JP2011238193A - Method to draw a parallel-based figure and automatic forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method to draw a figure mainly consisting of parallel lines whose width changes in the middle or which are deformed partially, and an automatic forming method.SOLUTION: Automatic forming is achieved by combining the following processing units: a connecting unit of parallel line and supplementary line which connects an edge of the supplementary line to an edge of the parallel line or on the parallel line; a connecting unit of parallel lines which connects the edge of the parallel line to the edge of another parallel line or on another parallel line by elongating or shortening a line; a small-projection removal unit based on a direction determination which uses a line direction to remove a parallel line unnecessarily projecting due to relation with the supplementary line; the small-projection removal unit based on a phase determination which uses a cross pattern of parallel lines to remove the parallel line unnecessarily projecting by reason that the parallel line connects to another parallel line; a supplementary line classification unit which classifies the supplementary line according to relation between the supplementary line and the parallel line; a figure integration unit which removes an unnecessary portion and integrates the parallel lines; and a deformed portion displacement unit which uses the supplementary line to modify a shape of the parallel line.

Description

Detailed Description of the Invention

  The present invention relates to a technique for drawing a figure mainly composed of parallel lines whose width is changed in the middle or part of which is changed in the middle, and for automatically shaping the drawn figure for space analysis and design by computer software. .

  A line figure used for spatial analysis or design is drawn by computer software such as GIS (Geographic Information System) or CAD (Computer Assisted Design). At that time, there are many objects that can be basically drawn as parallel lines, such as roads and pipelines. For such an object, it is effective to draw a plurality of lines by a function of drawing in parallel all at once.

  However, not all ranges of these objects are parallel. In some cases, the width of the parallel lines changes or a part that is not partially parallel occurs. Moreover, in the location where several parallel lines cross | intersect, the parallel line inside an intersection location must be interrupted. At first glance, even an object that seems to be drawn as parallel lines actually has a complicated shape, so it is possible to connect parts that change width, change the shape of parts that are not parallel, Any interruptions inside the intersection must be handled manually.

  Further, in spatial analysis and design by computer software, more advanced processing is possible because continuous line figures are connected by coordinate matching or hold height information. However, connecting consecutive line figures with coordinate matching, and shaping the line figure while maintaining the height information can require a lot of work and the height information can be used as it is. It is gone.

Problems to be solved by the invention

  In the conventional technology, the method of repeating drawing and shaping processing alternately, performing drawing and shaping processing in a batch, or performing a combination of alternating repetition and batch processing, both of which are performed manually. Has been done. In the present invention, drawing and shaping processing are performed all together, but one of the purposes is to streamline drawing and to improve efficiency by automating the shaping processing.

  One of the purposes is to connect adjacent line figures by coordinate matching by automatically performing the shaping process.

  One of the purposes is to maintain the parallelism of the figure by shaping the parallel lines only by expansion and contraction.

  One of the purposes is to perform shaping while automatically using the height information obtained at the time of drawing by performing the shaping process automatically.

