JP3306264B2 - Drawing apparatus and drawing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the display of images such as animations, and more particularly to the change of the display mode.

[0002]

2. Description of the Related Art FIG. 12 shows a screen for setting a viewpoint and a line of sight in a conventional animation drawing apparatus. First,
The viewpoint position at the start of the animation is designated by inputting three-dimensional coordinates. The viewpoint position A at the start is displayed on the viewpoint / viewing line setting screen of FIG. 12A in response to this input. Next, the gaze direction is input using a mouse or a keyboard. On the screen, the corresponding gaze direction α at the start
Is displayed as an arrow.

After the viewpoint and the line of sight at the start of the animation are set as described above, the viewpoint and the line of sight at the end of the animation are set. This setting is similarly performed. The viewpoint position C and the line-of-sight direction γ at the end are displayed on the viewpoint / viewing line setting screen in FIG. 12A.

Next, a time table is set so that the viewpoint position A input as described above is the position at the start of the animation, and the viewpoint position C is the position at the end of the animation. The time table setting screen shown in FIG. 12B is used for setting the time table. On this screen, the numbers 0 to 10 lined up above indicate the time (drawing time) (seconds) from the start of the animation. First, “A” is input at the position of the drawing time 0 to set the viewpoint position A as the start time.
Next, “C” is input at the position of the drawing time 8 in order to set the viewpoint position C to the end time (here, 8 seconds later).

When an animation is executed with the above settings, a screen is displayed as shown in FIGS. 13A, 13B and 13C. That is, based on the setting of the viewpoint and the line of sight at the start and end, the smooth display is performed by complementing the viewpoint and the line of sight from the start to the end. This makes it possible to display as if the user were traveling on a road.

[0006] As shown in FIG. 14, if the settings are made not only at the start and end times but also at the intermediate time point, it is possible to obtain the settings shown in FIG.
More complicated display as shown in A to F of FIG.

[0007]

However, the conventional drawing apparatus as described above has the following problems. In order to change the animation display, the viewpoint, gaze, and timetable settings had to be changed. That is, the setting has to be performed while predicting how the animation will be executed by the setting. Therefore, in order to obtain a desired animation execution state, the setting change and the animation execution must be repeated many times, which is complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a drawing apparatus and a drawing method which can be easily set and changed.

[0009]

According to a first aspect of the present invention, there is provided a drawing apparatus.
A viewpoint position output unit that outputs a predetermined viewpoint position based on the drawing time, a line-of-sight direction output unit that outputs a predetermined line-of-sight direction based on the drawing time, and a viewpoint position from the viewpoint position output unit And drawing data calculation means for calculating drawing data based on the gaze direction from the gaze direction output means, wherein the gaze control input means for inputting control data for the gaze direction is provided, The direction output means outputs the line-of-sight direction in consideration of the control data of the line-of-sight direction input from the line-of-sight control input means.

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the line-of-sight direction is changed in real time.

According to a second aspect of the present invention, there is provided the drawing apparatus, further comprising viewpoint control input means for inputting control data for the viewpoint position.
The viewpoint position output means outputs the viewpoint position in consideration of the control data of the viewpoint position input from the viewpoint control input means.

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the viewpoint position is changed in real time.

According to a third aspect of the present invention, in the drawing apparatus of the first aspect, viewpoint control input means for inputting control data for the viewpoint position is provided, and the viewpoint position output means is input from the viewpoint control input means. It is characterized in that the viewpoint position is output in consideration of the control data of the viewpoint position.

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the line-of-sight direction and the viewpoint position are changed in real time.

According to a fourth aspect of the present invention, there is provided the drawing apparatus, wherein time control input means for inputting control data for drawing time is provided, and at least one of the viewpoint position output means and the line-of-sight direction output means is inputted from the time control input means. The viewpoint position or the line-of-sight direction is output in consideration of the control data of the drawn time.

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the progress of the drawing time is changed in real time.

According to a sixth aspect of the present invention, there is provided the drawing apparatus.
The drawing apparatus of 3, 4, or 5 is characterized in that each control data and a drawing time at which the control data is input are stored.

Therefore, it is possible to change the drawing mode in real time and to make settings based on the contents of the change.

According to a seventh aspect of the present invention, there is provided the drawing apparatus.
The drawing apparatus of 3, 4, or 5 is characterized in that a viewpoint position, a gaze direction, and a drawing time corrected as a result of inputting each control data are stored.

Therefore, it is possible to change the drawing mode in real time and to make settings based on the changed contents.

