JP4959518B2 - 3D CG object interference check program - Google Patents

Description

  The present invention relates to a program for checking mutual interference of three-dimensional CG objects related to building equipment displayed on a three-dimensional CG space display device in a three-dimensional CAD system, which is a design and drafting support system using a computer. .

  Conventionally, a technique for confirming interference between three-dimensional CG objects arranged in a three-dimensional CG space has been developed. For example, in Patent Document 1, in a three-dimensional shape composed of a plurality of three-dimensional shape elements, a three-dimensional shape element pair that interferes with each other is displayed in a larger size than other three-dimensional shape elements without performing a viewpoint change such as an enlarged display. There has been disclosed a three-dimensional shape processing technique capable of displaying which three-dimensional shape elements interfere with each other by displaying them in a relatively emphasized manner.

  According to this technique, it is possible to emphasize the interfering 3D shape element by hiding the 3D shape element other than the interfering 3D shape element in the 3D CG space, The interfering 3D shape elements can be emphasized by displaying the 3D shape elements other than the interfering 3D shape elements in a translucent display in the 3D CG space.

JP 2004-5355 A

  As described above, the interfering three-dimensional shape element pair is highlighted more than the other three-dimensional shape elements, so that it is easy to confirm interference between the three-dimensional shape elements arranged in the three-dimensional CG space. However, the three-dimensional shape element in which interference is confirmed cannot be seen from a predetermined viewpoint position and line-of-sight direction in the three-dimensional CG space, and is not considered to be interference in the sleeve (hole formed in the building frame). There are problems that it is difficult to adopt as a building equipment CAD system, such as judgment, judgment that objects excluded in advance do not interfere with each other, and output of information on interfering 3D shape elements could not be output. there were.

  An object of the present invention is to accurately determine an interference state of a three-dimensional CG object by referring to information on a sleeve position and an exclusion list in order to solve the above-described problem, and to determine a three-dimensional CG determined to be interference. The object can be displayed on the 3D CG space display device in a color that can be easily confirmed by the user, and the information can be output. If the user arbitrarily selects the output 3D CG object information, the selection is performed. It is an object of the present invention to provide an unprecedented excellent system that can display a three-dimensional CG object based on the obtained information from a viewpoint position and a line-of-sight direction that are easy for a user to confirm in a three-dimensional CG space.

The invention according to claim 1 is a three-dimensional CG object interference check program that causes a computer to function as a three-dimensional CG object interference check system that checks an interference state in a three-dimensional CG space of a three-dimensional CG object representing a building facility. 3D CG object data storage means for storing and storing 3D shape data and color data of the 3D CG object in the computer, and 3D shape data stored in the 3D CG object data storage means, Based on the color data, a 3D CG object display means for displaying a 3D CG object on the 3D CG space display device, and an interference state check of the 3D CG object displayed on the 3D CG space display device are executed. Interference check Execution means, excluded object storage means for storing a three-dimensional CG object to be excluded from the interference state check target, and the excluded object storage among the three-dimensional CG objects displayed on the three-dimensional CG space display device. Surface data creation means for creating surface data of a 3D CG object excluding the 3D CG object stored in the means, interference determination means for judging interference between the surface data created by the surface data creation means, When interference between the surface data is determined by the interference determination means, a sleeve determination means for determining whether or not the location of the interference is a sleeve, and the location of the interference by the sleeve determination means is the sleeve. If it is determined that the An interference recognition unit that recognizes the location as an interference part of the three-dimensional CG object, an identification data storage unit that stores identification data that is information of an interference check result certified by the interference recognition unit, and an identification data storage unit Color data setting for setting identification data output means for outputting stored identification data and color data stored in the three-dimensional CG object data storage means for the three-dimensional CG object including the interference unit to a predetermined color 3D CG based on the 3D shape data and the color data stored in the 3D CG object data storage means when the color data is set to a predetermined color by the means and the color data setting means 3D CG object color display means for displaying an object on the 3D CG space display device; One of the identification data output by the identification data output means is accepted, and a selection corresponding to the three-dimensional CG object based on the identification data for which the selection is accepted is accepted. Predetermined at a certain distance from the position of the interfering 3D CG object on the line between the viewpoint position displayed on the 3D CG space display device at the time and the position of the interfering 3D CG object A function including an interference object display confirmation unit that displays on the three-dimensional CG space display device in accordance with the viewpoint position and a predetermined gaze direction from the predetermined viewpoint position toward the interfering three-dimensional CG object. A three-dimensional CG object interference check program.

  The three-dimensional CG object interference check program according to the present invention can display a three-dimensional CG object determined to interfere with a predetermined color on a three-dimensional CG space display device. It becomes easy to confirm the interference state between the three-dimensional CG objects on the display device. In addition, since the three-dimensional CG object that originally does not need to check the interference state can be excluded in advance, the efficiency of the interference check can be improved. In addition, since interference between piping, ducts, equipment, and architecture can be calculated three-dimensionally and visually confirmed, it is possible to eliminate rework in drawing drawing work.