Means for solving the problem

In order to achieve these objects, the present invention is specified by a combination of the following items (1) to (11).
(1) Shapes that have been processed using a line figure database that stores line figures drawn using software for drawing lines and line figures that can be regarded as parallel, and are automatically integrated and modified This is a generation method.
(2) In a line figure, parallel lines drawn in a lump so that a plurality of lines can be regarded as parallel, and the parallel lines are connected when the width or number of parallel lines changes, or the parallel lines are no longer parallel There are supplemental lines for drawing the shape of the part and drawing the updated part of the line figure in the line figure database.
(3) As a parallel drawing unit, from the image having a figure mainly composed of a parallel shape, the number of parallel lines forming the parallel shape is classified, and the shape of the deformed portion that has become partially non-parallel and other parallel shapes are classified. Ignores intersections that do not have a parallel shape but intersect the line, and draw them as parallel lines at once. Alternatively, only one of them is drawn, and the other lines are created by parallel copying.
(4) As a supplementary drawing unit, for correcting the shape of a line connecting the parallel lines interrupted because the width is different from the parallel line drawn by the parallel drawing unit, or the shape of a deformed portion that is not partially parallel. Is drawn as a supplementary line.
(5) When a line end of a supplemental line is projected vertically onto an adjacent parallel line or an extension of a parallel line as a joint between the parallel line and the supplemental line, and the line ends of a plurality of supplemental lines are close to each other In this case, the parallel lines are joined to one end, and further, the ends of the parallel lines are expanded and contracted to connect the ends of the parallel lines to the ends of the supplementary lines within a certain expansion / contraction range.
(6) As a connecting portion between parallel lines, by extending or contracting the end of the parallel line, the line end of the parallel line at a point where it intersects with another parallel line or the line end of another parallel line that has been similarly expanded or contracted Join one another or a parallel line onto another parallel line.
(7) As a small protrusion removal part by direction determination, it can be considered that one end of the supplementary line is above the parallel line, and if the other end is close to the line end of the parallel line, A parallel line when the angle formed by the direction from the line end of the supplementary line considered to be above to the line end of the other supplemental line and the direction of the line end of the adjacent parallel line is a depression angle The small protrusion of the parallel line is removed by shrinking the line end of the line to the end of the supplemental line that can be regarded as being above the parallel line.
(8) As a small protrusion removal part by phase determination, when a parallel line intersects another parallel line with a large incident angle, or when it intersects another parallel line having a small incident angle but a narrow width, A pattern of intersections with several parallel lines formed by the intersection of one of the parallel lines with the original parallel line when one of the parallel lines protrudes greatly into another parallel line or penetrates another parallel line To remove the protruding portion.
(9) As a supplemental line type classification unit, when both supplementary lines can be considered to be on the line end or line of parallel lines of the same type, both supplementary line end points Are classified into the same type of parallel lines that can be regarded as line ends or on the line, and the same type, and supplementary when the line ends of multiple supplemental lines can be considered to be on the line ends or lines of the same point. The other end of the line is classified into the same type as the parallel line that can be regarded as being on the line end or on the line, and both line ends of the supplementary line can be regarded as being on the line end or line of a different type of parallel line. In this case, the supplementary line is divided into two parts by intersecting parallel lines, and the line end that was the end of the original supplemental line is of the same type as the parallel line that can be considered to be on the line end or on the line. Classify.
(10) As the figure integration unit, the parallel lines are divided at the intersections of the parallel lines, and it is determined whether the parallel lines are inside or outside the other parallel lines according to the division pattern. While removing the part which existed, the line removed within the intersection is divided | segmented in the intersection part with a parallel line of a kind, and the part which should not be removed by a division | segmentation pattern is restored.
(11) As a deformed part replacement part, when it can be considered that both ends of the supplementary line are coincident with or on the same parallel line, the range of the parallel line is interrupted, Replace with a supplementary line that can be considered a match.

  Among the items specified above, (5) to (11) are combinations of basic functions. Depending on the structure of the graphic database and the functions of the software used, the order of the combinations may be changed or some functions may be different. It can be performed several times in the order or by combining only necessary functions.

  The present invention is also used to update an existing line graphic database by regarding the existing line graphic database as parallel lines with respect to the existing line graphic database and using the lines for correcting these line figures as supplementary lines. Can do.

  As a second invention, in the parallel drawing unit, a plurality of lines are made parallel, the width and the number of the parallel lines are changed as appropriate, and the shape of the deformed portion that has become partially unparalleled or another parallel line Ignore the intersection with, draw parallel lines over continuous sections, and in the supplementary drawing section, after drawing the parallel lines, return the path where the parallel lines were drawn, the width of the parallel lines Draw a supplementary line that connects the parallel lines of the changed parts, or draw the shape of the deformed part that is no longer partially parallel.