According to another aspect of the present invention, there is provided a drawing apparatus for drawing on a display screen by changing at least one of a viewpoint position and a line-of-sight direction based on a drawing time. An indicator for displaying the control mode of the position or the line-of-sight direction is displayed on the display screen.

Therefore, the control mode based on the input control data can be easily confirmed.

According to a ninth aspect of the present invention, in the drawing apparatus of the eighth aspect, the indicator is a part of a means for inputting control data of a viewpoint position or a viewing direction.

Accordingly, the input can be performed while confirming the control mode based on the control data.

According to a tenth aspect of the present invention, there is provided the drawing apparatus, wherein an indicator for displaying a control mode of a drawing time dynamically controlled during the drawing is displayed on the display screen.

Therefore, it is possible to easily confirm the control mode of the drawing time by the input control data.

[0027] According to an eleventh aspect of the present invention, in the drawing apparatus of the tenth aspect, the indicator is a part of a means for inputting control data of a drawing time.

Therefore, the input can be performed while confirming the control mode based on the control data.

According to a twelfth aspect of the present invention, a predetermined viewpoint position and a predetermined line-of-sight direction are determined based on the drawing time, and the drawing data is calculated based on the determined viewpoint position and the line-of-sight direction. In the drawing method, the control data for the line-of-sight direction is input during the drawing, and the line-of-sight direction is determined in consideration of the input control data for the line-of-sight direction. .

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the line-of-sight direction is changed in real time.

According to a thirteenth aspect of the present invention, during the drawing, the control data for the viewpoint position is input, and the viewpoint position is determined in consideration of the control data of the input viewpoint position. And

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the viewpoint position is changed in real time.

According to a fourteenth aspect of the present invention, there is provided the drawing method according to the twelfth aspect, wherein control data for the viewpoint position is input during the drawing, and the viewpoint position is also determined in consideration of the control data for the input viewpoint position. It is characterized in that it is determined.

Therefore, by inputting control data at the time of drawing, it is possible to perform drawing in which the line-of-sight direction and the viewpoint position are changed in real time.

According to a fifteenth aspect of the present invention, during the drawing, the control data for the drawing time is input, and the viewpoint position or the line-of-sight direction is determined in consideration of the control data for the input drawing time. It is characterized by:

Therefore, by inputting the control data at the time of drawing, it is possible to perform drawing in which the progress of the drawing time is changed in real time.

A drawing method according to claim 16, wherein at least one of the viewpoint position and the line-of-sight direction is changed based on the drawing time, and the drawing is performed on the display screen. An indicator for displaying the control mode of the position or the line-of-sight direction is displayed on the display screen.

Therefore, the control mode based on the input control data can be easily confirmed.

A drawing method according to claim 17, wherein at least one of the viewpoint position and the line-of-sight direction is changed on the display screen based on the drawing time, wherein the drawing is dynamically controlled during the drawing. An indicator for displaying a time control mode is displayed on the display screen.

Therefore, it is possible to easily confirm the control mode of the drawing time by the input control data.

The storage medium according to claim 18 is the storage medium according to claims 1 to 17
A program for realizing any one of the devices or methods by a computer is stored. Therefore, these devices and methods can be easily realized.

[0042]

FIG. 1 shows the overall configuration of a drawing apparatus according to an embodiment of the present invention. The viewpoint control input means 2
This is a means for inputting control data for the viewpoint.
The line-of-sight control input unit 8 is a unit for inputting control data for the line of sight. The time table storage unit 4 stores the relationship between the drawing time, the viewpoint, and the line of sight. The drawing time output means 6 is a means for outputting a time (drawing time) from the start of the animation. The viewpoint position output means 10 receives an output from the time table storage means 4 and the drawing time output means 6 and outputs a viewpoint position at the drawing time. Similarly, the line-of-sight direction output unit 12 receives the output from the time table storage unit 4 and the drawing time output unit 6 and outputs the line-of-sight direction at the drawing time.

In this embodiment, the drawing data calculating means 14 comprises a viewpoint position correcting means 16, a calculating means 18, and a line-of-sight direction correcting means 20. The viewpoint position correcting unit 16 is a unit that corrects the viewpoint position from the viewpoint position output unit 10 based on the control data from the viewpoint control input unit 2. The line-of-sight direction correcting unit 20 is a unit for correcting the line-of-sight direction from the line-of-sight direction output unit 12 based on the control data from the line-of-sight control input unit 8. The calculating means 18 calculates drawing data based on the viewpoint position output from the viewpoint position correcting means 16 and the line-of-sight direction output from the line-of-sight direction correcting means 20. The calculating means 18 calculates drawing data viewed from a given viewpoint position and viewing direction based on the three-dimensional data of the drawing target.

