KR101707203B1 - Transforming method of computer graphic animation file by applying joint rotating value - Google Patents

Abstract

The present invention provides a method for converting a computer graphic animation file by applying a joint rotating value, which can simply and easily generate/edit a character animation. The method for converting a computer graphic animation file by applying a joint rotating value according to the present invention includes: a computer graphic program activating step; a reference character animation character generating step; a step of applying non-reference character animation file movement information to the reference character animation; and a reference character animation file generating step.

Description

[0001] The present invention relates to a computer graphics character animation file conversion method,

The present invention relates to a method of converting a computer graphic character animation file based on a joint rotation value application, and more specifically, a character animation file of various existing file formats can be used in a new character animation toolkit, Especially in computer graphics program, Character Animation Toolkit (CAT), a character animation toolkit for 3ds Max, BIP files of Biped, a tool for character animation before 3ds Max, And more particularly, to a method of converting a computer graphic character animation file based on a joint rotation value application, which enables a BVS file (BioVision Hierarchial data) as a motion capture file to be stably and smoothly transformed into a CAT character animation file without distortion.

The market size of the domestic game industry is continuously increasing, and various 3D games implemented through 3D characters are becoming popular due to expansion of the game industry and development of technology. Realistic and dynamic implementation of the shape and movement of 3D characters has a great impact on the public interest and commercial success of 3D games.

Here, as a technique for implementing a character in a 3D game, Korean Registered Patent Publication No. 10-0623173 entitled " Game Character Animation Implementation System, Implementation Method and Production Method ", Registration No. 10-0436816 entitled "3D Character Animation Quot ;, " Production Method and System ", Korean Patent Laid-Open Publication No. 10-2008-0018407 "Computer-Readable Recording Medium Recorded with Character Variation Program Providing Variation of 3-D Character ", Publication No. 10-2004-0087787, Avatar body transformation system for 3D online game ".

On the other hand, 3ds Max, one of the commercialized computer graphics programs, has recently introduced the CAT (Character Animation Toolkit), which was officially introduced as a character animation toolkit. CAT is a large part of the structure with Biped, different. FIG. 1 (a) shows the CAT Rig of the character generated in the CAT, and FIG. 1 (b) shows the joint of the character generated in the Biped. Here, CAT is not suitable for importing the BIP file (Biped file) and the BDH file (BioVision Hierarchial data) which are the actual motion capture files provided in 3ds Max. Therefore, when importing the BVH file, there is a problem that distortion occurs as shown in FIG. {Biped is applied without distortion as in FIG. 2 (b)}

(Patent Document 1) Korean Registration Patent Registration No. 10-0623173 "Game Character Animation Implementation System, Implementation Method and Production Method"

(Patent Document 2) Korean Registration Patent Registration No. 10-0436816 entitled "Method and System for Producing 3D Character Animation"

(Patent Document 3) Korean Patent Laid-Open Publication No. 10-2008-0018407 "A computer-readable recording medium recording a character transformation program that provides a transformation of a three-

(Patent Document 4) Korean Patent Laid-Open Publication No. 10-2004-0087787 entitled "Avatar-type body transformation system for 3D online game"

Accordingly, it is an object of the present invention to provide a novel character animation toolkit capable of easily creating and editing a character animation by allowing a character animation file of various existing file formats to be used as a reference, And a method of converting a computer graphic character animation file based on applying a new type of joint rotation value that can be performed.

In particular, the present invention relates to a novel type of BIP file or BVH file that can be stably and smoothly converted into a CAT character animation file without distortion by detecting a character joint rotation value of a BIP file or a BVH file and applying it to a CAT rig And to provide a method of converting a computer graphic character animation file based on the application of the joint rotation value.

According to an aspect of the present invention, there is provided a computer-readable recording medium storing a computer-readable program recorded on a computer-readable recording medium, A reference character animation character generation step in which a reference character animation toolkit 30 included in the computer graphic program 20 is activated and character joints for character modeling and character motion implementation are generated from the reference character animation toolkit 30; The character joint rotation value for implementing the character movement of the non-reference character animation file 1 activated through the computer graphics program 20 is detected and the non-reference character animation rotation speed value, which is matched with the character joint generated in the reference character animation toolkit 30, The character joint of the character animation file 1 is selected and the rotation value of the character joint of the selected non-reference character animation file 1 is compared with the reference character animation file motion information (non-reference character animation file information) applied to the character joint of the reference character animation toolkit 30. [ A reference character animation application step of; A reference character animation file generation step of generating a reference character animation file 2 in which the motion of the character joint of the reference character animation toolkit 30 is implemented by applying the character joint rotation value of the non-reference character animation file 1, And a computer graphics character animation file based on the application of the joint rotation value.

