JP2009271915A - Device for generating pseudo three-dimensional screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To generate a pseudo three-dimensional display image for simple overview representation which can display even an equipment symbol straddling equipment and floors without defining three-dimensional shape information. <P>SOLUTION: This pseudo three-dimensional screen generating device includes: a screen definition database for storing a plurality of pieces of symbol information having two-dimensional figure information representing a two-dimensional figure with a design and colors, and arrangement information including height information arranged in each of the two-dimensional figure information; a screen editing part for adding the symbol information to the screen database and editing the symbol information; and a figure coordinate conversion processing part for calculating a figure conversion parameter from the arrangement information and viewpoint information for three-dimensionally looking at an object in each of the symbol information, performing figure conversion of the figure conversion parameter with respect to the two-dimensional figures of the symbol information, sequentially overlapping the two-dimensional figures of the symbol information of the height information with a small value of the arrangement information and creating display information of a pseudo three-dimensional screen. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pseudo three-dimensional screen generation apparatus that artificially creates a three-dimensional image that three-dimensionally represents a layout in a building using a two-dimensional figure.

  In a conventional 3D screen generation device, a plurality of floors are displayed hierarchically, and an overhead view is generated by arranging fixtures and equipment on the floor, and the relationship between the floors and the layout within each floor are displayed. The list is displayed in a form close to the actual situation. Specifically, it is disclosed that a pseudo perspective view in which a plan view of each floor to be displayed is viewed obliquely from above is created, and the perspective views are hierarchically overlapped and displayed on the same screen (for example, Patent Document 1).

  Also, in other 3D screen generation devices, 3D shape information is used to clip the buildings on each site at the same constant height and display them in 3D, even for multiple buildings with different heights on the site. (For example, Patent Document 2).

JP-A-8-278996 JP 2006-350461 A

  The conventional three-dimensional screen generation device has a problem that it is impossible to display equipment symbols across equipment shapes and floors. In the method using the three-dimensional shape information, the three-dimensional shape information is required when performing the rough representation, and an operation of creating the three-dimensional shape information for each facility occurs. There was a problem that man-hours were required for the work process for defining the dimensional shape.

  The present invention has been made to solve the above-described problems. A pseudo three-dimensional display image for rough representation that can display equipment symbols across equipment and floors without defining three-dimensional shape information. Can be created.

  The pseudo three-dimensional screen generating apparatus according to the present invention includes a plurality of symbol information having two-dimensional graphic information representing a pattern or a colored two-dimensional graphic, and arrangement information including height information arranged for each of the two-dimensional graphic information. A screen definition database that stores the symbol information, a screen editing unit that adds the symbol information to the screen database and edits the symbol information, the placement information for each symbol information, and viewpoint information for viewing the object in three dimensions The figure conversion parameter is obtained from the symbol information, the figure conversion parameter is converted to the two-dimensional figure of the symbol information, and the two-dimensional figure of the symbol information having a small value of the height information of the arrangement information is sequentially overlapped. In addition, a graphic coordinate conversion processing unit for creating display information of the pseudo three-dimensional screen is provided.

  The present invention has an effect that a facility symbol across facilities and floors can be displayed three-dimensionally from an arbitrary viewpoint without defining three-dimensional shape information.

It is a figure which shows the structure of the pseudo | simulation three-dimensional display apparatus which shows Embodiment 1 of this invention. It is a figure which shows the difference in the expression by the kind of symbol and viewpoint position in Embodiment 1 of this invention. It is a table | surface which shows the setting item in the screen edit part of Embodiment 1 of this invention. It is a figure which shows the outline | summary of a process of the figure and coordinate system conversion process part of Embodiment 1 of this invention. It is a flowchart which shows the flow of a process of the figure and coordinate system conversion process part of Embodiment 1 of this invention. It is a flowchart which shows the flow of a process of the viewpoint calculation part of Embodiment 1 of this invention. It is a flowchart which shows the flow of a process of the symbol inclination calculation part of Embodiment 1 of this invention. It is a figure which shows the pseudo | simulation three-dimensional screen expressed by Embodiment 1 of this invention. It is a figure which shows the structure of the pseudo | simulation three-dimensional display apparatus which shows Embodiment 2 of this invention. It is a figure which shows the user interface component for a viewpoint position change in the screen operation process part of Embodiment 2 of this invention. It is a flowchart which shows the flow of a process of the screen operation process part of Embodiment 2 of this invention. It is a figure which shows the structure of the pseudo | simulation three-dimensional display apparatus which shows Embodiment 3 of this invention. It is a figure which shows the outline | summary of a process of the figure and coordinate system conversion process part of Embodiment 3 of this invention. It is a flowchart which shows the flow of a process of the display order process part of Embodiment 3 of this invention.