In this drawing apparatus, the viewpoint control data and the line-of-sight control data are input from the viewpoint control input device 2 and the line-of-sight control input means 8 during the drawing, respectively, thereby changing the viewpoint and the line of sight in real time. It can be performed.

FIG. 2 shows a hardware configuration in which each function of FIG. 1 is realized by using a CPU. Bus line 36
Includes a CPU 24, a memory 22, a hard disk 26,
CRP28, floppy disk drive (FDD) 3
A 0, 6-axis mouse 32 and a keyboard 34 are connected. The program for performing drawing is on the hard disk 2
6 is stored. It is to be noted that this program is generally used by installing a program stored on a floppy disk via the floppy disk drive 30 on the hard disk 26. Further, a program recorded on a recording medium other than the floppy disk, for example, a CD-ROM or the like may be installed.

Hereinafter, the case where the animation is set as shown in FIG. 12 and the change is made in real time during drawing as shown in FIG. 14 will be described.
FIG. 4 shows a time table when the settings as shown in FIG. 12 are made. The time table of FIG. 4 is recorded and held in the hard disk 26 of FIG. In this time table, the drawing time 0, that is, the viewpoints Pax, Pay, Paz and the lines of sight θa, φa at the start are stored. Similarly, at the end of the animation, here, the viewpoints Pfx, Pfy, Pfz and the direction of the line of sight after 8 seconds have passed, θ
f and φf are stored. Here, Pax, Pay, and Paz represent the positions of the x, y, and z coordinates in the three-dimensional coordinate space, respectively. The line of sight θa represents the angle between the line of sight and the yz plane.
Indicates the angle between the line of sight and the xy plane (see FIG. 11A).

FIG. 3 shows a flowchart of a program for drawing stored in the hard disk 26.
Hereinafter, the drawing operation will be described with reference to this flowchart. It is assumed that the three-dimensional data of the drawing target is recorded in the hard disk 26 in advance.

First, when an animation start command is given from the keyboard 34 or the six-axis mouse 32, the drawing time T is initialized (T = 0) (step S1). Next, the CPU 24 obtains the initial time Tn from a clock provided therein and records it in the memory 22 (step S
2). In step S3, the time To previously drawn is initialized as an initial time Tn, and stored in the memory 22.
Next, an elapsed time Tk from the previous drawing time To to the current drawing time Tn is calculated (step S4). here,
Since the previous drawing time To and the current time Tn are the same, the elapsed time Tk becomes zero.

Next, the current drawing time T is calculated by adding the calculated elapsed time Tk to the previous drawing time T (step S5). Here, the drawing time T is 0, and the elapsed time from the previous drawing is 0, so the current drawing time T is 0. At this point, the current time Tn is assigned to the previous drawing time To.

Next, the viewpoint at the current drawing time, Pt,
x, Pty, Ptz and the line of sight θt, φt are obtained based on the time table of FIG. 4 (step S6). Here, since the current drawing time T is 0, the values of the viewpoint and the line of sight corresponding to the drawing time 0 in the time table of FIG. 4 are obtained as the current viewpoint and the line of sight.

Next, a six-axis mouse 32 serving as control input means
, That is, the control data is obtained (step S7). The viewpoint and the line of sight are corrected based on the input values (step S8). The correction of the viewpoint and the line of sight will be described later in detail. When the corrected viewpoint and line of sight are obtained in this way, the CPU 24 applies the obtained viewpoint and line of sight to the three-dimensional data of the drawing target stored in the hard disk 26 to form drawing data. I do. Thereafter, this is drawn on the CRT 28 (step S9). FIG. 5 shows the drawing on the CRT 28 in this initial state.

When the drawing at the start is completed in this way, the current time T is obtained in step S10. Next, the process returns to step S4, and a new elapsed time Tk is calculated. Further, a new drawing time T is calculated (step S5). Based on the drawing time T, the viewpoint and the line of sight are calculated by interpolating from the time table. That is, the following equation is calculated.

Ptx = (Pax · (Tf−T) + Pfx · (T−Ta)) / (Tf−Ta) Pty = (Pay · (Tf−T) + Pfy · (T−Ta)) / (Tf−Ta) ) Ptz = (Paz · (Tf−T) + Pfz · (T−Ta)) / (Tf−Ta) θt = (θa · (Tf−T) + θf · (T−Ta)) / (Tf−Ta) φt = (Φa · (Tf−T) + φf · (T−Ta)) / (Tf−Ta) Hereinafter, the drawing is performed in the same manner. In this way, the animation is displayed on the screen as time passes.