In the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, the character characterization step for the reference character animation includes a character animation toolkit (CAT), which is a character animation toolkit of a computer graphics program 3ds MAX (20 ' (30 ') is executed as the reference character animation toolkit 30, and then the CAT Rig corresponding to the setting of the character modeling and the set character modeling is generated by the user.

In the method of transforming a computer graphic character animation file based on the application of the joint rotation value according to the present invention, the step of applying the reference character animation of the non-reference character animation file motion information may be performed by using a character animation toolkit of Biped 40 ) Is temporarily generated; A BVH file import step in which an actual motion capture file (BioVision Hierarchial data) 1a is imported into the Biped 40; A character joint rotation value detection step of detecting a rotation value of each joint of the character according to a character movement of the BVH file (1a) imported into the biped (40); A character joint matching step of selecting a character joint of the BVH file (1a) matching the joint of the CAT Rig; A step of applying a character joint rotation value to which the rotation value of the character joint of the BVH file (1a) matching the CAT Rig joint is applied to the CAT Rig joint; The height of the CAT character is calculated and the character height of the BVH file 1a is adjusted to be equal to the height of the CAT character and then the position value of the root node of the character of the BVH file 1a is CAT And a character position motion applying step applied to the root node of the character.

In the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, in the character joint matching step, the arms and leg joints of the CAT Rig and the arms and leg joints of the BVH file (1a) character are matched one- A character arm-leg joint matching step; And a character center joint matching step in which a center joint of the CAT rig and a center joint of a BVH file (1a) character are matched, wherein the character center joint matching step comprises a center joint joint unit of a center joint comprising a plurality of joint units, Can be matched one-to-one.

In the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, the step of applying the character joint rotation value may include a step of applying a relative motion of an end joint unit based on a start joint unit of the character center joint of the BVH file (1a) And applying a character center-of-joint rotational value to cause the rotational value to be applied to an end point joint unit of the CAT rig center joint.

In the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, the step of applying the character joint rotation value may be performed by converting a leg joint of the CAT Rig into a motion implementation of a forward kinematics (FK) Applying the rotation value of the character's leg joint of the CAT Rig to the motion of the leg joint of the CAT Rig to return to the motion implementation of the IK (Inverse Kinematics) scheme; And applying the character's arm rotation value to apply the rotation value of the character's arm joint of the BVH file (1a) to the arm joint of the CAT Rig.

In the method of transforming a computer graphic character animation file based on the application of the joint rotation value according to the present invention, the step of applying the reference character animation of the non-reference character animation file motion information may be performed by using a character animation toolkit of Biped 40 ) Is temporarily generated; A BIP file import step in which a BIP file 1b, which is a file generated by the Biped 40, is imported into the Biped 40; A character joint rotation value detection step of detecting a rotation value of each joint of the character according to a character movement of the BIP file 1b imported into the biped 40; A character joint matching step of selecting a character joint of the BIP file (1b) matching the joint of the CAT Rig; A character joint rotation value application step in which the rotation value of the character joint of the BIP file (1b) matching the CAT Rig joint is applied to the CAT rig joint; The height of the CAT character is calculated and the character height of the BIP file 1b is adjusted to be equal to the height of the CAT character and then the position value of the root node of the character of the BIP file 1b is CAT And a character position motion applying step applied to the root node of the character.

According to the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, a character animation file of various existing file formats can be used in a new character animation toolkit as a reference, There is an effect that it is simple and easy to carry out. In particular, according to the method of transforming a computer graphic character animation file based on applying a joint rotation value according to the present invention, a character joint rotation value of a BIP file or a BVH file is detected and a BIP file or BVH file is transferred to a CAT Character animation file has stable and smooth conversion without distortion.