  As a third invention, in the small protrusion removal part by direction determination, it can be considered that one of the line ends of the supplementary line is above the parallel line, and the other is close to the line end of the parallel line, When the angle composed of the direction from the end of the supplementary line that can be regarded as being above the parallel line to the end of the other supplemental line and the direction of the adjacent parallel line is the depression The line end of the parallel line is reduced to the line end of the supplementary line that can be regarded as being above the parallel line.

  As a fourth aspect of the invention, in the small protrusion removal portion by phase determination, when the parallel line intersects with another parallel line at a large incident angle, or when it intersects with another parallel line having a small incident angle but a narrow width In addition, when one of the original parallel lines protrudes greatly into another parallel line or penetrates another parallel line, there are several parallel lines created by the intersection with the original parallel line. Based on the crossing situation, the longest section between the intersections is used as a reference, and the two adjacent sections are interrupted, and the pattern that the adjacent sections are not interrupted is analyzed, and the tip of the parallel line that contradicts this pattern is removed. .

  As a fifth invention, in the supplemental line type classification unit, both supplementary lines can be regarded as being both on the line end or line of the same type of parallel line. Are classified into the same type as parallel lines of the same type that can be regarded as being on the line end or on the line.

  As a sixth invention, in the supplemental line type classification unit, when the line ends of a plurality of supplemental lines can be regarded as being on the line ends or lines of the parallel line at the same point, the other line end of the supplemental line is a line It is classified into the same type as parallel lines that can be considered to be on the edge or line.

  As a seventh invention, in the supplemental line type classification unit, when both line ends of the supplementary line can be regarded as being on the line ends or lines of different types of parallel lines, the supplementary line is divided by parallel lines intersecting the supplemental lines. Then, the line is divided into two lines, and the line end that is the line end of the original supplemental line is classified into the same type as the parallel line that can be regarded as being on the line end or the line.

The actual state of the invention

  Hereinafter, an embodiment will be described as an example in which the above-described method of automatically shaping a figure mainly composed of parallel lines is applied to creation of map data for spatial analysis.

  The line figure to be processed in this embodiment is a line figure holding height information drawn from a three-dimensional aerial photograph using a plotter in aerial photogrammetry, or CAD is used in digitizing an existing figure. Thus, the line figure does not hold the height information drawn from the existing map.

=== Parallel drawing part and supplementary drawing part ===
In the parallel drawing unit, for example, in FIG. 1, road 1 is drawn as parallel lines by line segments R11 and R12, road 2 is drawn by R21 and R22, and road 3 is drawn by R31 and R32. Further, on the road 3, since there is a sidewalk on one side, the line segment R33 is simultaneously drawn as parallel lines. In addition to the sidewalk, if there are card rails, median strips, gutters, etc., these can also be drawn as parallel lines at the same time.

  Since the road 1 strikes the road 3 at an angle, one line segment R11 constituting the road 1 ends at a place that can be regarded as a line of the line segment R31 constituting the road 3, but the line segment R12 is It ends when it protrudes from R31. Therefore, it is ambiguous whether the line segments R12 and R31 are connected.

  After the road 1 composed of the line segments R11 and R12 is drawn on the assumption that it is a parallel line, a part that is not actually parallel, for example, the line segments S3 and S5 that are corners of road corners are supplemented. Drawn. Further, S4 representing the connection of the sidewalk edge R33 existing on the road 3 constituted by the line segments R31 and R32 and the line segment R12 constituting the road 1 is additionally drawn.

  After the road 2 composed of the line segments R21 and R22 is drawn on the assumption that they are parallel lines, a line segment S1 representing a shape where a portion that is not actually parallel, for example, a part of the road is widened. Is supplementarily drawn. In addition, a line segment S2 in which a part of the road is widened and the line segment S2 that is a corner cut at the road corner intersecting with the line segment R11 constituting the road 1 is additionally drawn.

=== Joint portion of parallel lines and supplementary lines ===
Next, as a joint between the parallel line and the supplemental line, the line end of the supplemental line is projected vertically onto the adjacent parallel line or an extension of the parallel line, and the line end of the parallel line is expanded or contracted, thereby extending the parallel line. The end of the line is connected to the end of the supplementary line within a certain stretch range.

