KR101088373B1 - Apparatus and method for rendering soft shadow with light mesh, and computer readable media for storing computer program - Google Patents

Abstract

 Disclosed are an apparatus and method for producing 3D graphic contents and a computer readable recording medium storing computer programs. The apparatus is a graphic production apparatus for producing three-dimensional graphic content including a shadow of a predetermined object according to a given light source information, the virtual light source for generating a virtual light source for irradiating the virtual light to the object according to the given light source information Generation unit; And a graphic generating unit for producing the 3D graphic content by using the virtual light emitted from the virtual light source, wherein the light source information includes information regarding the position of at least one light source. Therefore, the present invention has the effect of producing a natural and realistic soft shadow.

Description

Apparatus and method for rendering soft shadow with light mesh, and computer readable media for storing computer program}

1 is a reference diagram for explaining a conventional shadow generating apparatus.

2 is a block diagram of an embodiment for explaining an apparatus for producing 3D graphic contents according to the present invention.

3 is a reference diagram for explaining a virtual light source.

4 is a reference diagram for explaining a grid.

5 to 7 are reference diagrams for explaining the effect when the soft shadow of the object is stopped by the present invention.

8 to 9 are reference diagrams for explaining the effect of generating a soft shadow of the moving object according to the present invention.

10 is a flowchart of an embodiment for explaining a method of producing 3D graphic contents according to the present invention.

<Description of Symbols for Main Parts of Drawings>

210: virtual light source generation unit 220: user interface unit

230: graphic generator

The present invention relates to the production of graphic contents, and more particularly, to an apparatus and method and a computer program for generating a soft shadow by generating a virtual light source around the object and generating a soft shadow according to the generated virtual light source. It relates to a computer-readable recording medium for storing the.

1A and 1B are reference diagrams for describing a conventional shadow generating apparatus. More specifically, the conventional shadow generation apparatus uses the Recursive Ray Tracing Algorithm (RRTA) technique.

FIG. 1A is a reference diagram for explaining a process of generating a hard shadow using the RRTA technique. As illustrated, the point light source 110 irradiating light in all directions 360 degrees irradiates light onto the object 120 to generate the shadow 130 on the reference plane 140.

At this time, the boundary of the shadow 130 is clearly observed. As such, shadows that clearly distinguish between inside and outside can be termed hard shadows. In contrast, a shadow whose interior and exterior are not clearly distinguished may be referred to as a soft shadow.

FIG. 1B is a reference diagram for explaining a process of generating a soft shadow using the RRTA technique. As shown, the point light sources 110, 112, and 114, which irradiate light in all directions 360 degrees, irradiate the object 120 to generate shadows 130, 132, and 134 on the reference plane 140. .

In this case, the generated shadows 130, 132, and 134 also include a portion 137 in which two or more shadows 130, 132, or 134 overlap each other, and a portion 135 or 136 that does not overlap each other. Here, if the distance between the point light sources 110, 112, or 114 is close, and thus the distance between the shadows 130, 132, or 134 is close, then the boundary of the central shadow 130 is the boundary of the peripheral shadow 132 or 134. The shadows at 137 are darker than the shadows at 135 or 136 because they are mostly contained inside. As a result, since the interior 135 to 137 and the exterior of the shadows 130, 132 and 134 are not clearly distinguished, and the boundary portion 135 or 136 of the shadows 130, 132 and 134 is blurry compared to the reference numeral 137, The shadows 130, 132, and 134 generated at this time become soft shadows.

In the conventional shadow generating apparatus, as the number of point light sources 110, 112, or 114 is present, soft shadows may be generated more naturally. However, the conventional shadow generating apparatus cannot generate soft shadows using only one point light source.

As a result, the conventional shadow generating apparatus has a problem in that, in order to generate a more natural soft shadow, the information on the point light source is additionally required in addition to the information on the point light source previously given. In addition, the conventional shadow generating apparatus has a problem that it takes a long time to generate a soft shadow. This problem becomes more pronounced as the number of point light sources is used.

It is an object of the present invention to provide a three-dimensional graphic content production apparatus that generates a predetermined virtual light source around an object and generates soft shadows according to the generated virtual light source.

Another object of the present invention is to provide a method for producing three-dimensional graphic contents, which generates a predetermined virtual light source around an object and generates soft shadows according to the generated virtual light source.

Another technical object of the present invention is to provide a computer-readable recording medium for generating a predetermined virtual light source around an object and generating a soft shadow according to the generated virtual light source.

In order to achieve the above object, the three-dimensional graphic content production apparatus according to the present invention, in the graphic production apparatus for producing a three-dimensional graphic content including the shadow of a predetermined object in accordance with the given light source information, the object according to the given light source information A virtual light source generator for generating a virtual light source for irradiating virtual light to the virtual light source; And a graphic generating unit for producing the 3D graphic content by using the virtual light emitted from the virtual light source, wherein the light source information includes information regarding the position of at least one light source.

The virtual light source generating unit of the present invention preferably generates a virtual light source for irradiating the virtual light to the object at a position spaced apart from the area where the light is distributed according to the given light source information on the surface of the object.

Preferably, the graphic generation unit of the present invention produces the three-dimensional graphic content in consideration of the spatial distribution of the virtual light emitted from the virtual light source.

The virtual light source generating unit of the present invention preferably generates a plurality of the virtual light sources and controls the predetermined distance for each of the virtual light sources.

The virtual light source generating unit of the present invention preferably controls the predetermined distance for each part of the area and generates the virtual light source at a position spaced apart from the predetermined distance in each part of the area.

The virtual light source generating unit of the present invention preferably generates at least one virtual light source between each part of the area and the virtual light source generated at a position spaced apart from the predetermined distance.

The object of the present invention is in motion, the virtual light source generating unit preferably maintains a predetermined time interval to generate the virtual light source. A plurality of light sources of the present invention are present, and the virtual light source generation unit preferably generates the virtual light sources at predetermined time intervals for each of the light sources.

Preferably, the virtual light source generation unit of the present invention currently generates a virtual light source except the virtual light source previously generated among the virtual light sources to be generated. It is preferable that the physical properties of the virtual light source of the present invention coincide with the physical properties of the light source.

In order to achieve the above another object, the three-dimensional graphics content production method according to the present invention, in the graphics production method for producing a three-dimensional graphics content including the shadow of a predetermined object according to the given light source information, according to the given light source information Generating a virtual light source for irradiating virtual light onto the object; And producing the 3D graphic content by using the virtual light irradiated from the virtual light source, wherein the light source information includes information about the position of the light source.

The generating of the virtual light source of the present invention may include generating a virtual light source irradiating the virtual light to the object at a position spaced a predetermined distance from a region where light is distributed according to the given light source information on the surface of the object, In the producing step, it is preferable to produce the three-dimensional graphic content according to the spaced position and the number of the generated virtual light source.

In the generating of the virtual light source of the present invention, it is preferable to generate a plurality of the virtual light sources and to control the predetermined distance for each of the virtual light sources. The generating of the virtual light source of the present invention preferably controls the predetermined distance for each part of the area and generates the virtual light source at a position spaced apart from the predetermined distance in each part of the area.

In the generating of the virtual light source of the present invention, it is preferable to generate at least one virtual light source between each part of the area and the virtual light source generated at a position spaced apart from the predetermined distance.

In order to achieve the above another object, a computer-readable recording medium for storing a computer program according to the present invention, in the graphic production method for producing three-dimensional graphic content including the shadow of a predetermined object in accordance with a given light source information, Generating a virtual light source irradiating virtual light to the object according to the given light source information; And producing the 3D graphic content by using the virtual light irradiated from the virtual light source, wherein the light source information includes information about the position of the light source.

Hereinafter, an embodiment of a computer-readable recording medium storing a 3D graphic content producing apparatus and method and a computer program according to the present invention will be described in detail with reference to the accompanying drawings. However, terms to be described below are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

FIG. 2 is a block diagram of an embodiment for describing a 3D graphic contents producing apparatus (hereinafter referred to as “the apparatus”) according to the present invention. The virtual light source generating unit 210 and the user interface unit 220 are shown. And a graphic generator 230.

3A to 3C are reference diagrams for describing the virtual light source.

The apparatus produces three-dimensional graphic contents 310 and 370 including a soft shadow 370 of a predetermined object 310 according to the given light source information. Here, the light source information preferably includes information regarding the position of the light source 350. In addition, the light source information preferably includes information regarding the number of light sources 350. On the other hand, the light source 350 preferably irradiates light in all directions of 360 degrees. At this time, the amount of light according to the irradiated angle is not limited, the light source 350 may or may not be a point light source.