Embodiment 1 FIG.
FIG. 1 shows a configuration of a pseudo three-dimensional screen generation apparatus 2 according to Embodiment 1 for carrying out the present invention. In the figure, a pseudo three-dimensional screen generation device 2 is connected to a screen definition database (hereinafter referred to as “screen definition DB”) 3 in which display target parts are defined and a CRT screen display device 1 that displays a display target. Has been.

  The screen definition DB 3 stores two-dimensional graphic information that defines the two-dimensional graphic of the display target component. The two-dimensional graphic information represents a pattern including an image or a colored two-dimensional graphic. The stored two-dimensional graphic information is, for example, a text file described in an extended format of Scalable Vector Graphics, which is a two-dimensional vector image description language recommended by W3C. Here, it is assumed that the two-dimensional graphic information of the display target component is defined by a known method. The display target component is referred to as a “symbol”. The display target parts include building floors, wall surfaces, facilities, and the like.

  The symbols stored in the screen definition DB 3 include a floor symbol that represents a floor surface, a side symbol that represents a wall surface upright on the floor symbol, a slope symbol that represents an oblique surface with respect to the floor symbol, and a side surface There are four types of symbols, which are standard symbols that always face the viewpoint direction (front direction). In any of these four types of symbols, graphic conversion is performed on a plan view in a two-dimensional coordinate system (hereinafter referred to as “symbol coordinate system”) of the X axis and Y axis in which the symbols are defined, thereby The floor symbol is expressed as side, slope, and always in front. Here, the graphic transformation can be two-dimensional graphic transformation (two-dimensional affine transformation).

  FIG. 2 shows examples of four types of symbols. In the figure, how each symbol is displayed in the X′Y′Z ′ coordinate system (hereinafter referred to as “pseudo three-dimensional coordinate system”, where the Z ′ coordinate + direction is vertically upward) is shown. Further, in the figure, the left diagram shows how the display is performed before the viewpoint is moved, and the right diagram shows the display after being rotated about the Z ′ axis as the rotation axis.

  In the figure, the floor symbol 201 is a figure parallel to the X′Y ′ plane in the pseudo three-dimensional coordinate system. The side symbol 202 is a figure perpendicular to the X′Y ′ plane (parallel to the Z ′ axis), that is, a figure on a plane orthogonal to the floor symbol 202. The slope symbol 203 is a figure obtained by rotating the side symbol about a straight line (base) parallel to the X′Y ′ plane. The standard symbol 204 is a figure that is perpendicular to the X′Y ′ plane and is always parallel to the display screen.

  As described above, the conversion from the symbol coordinate system to the pseudo three-dimensional coordinate system is a graphic conversion only for coordinate movement for standard symbols. Symbols other than the standard symbols are rotated and tilted in addition to coordinate movement. The pseudo three-dimensional screen generation device 2 performs graphic conversion from the symbol coordinate system described in the screen definition DB 3 and realizes a pseudo three-dimensional expression by combining each symbol.

  In FIG. 1, a pseudo 3D screen generation device 2 includes a screen editing unit 4 that edits a symbol in the screen definition DB 3, and a graphic coordinate that creates a pseudo 3D screen from the symbol in the screen definition DB 3 and outputs it to the screen display device 1. And a system conversion processing unit 7. The graphic coordinate system conversion processing unit 7 performs processing using a symbol inclination calculation unit 5 that calculates the inclination of each symbol and a viewpoint calculation unit 6 that calculates graphic conversion of each symbol corresponding to the viewpoint position.

  The screen editing unit 4 edits symbol information stored in the screen definition DB 3. The screen editing unit 4 adds and deletes symbol information, and inputs and edits height information (Z ′ coordinate) and inclination information (inclination reference axis and inclination height) in the pseudo three-dimensional coordinate system. The screen editing unit 4 presents a user interface (graphical user interface (GUI), hereinafter referred to as “GUI”) screen for adding and deleting these symbols, inputting height information, and tilt information, and editing. The screen developer knows in advance the position and shape of each symbol and the Z coordinate set for that symbol, and inputs the above information and the like from the GUI. Information input, edited and set by the screen editing unit 4 is stored in the screen definition DB 3 as symbol information.

  FIG. 3 shows setting items for each symbol. As shown in the figure, there are five setting items for each symbol: “symbol type”, “graphic width”, “graphic height”, “Z coordinate”, and “inclination height”. The “symbol type” is an item for identifying four types of symbols that can be expressed by the pseudo three-dimensional device, and a value uniquely determined in the screen is input as the value of the “symbol type”.

  In addition, “graphic width” designates the width of a rectangular range in a two-dimensional graphic before conversion. Similarly, “screen height” designates the height of the rectangular range in the two-dimensional figure before conversion. “Z coordinate” designates the height (vertical relationship of each symbol) in the pseudo three-dimensional coordinate system. “Inclination height” designates the height in the pseudo three-dimensional coordinate system, specifically, the distance between the upper side and the lower side only when the symbol type is slope.

  Next, the graphic coordinate system conversion processing unit 7 creates a pseudo three-dimensional screen. First, the existing screen definition DB 3 is read, and symbol information is extracted and held. Next, the graphic coordinate system conversion processing unit 7 applies the graphic to the symbol inclination unit 5 and the viewpoint calculation unit 6 based on the viewpoint position registered in advance for the information of each of the plurality of symbols extracted from the screen definition DB 3. Let the conversion parameters be calculated. Next, the graphic coordinate system conversion processing unit 7 performs graphic conversion on the two-dimensional graphic of the symbol information based on the calculated graphic conversion parameter. After that, the converted 2D figure is overlapped in order from the 2D figure with the smallest height information (Z coordinate) of the symbol information, and all the 2D figures are overlapped to display information on the pseudo 3D screen. Create as. The graphic coordinate system conversion processing unit 7 outputs the created display information of the pseudo 3D screen to the screen display device 1, and the display information of the pseudo 3D screen is displayed on the screen display device 1.

  The symbol inclination calculation unit 5 targets a side symbol and a slope symbol, and sets parameters for graphic conversion (movement, rotation, inclination) from the image width, image height, and inclination height set as symbol information. calculate.

  The viewpoint calculation unit 6 calculates parameters for graphic conversion (movement, rotation, inclination) by using the position in the symbol coordinate system stored in the screen definition DB 3 and viewpoint information as input for each symbol.

  Next, the operation of the pseudo 3D screen generation apparatus 2 will be described. FIG. 4 is a diagram showing an outline of processing for converting symbol information stored in the screen definition DB 3 into pseudo three-dimensional screen display, taking an elevator in a building as an example. In the figure, it is shown that the image component information 401 for symbol expression, the information 411 stored in the screen definition DB 3, and the display information 421 of the pseudo three-dimensional screen are created in this order.

  In the example of FIG. 4, a staircase component 402 and a handrail component 403 are prepared as the image component 401 of the elevator. These image components 401 are texture images and areas with a two-dimensional shape with colors, such as a staircase component 402 and a handrail component 403.

  The screen editing unit 4 adds the image component 401 as a symbol to the screen definition DB 3 and adds information. The state stored in the screen definition DB 3 is shown in the information 411 stored in the screen definition DB 3. Here, in order to express the symbol coordinate system of each symbol, the X axis and the Y axis are added to the information 411 stored in the screen definition DB 3. Here, the setting items shown in FIG. 3 are defined with the staircase part symbol 414 corresponding to the step part of the elevator as a slope symbol and the handrail part symbols 412 and 413 corresponding to the left and right handrails as side symbols. ing.

  The graphic coordinate system conversion processing unit 7 creates display information 421 of the pseudo 3D screen by adding graphic conversion to each symbol of the information 411 stored in the screen definition DB 3, and displays the display information 421 of the pseudo 3D screen. Output to the screen display device 1. Here, X-axis, Y-axis, and Z-axis are added to the display information 421 of the pseudo-three-dimensional screen in order to express the pseudo-three-dimensional coordinate system. More specifically, the figure transformation is applied to the two-dimensional graphic of each symbol information of the information 411 stored in the screen definition DB 3 to obtain the staircase inclination symbol 424 and the handrail side symbols 422 and 423. Next, the display information 421 of the pseudo three-dimensional screen of the elevator is created by combining the slope symbol 424 of the stairs and the side symbols 422 and 423 of the handrail.

  Next, the operation of the graphic coordinate system conversion processing unit 7 will be described. FIG. 5 is a flowchart of the graphic coordinate system conversion processing unit 7. First, in step 501, the screen definition DB 3 created by the screen editing unit is read and expanded on the memory. Next, in step 502, symbols having the same Z coordinate value of the setting item are grouped from the read symbols of the screen definition DB 3 and stored in the memory.

  Step 503 determines whether the graphic conversion process has been completed for all groups. If the determination result is NO, the process of step 504 is advanced for unprocessed groups, and the process of step 504 is repeated until there are no unprocessed groups. Step 504 extracts one unprocessed group. Next, in step 505, it is determined whether the graphic conversion processing has been completed for all symbols in the group, and graphic conversion processing is performed until there is no unprocessed symbol. Specifically, if the determination result is NO, the process from step 506 onward is performed for unprocessed symbols in the group.

  Step 506 extracts one unprocessed symbol of the group to be processed. Next, in step 507, the viewpoint calculation unit 6 calculates the pseudo three-dimensional coordinates, the rotation angle of the graphic, the enlargement / reduction ratio, and the like necessary for graphic conversion, and stores them in the memory.

  Subsequently, in step 508, it is determined whether parameters necessary for graphic conversion are prepared. In this determination processing, when the symbol type is the side symbol or the inclination symbol, the determination result is NO if the inclination calculation has not been completed. In the case of floor symbols and standard symbols, the slope calculation is unnecessary, so the determination result is YES. If the decision result in the step 508 is NO, the step 509 calculates the parameters necessary for the graphic conversion, specifically, the rotation angle, the inclination angle, the enlargement / reduction ratio, etc. of the graphic by the symbol inclination calculation unit 5. The result is stored in the memory again in combination with the result of the viewpoint calculation unit 6. When step 509 ends, the process returns to step 508. In this case, the determination result is YES because the calculation of parameters has been completed in step 509.

  If the decision result in the step 508 is YES, a step 510 executes a graphic conversion process on the symbol and returns to the step 505. If the decision result in the step 505 is YES, the process returns to the step 503, and the process is repeated until the decision result in the step 503 becomes YES. If the decision result in the step 503 is YES, a step 511 creates display information for one pseudo three-dimensional screen by superimposing the groups in the order of the Z coordinate values. Finally, in step 512, the display information created in step 511 is output to the screen display device 1, and the process ends.

  Next, the operation of the viewpoint calculation unit 6 in step 507 will be described. FIG. 6 shows a flowchart of the viewpoint calculation unit 6. Step 601 extracts items set in the symbols delivered from the graphic coordinate system conversion processing unit 7 and stores them in the memory. Next, in step 602, the viewpoint position transferred from the graphic coordinate system conversion processing unit 7 is stored in the memory in the same manner as the symbol. A step 603 calculates a graphic moving distance and an enlargement / reduction ratio, which are parameters for graphic conversion, from the obtained viewpoint position and symbol setting items.

  In step 604, it is determined whether the parameter calculation related to the viewpoint calculation has been completed. If the symbol is a floor symbol, the determination result is NO. Subsequently, in step 605, parameter calculation for rotation processing is performed, and the calculated parameter is stored in the memory. If the decision result in the step 604 is YES, a step 606 acquires the graphic conversion parameter stored in the memory and returns the parameter to the graphic coordinate system conversion processing unit 7.

  Next, the operation of the symbol inclination calculation unit 5 corresponding to step 509 in FIG. 5 will be described. FIG. 7 is a flowchart of the symbol inclination calculation unit 5. Step 701 determines whether or not the symbol type set in the symbol delivered from the graphic coordinate system conversion processing unit 7 is for slope. If the determination result is NO, step 703 determines whether or not the symbol type is a side symbol. If the determination result in step 701 is NO, the process ends as it is.

  If the determination result in step 701 is YES (in the case of a slope symbol), step 702 is based on the viewpoint position delivered from the graphic coordinate system conversion processing unit 7 and the inclination height set for the symbol. The parameters of the inclination symbol are calculated and stored in the memory. Subsequently, in step 705, the value stored in the memory is returned to the graphic coordinate system conversion processing unit 7 and the process is terminated.

  If the decision result in the step 703 is YES (in the case of the side symbol), the step 704 calculates the symbol symbol symbol for the symbol inclination from the viewpoint position and stores it in the memory. Subsequently, in step 705, the value stored in the memory is returned to the graphic coordinate system conversion processing unit 7, and the process is terminated.

  As described above, when the processing of the graphic coordinate system conversion processing unit 7 is completed, the display information of the final pseudo three-dimensional screen as shown in FIG. 8 is output to the screen display device 1 and displayed on the screen display device 1. FIG. 8 shows a display example of the pseudo three-dimensional screen created in this way. As shown in the figure, various symbols on the floor including elevators and steps can be expressed, and a pseudo three-dimensional screen like a subway floor plan can be output.

  According to the first embodiment described above, by converting the texture image and the colored two-dimensional shape from the symbol setting items set in the screen editing unit 4 and the viewpoint information, the three-dimensional shape is expressed. Without using the three-dimensional shape information, it is possible to make a rough representation overlooking the inside of the building, and there is an effect that a floor configuration and guidance according to an actual situation can be implemented.

  In addition, according to the present embodiment, the pseudo 3D screen generation device 2 has the 3D shape information from the equipment representation image (image part 401) freely arranged on the plan view. Three-dimensional display can be performed. It is possible to express elevators, steps in the floor, etc., view the displayed pseudo 3D screen from various angles, and have the effect of being able to implement the floor configuration and guidance according to the actual situation.

  In addition, according to the present embodiment, an entrance / exit monitoring screen and a network management screen are created for each floor, and by inputting height information of each symbol, hierarchical display based on an overhead view is possible. This is effective in a display screen that does not require a precise representation of a three-dimensional object.

Embodiment 2. FIG.
The present embodiment describes an embodiment in which the viewpoint position can be changed on the pseudo three-dimensional screen displayed on the screen display device 1 in accordance with the screen operation of the screen viewer. This embodiment is realized by the pseudo 3D screen generation device 2 dynamically generating a pseudo 3D screen for each operation of the screen viewer.

  FIG. 9 is a diagram illustrating a configuration diagram of the pseudo three-dimensional display screen generation device 2 according to the present embodiment. In the figure, components corresponding to those in the first embodiment are given the same reference numerals, and are the same as those in the first embodiment. Specifically, the configuration similar to that of the first embodiment is the screen definition DB 3, the screen editing unit 4, the graphic coordinate system conversion processing unit 7, the symbol tilt calculation unit 5, the viewpoint calculation unit 6, and the screen display device 1. is there. In the figure, the screen operation processing unit 8 receives a screen viewer's viewpoint movement request from the screen display device 1, transfers the viewpoint position to the graphic coordinate system conversion processing unit 7, and creates a pseudo three-dimensional screen after the viewpoint movement. It is a mechanism to make a request to do.

  The screen operation processing unit 8 receives information from a screen operation graphical user interface component (hereinafter referred to as “screen operation GUI component”) that is displayed on the screen display device 1 and receives a viewpoint movement request. FIG. 10 is a diagram showing a pseudo three-dimensional screen displayed on the screen display device 1 and a screen operation GUI component shown for screen operation.

  In the figure, a pseudo three-dimensional screen 1002 and screen operation GUI components 1003 and 1004 are displayed on a screen 1001 of the screen display device 1. The screen operation GUI component 1003 is a user interface that moves the viewpoint up and down, and the screen operation component 1004 is a user interface that rotates the viewpoint in the horizontal plane with the Z axis as the rotation axis. The screen viewer changes the viewpoint and updates the pseudo three-dimensional screen 1002 by clicking each button of the GUI components 1003 and 1004 for screen operation.

  Next, the operation of the screen operation processing unit 8 will be described. FIG. 11 is a flowchart of the screen operation processing unit 8. First, the screen viewer operates the screen operation GUI components 1003 and 1004 shown in FIG. Then, the screen operation processing unit 8 receives viewpoint change information from the screen display device 1. Step 1101 determines whether or not the viewpoint position input from the screen operation GUI components 1003 and 1004 exceeds the upper and lower limit values. Since the left-right movement of the viewpoint is a rotation angle, upper and lower limits are not required. If the decision result in the step 1102 is YES, the process is ended as it is.

  If the determination result in step 1102 is NO, step 1103 calculates the viewpoint position and stores it in the memory. In step 1104, the graphic coordinate system conversion processing unit 7 is instructed to update the viewpoint position and create display information of the pseudo 3D screen. When this processing is completed and the graphic coordinate system conversion processing unit 7 outputs the display information of the pseudo 3D image to the screen display device 1, the pseudo 3D screen 1002 in the screen display device 1 is updated to the screen after the viewpoint is moved. Is done.

  According to the present embodiment described above, the viewpoint in the pseudo-three-dimensional screen once displayed is freely set, and the pseudo-three-dimensional screen generation apparatus 2 creates an image of the viewpoint at high speed and displays it on the screen display apparatus 1. Therefore, there is an effect that a three-dimensional display as if having three-dimensional shape information can be performed without having three-dimensional shape information. Therefore, it is effective for expressing a multi-viewpoint screen in destination guidance.

Embodiment 3 FIG.
In the embodiment described above, there is a possibility that a symbol that is originally hidden by a symbol in front from the viewpoint may not be displayed correctly. In this embodiment, in order to improve such a point, in the first or second embodiment described above, the graphic coordinate conversion processing unit converts the symbol information having the same value of the height information of the arrangement information into one symbol group. In the symbol group, the horizontal coordinate of the screen horizontal direction coordinates of the point of the center of gravity of the two-dimensional figure are arranged in order from the two-dimensional figure far from the center of the screen, and the barycentric point of the two-dimensional figure in the symbol group Are arranged in order from the two-dimensional figure having the smallest screen vertical coordinate value of the point after the figure conversion, and are superimposed in order from the symbol group having the smallest height information value of the arrangement information between the symbol groups. Display information is created.

  FIG. 12 shows a configuration of the pseudo 3D screen generation apparatus 2 in the present embodiment. Here, what attached | subjected the code | symbol same as the code | symbol of the above-mentioned embodiment represents the corresponding thing. As in FIG. 1, the pseudo three-dimensional screen generation device 2 is connected to a screen definition database 3 in which display target components are defined and a CRT screen display device 1 that displays a display target. Further, the pseudo 3D screen generation apparatus 2 includes the above-described screen editing unit 4, a graphic coordinate system conversion processing unit 7 that creates a pseudo 3D screen from symbols in the screen definition DB 3, and a symbol based on the coordinates of each symbol. And a graphic order processing unit 8 for exchanging the front-rear relationship.

  FIG. 13 is a flowchart of the graphic coordinate system conversion processing unit 7 of the present embodiment. Basically, step 511 which is processing related to the graphic order processing unit 8 is added to the flowchart of FIG. 5 described above, and other steps are the same as described above. In the figure, step 511 changes the order of symbol groups having the same Z coordinate value delivered from the graphic coordinate system conversion processing unit 7.

  FIG. 14 shows a processing flow of the display order conversion unit 9 in step 511. Step 801 determines whether or not the order change process has been completed for each symbol group. If the determination result is NO, the process of step 802 is performed. Step 802 rearranges the symbols so that the floor symbols in the group are at the back. When there are a plurality of floor symbols, the plurality of floor symbols are arranged on the back side, and the order created by the screen editing unit 4 is maintained.

  Next, in step 803, with respect to symbols other than the floor symbol, the symbol coordinates are changed so that the X coordinate of the center of gravity of the two-dimensional graphic of each symbol after the graphic conversion is close to the center of the display screen. Change the order. Here, the barycentric point is the sum of the vertex coordinates of the two-dimensional figure for each of the X and Y coordinates, and the value obtained by dividing the sum by the number of vertices is the X and Y coordinates.

  Next, in step 804, the order of the symbols is changed so that the Y coordinate value after the graphic transformation of the barycentric point of the two-dimensional graphic of each symbol is close to the bottom of the display screen comes to the front. Return. If the symbol replacement process is completed for all symbol groups (YES in step 801), the process proceeds to step 805. In step 805, the symbol group having a large Z coordinate value of each symbol group is replaced in units of symbol groups so that the symbol group comes to the front, and the processing is ended.

  The above is sorted by the X coordinate after graphic conversion, and further rearranged by the Y coordinate value after graphic conversion. You may rearrange in order with the long distance from a certain point.

  In addition, according to the present embodiment, the display order processing unit 9 rearranges the display context, so that it is possible to create a pseudo 3D screen that has been subjected to hidden surface processing using 3D data. Further, since the processing of the three-dimensional shape data is not performed, there is an effect that it is possible to reduce a calculation amount necessary for reproducing the three-dimensional shape such as a hidden surface processing.

  1 screen display device, 2 pseudo 3D display device, 3 screen definition, 4 screen editing unit, 5 symbol tilt calculation unit, 6 viewpoint calculation unit, 7 graphic / coordinate system conversion processing unit, 8 screen operation processing unit, 9 display order Processing part.

Claims (3)

A screen definition database for storing a plurality of symbol information having two-dimensional graphic information representing a pattern or colored two-dimensional graphic, and arrangement information including height information arranged for each of the two-dimensional graphic information;
Adding the symbol information to the screen database and editing the symbol information;
For each symbol information, figure conversion parameters are obtained from the arrangement information and viewpoint information for viewing the object in three dimensions, the figure conversion parameters are converted to the two-dimensional figure of the symbol information, and the arrangement is performed. A pseudo three-dimensional screen generation apparatus comprising: a graphic coordinate conversion processing unit that generates display information of a pseudo three-dimensional screen by sequentially superimposing the two-dimensional graphics of the symbol information having a small value of information height information. A screen definition database for storing a plurality of symbol information having two-dimensional graphic information representing a pattern or colored two-dimensional graphic, and arrangement information including height information arranged for each of the two-dimensional graphic information;
Adding the symbol information to the screen database and editing the symbol information;
For each symbol information, figure conversion parameters are obtained from the arrangement information and viewpoint information for viewing the object in three dimensions, the figure conversion parameters are converted to the two-dimensional figure of the symbol information, and the arrangement is performed. The symbol information having the same information height information value is defined as one symbol group, and the two-dimensional coordinate in which the screen horizontal coordinate of the point after the graphic transformation of the barycentric point of the two-dimensional graphic in the symbol group is far from the screen center. Arranged in order from the figure, and arranged in order from the two-dimensional figure having the smallest screen vertical coordinate value of the converted point of the center of gravity of the two-dimensional figure in the symbol group, the height of the arrangement information between the symbol groups A pseudo 3 including a graphic coordinate conversion processing unit that creates display information of a pseudo 3D screen by superimposing symbols in order from a symbol group having a small information value. The original screen generating apparatus. 2. A screen operation processing unit that changes viewpoint information according to input information and causes the graphic coordinate system conversion processing unit to create display information of a pseudo three-dimensional screen with new viewpoint information. 3. The pseudo three-dimensional screen generation apparatus according to 2.

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