JPS61199170A - Graphics generating device - Google Patents

Abstract

PURPOSE:To attain graphics display and high speed processing for a shapeless event by providing plural memories storing two event data, a memory storing output event data, an interpolation means and an intermediate color display memory. CONSTITUTION:Two events P1, P2 are stored in memories 1, 2 and picture element information of the events P1, P2 is inputted to the interpolation means 4 via transfer lines 14, 24. The means 4 generates an intermediate color from the picture element information and writes the result to a picture element corresponding to the even P in the memory 3. In generating the intermediate color, the means 4 references the intermediate color table in a memory 5 for the intermediate color table via a transfer line 54. In this case, the mixture rate of the events P1, P2 is used, the intermediate color table is indexed and the calculation is executed by linear calculation. Thus, the calculation to all picture element of the event P is executed and the graphics display is applied. Thus, the graphics display for shapeless event such as fluid or gas is attained and also a high speed processing is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to field representation in graphics displays.

(Prior Art) Graphics are powerful for displaying numerical calculation results and are becoming more commonly used. However, graphics are currently produced using CAD (Co-computer a).
Since it has been developed for applications such as ``ideal design'', emphasis is placed on expressing solid objects (things that have shape).

(Problems with conventional technology) Conventional graphics mainly focus on expressing solid objects, so much research and development has been focused on expressing shapes. but,
In numerical simulation, the targets of numerical calculation are often representations of intangible objects such as energy, potential fields, fluids, and gases, and until now, graphics figures have been generated for each field.

(Object of the Invention) An object of the present invention is to provide a method for expressing an intangible field in graphics, and to simplify creation.

Another object of the present invention is to provide hardware that can process field expression techniques at high speed, and to increase the speed.

(Principle of the Invention) Next, the present invention will be explained in detail. Now consider a one-dimensional space. A field phenomenon (for example, potential) that depends on a certain i is expressed as pi. The field phenomenon due to all i is P
Then, P can be written as ΣiPi. Here, Σ1 is an operator representing mixing. Here, each phenomenon at a certain position j is expressed as plfj). The phenomenon at position j is Σ1
pifj). The problem is that it is necessary to make each mixture of Σ1pi(j+ intuitively clear by distinguishing colors on the graphic. For example, if the phenomenon of i is 1 is white, and the phenomenon of i is red is p,=Q,5 ,p,=
For Q and 5, the color is pink, the smaller pt is, the closer to white it is, and the smaller p is, the closer it is to red. However, the visual color of exactly half red and white depends on each display device. Here, the color for each color mixture is stored in the memory, and the corresponding color is outputted according to the mixture ratio. Note that the color for this mixing ratio depends not only on the display device but also on the individual, so these values must be determined through experiments. Furthermore, since these values appear numerically apart from each other with the mixing ratio, an interpolation function is required.

It is assumed here that this interpolation is performed using linear approximation.

(Embodiment) FIG. 1 is a functional block diagram showing an embodiment of the present invention. Here we consider the representation of a two-dimensional field. The two events p and p are stored in memory 1. Stored in memory 2.

The interpolation means 4 obtains pixel information 1 e and e of the respective events p and p via the transfer line 14 24 . The interpolation means 4 has addressing means (not shown) and sequentially obtains pixel information. For each pixel, the interpolation means 4 generate an intermediate color and write it to the corresponding pixel e of the event P in the memory 3 via transfer #43. When generating an intermediate color, the interpolation means 4 refers to the intermediate color in the memory 5 via the transfer line 54. At this time, the features of p and p.

Subtract the intermediate colored garment using f and f and the mixing ratio g. This method of subtraction selects a table using ft and f, gives g and obtains two values close to g (h, take).

For this pair, perform interpolation to calculate h corresponding to g. This calculation is performed using a linear calculation. In this way, P
The value of h for all pixels of is calculated and a graphical display is performed. This calculation can be performed in parallel for all pixels, and is also characterized by the ability to perform parallel processing.

(Effects of the Invention) According to the present invention, it is possible to provide a display device that can flexibly display graphics of intangible events such as representations of fluids, gases, or fields, and can also perform high-speed processing.

Note that memory 1. Memory 2. The memory 5 can also be a common memory.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing one embodiment of the present invention. In the figure, 1...memory for event p1, 2...memory for event p, 3...memory for output event p, 4...interpolation means,
5... Indicates each memory of intermediate color clothing. Deputy Adviser 11 Susumu Hara

Claims (1)

[Claims] a first memory and a second memory that store two event data; a third memory that stores event data for output; and receiving event data from the first and second memories;
A graphic comprising: interpolation means for generating an intermediate color when the events are superimposed and storing the result in the third memory; and an intermediate color memory for supplying intermediate color data to the interpolation means. gas generator.