The virtual light source generator 210 is a virtual light source that irradiates virtual light to the object 310 at a position spaced apart from the area 320 in which light is distributed according to given light source information on the surface of the object 310. Generate light sources 341 to 348. On the other hand, the virtual light source generating unit 210 preferably generates a virtual light source (including 341 to 348) for irradiating the virtual light to the object 310 at a position spaced a predetermined distance from all the surfaces of the object (310). . This is because the region 320 in which light is distributed according to the light source information may be strictly the entire surface of the object 310. In addition, the virtual light source generator 210 also generates one or more virtual light sources 349 for irradiating the virtual object to the object 310 at a position spaced apart from the region 360 where the shadow 370 is generated. This is preferred. In this case, the virtual light source 349 reflects the virtual light by reflecting the given light source information. IN 1 means given light source information.

In addition, IN 1 preferably includes information on how many light sources 350 exist and information on where each light source 350 exists in three dimensions. According to the information included in such IN 1, it is determined in which direction and in which shape the shadow of the object 310 in the three-dimensional graphic contents 310 and 370 produced is generated.

IN 3 means given image information. Here, the image information refers to information about the three-dimensional graphic content to be produced. The three-dimensional graphic content includes a predetermined object 310. The kind of the object 310 is not limited. For example, the image information represents information regarding which shape and where the object 310 exists in three dimensions.

The virtual light source generator 210 may control the above-described predetermined distance for each virtual light source 341 to 348 and generate a plurality of virtual light sources 341 to 348. To this end, the virtual light source generator 210 controls the predetermined distance for each of the portions 321 to 328 of the region 320 described above, and is spaced apart from the predetermined distance in each of the portions 321 to 328. It is desirable to create a virtual light source (one of 341 to 348) at the location. At this time, each of the reference numerals 321 to 328 preferably matches each of the reference numerals 341 to 348. Meanwhile, the virtual light source generator 210 may also control a predetermined distance between the region 370 where the shadow 360 is generated and the virtual light source 349.

To this end, the virtual light source generator 210 may generate hemispheres (one of hemi-spheres 331 to 338) having a predetermined radius for each portion 321 to 328 of the region 320 described above. The radius may be different for each portion (321 to 328) or may be the same. In this case, the radius becomes the predetermined distance mentioned above.

At this time, it is assumed that there is a surface 340 connecting all the hemispheres 331 to 338 generated. Here, it is preferable that the virtual light sources 341 to 348 exist at a portion where the hemispheres (one of 331 to 338) and the surface 340 meet.

Meanwhile, the virtual light source generator 210 may further generate one or more hemispheres (not shown) in addition to the above-described hemispheres (one of 331 to 338) for each portion (321 to 328) of the region 320 described above. have. In this case, it is preferable that a virtual light source (not shown) exists for each hemisphere (not shown). As a result, the virtual light source generator 210 may generate one or more virtual light sources for each portion 321 to 328.

If the virtual light source generator 210 generates a plurality of virtual light sources for each of the portions 321 to 328, the generated plurality of virtual light sources and each portion may be located in a straight line. In this case, one or more virtual light sources (not shown) exist between each portion (one of 321-328) and the maximum spaced virtual light source (one of 341-348). Here, the distance between the virtual light source (one of 341 to 348) that is most spaced apart from each of the virtual light sources matched to each of the portions 321 to 328 and each of the portions is referred to as the maximum separation distance K below. . That is, the maximum separation distance K exists for each part 321 to 328 and means the largest value among predetermined distances of all virtual light sources matching each part. In addition, the number of virtual light sources (not shown) existing between each portion 321 to 328 and one of the virtual light sources 341 to 348 is referred to as density (STEP) hereinafter. In this case, it is assumed that each of the portions 321 to 328 and the virtual light sources matched thereto are located on the same plane.

Since the virtual light source 341 to 348 may exist on a surface such as the hemisphere (one of 331 to 348), it may be referred to as a light mesh (LM) below. On the other hand, the physical characteristics of the virtual light sources 341 to 348 may or may not match the physical characteristics of a given light source 350.

In the above description, each portion (one of 321 to 328), each hemisphere (one of 331 to 338) and each virtual light source (one of 341 to 348) are represented by eight being present, but this is given for ease of explanation. It can vary depending on the light source information IN1 and the given image information IN3.

The light source information IN 1 given to the virtual light source generating unit 210 may be information about the plurality of light sources 350. In this case, the virtual light source generating unit 210 may have a predetermined time interval for each light source 350. Light sources 341 to 348 may be generated. Here, the time interval is variable.

The virtual information generated by the virtual light source generator 210 is transmitted to the graphic generator 230 to be described below. Here, the virtual information refers to information about a virtual light source, and more specifically, information about how many generated virtual light sources exist in three dimensions and information about where each virtual light source exists in three dimensions. It is preferable to include.

The user interface 220 provides a user interface (not shown) to which the user can set light source information to the outside. In this case, IN 2 may mean light source information input by the user, or may mean view information.

The graphic generator 230 produces 3D graphic content using the given image information IN 3 and the virtual information received from the virtual light source generator 210. That is, the graphic generator 230 expresses the given image information IN 3 in consideration of the spatial distribution of the virtual light irradiated to the object 310 according to the received virtual information. Accordingly, the graphic generator 230 generates a soft shadow of the object 310 included in the given image information IN 3 according to the given virtual information. OUT 2 means 3D graphic content generated by the graphic generator 230. OUT 2 may be delivered to the user interface 220 and displayed.

In producing the 3D graphic contents 310 and 370, the graphic generator 230 may divide the 3D space 410 in which the 3D graphic content is to be produced into a plurality of spaces. In this case, each partitioned space may be referred to as a grid cell. Each GRID cell may or may not have a grid shape.

4A and 4B are examples of a view of the three-dimensional space 410 from one side. As shown in FIG. 4A, all GRID cells may have a constant size, and as shown in FIG. 4B, the GRID cells may have different sizes.

In the case of FIG. 4B, the size of the GRID cell to which the object 310 belongs is smaller than the size of the GRID cell to which the object 310 does not belong. For example, the graphic generator 230 divides the three-dimensional space 410 into eight first subspaces 412, and among the eight first subspaces 412, the first sub to which the object 310 belongs. The space 412 is divided into eight second subspaces 414, and the second subspace 414 of the eight second subspaces 414 to which the object 310 belongs is eight third subspaces 416. Can be divided into Despite being eight, the reason why it is represented by four in FIG. 4B is that FIG. 4B is a view of the three-dimensional space 410 from one side. On the other hand, eight is for convenience of description, it is not limited thereto.

In this case, the graphic generator 230 may be configured with respect to the first subspace 412 not divided into the second subspace 414 and the second subspace 414 not divided into the third subspace 416. Since there is no need to produce the graphic content, the graphic content is produced more quickly than in the case where the graphic content is produced for the entire three-dimensional space 410.

Since the beginning of the research in the field of 3D graphics, the goal of researchers in this field is to reproduce the realistic feeling like reality. Accordingly, it is today's reality that researches on rendering technology for realizing a very realistic 3D image are being actively conducted. In order to realize more realistic 3D image, soft shadows are required rather than hard shadows. Therefore, the present invention is preferably applicable to the rendering field.

5 to 7 are reference diagrams for explaining the effect when the soft shadow of the object is stopped by the present invention.

FIG. 5A is a diagram illustrating three-dimensional graphic contents produced by the Recursive Ray Tracing Algorithm (RRTA) technique, and FIGS. 5B to 5C are diagrams showing the three-dimensional graphics contents produced by the present invention.

As shown, a predetermined point light source (not shown) exists at the position 510. The point light source (not shown) irradiates light in all directions of 360 degrees, and the amount of light irradiated by the point light source is not limited.

According to the RRTA technique, the shadow 530 of the object 520 may be manufactured with hard shadows, resulting in unnatural and unrealistic reality. In contrast, the shadows 532 or 534 produced by the present invention are natural and highly realistic because they are made of soft shadows even if only the information about a single point light source (not shown) is given to the present invention.

In the case of FIG. 5B, K is 2.5 and STEP is 3. In FIG. 5C, K is 2 and STEP is 5. 5A to 5C, only one GRID cell exists in the three-dimensional space 410.

6A is a diagram illustrating 3D graphic contents produced by the RRTA technique, and FIGS. 6B to 6C are diagrams illustrating 3D graphic contents produced by the present invention.

As shown, a predetermined point light source (not shown) exists at the positions 610 to 614. The point light source (not shown) irradiates light in all directions of 360 degrees, and the amount of light irradiated by the point light source is not limited.

According to the RRTA technique, when the shadow 630 of the object 620 is manufactured as a soft shadow, the shadow 630 needs to track various paths of rays propagated from a plurality of point light sources. .

In contrast, the shadows 632 or 634 produced by the present invention are made of soft shadows, so that they are natural, realistic, and low in computation.

In the case of FIG. 6B, K is 2 and STEP is 2. In FIG. 6C, K is 2 and STEP is 3. In FIG. 6A, only one GRID cell exists in the three-dimensional space 410. However, in FIGS. 6B and 6C, a plurality of GRID cells exist in the three-dimensional space 410. The GRID cell occupies 1/40 of the total space 410.

FIG. 7A is a diagram illustrating 3D graphic contents produced by the RRTA technique, and FIGS. 7B to 7C are diagrams illustrating 3D graphic contents produced by the present invention.

As shown, a predetermined point light source (not shown) exists at the positions 710 to 716. The point light source (not shown) irradiates light in all directions of 360 degrees, and the amount of light irradiated by the point light source is not limited.

According to the RRTA technique, when the shadow 730 of the object 720 is made of soft shadow, since the point light source uses a plurality of point light sources, the graphic generator 230 takes a long time to generate the shadow 730. do.

In contrast, the shadows 732 or 734 produced by the present invention are natural and realistic because they are made of soft shadows. At this time, the amount of calculation necessary to generate the soft shadow is only a predetermined amount larger than the amount of calculation necessary to generate the hard shadow.

In the case of FIG. 7B, K is 2 and STEP is 2. In FIG. 7C, K is 2 and STEP is 4. In FIG. 7A, only one GRID cell exists in the three-dimensional space 410. However, in FIGS. 7B and 7C, a plurality of GRID cells exist in the three-dimensional space 410. The GRID cell occupies 1/80 of the total space 410.

FIG. 8 is a reference diagram for visually explaining an effect of generating a soft shadow of the moving objects 820 to 824 according to the present invention.

As illustrated, the stationary object 810 and the moving objects 820 to 824 may coexist in the objects 810 to 824 to be generated by the graphic generator 230. In this case, the virtual light source generation unit 210 maintains a predetermined time interval and generates a virtual light source. The 3D graphic contents 810 to 830 illustrated in FIG. 8A are 3D graphic contents generated immediately before the graphic generator 230, and the 3D graphic contents illustrated in FIG. 8B ( 810 to 832 are 3D graphic contents currently generated by the graphic generator 230.

The shadows 830 and the shadows 832 produced just before are both soft shadows and can be seen as natural and highly realistic.

9 are reference diagrams for explaining the effect of generating the soft shadow of the moving objects 920 to 922 according to the present invention. Reference numeral 910 denotes a stationary object, reference numerals 920 and 922 each indicate a moving object, reference numerals 930 to 934 respectively indicate a light source according to the given light source information IN1, and reference numerals 950 and 952 respectively. Denotes a virtual light source generated by the virtual light source generator 210.

Since the objects 920 and 922 being moved exist in the 3D graphic content to be produced by the graphic generator 230, the virtual light source generator 210 preferably generates a virtual light source every time a movement occurs. . The three-dimensional graphic contents 910 to 922 illustrated in FIG. 9A are three-dimensional graphic contents generated by the graphic generator 230 immediately before, and the three-dimensional graphic contents illustrated in FIG. 910 to 922 are 3D graphic contents currently generated by the graphic generator 230.

In this logic, the virtual light source generator 210 preferably generates a virtual light source for each light source 930, 932, or 934. At this time, the virtual light source generation unit 210 preferably generates a virtual light source other than the virtual light source previously generated among the virtual light sources to be currently generated.

For example, in FIG. 9A, it is assumed that the virtual light source generator 210 generates the virtual light source in the order of the first light source 930, the second light source 932, and the third light source 934. In this case, the virtual light source generator 210 may generate a virtual light source existing at a position 952 with respect to the first light source 930.

Thereafter, the virtual light source generator 210 may generate virtual light sources existing at positions 950 and 952 with respect to the second light source 932. However, since the virtual light source existing at the position of the reference number 950 has been previously generated, the virtual light source generator 210 does not need to generate the virtual light source existing at the position of the reference number 950 again.

This logic can be similarly applied to FIG. 9B.

FIG. 10 is a flowchart illustrating an example of a method for producing 3D graphic contents according to the present invention, and includes a step of generating a virtual light source (step 1010) and a step of generating graphic content (step 1020). .