In order to obtain an animation image as shown in FIG. 15, the line of sight must be changed to the left when the animation has progressed to the screen shown in FIG. 6A. In this embodiment, the control data relating to the change of the line of sight is input by twisting the six-axis mouse 32 to the left. At this time, as shown in FIG. 6A, an indicator indicating what control data has been input as change data with respect to a predetermined basic line of sight is displayed at the lower right of the screen.

The details of the indicator 50 are shown in FIG. In FIG. 7, a right end area 52 is a portion for indicating a line of sight, and a point 44 indicates a direction of a predetermined basic line of sight. The central area 54 is
This is an area for indicating the height of the position of the viewpoint. A point 42 indicates the height of the viewpoint serving as a predetermined reference. The leftmost area 56 is for indicating the position of the viewpoint on the XY plane, and the point 40 indicates the position of the viewpoint serving as a predetermined reference.

For example, if the direction of the line of sight is changed by 90 degrees to the left from the reference line of sight by the six-axis mouse 32, the display moves to the position indicated by the point 46. This allows
It is easy to confirm the change in the line of sight.

The CPU 24 that has obtained the control input data in step S5 corrects the viewpoint or the line of sight based on the control data (step S6). Here, since the correction data of the line-of-sight direction is input, the correction for the line-of-sight direction is performed. The CPU 24 corrects the line-of-sight direction based on the following equation.

Θ′t = θt + Δθt φ′t = φt + Δφt Here, Δθt and Δφt are correction data based on the output from the six-axis mouse 32. As described above, the correction is performed by adding Δθt and Δφt input from the six-axis mouse to the basic line-of-sight direction. This relationship is shown in FIG. 11B. This figure shows a state in which three-dimensional coordinates are redefined with the basic line-of-sight direction as the Y 'axis, and a new line-of-sight direction is determined by Δθ and Δφ in this space.

Similarly, the correction for the viewpoint is performed by the following equation.

P′tx = Ptx + ΔPtx P′ty = Pty + ΔPty P′tz = Ptz + ΔPtz Here, ΔPtx, ΔPty, and ΔPtz are correction data based on the output from the six-axis mouse 32. That is, the coordinates of the corrected viewpoint are calculated by adding Δx, Δy, and Δz input from the six-axis mouse to the basic x, y, and z coordinates, respectively.

The calculation and drawing of the drawing data are performed based on the corrected viewpoint and line of sight (step S7). Accordingly, the drawing of the animation being executed is changed from the state of FIG. 6A to the state of FIG. 6B. In order to further change this drawing state to e to f in FIG. 15, the line of sight is returned to the right side using a six-axis mouse, and finally to the position of the point 44. Good.

As described above, a desired animation image can be obtained by dynamically changing the line of sight or viewpoint during the execution of an animation without changing the set values.
In particular, since this operation can be performed while the animation is running,
The effect of the change can be immediately recognized, and the change operation or the setting operation becomes easy.

For example, the present invention is effective in a case where a presentation is performed at an exhibition or the like by changing the viewpoint and the line of sight in real time at the request of a visitor. In other words, unlike the related art, it is possible to not only show a preset animation, but also to perform a flexible display according to a visitor's request.

In the conventional walk-through system, the user can move freely in the virtual space by the operation of the operator, but has too high a degree of freedom and may move in an unexpected direction. According to the present invention, an effective presentation can be performed if the viewpoint position and the line-of-sight direction are set in advance and the operator can control only the line-of-sight direction.

If the control data for correction and the drawing time at which the control data are input are stored, the control data can be reproduced. In other words, it is possible to roughly configure the settings of the animation screen by using a time table and make fine adjustments while viewing the execution screen.

In the above embodiment, both the viewpoint and the line of sight are changed, but only one of them may be changed.

In this embodiment, a six-axis mouse is used as the viewpoint control input means and the eye control input means.
A dimensional position measuring device or the like may be used. It is also possible to use a normal mouse. In this case, the input of the viewpoint, the line of sight and the like may be switched by combining a mouse button and a keyboard.

Further, point 4 on the indicator shown in FIG.
By dragging 0, 42, 44, and the like with a mouse, the device can be used as an input device.

