installed on the information processing apparatus from a server holding the program of the present invention via a network.
[0021]
Accordingly, a display device and a display method capable of dragging an object in a three-dimensional space using an information processing device such as a computer device without using an additional device other than a two-dimensional pointing device such as a mouse are realized. Can be. Further, it is possible to realize a display device and a display method in which the above function can be performed only by a two-dimensional pointing device without switching a two-dimensional moving surface by an additional operation such as a keyboard operation.
[0022]
According to a fourth aspect of the present invention, on a screen on which a three-dimensional space image is displayed, an image of an object placed in the three-dimensional space image is configured in a three-dimensional space according to an operation of a mouse pointer. This is a display method of dragging and dropping in each of two axes directions excluding one axis from three axes (X, Y, Z).
[0023]
Here, the feature of the present invention is that the screen is a quadrilateral, and the image of the object dragged and dropped into a predetermined area close to one of two opposite sides of the screen is dragged. The image of the object dragged and dropped in a predetermined area close to the other of the two opposing sides is moved in the positive direction with respect to the one axis excluded from the object of the drag & drop. The above one axis is moved in the negative direction (claim 10).
[0024]
The predetermined area includes an area extending from a side of the screen constituting the predetermined area to a position separated from the side of the screen by a predetermined distance in the opposite side direction, and the image of the object dragged and dropped into the predetermined area. The moving speed of the image of the object can be varied according to the positional relationship from the side of the screen constituting the predetermined area.
[0025]
Further, as the image of the object moves on the one axis which is excluded from the object of drag and drop, the image of the object is constituted by two axes other than the one axis, and specifies a two-dimensional plane including the image of the object. The image of the auxiliary line can be displayed (claim 12). Furthermore, the image of another object included in the two-dimensional plane can be specified (claim 13).
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
The configuration of the display device according to the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of the display device of the present embodiment. FIG. 2 is a block diagram of the Z-axis control unit of the present embodiment.
[0027]
In the present embodiment, as shown in FIG. 1, a display unit 1 that displays a three-dimensional space image on a screen of a display 10, and is placed in the three-dimensional space image in response to a mouse 5 pointer operation. X and Y axis control of the image moving unit 2 for dragging and dropping the image of the object in two axes (X, Y) directions excluding one axis from three axes (X, Y, Z) constituting a three-dimensional space And a display device including the unit 3.
[0028]
Here, a feature of the present embodiment is that the screen of the display 10 is a quadrilateral, and the image of the object dragged and dropped into a predetermined area close to one of two opposite sides of the screen. Is moved in the positive direction about the Z-axis, which is excluded from the drag-and-drop target by the X- and Y-axis control units 3, and the object dragged and dropped into a predetermined area close to the other of the two opposite sides. For the image, the X, Y axis control unit 3 is provided with a Z axis control unit 4 for moving the Z axis excluded from the drag and drop target in the negative direction (claims 1 and 10).
[0029]
In the present embodiment, a description will be given assuming that an image of an object on a two-dimensional plane by the X axis and the Y axis is dragged and dropped in accordance with the operation of the pointer of the mouse 5, but the combination of axes constituting the two-dimensional plane is It is not limited.
[0030]
Further, the predetermined area includes an area extending from the side of the screen constituting the predetermined area to a position separated from the side of the screen by a predetermined distance in the side direction, and the Z-axis control unit 4 drags and drags into the predetermined area. A moving speed control unit configured to change a moving speed of the image of the object in accordance with a positional relationship from a side of the screen configuring the predetermined region of the image of the dropped object (claims 2 and 11); .
[0031]
Further, as the image of the object moves on the Z axis by the Z axis control unit 4, a two-dimensional plane including two images (X, Y) other than the Z axis and including the image of the object is specified. And an auxiliary line control unit 7 for displaying an image of an auxiliary line for the display (claims 3 and 12). Further, the auxiliary line control unit 7 includes means for clearly displaying an image of another object included in the two-dimensional plane (claims 4 and 13).