  In addition, since information related to the 3D CG object determined to be interfered by the interference check can be output, it is easy to manage the information. When selected, the 3D CG object based on the selected information can be displayed from the viewpoint position and line-of-sight direction that the user can easily confirm in the 3D CG space, so the interference state of the 3D CG object can be further confirmed. It becomes easy to do.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an outline of a computer three-dimensional CG object interference check system provided by a three-dimensional CG object interference check program according to the first embodiment of the present invention. 10 is a three-dimensional CG object data storage means, 12 is a three-dimensional shape data, 14 is color data, 16 is a three-dimensional CG object display means, 18 is an interference check execution means, 20 is an excluded object storage means, and 22 is surface data creation Means 24, interference judgment means 26, sleeve judgment means 28, interference recognition means 30, identification data storage means 32, identification data output means 34, color data setting means 34, three-dimensional CG object color display means 36 , 38 indicate interference object display confirmation means. 2 and 4 show the processing flow of the three-dimensional CG object interference check system in the embodiment of the present invention.

First, the 3D CG object display means 16 displays the 3D CG object on the 3D CG space display device based on the 3D shape data 12 and the color data 14 stored in the 3D CG object data storage means 10. . Subsequently, in order to check the interference state of the three-dimensional CG object in the three-dimensional CG space, the interference check execution means 18 in the three-dimensional CG space among the three-dimensional CG objects displayed on the three-dimensional CG space display device. A three-dimensional CG object to be checked for an interference state is detected. Note that the three-dimensional shape data 12 includes X coordinate, Y coordinate, and Z coordinate value data of each vertex of the three-dimensional shape.

Here, prior to the check of the interference state, information (exclusion list) of the three-dimensional CG object that is not checked for the interference state is stored in the exclusion object storage unit 20 in advance, and the surface data creation unit 22 performs the interference check. The execution means 18 excludes the three-dimensional CG object stored in the excluded object storage means 20 from the detected three-dimensional CG object, and creates surface data of the excluded three-dimensional CG object. For example, a rectangular duct has six surfaces, and a cylindrical pipe recognizes that the surface has a plurality of strip-shaped rectangular surfaces, and creates surface data.

  Subsequently, the interference determination unit 24 determines whether the surface data created by the surface data creation unit 22 interfere with each other. The determination method is performed based on whether or not the coordinates of the line segment connecting the vertices based on the other surface data are included in the range of one surface data (based on the coordinate data of each vertex).

  Next, when interference between the surface data is determined by the interference determination unit 24, the sleeve determination unit 26 determines that the location of the interference is a sleeve (a hole formed in a beam or the like, or a cylindrical shape or a rectangular parallelepiped shape). ) Position. When it is determined that the position of the sleeve, it is not determined that the location of the interference is interference (because the sleeve is present at the location of interference and interference does not occur in the first place). Conversely, when it is determined that the position is not the position of the sleeve, the interference recognition unit 28 determines that the location of the interference is an interference of a three-dimensional CG object in the three-dimensional CG space. For example, when an element called a sleeve is drawn by a CAD system at a location where a pipe or duct passes through a building beam, wall, or floor, the location is not regarded as interference.

  Subsequently, the identification data of the three-dimensional CG object recognized by the interference recognition means 28 as interference of the three-dimensional CG object is stored in the identification data storage means 30 and 3 stored in the identification data storage means 30. Identification data of the dimension CG object is output by the identification data output means 32. The output destination may be on a three-dimensional CG space display device, or may be output as data of spreadsheet software, for example. The identification data means an interference check result, and represents data including the name of a three-dimensional CG object and the amount of interference, for example. Further, the interference amount means the maximum distance that the surfaces of the three-dimensional CG object are biting in the Z-axis direction of the three-dimensional CG space, and if the three-dimensional CG object is moved in the Z-axis direction by that distance, It will not interfere.

  Then, the color data setting unit 34 sets the color data 14 of the three-dimensional CG object that has been recognized as interference of the three-dimensional CG object by the interference recognition unit 28 to a predetermined color. When the color data setting unit 34 sets the color data 14 to a predetermined color, the 3D CG object color display unit 36 uses the 3D object data stored in the 3D CG object data storage unit 10. A three-dimensional CG object based on certain three-dimensional shape data 12 and color data 14 is displayed on a three-dimensional CG display device (see, for example, FIG. 3). By doing so, the interfering three-dimensional CG object is displayed more emphasized than the other three-dimensional CG object in the three-dimensional CG space. The predetermined color is preferably set to a conspicuous color such as red.

