KR100657402B1 - Implementing method of effect for user interface of mobile terminal using fluid-dynamics - Google Patents

Abstract

A method for implementing an effect for a user interface of a mobile terminal by using fluid dynamics is provided to considerably reduce an amount of calculation without degradation of a visualized effect quality. An entire screen for displaying hydrokinetic animation is divided into blocks with a small size in consideration of a visual effect and speed(S1). An animation effect is generated by using fluid-dynamics in a defined block(S2). A speed vector of a fluid in the block is obtained to determine a direction to move according to an input event of a user, movement is made while overlapping the blocks according to the determined direction, a block region before movement stops animation for a residual image effect and an image at the stopped state is displayed, the block after movement performs hydrokinetic animation, and a non-overlapping region of a previous block is cleared(S3-S7).

Description

Implementing Method of Effect for User Interface of Mobile Terminal using Fluid-dynamics

1 is a view for explaining a method of producing an effect such as smoke using fluid dynamics in the prior art;

2 is a view for explaining a method of effecting fluid dynamics over an entire region by overlapping only a partial region with time according to the present invention;

Figure 3 illustrates an operational flow diagram for creating an effect for a user interface using hydrodynamics in accordance with the present invention.

Figure 4 is a view explaining the hydrodynamic effects of the movement of the menu selected by applying the present invention

5 is an overall configuration diagram for implementing a user interface effect using a fluid dynamics in the mobile communication terminal according to the present invention;

The present invention relates to a method for implementing a graphical animation or effect in a mobile communication terminal through analysis and calculation through fluid dynamics such as water, fire and smoke.

In general, to simulate fluids such as water, fire and smoke with a computer, and to obtain a visualized effect, a so-called "Navier Stokes Equations" is used.

In order to solve this equation, a numerical method requiring a large amount of computation has been used, but the use of this equation has been limited due to such a large amount of computation.

In order to reduce the amount of calculation in another prior art for solving the problems of the prior art, as shown in Figure 1, the method of dividing the space into a constant cell (cell) and calculate the change over time of the speed and density at the center point in each cell In the prior art, the more the number of cells constituting the space, the more accurate the analysis result of the fluid according to the calculation result, and the higher the quality of the visualized effect. It is difficult to apply to a mobile communication terminal with poor computational performance.

 Therefore, in order to create a user interface that includes fluid dynamics effects in mobile terminals, such as mobile phones and PDAs, which are significantly less computational, there is a special method that can significantly reduce computations without seriously impairing the results of visualized effects. need.

SUMMARY OF THE INVENTION The present invention provides a method for implementing a graphical animation or effect in a mobile communication terminal through analysis and calculation through fluid dynamics in view of the above problems of the prior art.

In addition, the present invention provides a mobile communication terminal employing the method of applying the above user interface method, a method that can greatly reduce the amount of calculation without causing a significant degradation in the quality of the visualized effect.

In order to achieve the above technical problem, the present invention provides a method of executing a fluid dynamic animation corresponding to an event input by a user in a mobile communication terminal,

An initializing step of dividing the entire screen to display the hydrodynamic animation into blocks of small size in consideration of visual effects and speed;

Generating an animation effect using fluid dynamics inside the block defined in the initialization step;

According to user input events,

The direction of movement is determined by determining the velocity vector of the fluid inside the block, and the blocks are moved while overlapping the blocks according to the determined direction. The block area before the movement stops the animation for the afterimage effect and displays the image of the stopped moment. And the block after the movement performs a hydrodynamic animation, and thereafter, repeating the process of clearing the non-overlapping region of the previous block until the position determined by the user input event is reached. It is done.

Now, the configuration and operation of the present invention will be described in detail.

In the prior art as shown in FIG. 1, the entire space is divided into cells for the calculation of fluid dynamics, and the motion and velocity of the fluid in the entire space are identified through calculation of "Navier Stokes Equations" over time and visualized. do. At this time, the moving direction of the fluid is determined by the velocity vector as shown in the figure, which is determined by parameters such as external force applied to the fluid and boundary condition trapping the fluid.

At this time, the conventional method uses a method of constructing a cell for the entire space in which the fluid is confined, and calculating and tracking which velocity vector and density the fluid in the cell has over time.

However, the amount of computation increases and the memory usage increases as well.

Therefore, in the present invention, as shown in FIG. 2, the use of a small space in which the movement of the actual fluid occurs, rather than the entire space, minimizes unnecessary calculation and use of memory.