[0032]
The present invention can be realized as a program that functions as the above-described display device by being installed in a general-purpose information processing device (claims 5 to 8). The program is recorded on a recording medium and installed in the information processing apparatus (Claim 9), or installed in the information processing apparatus via a communication line, so that the information processing apparatus is displayed on the display unit 1 and the video moving unit, respectively. 2 (X, Y axis control unit 3, Z axis control unit 4 (movement speed control unit 6, auxiliary line control unit 7)) without using additional devices other than a two-dimensional pointing device such as a mouse. A display device and a display method capable of dragging an object in a three-dimensional space can be realized. Further, it is possible to realize a display device and a display method in which the above function can be performed only by a two-dimensional pointing device without switching a two-dimensional moving surface by an additional operation such as a keyboard operation.
[0033]
Hereinafter, the present embodiment will be described in more detail. FIGS. 3, 6, and 7 are views showing drag and drop on a two-dimensional plane. 4 and 5 are views showing drag and drop in a three-dimensional space according to the present embodiment. FIG. 8 is a diagram showing the field weight. FIG. 9 is a diagram showing the radius of the cylindrical region of the present embodiment. FIG. 10 is a diagram showing an updraft / downdraft according to the present embodiment. FIG. 11 and FIG. 12 are views showing the mouse moving surface of the present embodiment. FIG. 13 is a diagram illustrating the projection plane extension unit. FIG. 14 is a flowchart showing the drag and drop operation of the present embodiment.
[0034]
Generally, an input by a mouse device is an input of a two-dimensional operation, and an additional mechanism or method is required to specify a three-dimensional position. When the mouse device has a large number of buttons, it is possible to easily realize a method of switching a mouse moving surface, which is a movable two-dimensional area in a three-dimensional space, by a mouse button by a mouse operation. However, there are situations where it is difficult to use this method, for example, when many operations are assigned to mouse buttons and there is no room. An object of the present invention is to realize drag and drop in a three-dimensional GUI using a mouse device even in such a situation. According to the method of the present invention, the buttons required for the mouse can be realized with only one button for dragging, and no additional hardware device is required.
[0035]
In the present invention, the vicinity of both ends of the camera projection plane in the three-dimensional GUI is used. In the field weight shown in FIG. 8, an object such as an icon is often not arranged near the both ends of the camera projection plane in a normal GUI except for a special use such as a game or a simulation. Thus, as shown in FIG. 10, a rising / lowering airflow (vertical movement) at a constant speed in this portion is introduced.
[0036]
When dragging an object such as an icon with a mouse in a three-dimensional GUI, the mouse moves on a plane (mouse moving plane) that passes through the dragged object and is parallel to a horizontal line according to the mouse operation as shown in FIGS. . It should be noted that there may be a plurality of types of mouse moving surfaces as described in the embodiments. When the dragged object reaches the side edge of the camera projection plane, it moves up / down at a preset speed. When the vehicle reaches the appropriate altitude and moves away from the side edge, the ascent / descent stops as shown in FIGS. 5 to 6 and 7, and movement is possible with a new mouse movement surface.
[0037]
Adjustment of the vertical position of the object depends on the timing of the movement of the object with the mouse, so it is difficult to make fine adjustments. It is not suitable for work that requires detailed position adjustment such as shape modeling and design, but ordinary GUI operation There is no particular problem in situations where some error is allowed, such as in drag and drop.
[0038]
In the drag-and-drop operation, it is sufficient if the vertical position can be aligned with the object to which the drop is performed. This is to display the grid of the mouse moving plane passing through the object being dragged as shown in FIGS. 5, it can be easily realized by performing the highlight display of the object hitting the grid surface in combination.
[0039]
The operation of moving the object up and down by the user consists of three steps (movement to both ends of the camera projection plane, up and down movement, movement from both ends of the camera projection plane). Except for the up and down movement, it is expected that the user's skill can shorten the time. . Since the vertical movement is a step in which the user's skill level is not reflected, the drag-and-drop operation time by the skilled person greatly depends on this step.
