CN112199756A - Method and device for automatically determining distance between straight lines - Google Patents
Method and device for automatically determining distance between straight lines Download PDFInfo
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- CN112199756A CN112199756A CN202011194146.6A CN202011194146A CN112199756A CN 112199756 A CN112199756 A CN 112199756A CN 202011194146 A CN202011194146 A CN 202011194146A CN 112199756 A CN112199756 A CN 112199756A
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- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
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Abstract
The invention discloses a method and a device for automatically determining the distance between straight lines. Wherein, the method comprises the following steps: displaying the design drawing in the target coordinate system; receiving a selection instruction of a first straight line and a second straight line in the design drawing; acquiring a first coordinate of a first line segment in a first straight line and a second coordinate of a second line segment in a second straight line; and determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate. The invention solves the technical problem of low efficiency in determining the distance between the straight lines in the prior art.
Description
Technical Field
The invention relates to the technical field of building aided design, in particular to a method and a device for automatically determining the distance between straight lines.
Background
In the prior art, the distance between two straight lines is usually required to be determined in the process of building auxiliary design by a user. For example, when creating a parapet wall, the shortest distance between two straight lines needs to be calculated. In the prior art, when the distance between the two straight lines is determined, a worker is usually required to perform temporary calculation or analysis so as to determine the distance between the two straight lines.
The above method results in inefficient determination of the distance between the lines.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for automatically determining the distance between straight lines, which at least solve the technical problem of low efficiency in determining the distance between the straight lines in the prior art.
According to an aspect of an embodiment of the present invention, there is provided a method for automatically determining a distance between straight lines, including: displaying the design drawing in the target coordinate system; receiving a selection instruction of a first straight line and a second straight line in the design drawing; acquiring a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line; and determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
As an alternative embodiment, the receiving the selection instruction of the first straight line and the second straight line in the design drawing includes: determining a selection button for each straight line in the design drawing, wherein the selection button is used for selecting the straight line; when the pressing of the selection button is detected, a straight line corresponding to the selection button is determined.
As an alternative embodiment, the acquiring the first coordinate of the first line segment in the first straight line and the second coordinate of the second line segment in the second straight line includes: cutting a line segment from the first straight line as the first line segment, and cutting a line segment from the second straight line as the second line segment; and acquiring the first coordinate and the second coordinate according to a target coordinate system where the design drawing is located.
As an optional implementation manner, before the obtaining the first coordinate and the second coordinate according to the target coordinate system of the design drawing, the method further includes: establishing the target coordinate system; and importing the design drawing into the target coordinate system.
As an optional implementation manner, after determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate, the method further includes: and displaying a line segment corresponding to the target distance between the first straight line and the second straight line.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for automatically determining a distance between straight lines, including: a display unit for displaying the plan in the target coordinate system; a receiving unit, configured to receive a selection instruction for a first straight line and a second straight line in the design drawing; an acquiring unit configured to acquire a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line; and the determining unit is used for determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
As an optional implementation, the receiving unit includes: a first determining module, configured to determine a selection button for each straight line in the design drawing, where the selection button is used to select the straight line; and the second determining module is used for determining a straight line corresponding to the selection button under the condition that the selection button is detected to be pressed.
As an optional implementation, the obtaining unit includes: an intercepting module, configured to intercept a segment of line from the first straight line as the first line segment, and intercept a segment of line from the second straight line as the second line segment; and the acquisition module is used for acquiring the first coordinate and the second coordinate according to the target coordinate system where the design drawing is located.
As an optional implementation manner, the obtaining unit further includes: the establishing module is used for establishing the target coordinate system before the first coordinate and the second coordinate are obtained according to the target coordinate system where the design drawing is located; and the importing module is used for importing the design drawing into the target coordinate system.
As an optional implementation, the apparatus further includes: and a display unit configured to display a segment corresponding to the target distance between the first straight line and the second straight line after determining the target distance between the first straight line and the second straight line from the first coordinate and the second coordinate.
