JPH05216944A - Display control system for cad - Google Patents

Abstract

PURPOSE:To freely control the display/non-display of an arbitrary type of elements for each window and to improve the efficiency of preparing graphics. CONSTITUTION:An input device 1-1 inputting data required for preparing the graphics an input control means 1-2 performing an input request and the analyzation of input data, a command control means 1-3 controlling each command, a command processing means 1-4, a work data management means 1-5 managing work data, a display device 1-6 displaying the graphics, a display control means 1-7 provided with a display control function controlling the type of graphics to be displayed for each window, and a display data management means 1-8 managing display data added with a display control information to be used in the display control function, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD display control system, and more particularly to a display control system for each window in a multi-window state.

[0002]

2. Description of the Related Art In the field of CAD display control processing, a primitive is displayed / not displayed for each window in a step of creating a figure in a multi-window state and a step of modifying a created figure. You need to control the display. For example, in the work window where input is actually performed using an input device such as a mouse, only the primitives required for input are displayed in order to improve work efficiency, and in other windows, the entire layout can be examined. , Display all primitives.

The conventional CAD display control process of this type is as follows.
In the multi-window state, by managing the display data with the structure shown in FIG. 2 for each window,
The display / non-display of primitives for each window was controlled by the following method.

First, the window information 2-1 has a filter number for each window, and the primitive data 2-2 manages the filter information (bit information). Here, the filter number of the window information 2-1 corresponds to the bit position of the primitive data 2-2, and the primitive is drawn only in the window corresponding to the bit whose value is "1". The current filter information 2-3 manages the filter information to be registered in the primitive data 2-2 at the time of primitive registration.

By managing the data as described above, the display / display of an arbitrary primitive in a certain window is performed.
The non-display control is performed by turning ON / OFF the corresponding bit position in the filter information of the primitive data 2-2.

For example, in a state where four windows are displayed, the bit position "1,3" of the filter information of the primitive data 2-2 is "1" and "2,4" is "0".
Then, the element was displayed in the windows 1 and 3 and was hidden in the windows 2 and 4.

Further, when the primitive is registered, control of display / non-display of the primitive for each window is performed by ON / O of the corresponding bit position of the current filter information 2-3.
It was controlled by FF.

For example, when four windows are displayed and the bit positions "1, 3" of the current filter information 2-3 are "1" and "2, 4" are "0", they are registered thereafter. The primitives to be displayed were displayed in windows 1 and 3 and hidden in windows 2 and 4.

[0009]

In the CAD display control process, a certain type is set for each window in the step of creating a figure in the multi-window state and in the step of modifying the created figure. Often, you want to hide all the primitives in.

For example, in a work window for creating line data of a three-dimensional shape, which is a skeleton, line data is displayed, surface data is hidden, and in a window for design examination, work data, line data, is displayed. The situation is where data is hidden and surface data is displayed.

In the conventional CAD display control system described above, display / display for each window is performed only in primitive units.
Since it was not possible to control hiding, in order to control hiding / hiding of an arbitrary element type for each window, the same operation must be performed for all applicable elements. There was a point.

[0012]

A CAD display control system according to the present invention includes an input device for inputting data necessary for drawing creation, an input control means for input request and analysis of input data, and respective commands. Command control means for controlling the above, command processing means, work data management means for managing work data, a display device for displaying graphics, and a display control function for controlling the types of graphics that can be displayed for each window. It is characterized by comprising display control means to which is added and management means for managing display data to which display control information used in the display control function is added.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

[Structure] As shown in FIG. 1, the CA of the present invention
The display control method of D includes an input device 1-1 for inputting data necessary for creating a figure, an input control means 1-2 for analyzing an input request and input data, and a command control means for controlling each command. 1-3 and command processing means 1-
4 and work data management means 1 for managing work data
-5, a display device 1-6 for displaying graphics, a display control means 1-7 for sending a drawing command to the display device, and a display data management means 1-8 for managing display data.

[Functions of Each Part] The input device 1-1 is a device that receives input data from an operator, and is the input control means 1
-It becomes valid by the request from -2 and the input data is fetched and saved.

The input control means 1-2 inputs the data in the format requested by the command control means 1-3 to the input device 1-1.
The data is read from the stored data, the data is analyzed and edited, and then the data is sent to the command control unit 1-3.

The command control means 1-3 requests the input control means 1-2 for the data required at that time, and returns the returned data together with other control information to the command processing means 1-4. Send to.

The command processing means 1-4 performs processing such as generation / update / deletion for each command based on the data sent from the command control means 1-3. At that time, the work data is referred to through the work data management means 1-5 as needed. Then, the processing result is sent to the work data management means 1-5 and the display control means.

The work data management means 1-5 manages data by generating, updating, retrieving and deleting work data in accordance with commands from the command processing means 1-4.

The display control means 1-7 edits the display data as needed in accordance with the command from the command processing means 1-4, and registers / updates / displays the display data in the display data management means 1-8.
Send commands such as search and delete. When redrawing of data is necessary, the display data managing means 1-8 searches the display data and sends a drawing command to the display device 1-6 to draw the data.

The display data managing means 1-8 is means for managing the window information 3-1, the primitive header 3-2, the primitive data 3-3 and the current filter information 3-4, as shown in FIG. In accordance with commands from the display control means 1-7, registration / update / retrieval of designated data
Delete it.