  For example, S1s and S1e which are line ends of the supplemental line segment S1 in FIG. 1 move to the vertically projected positions on the line segment R22 which is one of the parallel lines constituting the road 2. S2e which is the line end of the supplemental line segment S2 moves to a vertically projected position on the line segment R11 which is one of the parallel lines constituting the road 1. S2s which is the other line end of the line segment S2 is a line in which the line segment S1 of the supplementary line is one of the parallel lines constituting the road 1 by the processing of the joint part of the parallel line and the supplemental line in the deformed place replacement unit. It moves to the vertically projected position on the segment S1 of the supplementary line, which is a part of the segment R22. S3s which is the line end of the line segment S3 of the supplemental line moves to a vertically projected position on the line segment R11 which is one of the parallel lines composing the road 1, and S3e is a parallel line composing the road 3. It moves to a vertically projected position on one line segment R33. S4s which is the line end of the supplemental line segment S4 moves to a vertically projected position on the line segment R11 which is one of the parallel lines constituting the road 1, and S4e is a parallel line which constitutes the road 3. It moves to a vertically projected position on one line segment R33. S5s which is the line end of the line segment S5 of the supplemental line moves to a vertically projected position on the line segment R12 which is one of the parallel lines composing the road 1, and S5e is a parallel line composing the road 3. It moves to a vertically projected position on one line segment R31. As a result, the end of the supplementary line is coupled to the parallel line as shown in FIG.

  After the line ends of the supplemental lines move on the parallel lines, for example, a plurality of line ends such as S4s which is the line end of the supplemental line segment S4 and S5s which is the line end of the line segment S5 in FIG. Are adjacent to each other on a line segment R12 of parallel lines projected vertically. As a result, as shown in FIG. 3, the ends of the plurality of supplemental lines are coupled to one place on the parallel lines.

  After the line end of the supplementary line moves on the parallel line, for example, R11e which is the line end of the line segment R11 constituting the road 1 in FIG. Will be coupled to S3s which is the end of the line. As a result, the end of the supplementary line and the end of the parallel line are coupled as shown in FIG.

=== Connection between parallel lines ===
Next, by expanding or contracting the line ends of the parallel lines, the line ends of the parallel lines or other parallel lines are separated from each other at the point where they intersect with other parallel lines or the line ends of other parallel lines that are similarly expanded or contracted. Join on the line.

  For example, the line end R12e of the line segment R12 that is one of the parallel lines constituting the road 1 in FIG. 3 exists between the line segments R31 and R33 that are one of the parallel lines that constitute the road 3, and is expanded. If it is coupled to the line segment R33, and if it is degenerated, it is coupled to the line segment R31. However, since the distance of degeneration is shorter than the expansion, it is coupled on the line segment R31 as shown in FIG.

=== Small protrusion removal part by direction determination ===
Next, a supplementary line that can be considered to be above the parallel line if one of the line ends of the supplemental line is above the parallel line and the other is close to the line end of the parallel line When the angle composed of the direction from the end to the end of the other supplemental line and the direction of the adjacent parallel line is the depression, the line end of the parallel line is above the parallel line. The small protrusion of the parallel line is removed by shrinking to the end of the supplemental line that can be regarded as being.