In the embodiment of the invention, the design drawing is displayed in a target coordinate system; receiving a selection instruction of a first straight line and a second straight line in the design drawing; acquiring a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line; according to the method for determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate, because in the method, after a user determines the two straight lines, the system can obtain the coordinates of the line segments in the two straight lines and determine the distance between the two straight lines, the effect of automatically determining the distance between the straight lines is realized, and the technical problem of low efficiency in determining the distance between the straight lines in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of an alternative method for automatically determining the distance between lines according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative T-shaped parapet for automatically determining the distance between straight lines in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of an alternative T-shaped parapet for automatically determining the distance between straight lines in accordance with an embodiment of the present invention;
FIG. 4 is a schematic illustration of an alternative determined plumb line for automatically determining the distance between straight lines in accordance with embodiments of the present invention;
fig. 5 is a schematic structural diagram of an alternative apparatus for automatically determining the distance between straight lines according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an aspect of the embodiments of the present invention, there is provided a behavior recognition method, optionally, as an optional implementation manner, as shown in fig. 1, the method includes:
s102, displaying a design drawing in a target coordinate system;
s104, receiving a selection instruction of a first straight line and a second straight line in the design drawing;
s106, acquiring a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line;
and S108, determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
Optionally, the present application may be, but is not limited to, applied to a building aided development or design process, in the embodiment of the present application, a user may perform the building aided development or design through a computer, and in this process, the design drawing may be imported into a target coordinate system, where the target coordinate system is a pre-established coordinate system, and may be a two-dimensional coordinate system or a three-dimensional coordinate system. Then, a first straight line and a second straight line are determined from the design drawing, after the first straight line and the second straight line are determined, the system can automatically acquire a first coordinate of the first line segment in the first straight line and a second coordinate of the second line segment in the second straight line, and finally determine the shortest distance between the first straight line and the second straight line, so that the problem of low efficiency of determining the distance between the straight lines in the prior art is solved, and the effect of determining the distance between the straight lines is improved.
In the embodiment of the application, only two straight lines are selected from the design drawing by a user, and then the system can automatically determine the distance between the two straight lines and give a result.
As an alternative embodiment, the receiving a selection instruction of the first straight line and the second straight line in the design drawing includes: determining a selection button for each straight line in the design drawing, wherein the selection button is used for selecting the straight line; in the case where it is detected that the selection button is pressed, a straight line corresponding to the selection button is determined.
Optionally, in this embodiment, a selection button may be provided for each straight line in the design drawing, and the selection button may be displayed or hidden. And if the pressing operation of the selection button is detected, determining that the straight line corresponding to the selection button is the first straight line or the second straight line.
Through this embodiment, can convenient and fast select first straight line and second straight line, improve the efficiency of selecting first straight line and second straight line.
As an alternative implementation, the obtaining the first coordinate of the first line segment in the first straight line and the second coordinate of the second line segment in the second straight line includes: intercepting a line segment from the first straight line as a first line segment, and intercepting a line segment from the second straight line as a second line segment; and acquiring a first coordinate and a second coordinate according to a target coordinate system where the design drawing is located.
Optionally, in this embodiment, a first line segment is cut from the first straight line or a second line segment is cut from the second straight line, taking the first line segment as an example, a segment with a fixed length may be cut from any point in the first straight line to any direction in the first straight line as the first line segment of the first straight line.
Through the embodiment, the effect of rapidly acquiring the first line segment and the second line segment can be realized.
As an optional implementation manner, before the obtaining the first coordinate and the second coordinate according to the target coordinate system where the design drawing is located, the method further includes: establishing a target coordinate system; the plan is imported into a target coordinate system.
Alternatively, the target coordinate system in the embodiment of the present application may be a two-dimensional coordinate system or a three-dimensional coordinate system. Taking the three-dimensional coordinate system as an example, after the design drawing is imported into the three-dimensional coordinate system, each straight line in the design drawing has a corresponding coordinate in the three-dimensional coordinate system. If the position of the plan is dragged in the three-dimensional coordinate system, the corresponding coordinates are also changed.
Through the embodiment, the method can rapidly acquire the first coordinate and the second coordinate, and the efficiency of acquiring the first coordinate and the second coordinate is improved.
As an optional implementation manner, after determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate, the method further includes: and displaying a line segment corresponding to the target distance between the first straight line and the second straight line.
Optionally, in this embodiment, after the shortest distance between the first straight line and the second straight line is determined by the above method, the shortest distance may be shown in the form of a line segment, where the line segment may be a common perpendicular line of the first straight line and the second straight line.
The above-described method for automatically determining the distance between the straight lines is explained below with reference to specific examples. In this embodiment, it is intended to provide a cross-platform geometric algorithm. The method realizes the abstract definition of points, lines and surfaces in solid geometry mathematics, establishes a space system, and realizes the operation of solid geometry and the realization of common functions in the space system. The technology supports cross-platform and cross-language and is suitable for more extensive developers. When the function is used, the function which is packaged can be called to quickly obtain a result only by introducing the library file of the embodiment of the application into a project and transmitting corresponding parameters of a function interface.
For example, in creating a T-shaped parapet, there are two parallel lines in the capping direction, one left to right, parallel to the wall, and the distance of these two lines from the wall centerline needs to be calculated. Fig. 2 and 3 are a right line segment and a left line segment of the capping, respectively. In the application, the straight line where any two line segments of the right line segment, the left line segment and the central line are located can be used as a first straight line and a second straight line, and the shortest distance between the two straight lines is determined. In the concrete implementation, parameters are firstly transmitted: origin s0 of the first segment, direction vector dir0 of the first segment, origin s1 of the second segment, direction vector dir1 of the second segment. And returning a result: the minimum distance between the first line and the second line.
The implementation process comprises the following steps:
1. vector u is the s0 vector minus the s1 vector. The variable a is a dir0 vector point-by-point dir0 vector. The variable b is a dir0 vector point multiplied by a dir1 vector. The variable c is a dir1 vector point multiplied by a dir1 vector. The variable d is a dir0 vector point-by-u vector. The variable e is a dir1 vector point-by-u vector. The variable det is a c b.
2. And judging whether the straight lines are in a parallel relation or not according to the calculated det value.
If the two straight lines are in parallel relation, the distance required to move the s1 origin is calculated, and the s1 origin is moved by a line segment connected with s0 and is perpendicular to the two straight lines. The specific judgment logic is as follows:
if b > c, t is d/b, otherwise t is e/c. Then the shifted s1 is denoted as s1+ t dir 1.
The variable invDet is 1/det, t is (a e-b d) invDet;
if the two straight lines are in the relation of the non-coplanar straight lines, the distance between the two straight lines is the distance between the common perpendicular lines. As shown in fig. 4. In fig. 4, α and β are two planes, a and B are a first straight line and a second straight line, a' is a mapping line of a on the plane α, and a and B are intersections of common perpendicular lines with a and B.
The distance of the common perpendicular line AB is the direct distance of the two different plane straight lines. The judgment logic is as follows: the variable invDet is 1/det, and the first origin s0 needs to be moved by s dir0, where s (b e-c d) invDet; the second origin s1 needs to be moved by a distance t dir1, where t (a e-b d) invDet.
The two moved original points are two vertexes of a common vertical line, and the distance between the two vertexes is the distance between the non-planar straight lines.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
According to another aspect of the embodiments of the present invention, there is also provided an apparatus for automatically determining a distance between straight lines, which implements the above-described method for automatically determining a distance between straight lines. As shown in fig. 5, the apparatus includes:
a display unit 502 for displaying the plan in the target coordinate system;
a receiving unit 504, configured to receive a selection instruction for a first straight line and a second straight line in the design drawing;
an obtaining unit 506, configured to obtain a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line;
a determining unit 508, configured to determine a target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
Optionally, the present application may be, but is not limited to, applied to a building aided development or design process, in the embodiment of the present application, a user may perform the building aided development or design through a computer, and in this process, the design drawing may be imported into a target coordinate system, where the target coordinate system is a pre-established coordinate system, and may be a two-dimensional coordinate system or a three-dimensional coordinate system. Then, a first straight line and a second straight line are determined from the design drawing, after the first straight line and the second straight line are determined, the system can automatically acquire a first coordinate of the first line segment in the first straight line and a second coordinate of the second line segment in the second straight line, and finally determine the shortest distance between the first straight line and the second straight line, so that the problem of low efficiency of determining the distance between the straight lines in the prior art is solved, and the effect of determining the distance between the straight lines is improved.
In the embodiment of the application, only two straight lines are selected from the design drawing by a user, and then the system can automatically determine the distance between the two straight lines and give a result.
For other examples of the embodiments of the present application, please refer to the above examples, which are not described herein again.
The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially or partially implemented in the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and including instructions for causing one or more computer devices (which may be personal computers, servers, or network devices) to execute all or part of the steps of the method according to the embodiments of the present invention.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for automatically determining a distance between lines, comprising:
displaying the design drawing in the target coordinate system;
receiving a selection instruction of a first straight line and a second straight line in the design drawing;
acquiring a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line;
and determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
2. The method of claim 1, wherein receiving a selection instruction for a first line and a second line in the blueprint comprises:
determining a selection button for each straight line in the plan, wherein the selection button is used for selecting the straight line;
and determining a straight line corresponding to the selection button when the selection button is detected to be pressed.
3. The method of claim 1, wherein obtaining the first coordinates of the first segment in the first line and the second coordinates of the second segment in the second line comprises:
intercepting a line segment from the first straight line as the first line segment, and intercepting a line segment from the second straight line as the second line segment;
and acquiring the first coordinate and the second coordinate according to a target coordinate system where the design drawing is located.
4. The method of claim 3, wherein before obtaining the first coordinate and the second coordinate according to the target coordinate system in which the design drawing is located, the method further comprises:
establishing the target coordinate system;
and importing the design drawing into the target coordinate system.
5. The method of claim 1, wherein after determining the target distance of the first line from the second line from the first coordinate and the second coordinate, the method further comprises:
and displaying a line segment corresponding to the target distance between the first straight line and the second straight line.
6. An apparatus for automatically determining the distance between straight lines, comprising:
a display unit for displaying the plan in the target coordinate system;
the receiving unit is used for receiving a selection instruction of a first straight line and a second straight line in the design drawing;
an acquisition unit configured to acquire a first coordinate of a first line segment in the first straight line and a second coordinate of a second line segment in the second straight line;
and the determining unit is used for determining the target distance between the first straight line and the second straight line according to the first coordinate and the second coordinate.
7. The apparatus of claim 6, wherein the receiving unit comprises:
the first determining module is used for determining a selection button for each straight line in the design drawing, wherein the selection button is used for selecting the straight line;
and the second determining module is used for determining a straight line corresponding to the selection button under the condition that the selection button is detected to be pressed.
8. The apparatus of claim 6, wherein the obtaining unit comprises:
the intercepting module is used for intercepting a line segment from the first straight line to be used as the first line segment and intercepting a line segment from the second straight line to be used as the second line segment;
and the acquisition module is used for acquiring the first coordinate and the second coordinate according to a target coordinate system where the design drawing is located.
9. The apparatus of claim 8, wherein the obtaining unit further comprises:
the establishing module is used for establishing a target coordinate system before the first coordinate and the second coordinate are obtained according to the target coordinate system where the design drawing is located;
and the importing module is used for importing the design drawing into the target coordinate system.
10. The apparatus of claim 6, further comprising:
and the display unit is used for displaying a line segment corresponding to the target distance between the first straight line and the second straight line after the target distance between the first straight line and the second straight line is determined according to the first coordinate and the second coordinate.
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| CN202011194146.6A CN112199756A (en) | 2020-10-30 | 2020-10-30 | Method and device for automatically determining distance between straight lines |
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| CN202011194146.6A CN112199756A (en) | 2020-10-30 | 2020-10-30 | Method and device for automatically determining distance between straight lines |
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