Here, each data and their mutual relation will be described.

First, the element filter number of the window information 3-1 is set to a different number for each window when the system is started up, and at the time of drawing each primitive, by comparison with the element filter information of the primitive data 3-3, For each window, it is determined whether or not to draw each element. The element filter information is bit information, the bit position corresponds to the element filter number, and the element is drawn only in the window in which the corresponding bit is ON (“1”).

Next, the type filter information of the window information 3-1 corresponds to the type filter number of the primitive header 3-2, and it is controlled whether or not an arbitrary type element is drawn for each window. To do. The type filter information is bit information, the bit position corresponds to the type filter number, and only the element of the type in which the corresponding bit is ON is drawn.

The current element filter information 3-4 manages the filter information to be registered in the element filter information of the primitive data 3-3 at the time of primitive registration.

The display device 1-6 receives the drawing command from the display control means 1-7 and draws the display data on the display.

[Operation] Next, a specific operation of a characteristic part of the present invention will be described. Here, in order to make the explanation easy to understand, a movement from a command (a filter command) serving as a user interface is shown.

First, when the filter command is instructed,
The command control unit 1-3 requests the window ID data from the input control unit 1-2. The input control means 1-2 that has received the request validates the input device 1-1 capable of indicating a window. When the operator inputs (clicks the mouse in an arbitrary window, etc.), the input device 1-1 stores the data in a dedicated buffer and returns the control to the input control means 1-2. Input control means 1
-2 reads the data stored in the buffer, converts it into the format (here, window ID) requested by the command control means 1-3, and sends the data to the command control means 1-3.

Similarly, the input processing of the element type and the display / non-display data is performed, and at the stage where these three data are obtained, the command control means 1-3 causes the command processing means 1-4 to send data (window). ID, element type, display /
Send (hide). The command processing means 1-4 analyzes the received data, and based on the result, the display control means 1
For -7, give necessary instructions. Hereinafter, the operation after that will be shown separately for each input data.

(1) Window ID: 1, element type:
1, Hidden display The operator's request in this pattern is that the element of the element type 1 should be hidden in the window 1.

First, the command control means 1-4 sends a command to the display control means 1-7, "Hide type 1 element in window 1". Upon receiving the instruction, the display control means 1-7 searches the primitive header 3-2 by the display data management means 1-8 and obtains a pointer to the type 1 element. Similarly, the window information 3-1 is searched to obtain the view information of the window 1.

Next, the display control means 1-7 causes the display device 1 to operate.
-6 is used to draw the element under the header of the type 1 element in the window 1 in the background color. Here, the type 1 element is hidden in the window 1.

Subsequently, the display control means 1-7 updates the type filter information of the window information 3-1 with respect to the display data management means 1-8 (turns off the bit corresponding to the type filter number of type 1). Do) command.

The display data management means 1-8 updates the type filter information of the window 1 of the window information 3-1. By doing so, even if the primitive data 3-3 is redrawn and the element is generated thereafter, the element of type 1 is not drawn in the window 1.

(2) Window ID: 1, element type:
2, Display In this pattern, the operator's request is to display the element of the element type 2 in the window 1.

First, the command control means 1-4 sends a command to the display control means 1-7 to "display type 2 elements in the window 2". Upon receiving the instruction, the display control means 1-7 searches the primitive header 3-2 by the display data management means 1-8 and obtains a pointer to the type 1 element. Similarly, the window information 3-1 is searched to obtain the view information of the window 1.

Next, the display control means 1-7 causes the display device 1
-6 is used to draw the element under the header of the type 1 element in the window 1. Here, the type 1 element is displayed in the window 1.

Subsequently, the display control means 1-7 updates the type filter information of the window information 3-1 with respect to the display data management means 1-8 (turns ON the bit corresponding to the type filter number of type 1). Do) command.

The display data managing means 1-8 updates the type filter information of the window 1 of the window information 3-1. By doing so, when the primitive data 3-3 is redrawn and the element is generated thereafter, the element of type 1 is drawn in the window 1.

With the above operation, display / non-display of an element of any type can be controlled for each window.

[0041]

As described above, according to the present invention, the device for managing the display data is improved and the display managing means is improved.
The operator can freely control the display / non-display of any type of element for each window by simply performing three simple operations: window instruction, element type instruction, and display / non-display instruction. Can be created efficiently.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a conventional display data management structure diagram.

FIG. 3 is a display data management structure diagram that is a feature of the present invention.

[Explanation of symbols]

 1-1 Input Device 1-2 Input Control Means 1-3 Command Control Means 1-4 Command Processing Means 1-5 Work Data Management Means 1-6 Display Device 1-7 Display Control Means 1-8 Display Data Management Means 2- 1 Window Information 2-2 Primitive Data 2-3 Current Filter Information 3-1 Window Information 3-2 Primitive Header 3-3 Primitive Data 3-4 Current Filter Information

Claims (1)

[Claims] 1. An input device for inputting data required for drawing creation, input control means for input request and analysis of input data, command control means for controlling each command, and command processing means. Work data management means for managing work data, a display device for displaying graphics, display control means with a display control function for controlling the type of graphics that can be displayed for each window, and the display control function. A display control system for CAD, comprising: a management unit that manages display data to which display control information to be used is added.