In the above apparatus, it is also possible to ignore the data of the viewpoint position and the line-of-sight direction determined by the time table and the current time, and to perform the animation display only by the input from the viewpoint and the six-axis mouse 32.

On the contrary, it is also possible to completely ignore the input from the six-axis mouse 32 and to perform the display according to a predetermined time table (the same as the conventional one). Switching between these modes may be performed, for example, by switching a flag or the like.

FIG. 8 shows the overall configuration of a drawing apparatus according to another embodiment of the present invention. In this embodiment, the output from the drawing time output means 6 is not provided to the direct line-of-sight direction output means 12 and the viewpoint position output means 10 but to the drawing time correction means 9. . The drawing time correction means 9 is connected to the time control input means 7 for inputting control data for time control. Therefore, the drawing time correction means 9 is provided by the drawing time output means 6
Is corrected and output in accordance with the control data input from the time control input means 7.

By adopting such a configuration, it is possible to perform operations such as delaying the passage of time, fast-forwarding, stopping, reversing, and skipping time instantaneously in real time. Become.

The hardware for realizing the function of FIG. 8 is the same as that of FIG. The drawing program includes steps S41 to S44 for correcting the elapsed time as shown in FIG. That is, in step S41, a control input value related to the time input from the mouse 32 or the keyboard 34 is obtained,
The elapsed time is corrected based on the obtained control data (steps S42, S43, S44).
For example, when the control data for fast-forwarding the time (at double speed) is input, the elapsed time Tk is corrected as in the following equation (step S42).

Tk = 2 · Tk When the control data of the time stop is input, 0 is set as the elapsed time Tk.

The elapsed time Tk corrected as described above
Is calculated on the basis of (step S5).
Therefore, as a result, the drawing time T is corrected. In this embodiment, the drawing time T is indirectly corrected by correcting the elapsed time Tk.
The drawing time T may be directly corrected.

FIG. 9 shows a screen display of an indicator 70 for inputting time control data. By operating the indicator 70 with a mouse or the like, desired control data can be input. For example, when 60 is clicked with a mouse, a time rewind operation is performed. When 62 is clicked on with a mouse, the elapsed time is stopped. Clicking on the button 64 realizes a state in which the normal speed elapses, that is, the elapsed time is not corrected. When 66 is clicked, a fast forward operation of time is performed. In the indicator 70, the user can tell which button is selected by changing the color of the selected button. CPU 24
Performs drawing based on the elapsed time thus corrected.

Therefore, it is possible to change the lapse of time in real time during the execution of the animation. For example, it is possible to execute an animation such as stopping and looking around.

In each of the above embodiments, FIGS.
Are realized by a CPU and a program, but a part or all of them may be configured by hardware logic.

Further, in the above-described embodiment, the three-dimensional display is described. However, the present invention can be applied to one-dimensional, two-dimensional display, and the like.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a drawing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a hardware configuration when each function of FIG. 1 appears using a CPU.

FIG. 3 is a diagram showing a flowchart of a drawing program.

FIG. 4 is a diagram illustrating an example of a time table.

FIG. 5 is a diagram showing a screen display at the time of starting an animation.

FIG. 6 is a diagram illustrating a screen in which animation is in progress.

FIG. 7 is a diagram showing details of an indicator.

FIG. 8 is a diagram showing an overall configuration of a drawing apparatus according to another embodiment of the present invention.

9 is a diagram showing a display state of an indicator 70 in the embodiment of FIG.

FIG. 10 is a diagram showing a flowchart of a drawing program of the apparatus in FIG. 8;

FIG. 11 is a diagram showing a definition of a line-of-sight direction and a change thereof.

FIG. 12 is a diagram illustrating settings of a drawing apparatus.

FIG. 13 is a diagram illustrating an execution state of a drawn animation according to the settings in FIG. 12;

FIG. 14 is a diagram showing setting of animation in a conventional drawing device.

FIG. 15 is a diagram illustrating an execution state of an animation when the setting in FIG. 14 is performed.