[0040]
The vertical movement speed is a trade-off between the accuracy required for vertical positioning and the vertical movement time, and the positioning accuracy depends on the type of application and the user's proficiency. It is difficult to determine the value. In order to cope with this, a speed difference between the up / down airflow depending on the field is introduced. That is, if the vehicle enters a certain distance on the mouse movement plane from both ends of the camera projection plane, it encounters an upward / downward airflow, and its speed increases in accordance with the distance from both ends of the camera projection plane. This allows the user to adjust the ascending / descending speed by adjusting the distance from both ends of the camera projection plane, and to maintain the accuracy of the up / down position adjustment while reducing the moving time when moving largely in the up / down direction. It can be shortened.
[0041]
Introducing the upward / downward airflow (vertical movement) near the both sides of the camera projection plane, which is the end of the user's field of view, enables two-dimensional movement by the mouse and another one-dimensional movement in the vertical direction. . At the same time, while moving up and down, the grid of the two-dimensional moving surface of the object to be dragged is displayed, and the droppable object that intersects the grid is highlighted to allow the user to recognize the movement of the moving surface, The vertical position with the drag destination can be compared so that the accuracy of the vertical movement can be sufficiently increased.
[0042]
It differs from the prior art in that no additional hardware device is required and that it can be moved in a three-dimensional space by a single drag operation.
[0043]
(First embodiment)
Set the mouse movement plane as follows when dragging starts. That is, as shown in FIG. 9, a plane that passes through two points of the camera and the drag object and is parallel to a horizontal line (the lower side of the camera projection plane) is defined as a two-dimensional movement plane by mouse operation. The vertical movement starts when an object enters a cylindrical area determined by the radius of the cylindrical area with both ends of the camera projection plane in FIG. 9 as axes.
[0044]
In this method, the calculation of the mouse movement plane is easy, and all objects in the field of view can be moved to all positions in the field of view, but the mouse movement plane viewed from the user's viewpoint becomes a straight line, Until then, there are some difficulties in user convenience.
[0045]
This two-dimensional movement implementation method simply embeds a code for moving the three-dimensional coordinates of the object being dragged into a callback routine called by a mouse movement event as shown in FIG. Specifically, each time a mouse movement event arrives, the intersection of the straight line connecting the viewpoint and the mouse pointer and the mouse movement plane is calculated, and the calculated three-dimensional coordinates of the object are set. When the mouse pointer enters a cylindrical area centered on the side end of the camera projection plane, the object is registered in a timer-activated routine (timer event). The routine started by the timer moves the three-dimensional coordinates of the registered object at a predetermined speed at regular intervals. At the same time, move the mouse pointer. When the mouse pointer escapes from the cylindrical area, the registration to the timer start routine is removed. Also, when the object is dropped, the registration of the object is removed. If the object is already in the cylindrical area at the time of starting dragging, registration is performed immediately at the time of starting dragging.
[0046]
For an object being dragged, data of another mesh-like object representing the plane on which the mouse is moved is defined and a grid is displayed. This grid display removes the data definition at the time of the drop and stops. The intersection between the plane of the grid display and another object is determined each time the timer routine is called based on the distance between the plane and the center of gravity of the object, and it is determined that the object that can be a drop target intersects the plane. Turns the highlight attribute on, otherwise turns it off.
[0047]
That is, as shown in FIG. 14, when an event occurs and the mouse button is pressed (step 1), the dragging of the foreground object overlapping the mouse cursor on the two-dimensional screen is started (step 5). When the mouse button is released (step 2), the drag ends (step 6). When the mouse is moved without releasing the mouse button (step 2) (step 3), the position of the mouse cursor is calculated and corrected (step 7). If dragging is still in progress, this process is repeated (step 8). If it is not dragging, the object position is calculated and corrected (step 9). When the mouse button is not released (step 2) and the mouse is not moved (step 3), if it is a timer event (step 4), the mouse cursor and the object position in the cylindrical area are calculated and corrected (step 10). ).