In addition, by applying the fluid dynamics to reduce the space of the cell to be calculated, if the effect of fluid movement in the whole space should occur, or to create a visual effect on the whole space, limited space as shown in FIG. By sliding along the direction of the velocity vectors that must move in superimposition, the effect is as if the fluid motion is simulated in the entire space. Figure 2 shows that the desired fluid motion can be shown by sliding a small space in the direction of the curved arrow overlapping.

3 is a flowchart illustrating a method of applying the present invention when a user needs to change a user's visual interface by receiving an input (key input or mouse input) from the mobile terminal as an event.

First, the area to display the effect, and the data structure of the cell to be used to create the effect is initialized (S1). In this initialization step, the entire screen area to display the fluid effect is divided into small blocks considering visual effects and speed, and a cell data structure for fluid dynamic calculation is set in the block. In this case, if the block size is too large, the speed may be slow, and if the block size is too small, the visual fluid effect may be small and the quality may be degraded. Therefore, the block size is set based on experimental data on the performance and visual effects of the terminal. .

Next, an animation effect is generated using hydrodynamics inside the initially defined block (S2).

Now, in this state, when receiving a user's input event for the user interface, the direction to move by obtaining the velocity vector of the fluids inside the block is determined using the parameters for configuring the user interface according to the event (S3).

The center point of the block is moved by dx and dy so as to overlap the block in a predetermined direction (S4). In this case, in the case of the area corresponding to the block before the movement, in order to maintain visual quality through the afterimage effect, the animation effect is stopped and the image of the stopped moment is displayed (S5).

The newly moved block generates an animation effect using hydrodynamics inside to display a new effect image (S6).

After that, the area of the non-overlapping portion of the previous block, which has left afterimages, is cleared to achieve an effect of naturally sliding the fluid (S7).

If the process of steps S3 to S7 is repeated until the center point of the block reaches the position to be moved by the user event, it corresponds to the event (key input, mouse input) input by the user. Hydrodynamic animation is achieved.

FIG. 4 is a diagram illustrating a method of forming a menu displayed on a screen of a mobile communication terminal using the present invention as described above. This is an example of embodying the visual effect of fluid flowing.

5 shows the overall configuration and operation of a mobile communication terminal for achieving the present invention as described above.

 When the user presses a key or mouse button of the mobile communication terminal, the phone hardware 1 transmits this key or mouse input to the phone OS 2.

The phone OS 2 analyzes the key input and delivers the analyzed input key to the UI application 4 through the user input API 3. At this time, the animation engine 5 supports fluid dynamics and generates a visual effect as in the present invention.

Meanwhile, the UI application 4 plays a role of interpreting the contents of the contents 6. Thus, the contents of the contents 6 are interpreted to constitute a user interface other than the hydrodynamic effects generated by the animation engine 5. You will be able to create a screen. The images thus made are synthesized in the UI application 4 and transferred to the phone OS 2 through the LCD control API 7 to be updated on the screen.

According to the present invention as described above, it is possible to provide an effect using fluid dynamics to a user interface in a mobile terminal having a low computational capacity and a lack of available memory.

Claims (7)

In the method for executing a hydrodynamic animation corresponding to an event input by a user in a mobile communication terminal, An initializing step of dividing the entire screen to display the hydrodynamic animation into blocks of small size in consideration of visual effects and speed; Generating an animation effect using fluid dynamics inside the block defined in the initialization step; According to user input events, The direction of movement is determined by determining the velocity vector of the fluid inside the block, and the blocks are moved while overlapping the blocks according to the determined direction. The block area before the movement stops the animation for the afterimage effect and displays the image of the stopped moment. And the block after the movement performs a hydrodynamic animation, and thereafter, repeating the process of clearing the non-overlapping region of the previous block until the position determined by the user input event is reached. And a fluid dynamic animation corresponding to an event input by a user in the mobile communication terminal. The method of claim 1, wherein the user input event is a key input. The method of claim 1, wherein the user input event is a mouse input. The method of claim 1, wherein the fluid dynamic animation uses a Navier-Stokes equation. 10. The method of claim 1, wherein the fluid dynamic animation corresponds to an event input by a user. The method of claim 1, wherein the mobile communication terminal is a mobile phone. The method of claim 1, wherein the mobile communication terminal is a PDA. The mobile communication terminal of claim 1, wherein the phone hardware 1 transmits the user input event to the phone OS 2, The phone OS 2 analyzes the user input event and delivers the analyzed user input event to the UI application 4 through the user input API 3. The UI application 4 interprets the content of the content 6 to produce an image constituting a user interface other than the hydrodynamic effect generated by the animation engine 5, The images thus made are synthesized in the UI application 4 and transferred to the phone OS 2 through the LCD control API 7 and updated on the screen. How to run the corresponding hydrodynamic animation.

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