[Explanation of symbols]

 2 viewpoint control input means 4 time table storage means 6 drawing time output means 7 time control input means 8 visual axis control input means 9 drawing time correction means 10 ..View point position output means 12 ... Gaze direction output means 14 ... Drawing data calculation means 16 ... View point position correction means 18 ... Calculation means 20 ... Gaze direction correction means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-274577 (JP, A) JP-A-63-192167 (JP, A) JP-A-2-199579 (JP, A) JP-A-2- 199580 (JP, A) JP-A-6-96187 (JP, A) JP-A-7-116343 (JP, A) JP-A-63-118985 (JP, A) JP-A-1-241679 (JP, A) JP-A-3-296871 (JP, A) JP-A-5-165922 (JP, A) Miyuki Ohshige, MACROMEDIA D IRECTOR 4.0 TECHNICAL MANUAL Animation Technic, Japan, Mizuki Corporation, February 25, 1995 , 13-23 Apple Computer Inc. , INSIDE MACINTOS H: QuickTime (Japanese version), Apple Technical Library, Apple Computer Inc. , October 25, 1993 (58) Fields investigated (Int.Cl. ⁷ , DB name) G06T 15/70 G06T 17/40 G06T 13/00 G06F 17/50 610 G06F 17/50 634 G06F 17/50 680 G01C 21/00 Patent file (PATOLIS) JICST file (JOIS)

Claims (12)

(57) [Claims] A viewpoint position output means for outputting a predetermined viewpoint position based on a drawing time; a gaze direction output means for outputting a predetermined gaze direction based on the drawing time; Drawing data calculation means for calculating drawing data based on the viewpoint position and the gaze direction from the gaze direction output means, wherein a gaze control input means for inputting control data for the gaze direction is provided; The gaze direction output means outputs the gaze direction in consideration of the control data of the gaze direction input from the gaze control input means. A viewpoint position output means for outputting a predetermined viewpoint position based on the drawing time; a gaze direction output means for outputting a predetermined gaze direction based on the drawing time; Drawing data calculation means for calculating drawing data based on the viewpoint position and the gaze direction from the gaze direction output means, wherein a viewpoint control input means for inputting control data for the viewpoint position is provided, The viewpoint position output means outputs the viewpoint position in consideration of the control data of the viewpoint position input from the viewpoint control input means. 3. The drawing apparatus according to claim 1, further comprising: viewpoint control input means for inputting control data for the viewpoint position, wherein said viewpoint position output unit controls the viewpoint position control data input from the viewpoint control input unit. In addition to the above, the viewpoint position is output. 4. The drawing apparatus according to claim 1, further comprising: time control input means for inputting control data for a drawing time, wherein at least one of said viewpoint position output means and line-of-sight direction output means is a time A viewpoint position or a line-of-sight direction is output in consideration of drawing time control data input from the control input means. 5. The drawing apparatus according to claim 1 , wherein the control data and a drawing time at which the control data is input are stored. 6. The drawing apparatus according to claim 1 , wherein the viewpoint position, the line-of-sight direction, and the drawing time corrected as a result of inputting the control data are stored. Features. 7. A method according to claim 1 , wherein the predetermined time is determined according to the elapse of the drawing time.
Draw on the display screen based on the viewpoint position and gaze direction
In the drawing apparatus to perform, at least the predetermined viewpoint position or line-of-sight direction is determined.
The other is dynamically changed during the drawing and displayed on the display screen.
Performs drawing, and the viewpoint position or line-of-sight direction dynamically controlled during the drawing
The predetermined viewpoint position or line-of-sight direction
For displaying the change from the control mode
Data on the display screen.
What to do. 8. The drawing apparatus according to claim 7 , wherein said indicator is a part of a means for inputting control data of a viewpoint position or a line of sight. 9. A drawing method for determining a predetermined viewpoint position and a predetermined line-of-sight direction based on a drawing time, and calculating and drawing drawing data based on the determined viewpoint position and the line-of-sight direction. In the method, the control unit may input control data for the line-of-sight direction during the drawing, and determine the line-of-sight direction in consideration of the input control data for the line-of-sight direction. 10. A drawing method for determining a predetermined viewpoint position and a predetermined line-of-sight direction based on a drawing time, and calculating and drawing drawing data based on the determined viewpoint position and the line-of-sight direction. In the method, the control data for the viewpoint position is input during the drawing, and the viewpoint position is determined in consideration of the control data for the input viewpoint position. 11. The drawing method according to claim 10 , wherein control data for the viewpoint position is input during the drawing, and the viewpoint position is determined in consideration of the control data for the input viewpoint position. Characterized by that. 12. A method according to claim 1, further comprising the step of:
Draw on the display screen based on the viewpoint position and gaze direction
In the drawing method for performing, at least the predetermined viewpoint position or line-of-sight direction
The other is dynamically changed during the drawing and displayed on the display screen.
Performs drawing, and the viewpoint position or line-of-sight direction dynamically controlled during the drawing
The predetermined viewpoint position or line-of-sight direction
For displaying the change from the control mode
Data on the display screen.
What to do.