[0048]
(Second embodiment)
Parts other than the routine started by the timer can be realized by the same method as in the first embodiment. In the routine started by the timer, an ascending / descending airflow is introduced as in the cylindrical regions at both ends of the camera projection plane in FIG. That is, the distance between the center of gravity coordinates of the object and the center line of the cylindrical region is calculated, and the speed according to the distance is determined by linear interpolation so that the speed becomes 0 at the side of the cylinder and a relatively large speed set in advance at the center of the cylinder. Move up and down according to the determined speed.
[0049]
(Third embodiment)
In this embodiment, the mouse movement surface is a surface that passes through the object to be dragged and is parallel to the ground plane as shown in FIG. The basic implementation method is the same as the first and second embodiments. Since the mouse movement plane parallel to the ground plane can be seen from the user's viewpoint, even a novice user can easily and intuitively handle. However, for an object farther from the camera projection plane, it is necessary to once move the object out of the field of view of the camera in order to put the object in the cylindrical area. This method is applied to a GUI that handles such object drag and drop. Is difficult.
[0050]
(Fourth embodiment)
As shown in FIG. 12, in the embodiment, a landing point corresponding to the cameraman's foot is defined below the camera point with respect to the camera point, and a plane passing through the dragged object and the landing point and parallel to the horizontal line is defined as a mouse movement plane. is there.
[0051]
The basic implementation method is the same as in the first and second embodiments. As in the third embodiment, in order to put the object in the cylindrical area, there is a case where the object must be once dragged out of the visual field. However, even if the object's three-dimensional coordinates are outside the field of view, it will not be more than the distance defined by the landing point from the field weight, so if the virtual shadow of the object is dropped on the field of view, the position of the object can be easily estimated. It becomes.
[0052]
In addition, as shown in FIG. 13, if a mouse event in a range slightly wider than the camera projection plane (projection plane expansion unit) is captured, dragging outside the field of view can be continued. In this embodiment, it is difficult to drag an object located between the camera projection plane and the camera point (an object in which the weight from the field of view and the weight from the landing point do not overlap) to the cylindrical area. It is difficult to apply to a GUI that handles drag and drop.
[0053]
(Example summary)
In addition to the drag in the two-dimensional plane by the mouse device, it is possible to move the object in the three-dimensional space by moving the up / down airflow up and down by the metaphor. Also, this operation can be learned in a relatively short time by even a beginner. In addition, the grid display of the two-dimensional moving surface and the highlight effect of the object enable relatively beginners to easily perform the operation of dragging and dropping the object in the three-dimensional space to another object.
[0054]
【The invention's effect】
As described above, according to the present invention, an object can be dragged in a three-dimensional space without using an additional device other than a two-dimensional pointing device such as a mouse. Further, the above function can be performed only by the two-dimensional pointing device without switching the two-dimensional moving surface by an additional operation such as a keyboard operation.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a display device according to an embodiment.
FIG. 2 is a block diagram of a Z-axis control unit according to the embodiment.
FIG. 3 is a diagram showing drag and drop of a two-dimensional plane.
FIG. 4 is an exemplary view showing drag and drop in a three-dimensional space according to the embodiment;
FIG. 5 is a view showing drag and drop in a three-dimensional space according to the embodiment;
FIG. 6 is a diagram showing drag and drop of a two-dimensional plane.
FIG. 7 is a view showing drag and drop of a two-dimensional plane.
FIG. 8 is a diagram showing a field weight.
FIG. 9 is a diagram showing a radius of a cylindrical region according to the embodiment.
FIG. 10 is a diagram showing an ascending airflow / a descending airflow according to the embodiment.
FIG. 11 is a view showing a mouse moving surface according to the embodiment;
FIG. 12 is a view showing a mouse moving surface according to the embodiment;
FIG. 13 is a diagram showing a projection plane extension unit.
FIG. 14 is a flowchart showing a drag-and-drop operation according to the embodiment;
[Explanation of symbols]
1 Display
2 Video moving unit
3 X, Y axis control unit
4 Z axis controller
5 mice
6 Moving speed controller
7 Auxiliary line control unit
10 Display

Claims (13)

Means for displaying an image in a three-dimensional space on a screen;
In response to the operation of the mouse pointer, the image of the object placed in the image of the three-dimensional space is dragged and dragged in two axis directions except one axis from three axes (X, Y, Z) constituting the three-dimensional space. A display device comprising:
The screen is a quadrilateral, and for an image of the object dragged and dropped in a predetermined area near one of two opposite sides of the screen, the dragging and dropping means is excluded from the drag and drop object. The image of the object dragged and dropped in a predetermined area close to the other of the two opposing sides is moved in the positive direction about the one axis. A display device comprising moving means for moving the one axis excluded from the object in the negative direction. The predetermined area includes an area from a side of the screen constituting the predetermined area to a position separated by a predetermined distance in the side direction,
The moving unit changes a moving speed of the image of the object according to a positional relationship from a side of the screen constituting the predetermined region of the image of the object dragged and dropped into the predetermined region. The display device according to claim 1, further comprising: As the image of the object is moved by the dragging and dropping means on the one axis excluded from the object of the drag and drop by the moving means, the image of the object is constituted by two axes other than the one axis. 3. The display device according to claim 1, further comprising: means for displaying an image of an auxiliary line for specifying a two-dimensional plane including the auxiliary line. The display device according to claim 3, further comprising: a unit that explicitly displays an image of another object included in the two-dimensional plane. Means for displaying an image in a three-dimensional space on a screen;
In response to the operation of the mouse pointer, the image of the object placed in the image of the three-dimensional space is dragged and dragged in two axis directions except one axis from three axes (X, Y, Z) constituting the three-dimensional space. In a program applied to a display device having means for dropping,
By installing it on an information processing device,
The screen is a quadrilateral, and for an image of the object dragged and dropped in a predetermined area near one of two opposite sides of the screen, the dragging and dropping means is excluded from the drag and drop object. The image of the object dragged and dropped in a predetermined area close to the other of the two opposing sides is moved in the positive direction about the one axis. A program for realizing a movement function of moving the one axis excluded from the object in the negative direction. The predetermined area includes an area from a side of the screen constituting the predetermined area to a position separated by a predetermined distance in the side direction,
A function of changing a moving speed of the image of the object according to a positional relationship from a side of the screen constituting the predetermined region of the image of the object dragged and dropped into the predetermined region as the moving function The program according to claim 5, which realizes: With the moving function, the image of the object is configured by two axes other than the one axis as the means for dragging and dropping moves on the one axis excluded from the drag and drop. The program according to claim 5, which realizes a function of displaying an image of an auxiliary line for specifying a two-dimensional plane including the auxiliary line. The program according to claim 7, wherein the program realizes a function of clearly displaying an image of another object included in the two-dimensional plane. A recording medium readable by the information processing device, wherein the program according to claim 5 is recorded. On the screen on which the image of the three-dimensional space is displayed, the image of the object placed in the image of the three-dimensional space according to the operation of the mouse pointer is converted into three axes (X, Y, Z) constituting the three-dimensional space. In the display method of dragging and dropping in two axes directions except one axis from,
The screen is a quadrilateral, and an image of the object dragged and dropped in a predetermined area near one of two opposite sides of the screen is positive with respect to the one axis which is excluded from the drag and drop. Moving the image in the direction, and moving the image of the object dragged and dropped into a predetermined area close to the other of the two opposite sides in the negative direction with respect to the one axis excluded from the drag and drop target. The display method characterized by the above. The predetermined area includes an area from a side of the screen constituting the predetermined area to a position separated by a predetermined distance in the side direction,
The display according to claim 10, wherein a moving speed of the image of the object dragged and dropped in the predetermined region is changed according to a positional relationship from a side of the screen that forms the predetermined region of the image of the object dragged and dropped. Method. As the image of the object moves on the one axis, which is excluded from the object of drag and drop, an auxiliary line configured by two axes other than the one axis and specifying a two-dimensional plane including the image of the object The display method according to claim 10, wherein the image is displayed. 13. The display method according to claim 12, wherein an image of another object included in the two-dimensional plane is specified.

Images