Brief Description of the Drawings Fig. 1 is a view showing a joint of a character generated in a CAT and a character generated in a biped;
FIG. 2 is a view for showing a result of importing a BVH file into CAT and Biped; FIG.
FIG. 3 is a sequence block diagram illustrating a method of transforming a computer graphic character animation file based on a joint rotation value application according to the present invention; FIG.
FIG. 4 is a block diagram illustrating a system configuration for performing a method of converting a computer graphic character animation file based on a joint rotation value application according to the present invention; FIG.
FIG. 5 is a sequence block diagram illustrating a step of applying a reference character animation of non-reference character animation file motion information according to an embodiment of the present invention applied to a BVH file; FIG.
FIG. 6 is a block diagram illustrating a system configuration for performing a method of converting a computer graphic character animation file based on a joint rotation value application according to an embodiment of the present invention; FIG.
Figure 7 is an illustration of CAT character joints and BVH character joints;
FIG. 8 is a sequence block diagram illustrating a step of matching a character joint and a step of applying a character joint rotation value according to an embodiment of the present invention; FIG.
FIG. 9 is an exemplary view illustrating a step of applying a character joint rotation value according to an embodiment of the present invention; FIG.
10 is an exemplary diagram illustrating a process of adjusting a character height and a root node in a character position movement application step according to an embodiment of the present invention;
11 is a sequence block diagram illustrating a step of applying a reference character animation of non-reference character animation file motion information according to an embodiment of the present invention applied to a BIP file.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings 3 to 11. Meanwhile, in the drawings and detailed description, it is assumed that a computer program is downloaded from general computer graphics, computer graphics program, 3ds MAX, computer graphic character, character animation toolkit, CAT (Character Animation Toolkit), Biped, BIP file, BVV file (BioVision Hierarchical data) The description and the illustration of the construction and operation that the workers can easily understand are simplified or omitted. In the drawings and specification, there are shown in the drawings and will not be described in detail, and only the technical features related to the present invention are shown or described only briefly. Respectively.

3, the computer graphic program activation step, the reference character animation character creation step, the non-reference character animation file motion information reference character animation application step , And a reference character animation file generation step. Here, the method of transforming a computer graphic character animation file based on the application of the joint rotation value according to the present invention can be applied to various game production tools, animation production tools, various 3D computer graphic programs, etc. In particular, Or BVH file is applied to the CAT Rig so that the BIP file or the BVH file can be effectively and stably converted into the CAT character animation file without distortion by applying the character joint rotation values of the BIP file or the BVH file to the CAT Rig But is not limited to this.

The step of activating the computer graphic program is a step of activating the computer graphic program 20 installed in the computer device 10 as shown in FIG. The 3ds MAX program is used as the computer graphics program 20 according to the embodiment of the present invention.

4, the reference character animation toolkit 30 included in the computer graphic program 20 is activated, and a character for modeling character movement and character movement from the reference character animation toolkit 30 This is the stage where joints are created. In the character characterizing step for the reference character animation according to the embodiment of the present invention, the CAT 30 ', which is the character animation toolkit of the computer graphics program 3ds MAX 20', is executed as the reference character animation toolkit 30, And a CAT Rig corresponding to the set character modeling are generated by the user.

In the reference character animation applying step of the non-reference character animation file motion information, a character joint rotation value for implementing the character movement of the non-reference character animation file 1 activated through the computer graphic program 20 is detected, The character joint of the non-reference character animation file 1 matched with the character joint generated in the toolkit 30 is selected and the rotation value of the character joint of the selected non-reference character animation file 1 is input to the reference character animation toolkit 30 ) Is a step applied to the character joint.

Here, the reference character animation application of the non-reference character animation file motion information according to the embodiment of the present invention applied to the BVH file may include a Biped temporary creation step, a BVH file import step, a character joint rotation value detection step, A joint matching step, a character joint rotation value application step, and a character position movement application step.

6, the Biped 40, which is a character animation toolkit of the 3ds MAX 20 ', is temporarily created, and the BVH file importing step is a step in which the BVH file 1a, which is an actual motion capture file, (Step 40). The temporarily generated Biped 40 is deleted after completing the reference character animation application step of the non-reference character animation file motion information according to the embodiment of the present invention.

The step of detecting the joint rotation value of the character is a step of detecting the rotation value of each joint of the character according to the movement of the character of the BVH file 1a imported into the biped 40.

The character joint matching step is a stage in which the character joint of the BVH file 1a matching with the joint of the CAT Rig is selected. The joint of the basic generated character of the biped 40 is shown in Fig. 7 (a), which is a character of the BVH file 1a imported into the biped 40 shown in Figs. 7 (b) The difference between the joints can be confirmed. The BVH file (1a) has a different length and number of joints for each motion capture maker. Accordingly, the character joint of the BVH file (1a) matching with the joint of the CAT rig is selected through the character joint matching step.

Here, the character joint matching step according to the embodiment of the present invention is divided into a character arm-leg joint matching step and a character center joint matching step as shown in FIG.

The character arm-leg joint matching step is a one-to-one matching step between the arm and leg joints of the CAT Rig and the arms and leg joints of the BVH file (1a) character. The arms and leg joints of the biped 40, from which the BVH file is imported, and the arms and leg joints of the CAT Rig, can be matched as follows.

The character center joint matching step is a step in which the center joint of the CAT Rig and the center joint of the BVH file (1a) character are matched. In the character center joint matching step, the point joint unit of the center joint, which is made up of a plurality of joint units, and the end point joint unit are matched one to one. The central joint, which consists of multiple joint units, includes spine joints including the pelvis, neck joints, and head joints. Here, in the spinal joint including the pelvis, the temporal joint unit becomes the pelvis, and the end joint unit becomes the last vertebra. Biped (40) represents the degree of bending of the waist by moving each of the vertebrae, while CAT (30 ') is the way that the bending of the vertebrae until the last vertebral bone (RibCage) , And the number of joints of the CAT rig and the number of joints of the character of the BVH file (1a) are different from each other, so that the starting joint unit and the end joint unit of the center joint are matched one by one.

The step of applying the character's joint rotation value is a step in which the rotation value of the character joint of the BVH file (1a) matched to the CAT Rig joint is applied to the corresponding CAT Rig joint. The step of applying the character joint rotation value according to the embodiment of the present invention is performed by dividing the step of applying the character arm joint rotation value, the step of applying the character joint joint rotation value, and the step of applying the character joint joint rotation value as shown in FIG.

The step of applying the character's arm rotation value is a step of applying the rotation value of the character arm joint of the BVH file (1a) to the arm joint of the CAT Rig as it is.

In the applying step of the character's leg joint rotation, the rotation value of the leg joint of the character of the BVH file (1a) is applied by changing the leg joint of the CAT Rig to the motion implementation of the FK (Forward Kinematics) Inverse kinematics) motion. This is because the leg joints of the biped 40 in which the BVH file is imported are implemented in the FK mode while the CAT rig is implemented in the IK mode.

 In the step of applying the character joint rotation value, the rotation value of the character joint of the BVH file (1a) is applied after the current rotation value is initialized while the joint size and position value of the CAT Rig are maintained. However, the CAT 30 'works inversely with the biped 40, so the inverse value of the rotation is calculated in the middle.

Here, the step of applying the character joint rotation value except for the leg joint is applied as a self-function in the following script to be automated.

On the other hand, the arm joint of the CAT Rig in the application of the character joint rotation value, that is, the three joints UpperArm, ForeArm and Palm of the arm are different from the local coordinate axes of Biped (40) only by 180 degrees Since the difference between the values is maintained, the current rotation value is initialized while maintaining the arm joint size and position of the CAT Rig, and then the rotation value of the character arm joint of the BVH file (1a) is applied. So that it rotates further by 180 degrees as a reference.

On the other hand, the step of applying the character's joint rotation value is obtained by calculating the rotation value of the character's foot joint of the BVH file (1a) according to the world coordinate and calculating the rotation coordinate value of the BVH file (1a) The rotation value of the character's foot joint is calculated on the basis of the local coordinate axis of the foot joint constituting the leg joint of the CAT Rig and then the character of the finally calculated BVH file 1a in the state where the foot joint size and position value of the CAT Rig are maintained The rotation value of the foot joint is applied. This process can be done through the following code.

9 (a), the relative rotation value of the end joint unit based on the start joint unit of the character center joint of the BVH file 1a as shown in FIG. 9 (a) To the end point joint unit of the CAT rig center joint as shown in Fig. This process can be done through the following code.

In the step of applying the character center rotation value, after the first image frame of the animation, the relative position value of the end joint unit of the end joint unit of the CAT Rig center joint and the relative rotation value after the current rotation value is initialized .

In the character position movement applying step, the height of the CAT character is calculated, the character height of the BVH file 1a is adjusted to be equal to the height of the CAT character, and then the root node of the character of the BVH file 1a ) Is applied to the root node of the CAT character. The root node is usually a pelvis. This prevents graphic errors such as the foot of the CAT character floating in the air. 10A shows the basic character of the CAT basic character and the basic character of the BVH file 1a imported into the Biped 40. FIG. FIG. 10 (c) shows the character joint immediately after the import, and FIG. 10 (d) shows the height of the CAT character applied to the character of the BVH file 1a imported into the biped 40, The character coordinates of the BVH file 1a imported into the Biped 40 are applied to the CAT character.

Meanwhile, since the BIP file 1b is a character animation file unique to the 3ds MAX 20 ', the 3ds MAX 20' can formally associate the BIP file 1b with the Capture Animation function of the CAT 30 ' Support. Such a Capture Animation function first automatically creates a Biped 40 to which the BIP file 1b selected by the user is applied and then directly maps the CAT Rig to the motion of the Biped 40. However, You need to directly obtain the height of the CAT rig when executing the "Capture Animation" function, and then click the Capture button after mapping to directly create a layer for copying motion in the CAT 30 '. Finally, Quot; Auto Mapping "function has a disadvantage in that it can not exactly match the character joints of the CAT 30 'and the Biped 40, so that the user must map each mouse drag do.

Accordingly, the computer graphic character animation file conversion method based on applying the joint rotation value according to the embodiment of the present invention can be applied to the BIP file 1b.

In particular, the reference character animation application of non-reference character animation file motion information according to an exemplary embodiment of the present invention applied to the BIP file 1b may include a Biped temporary creation step, a BIP file import step, a character joint rotation value detection A character joint matching step, a character joint rotation value applying step, and a character position movement applying step. In the reference character animation applying step of the non-reference character animation file motion information according to the embodiment of the present invention applied to the BVH file The process of the reference character animation applying step of the non-reference character animation file motion information according to the embodiment of the present invention described above (described above) under the condition that the BVH file 1a is replaced with the BIP file 1b can be equally applied.

That is, the Biped temporary creation step is a step in which the Biped 40, which is a character animation toolkit of the 3ds MAX 20 ', is temporarily created, and the BIP file import step is a step of creating a BIP file 1b, which is a file generated by the Biped 40 The step of detecting the joint rotation value of the character is a step of detecting the rotation value of each joint of the character according to the movement of the character of the BIP file 1b imported into the Biped 40. [

The character joint matching step is a stage in which the character joint of the BIP file 1b matching the joint of the CAT rig is selected. The step of applying the character joint rotation value is a step of applying the rotation value of the character joint of the BIP file 1b matching the CAT Rig joint Is applied to the corresponding CAT rig joint.

The height of the CAT character is calculated and the character height of the BIP file 1b is adjusted to be equal to the height of the CAT character and then the position value of the root node of the character of the BIP file 1b is CAT This is the step applied to the root node of the character.

Thus, the application process of the BIP file 1b is automated and simplified for the convenience of the user.

In the reference character animation file creation step, the reference character animation file 2 in which the motion of the character joint of the reference character animation toolkit 30 is implemented by applying the character joint rotation value of the non-reference character animation file 1 is generated . The reference character animation file generation step according to the embodiment of the present invention includes a CAT animation file generation step in which a CAT animation file in which a movement of a CAT rig joint is implemented by applying a character joint rotation value of the BVH file 1a is generated .

The method of transforming a computer graphic character animation file based on applying the joint rotation value according to an embodiment of the present invention configured as described above allows character animation files of various existing file formats to be used in a new character animation toolkit, So that animation creation / editing work can be performed easily and easily. In particular, according to an embodiment of the present invention, a computer graphic character animation file conversion method based on applying a joint rotation value detects a character joint rotation value of a BIP file or a BVH file and processes the BIP file or the BVH file using a CAT rig, Character animation file so that it can be converted smoothly and stably without distortion.

Although the method of transforming a computer graphic character animation file based on the application of the joint rotation value according to the embodiment of the present invention has been described with reference to the above description and drawings, it is only described as an example and the technical idea of the present invention It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention.

1: Non-reference character animation file
1a: BVH file
1b: BIP file
2: Reference character animation file
10: Computer device
20: Computer graphics program
20 ': 3ds MAX
30: Reference Character Animation Toolkit
30 ': CAT
40: Biped

Claims (7)

delete delete A computer graphics program activation step in which a computer graphic program 20 installed in the computer device 10 is activated;
A CAT (Character Animation Toolkit) 30 ', which is a character animation toolkit of a computer graphics program 3ds MAX 20', is executed as the reference character animation toolkit 30, and then a character modeling setting and a CAT A CAT rig generation step in which the Rig is generated by the user;
A Biped temporary creation step in which a Biped 40, which is a character animation toolkit of the 3ds MAX 20 ', is temporarily created;
A BVH file import step in which an actual motion capture file (BioVision Hierarchial data) 1a is imported into the Biped 40;
A character joint rotation value detection step of detecting a rotation value of each joint of the character according to a character movement of the BVH file (1a) imported into the biped (40);
A character joint matching step of selecting a character joint of the BVH file (1a) matching the joint of the CAT Rig;
A step of applying a character joint rotation value to which the rotation value of the character joint of the BVH file (1a) matching the CAT Rig joint is applied to the CAT Rig joint;
The height of the CAT character is calculated and the character height of the BVH file 1a is adjusted to be equal to the height of the CAT character and then the position value of the root node of the character of the BVH file 1a is CAT A character position movement applying step of applying a character position movement applied to a root node of the character;
A CAT animation file in which the movement of the CAT Rig joint is implemented by applying the character joint rotation value of the BVH file 1a is generated and the CAT animation file is generated and then the temporarily generated Biped 40 is deleted. And generating an animation file,
Wherein the character joint matching step comprises:
A character arm-leg joint matching step in which the arms and leg joints of the CAT Rig and the BVH file (1a) character arms and leg joints are matched one-to-one; The joint center of the central joint and the end joint unit, which consist of a plurality of joint units including the spinal, knee, and head joints, including the pelvis, with the center joints of the CAT rig and the BVH file One-to-one matching, the pivot joint of the spinal joint including the pelvis to be the pelvis, and the end point joint unit to be the last vertebra bone,
The step of applying the character joint rotation value includes:
The relative rotation value of the end joint unit based on the start joint unit of the character center joint of the BVH file (1a) is applied to the end joint unit of the CAT Rig center joint, and after the first image frame of the CAT rig continuously, A step of applying a relative position value to a starting joint unit of an end point joint unit of a joint and a relative rotation value after the current rotation value is initialized;
CAT Rig's leg joint is changed to FK (Forward Kinematics) motion implementation, and the rotation value of the character's leg joint of the BVH file (1a) is applied. Then, the CAT Rig's leg joint is implemented as an IK (Inverse Kinematics) And is obtained by calculating the rotation value of the character's foot joint of the BVH file 1a in accordance with the world coordinate. The character's foot joint of the BVH file 1a calculated according to the world coordinate Of the CAT Rig is calculated based on the local coordinate axes of the foot joints of the CAT Rig, and then the final calculated BVT file (1a) A step of applying a rotation amount of a character's leg joint to apply a rotation value;
The rotation value of the arm of the character of the BVH file (1a) is applied to the arm joint of the CAT Rig, the current rotation value is initialized while the arm joint size and the position of the CAT Rig are maintained, and then the character of the BVH file And applying a rotation value of the arm joint so as to further rotate the knee joint by 180 DEG with respect to the local coordinate X axis. How to convert animation files. delete delete delete A computer graphics program activation step in which a computer graphic program 20 installed in the computer device 10 is activated;
A CAT (Character Animation Toolkit) 30 ', which is a character animation toolkit of a computer graphics program 3ds MAX 20', is executed as the reference character animation toolkit 30, and then a character modeling setting and a CAT A CAT rig generation step in which the Rig is generated by the user;
A Biped temporary creation step in which a Biped 40, which is a character animation toolkit of the 3ds MAX 20 ', is temporarily created;
A BIP file import step in which a BIP file 1b, which is a file generated by the Biped 40, is imported into the Biped 40;
A character joint rotation value detection step of detecting a rotation value of each joint of the character according to a character movement of the BIP file 1b imported into the biped 40;
A character joint matching step of selecting a character joint of the BIP file (1b) matching the joint of the CAT Rig;
A character joint rotation value application step in which the rotation value of the character joint of the BIP file (1b) matching the CAT Rig joint is applied to the CAT rig joint;
The height of the CAT character is calculated and the character height of the BIP file 1b is adjusted to be equal to the height of the CAT character and then the position value of the root node of the character of the BIP file 1b is CAT A character position movement applying step of applying a character position movement applied to a root node of the character;
And a CAT animation file generation step of generating a CAT animation file in which motion of the CAT rig joint is implemented by applying the character joint rotation value of the BIP file (1b). How to convert files.

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