JPH06110868A - Three-dimensional simulation system and graph display method - Google Patents

Abstract

PURPOSE:To easily designate a position in the shape displayed as a graph by enabling an observer to arbitrarily select a position of analysis result evaluation at the time of displaying the graph of the analysis result of the three- dimensional complicated shape obtained by a computer. CONSTITUTION:Pictures of an analysis area 7 viewed in plural directions which include a picture 4 viewed from a virtual search machine 8 and a picture 2 viewed from the observer are displayed in multiple windows, and the search machine 8 is moved to a designated position on the picture, and its present position 8a and locus 9 are displayed on the picture, and information 11 to 15 used for physical quantity calculation in respective positions on the locus are stored, and physical quantities are calculated and are displayed as a graph 10 on the locus after the end of movement of the search machine 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a display method for drawing analysis data by a computer, and more particularly to a three-dimensional simulation system and a graph display method for easily displaying an analysis result of a three-dimensional complex shape as a graph.

[0002]

2. Description of the Related Art Conventionally, numerical simulation has been used for predicting the flow performance of fluid equipment and the thermal performance of electronic equipment, and is a very effective method together with experiments. But,
The numerical simulation result data is an enumeration of numerical values, and it is difficult to grasp physical phenomena from this and predict the performance of products such as fluid devices and electronic devices. Therefore, computer visualization has been performed conventionally to facilitate the evaluation of numerical simulation results. In this visualization technology, there is a graph display in which the physical quantity is represented by a broken line, etc. Normally, when interactively specifying the position within the shape to be displayed in the graph, the calculation points (nodes) that represent the analysis area are represented.
The graph can be displayed only at this position. For example, when the physical quantity between the line segments 46 connecting the calculation points 41 and 45 in the simple shape 40 as shown in FIG. 2 is displayed as a graph, the points 41 and 45 indicated by a marker with a pointing device or the like are designated. . The graph displayed at this time is a graph in which the physical quantities at the calculation points 41 to 45 existing between the line segments 46 are connected by broken lines, as shown in FIG. In such a method, the positions cannot be specified unless the calculation points are displayed as markers, and when all the calculation points are displayed as markers, the markers overlap each other and are very difficult to see, and it is not easy to specify the correct position. To avoid this,
It is conceivable that only the calculation points on the outer frame are displayed as markers to narrow the range that can be specified, but if the shape is complicated, the number of markers will increase, and position specification will be difficult as in the above case. Also, due to recent advances in the performance of computers, the computational area that can be analyzed has become large, making it possible to model even complex shapes. Normally, when the analysis area is displayed on a display device or the like, it is displayed at an angle in a fixed direction viewed from the point at infinity. For example, if the shape is a rectangular parallelepiped or some unevenness as shown in FIG. 2, the position to display the graph can be easily specified, but the shape is complicated and complicated, and there are many obstacles and the back side is difficult to see. In this case, it is difficult to see the display in a fixed direction, and it becomes difficult to specify the position where the graph is displayed.

[0003]

In the above-mentioned prior art, 3
When interactively displaying a three-dimensional analysis result in a graph, the position in the shape that displays the graph is limited to the position that represents the analysis region, so it is difficult to display all the places that the observer wants to evaluate. There's a problem. In addition, when a shape is displayed when viewed from a certain direction, such as in the case of a complicated three-dimensional shape or when there are many obstacles, it is difficult to specify the position within the shape to be displayed in the graph, and many designations are required. There is a problem that it takes time and makes an incorrect input. An object of the present invention is to improve such a problem and allow the observer to arbitrarily select a place where the analysis result is evaluated and to easily specify the position within the shape to be displayed in the graph. A system and a graph display method are provided.

[0004]

In order to achieve the above object, a three-dimensional simulation system of the present invention includes a processing device, an input device, a display device having a multi-window function, and an analysis area in a three-dimensional space. Moving, measuring the physical quantity at any position in the area, and a search means (virtual searcher) for displaying the field of view in the traveling direction, and the processing device, a means for moving the searcher, Means for displaying a plurality of screens including a first screen when the analysis area is viewed from a predetermined direction, a second screen when viewed from a direction different from that direction, and a third screen viewed from the searcher, and a current position of the searcher. Means for displaying on the first and second screens with a marker or the like, a means for displaying the trajectory of the searcher as a line on the screen, and a means for calculating a physical quantity at an arbitrary position on the trajectory. It is characterized in that the physical quantity in that a means for displaying the graph on the trajectory. Also,
According to the graph display method of the present invention, when interactively displaying a three-dimensional numerical simulation result in a graph, analysis regions viewed from a plurality of directions including the direction viewed from the searcher and the line of sight of the observer are displayed in a multi-window display. Then, the searcher is moved to the specified position on the screen, its trajectory is displayed on the screen, and the information used to calculate the physical quantity at each position on the trajectory is stored in advance. After the end, the feature is that the physical quantity is calculated and displayed on the trajectory as a graph.

[0005]

In the present invention, when the physical quantity in the three-dimensional analysis area is displayed as a graph, a screen in which the analysis area is viewed from a plurality of viewpoints is displayed, and a virtual searcher capable of measuring physical data is moved, Specify the position interactively. As a result, even in a complicated shape or a shape having many obstacles, which has been difficult in the past, it is possible to easily specify the portion to be inspected and display it in a graph while easily grasping the shape.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a configuration diagram of a three-dimensional simulation system according to an embodiment of the present invention. In FIG. 4, 20
Is a computer, 21 has a multi-window function,
A display device capable of displaying a graphic, and 22 is an input device such as a pointing device or a keyboard. Also,
The computer 20 sends a signal of display data to the display device 21, sends a signal of input information from the input device 22 to the computing unit 24, and a storage unit 25 that stores analysis data and data necessary during processing. And an arithmetic unit 24 for performing various arithmetic operations.

Next, a method of displaying the three-dimensional simulation result in this embodiment will be described. FIG. 1 is a display example diagram of a three-dimensional simulation result in one embodiment of the present invention. In FIG. 1, 1 is a display device 2
1 is a display screen, 2 is a screen in the direction in which the analysis area 7 is viewed from an observer, 3 is a screen in which the analysis area 7 is viewed from above in order to clarify the position of the searcher 8, and 4 is a searcher. 8 is a screen showing the direction of travel, 5 is a screen showing a three-dimensional simulation result in a graph, and 6 is a screen showing the current position of the searcher 8.
A screen that numerically represents the coordinate value 11 of the three-dimensional space, the velocity 12 of the air flow, the pressure 13, the temperature 14, the concentration 15, etc., 7 is the analysis region to be the target of the three-dimensional simulation, 8 is a marker indicating the searcher, and 8a is , A marker indicating the position of the searcher on the screens 2 and 3, 9 is a line indicating the path traversed by the searcher 8,
10 is a physical quantity at an arbitrary point on the line 9 (for example,
3 is a three-dimensional graph 10 displaying a result of simulating a situation such as airflow, temperature, and air pollution in a city by a computer 20. It should be noted that the searcher 8 of the present embodiment implements the function of moving a three-dimensional space arbitrarily, measuring a physical quantity at an arbitrary position in the space, and projecting a visual field like a camera by software using a computer program. It is not a real device. In this embodiment, drawings 2 to 6 are displayed on the screen 1 of the display device 21, and the searcher 8 is moved on the screen by operating the input device 22,
The line 9 for displaying the graph 10 is designated while observing the shape of the analysis region 7.

Next, the display procedure of the three-dimensional simulation of this embodiment will be described. FIG. 5 is a flowchart showing the processing of the three-dimensional simulation system according to the embodiment of the present invention. In this embodiment, first, the searcher 8
In the initial state before moving the, the view point of the searcher 8 is displayed on the screen 2 in the direction viewed from the observer, and the view point of the screen 3 provided for clarifying the position of the searcher 8 is the same. Determined from the input device 22 and displayed (50
1). Next, in order to determine the position of the graph display target in the analysis area 7, while watching the screens 2 to 4, the input device 22 is operated to move the searcher 8 in the analysis area 7 (502, 50).
3) Display the position of the searcher 8 on each screen (504, 5
05). For example, the marker 8a displayed on the screens 2 and 3
Is also moved and displayed according to the procedure operated by the input device 22. Similarly, on the screen 4, the diagram of the analysis area 7 in the direction viewed from the searcher 8 is switched. In this way, in the process of moving the searcher 8 to the place where the physical phenomenon is to be investigated, the tracking process is performed every time it moves so that the physical quantity at the position of the searcher 8 can be measured (506), and the search is performed on the screen 5. The trajectory of the machine 8 is displayed on the line 9 or the like (506). This tracking process is a process of extracting necessary information and storing it in the storage unit 25 in the process of calculating the physical quantity at an arbitrary point. In this way, when the position where the physical phenomenon is to be investigated is determined, the movement of the searcher 8 is ended (508), and the input device 22 instructs the control unit 22 to display the graph 10. As a result, the calculation unit 23 extracts the information stored in the above-described tracking process from the storage unit 25, calculates the physical quantity at an arbitrary point on the line 9 that the searcher 8 has passed through (509), and then displays the graph 10 on the screen 5. Is displayed (51
0).

Although the graph 10 is displayed in the three-dimensional space in this embodiment, it may be displayed in the two-dimensional space for easy viewing. Also, in the process of moving the searcher 8, the coordinate 1 of the three-dimensional space at this position is
If you want to check 1 or numerical value as needed, input device 22
It is also possible to input a display operation and display it on the screen 6. Further, when the graph 10 is displayed, for example, a method of displaying each data in different colors or displaying numerical values can be considered. Further, the numerical display method of the screen 6 can be either digital or analog. According to the present embodiment, it is possible to easily specify and display a graph display position in a complicated shape that has been difficult in the past without grasping the shape and limiting the position.

[0010]

According to the present invention, even if a complicated shape or a shape having many obstacles, which has been difficult in the past, the shape can be obtained by the observer arbitrarily moving the searcher to virtually enter the three-dimensional area. It is possible to easily specify the display position while grasping, and to grasp any physical phenomenon in a short time.

[0011]

[Brief description of drawings]

FIG. 1 is a diagram showing a display example of a three-dimensional simulation result according to an embodiment of the present invention.

FIG. 2 is a diagram showing analysis areas and positions of a conventional three-dimensional simulation.

FIG. 3 is a display example diagram of a conventional three-dimensional simulation result.

FIG. 4 is a configuration diagram of a three-dimensional simulation system according to an embodiment of the present invention.

FIG. 5 is a flowchart showing the processing of the three-dimensional simulation system in one embodiment of the present invention.

[Explanation of symbols]

 1 Display screen 2 Screen of analysis area viewed from observer 3 Screen of analysis area viewed from another perspective 4 Screen of analysis area viewed from searcher 5 Screen displaying analysis results in graph 6 Screen displaying physical data 7 Analysis Area 8 Search machine 8a Marker display of search machine 9 Trajectory line of search machine 10 Graph 11 Coordinate value of search machine position 12 Air velocity of air 13 Air pressure 14 Air temperature 15 Air concentration 20 Computer 21 Display device 22 Input device 23 control unit 24 arithmetic unit 25 storage unit 40 analysis shape 41 calculation point 42 calculation point 43 calculation point 44 calculation point 45 calculation point 46 line segment

Claims (2)

[Claims] 1. A system comprising a processing device, an input device, and a display device having a multi-window function, which interactively displays a graph of a three-dimensional numerical simulation result by moving an analysis region in a three-dimensional space, A search means for measuring a physical quantity at an arbitrary position of the area and displaying a field of view in the traveling direction is provided, and the processing device has means for moving the search means and a first screen when the analysis area is viewed from a predetermined direction. A means for displaying a plurality of screens including a second screen viewed from a direction different from the direction and a third screen viewed from the searching means, and displaying the current position of the searching means on the first and second screens. Means, means for displaying the trajectory that the search means has passed on the screen, means for calculating a physical quantity at an arbitrary position on the trajectory, and a graph showing the calculated physical quantity on the trajectory. A three-dimensional simulation system comprising: means for indicating. 2. A method of interactively displaying a three-dimensional numerical simulation result in a graph, moving an analysis region in a three-dimensional space, measuring a physical quantity at an arbitrary position of the region, and displaying a visual field in a traveling direction. The search area, the analysis area viewed from a plurality of directions including the direction viewed from the search means and the line of sight of the observer is displayed in a multi-window, and the search means is moved to a designated position, and the search is performed. While displaying the trajectory that the means has passed on the screen,
A graph display method characterized in that information used for calculating a physical quantity at a position on the locus is stored, and after the movement of the searching means, the physical quantity is calculated and displayed on the locus as a graph.