JPH08227461A - Cad system with multiple end-point determining methods - Google Patents

Abstract

PURPOSE: To obtain the CAD system equipped with an end-point determining method which makes actual designing and drawing efficient by providing plural specific methods as a determining method for an end point for various drawing commands and enabling them to be selected. CONSTITUTION: When a drawing command is selected first, numeral setting for length is prompted, one of upward and downward, and right and left directions 1-4 is questioned, and an end point is determined relatively according to a start point. When the numeral setting for the length is canceled, a reference point is set, whether the end point is horizontally at the same position with the inputted start point up to the reference point position or vertically at the same position 2, or whether the reference point is the end point 3 as it is questioned, and the end point is determined. Thus, a method for deciding the reference point as the end point as it is provided, so a conventional optional determining method can be executed. Consequently, a drawing system which is efficient in actual designing and drawing is obtained and not only the efficiency, but also flexibility is given.

Description

Detailed Description of the Invention

[Detailed Description of Industry] In the present invention, in a CAD command whose basic drawing is to determine a start point to an end point, a method of determining the end point can be performed by setting a numerical value of length and by selecting either of the directions of up, down, left and right. The most frequently used method in design drafting called selection and the method most frequently used next to the former of determining by the same position in the horizontal direction from the start point to the temporarily determined reference point or the same position in the vertical direction are used. This is a CAD system that achieves more efficient drawing by preferentially preparing for drawing commands.

[Prior Art] When a drawing command in a conventional CAD system determines an end point from a start point, it is determined by an absolute position of coordinates or a relative position from the start point. For example, if it is an absolute position, input the X and Y coordinates. If it is a relative position, the amount of movement in the X direction and the amount of movement in the Y direction. Or the direction (angle) and the length to the direction. These methods are always effective in determining the end point in any position and direction. However, in actual design and drafting, it is very often the case that drawing is performed in the vertical and horizontal directions with a known length. In many cases, the end point is determined in the horizontal direction or the vertical direction from the start point at the same position as a certain reference point. Therefore, CAD having the conventional end point determination method
The system always prompts the end point to an arbitrary position,
In actual design and drafting, it is not efficient.

[Problems to be Solved by the Invention] In order to eliminate the drawbacks of the present invention, the position of the end point is arbitrarily prompted in various drawing commands in which the determination of the start point to the end point in the CAD system is the basis of drawing. It is not a method, but a CAD system having an end point determination method that is efficient in actual design and drafting.

[Means for Solving the Problems] CA
The method of determining the end point for various drawing commands that are based on the determination of the start point to the end point in the D system
First, a method of setting a numerical value for the length from the starting point and selecting it by selecting either the up, down, left, or right direction, and temporarily determining a certain reference point, and the end point is the same position as the reference point horizontally from the start point, or the reference point in the vertical direction. It is considered that various drawing commands can be provided with and selected from the same position, or a method of determining by selecting either the reference point or the end point as it is.

[Operation] Since the present invention has the above-described configuration, when design drafting is executed in this CAD system, a method of determining an end point is used in which various drawing commands are frequently used in actual design drafting. Since it is prepared preferentially, it will be more efficient than before.

[Embodiment] First, when a drawing command is selected, a numerical value for the length is prompted, then either the up, down, left, or right direction is asked, and the end point is relative to the input start point. decide. If the numerical setting of the length is canceled, set the reference point, and then the end point is the same position in the horizontal direction or the same position in the vertical direction up to the reference point position with respect to the input start point. Alternatively, the end point is determined by asking whether the reference point is the end point as it is. Therefore, there is also a method to use the reference point as the end point,
Conventional optional determination methods are also feasible.

[Advantages of the Invention] Since the present invention is configured as described above, it becomes an efficient drawing system in actual design and drawing. In addition, since the end point determination method in the conventional drawing command is basically provided, not only efficiency but also flexibility is taken into consideration. Further, by providing several end point determination methods for one drawing command, the number of commands is not so large for a highly functional CAD system, and the operability is excellent. Further, by providing a consistent end point determination method for all drawing commands, the CAD system becomes excellent in terms of learnability.

[Brief description of drawings]

FIG. 1 is a flowchart showing an embodiment of a drawing command by a CAD system for determining a plurality of end points according to the present invention.

Claims (1)

[Claims] 1. A command (command) of CAD (computer-aided design drawing), which is the basis of drawing by determining the start point to the end point, determines the end point by setting the numerical value of the length from the start point and by selecting either the direction of up, down, left, or right. And a certain reference point is temporarily set, and the end point is located at the same position as the reference point in the horizontal direction from the start point (for example, the coordinates of the start point are (ax, a
y) and the coordinates of the reference point are (bx, by), the coordinates of the end point are (bx, ay). ), Or at the same position as the reference point in the vertical direction (for example, the coordinates of the starting point are (cx, -cy),
If the coordinates of the reference point are (dx, dy), the coordinates of the end point are (cx, dy). ), Or a method of determining by selecting either the reference point or the end point as it is, is provided in various drawing commands,
And a CAD system with selectable features.