  Next, a flow of displaying the 3D CG object with which the interference object display confirming means 38 interferes on the 3D CG space display device will be described (see FIG. 4). First, of the identification data output by the identification data output means 32, identification data to be confirmed in detail is selected. Then, the three-dimensional CG object based on the selected identification data is displayed on the three-dimensional CG space display device according to a predetermined viewpoint position and line-of-sight direction corresponding to the three-dimensional CG object.

Here, the predetermined viewpoint position corresponding to the three-dimensional CG object is the three-dimensional CG object displayed on the three-dimensional CG display device at the time of selecting the identification data of the interfering three-dimensional CG object. A certain distance (for example, a three-dimensional CG space) from the position of the interfering three-dimensional CG object that is on the line with the position of the three-dimensional CG object that is interfering with the viewpoint position that is being viewed (displayed) (2 m above) and a predetermined line-of-sight direction corresponding to the three-dimensional CG object is defined as the predetermined three-dimensional CG object from the predetermined viewpoint position corresponding to the three-dimensional CG object. Set the direction to go. By doing so, the interfering 3D CG object can be confirmed in more detail in the 3D CG space. Note that the viewpoint position is represented by an X coordinate, a Y coordinate, and a Z coordinate, and the line-of-sight direction is represented by an elevation angle and an azimuth angle.

The present invention checks by three-dimensionally calculating the presence or absence of interference in the three-dimensional CG space of three-dimensional CG objects related to pipes, ducts, equipment, and architecture displayed on the three-dimensional CG space display device, As a result of the check, it is possible to easily visually check the location that is determined to be interfering, so if you want to grasp the positional relationship between objects that are difficult to understand in 2D CAD drawings, It can be suitably used when it is necessary to have a common recognition among contractors working on equipment.

It is the figure which showed the structure of the three-dimensional CG object interference check system of the computer brought about by the three-dimensional CG object interference check program in embodiment of this invention. It is the figure which represented the process which displays the interfering 3D CG object in the embodiment of this invention on a 3D CG space display apparatus with the flow. It is an example figure which shows the state in which the interfering 3D CG object in the embodiment of the present invention is displayed on the 3D CG space display device. The figure which showed the flow of the process which displays the interfering 3D CG object in 3D CG space display apparatus according to the predetermined | prescribed viewpoint position and gaze direction corresponding to the said 3D CG object in embodiment of this invention. is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 3D CG object data storage means 12 3D shape data 14 Color data 16 3D CG object display means 18 Interference check execution means 20 Excluded object storage means 22 Surface data creation means 24 Interference determination means 26 Sleeve determination means 28 Interference recognition means 30 Identification data storage means 32 Identification data output means 34 Color data setting means 36 Three-dimensional CG object color display means 38 Interference object display confirmation means

Claims (1)

In a 3D CG object interference check program that causes a computer to function as a 3D CG object interference check system for checking the interference state of a 3D CG object representing a building facility in a 3D CG space,
3D CG object data storage means for storing and storing 3D shape data and color data of the 3D CG object in the computer;
3D CG object display means for displaying a 3D CG object on a 3D CG space display device based on 3D shape data and color data stored in the 3D CG object data storage means;
Interference check execution means for executing a check of the interference state of the three-dimensional CG object displayed on the three-dimensional CG space display device;
An excluded object storage means for storing a three-dimensional CG object to be excluded from a target for checking the interference state;
Surface data creation means for creating surface data of a 3D CG object excluding the 3D CG object stored in the excluded object storage means among the 3D CG objects displayed on the 3D CG space display device;
Interference judging means for judging interference between the surface data created by the surface data creating means;
When the interference determination unit determines that interference between the surface data is determined, a sleeve determination unit that determines whether or not the location of the interference is a sleeve;
An interference certifying means for certifying the interference location as an interference portion of a three-dimensional CG object when the sleeve determination means determines that the location of the interference is not a sleeve;
Identification data storage means for storing identification data which is information of an interference check result authorized by the interference authorization means;
Identification data output means for outputting the identification data stored in the identification data storage means;
Color data setting means for setting color data stored in the three-dimensional CG object data storage means of a three-dimensional CG object including the interference unit to a predetermined color;
When the color data is set to a predetermined color by the color data setting means, the three-dimensional CG object based on the three-dimensional shape data and the color data stored in the three-dimensional CG object data storage means is 3D CG object color display means to be displayed on the 3D CG space display device;
A selection of one of the identification data output by the identification data output unit is accepted and a selection corresponding to the three-dimensional CG object based on the identification data for which the selection has been accepted is accepted. Predetermined at a certain distance from the position of the interfering 3D CG object on the line between the viewpoint position displayed on the 3D CG space display device at the time and the position of the interfering 3D CG object A function including an interference object display confirmation unit that displays on the three-dimensional CG space display device in accordance with the viewpoint position and a predetermined gaze direction from the predetermined viewpoint position toward the interfering three-dimensional CG object. A three-dimensional CG object interference check program characterized in that: