JPS63282885A - Simulating animation drawing system - Google Patents

Abstract

PURPOSE:To obtain a smooth animation by once transferring the contents of a disk from the disk to a main memory by means of a main memory in a computer and reading out the contents from the main memory to display them. CONSTITUTION:An external memory means 1 stores the data of a structure obtained by oscillation analysis, an internal main memory means 2 is utilized as a main memory in the computer and an auxiliary memory means 3 is utilized as a buffer. A control means 4 commands data transfer from the means 1 to the means 2 and data transfer from the means 2 to the means 3. Data such as the oscillation analysis of the structure previously stored in the means 1 are previously and temporarily stored in the means 2 when the means 2 is not used and the data is displayed from the main memory means through the auxiliary memory means. Since the data transfer time necessary for animation is set between the means 2 and 3, the smooth animation can be obtained.

Description

[Detailed Description of the Invention] [Summary] In the method of drawing the simulation results by Combi 1-Y as a moving image, the main memory of the computer is used to temporarily transfer the contents of the disk from the disk to the main memory. A smooth moving image can be obtained by reading the image from memory and displaying it.

[Industrial application field]

The present invention relates to a method for rendering a moving image of simulation results by a computer, and particularly relates to a method for rendering a moving image when a computer is used to analyze the vibration of a structure or the like to analyze changes over time and then display the result as a moving image.

[Prior art and problems to be solved by the invention] Conventionally, methods for analyzing vibrations of structures such as motor housings include the finite element method and the boundary element method. Simulation analysis is performed. The temporal change of the analyzed structure is displayed as a moving image on the display, but when observing it visually, it is necessary to speed up this temporal change appropriately, that is, to make the movement of the moving image smooth. This makes vibration analysis of structures easier to understand (and simulations more effective).

FIG. 4 is a schematic diagram of an apparatus configuration for a conventional computer-based simulation animation drawing system. In the disk D as an external storage device, each time t=0,
Data obtained by computer simulation of changes in the shape of the structure every 0.1, 0.2, . . . n sec is stored. That is, the shape for each time period is stored on the disk. In order to display this shape data on the display DP, when a read command is issued from the computer C to the disk D, the contents at each time t are transferred from the disk D to the computer C at a predetermined transfer time T, and then the computer C empty display D
They are sequentially displayed on P. In this case, the transfer time T from the disk D to the computer C is not a problem with models that can be transferred very quickly, but depending on the model, a transfer time of 2 to 3 seconds is required for one screen change. There is also. Such a system has the disadvantage that the motion as a moving image is very slow, making it difficult to understand the motion.

An object of the present invention is to obtain a moving image with sufficiently fast movement in a system with a slow transfer time as described above.

[Means and operations for solving the problems] FIG. 1 is a block diagram of the principle of a simulation moving image drawing method according to the present invention. In Figure 1, 1 is an external storage means that stores data of the structure obtained through vibration analysis, and 2 is an internal main storage means, which is used as the main memory inside the computer. 3 is an auxiliary storage means used as a buffer; 4 is a control means for instructing data transfer from the external storage means 1 to the internal storage means 2 and further data transfer to the auxiliary storage means 3; It is something to do. In such a configuration, the method of the present invention utilizes data such as vibration analysis of a structure stored in the external storage means 1 in advance, while the internal main storage means 2 is not in use. The data is temporarily stored in advance in advance and displayed from the main memory means via the auxiliary memory means.As a result, the data transfer time required for the moving image is Tt between the main memory means 2 and the auxiliary memory means 3, resulting in smooth moving images. This is something that can be obtained.

〔Example〕

FIG. 2 is a schematic block diagram of an embodiment of the simulation moving image drawing method of the present invention. The same contents as shown in FIG. 4 are stored on the disk D as an external storage means. M is a main memory as an internal main storage means. This memory cannot be used for this method when it is being used for calculations, but it can be used when it is free and not in use.

That is, it is used as a memory for drawing moving images when it is not being used for anything else. In this case, the main memory is divided into memory blocks 1 to mn corresponding to the contents of the disk, and the contents of the disk are stored in the corresponding blocks. B is a buffer memory as an auxiliary storage means, and is a buffer memory for graphics. The CT is a controller that controls data transfer from the disk to the main memory, data transfer from the main memory to the buffer memory, and the like. The main memory M1, buffer memory B1, controller CT, etc. are provided inside the computer C. Data is transferred from the buffer memory to the display DP and displayed.

As described above, data transfer from the disk to the main memory is performed in advance when the main memory is free. The information is then displayed on the display by reading it out from the main memory at high speed. Since the data transfer time T□ from the main memory to the buffer memory is much faster than the conventional data transfer time Tt from the disk to the display, the motion of the moving image can be made smooth.

FIG. 3 is a processing flowchart of the present invention.

First, data such as vibration analysis is stored in advance on the disk (step 31).Next, it is determined whether the main memory of the computer is free and usable (step 32).
). If it is not available (No), it will wait until it becomes available. If it can be used (YES), then the contents of the disk are transferred to the corresponding block of the main memory according to a command from the controller (step 33). Then, the contents of the main memory are sequentially transferred block by block to the buffer memory according to instructions from the controller (step 34) and displayed on the display (step 35).

〔Effect of the invention〕

As described above, according to the present invention, even in a system with relatively slow data transfer, smooth moving images can be obtained by using the main memory, and simulations can be performed effectively.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of the present invention, FIG. 2 is a schematic block diagram of an embodiment of the present invention, FIG. 3 is a processing flowchart of an embodiment of the present invention, and FIG. 4 is a conventional schematic block diagram. (Explanation of symbols) D...Disk, B...Buffer memory, M...Main memory, DP...Display, CT...Controller, C...Computer.

Claims (1)

[Claims] 1. In a computer-based animation drawing method for simulation results, an external storage means for storing data analyzed by a computer in advance, an internal main storage means for temporarily storing data in the external storage means, and an internal main storage means for temporarily storing data in the external storage means. auxiliary storage means for sequentially transferring data to the display means; control means for controlling data transfer from the external storage means to the internal main storage means and from the internal main storage means to the auxiliary storage means; A simulation animation drawing method characterized in that data is transferred from the external storage means to the internal main storage means when the storage means is not in use, and data is read out from the internal main storage means and displayed.