The virtual light source generator 210 generates a predetermined virtual light source for the image information IN3 according to the light source information IN1 given through the user interface 220 (step 1010). The graphic generator 230 generates 3D graphic content including soft shadows according to the generated virtual information (step 1020).

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, which are also implemented in the form of carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. And functional programs, codes and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

What has been described above is only one embodiment for implementing a computer-readable recording medium for storing a soft shadow generating apparatus and method and a computer program through the generation of a virtual light source according to the present invention, the present invention described above Without departing from the gist of the present invention as claimed in the following claims without being limited to the examples, anyone of ordinary skill in the art to which the invention belongs will be able to practice various changes.

As described above, the computer-readable recording medium for storing the soft shadow generating apparatus and method and the computer program through the virtual light source generation according to the present invention has the effect of producing a fast and realistic soft shadow.

Claims (18)

In the graphic production apparatus for producing three-dimensional graphic content including the shadow of a predetermined object according to a given light source information, A virtual light source generator for generating a virtual light source for irradiating virtual light to the object according to the given light source information; And And a graphic generating unit for producing the 3D graphic content by using the virtual light emitted from the virtual light source, wherein the light source information includes information about the position of at least one light source. Device. The method of claim 1, wherein the virtual light source generation unit, And generating a virtual light source for irradiating the virtual light to the object at a position spaced apart from the area where the light is distributed according to the given light source information among the surface of the object. The method of claim 1, wherein the graphic generating unit, And producing the 3D graphic content in consideration of the spatial distribution of the virtual light emitted from the virtual light source. The method of claim 2, wherein the virtual light source generation unit, And generating a plurality of virtual light sources and controlling the predetermined distance for each of the virtual light sources. The method of claim 2, wherein the virtual light source generation unit, And controlling the predetermined distance for each part of the area, and generating the virtual light source at a position spaced apart from the predetermined distance in each part of the area. The method of claim 4 or 5, wherein the virtual light source generation unit, And generating at least one virtual light source between each part of the area and the virtual light source generated at a position spaced apart from the predetermined distance. The method according to claim 1, The object is moving, and the virtual light source generating unit generates the virtual light source, maintaining a predetermined time interval. The method according to claim 1, And a plurality of light sources, and the virtual light source generating unit generates the virtual light source at a predetermined time interval for each light source. The virtual light source generating unit of claim 7 or 8, 3D graphic contents production apparatus, characterized in that for generating a virtual light source of the virtual light source, except for the previously generated virtual light source to be generated currently. The method according to claim 1, And physical properties of the virtual light source coincide with physical properties of the light source. The apparatus of claim 1, wherein the light source information further includes information about the number of light sources. In the graphic production method for producing three-dimensional graphic content including the shadow of a predetermined object according to a given light source information, Generating a virtual light source irradiating virtual light to the object according to the given light source information; And Producing the 3D graphic content by using the virtual light radiated from the virtual light source, And the light source information includes information regarding the position of the light source. The virtual light source of claim 12, wherein the generating of the virtual light source comprises: generating a virtual light source irradiating the virtual light to the object at a position spaced a predetermined distance from a region in which light is distributed according to the given light source information on the surface of the object; Create, The producing may include producing the 3D graphic content according to the spaced position and the number of generated virtual light sources. The method of claim 13, wherein the generating of the virtual light source comprises generating a plurality of the virtual light sources and controlling the predetermined distance for each of the virtual light sources. The method of claim 13, wherein the generating of the virtual light source comprises controlling the predetermined distance for each part of the area and generating the virtual light source at a position spaced apart from the predetermined distance in each part of the area. How to create 3D graphic contents. The method of claim 14 or 15, wherein the generating of the virtual light source comprises generating at least one virtual light source between each part of the area and the virtual light source generated at a position spaced apart from the predetermined distance. 3D graphics content production method. 13. The method of claim 12, The object is moving, and the step of generating the virtual light source is a three-dimensional graphics content production method, characterized in that for generating a virtual light source maintaining a predetermined time interval. In the graphic production method for producing three-dimensional graphic content including the shadow of a predetermined object according to a given light source information, Generating a virtual light source irradiating virtual light to the object according to the given light source information; And Producing the 3D graphic content by using the virtual light radiated from the virtual light source, The light source information is a computer-readable recording medium for storing a computer program for performing a three-dimensional graphics content production method characterized in that it comprises information about the position of the light source.

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