  For example, the road 2 in FIG. 5A is a line segment R12 that is one of the parallel lines constituting the road 1 with the line segment R21 that is one of the parallel lines constituting the road 2 as a reference for generating the parallel line. It is drawn until it hits. At that time, since the road 2 collides with the road 1 at a large incident angle, the line segment R22, which is one of the parallel lines constituting the road 2 that has not become a reference for generating parallel lines, constitutes the road 1. It protrudes greatly from R12 which is one of the parallel lines. Further, the line end S2e of the supplemental line segment S2 is a line segment R12 that is one of the parallel lines constituting the road 1, and S2s is a line segment R12 that is one of the parallel lines constituting the road 2, respectively. Are connected. The road 3 is drawn until a line segment R31, which is one of the parallel lines constituting the road 3, is used as a reference for generating a parallel line, until it hits a line segment R12, which is one of the parallel lines constituting the road 1. At that time, since the road 3 collides with the road 1 at a small incident angle, the line segment R32, which is one of the parallel lines constituting the road 3 that has not become a reference for generating parallel lines, constitutes the road 1. It protrudes slightly from R12 which is one of the parallel lines. Further, the line end S3e of the supplemental line segment S3 is a line segment R12 that is one of the parallel lines constituting the road 1, and S3s is a line segment R32 that is one of the parallel lines constituting the road 3, respectively. Are connected. The road 4 is drawn until a line segment R42, which is one of the parallel lines constituting the road 4, is used as a reference for generating a parallel line until it hits a line segment R12, which is one of the parallel lines constituting the road 1. At that time, since the road 4 collides with the road 1 at a large incident angle, the line end R41e of the line segment R41 that is one of the parallel lines constituting the road 4 that was not a reference for generating the parallel lines is The road has largely receded from R12, which is one of the parallel lines constituting the road 1. Further, the line end S4e of the supplemental line segment S4 is a line segment R12 which is one of the parallel lines constituting the road 1, and S4s is a line segment R41 which is one of the parallel lines constituting the road 4, respectively. Are connected. The road 5 is drawn until a line segment R52, which is one of the parallel lines constituting the road 5, is used as a reference for generating a parallel line, until it hits a line segment R12, which is one of the parallel lines constituting the road 1. At that time, since the road 5 collides with the road 1 at a small incident angle, the line segment R51, which is one of the parallel lines constituting the road 5 that has not become a reference for generating parallel lines, constitutes the road 1. It is slightly retracted from R12, which is one of the parallel lines. Further, the line end S5e of the supplemental line segment S5 is a line segment R11 which is one of the parallel lines constituting the road 1, and S5s is a line segment R51 which is one of the parallel lines constituting the road 5, respectively. Are connected.

  In FIG. 5A, R22e which is a line end of a line segment R22 which is one of the parallel lines constituting the road 2 is one of the parallel lines constituting the road 1 due to the connecting portion of the parallel lines and the supplemental lines. R32e which is a line end of a line segment R32 which is one of the parallel lines constituting the road 3 and connected to R12 is connected to R12 which is one of the parallel lines constituting the road 1 and constitutes the road 4 R41e, which is one of the line segments R41, is connected to S4s, which is the line end of the supplemental line segment S4, and is the line end of the line segment R51, which is one of the parallel lines constituting the road 5. R51e is coupled to R12, which is one of the parallel lines constituting the road 1. As a result, the result is as shown in FIG.

  In FIG. 5B, the line end S2s of the supplemental line segment S2 is on the line segment R22 which is one of the parallel lines constituting the road 2, and the other line end S2e of the supplemental line segment S2 is present. Since the line end R22e of the line segment R22 which is one of the parallel lines constituting the road 2 extends in the same direction, R22e is shortened to the position of S2s. The line end S3s of the supplemental line segment S3 is on the line segment R32, which is one of the parallel lines constituting the road 3, and the other line end S3e of the supplemental line segment S3 is parallel to the road 3. Since the line end R32e of the line segment R32 which is one of the lines extends in the same direction, R32e is contracted to the position of S3s. The line end S5s of the supplemental line segment S5 is on the line segment R51, which is one of the parallel lines constituting the road 5, and the other line end S5e of the supplemental line segment S5 is parallel to the road 5. Since the line end R51e of the line segment R51, which is one of the lines, extends in the same direction, R51e is reduced to the position of S5s. As a result, it is as shown in FIG.

=== Small protrusion removal part by phase determination ===
Next, when a parallel line intersects another parallel line with a large incident angle, or when it intersects another parallel line with a small incident angle but a narrow width, one of the original parallel lines is The longest section between the intersections is determined from the situation of the intersection with the parallel lines formed by the intersection with the original parallel line when projecting greatly into the parallel line or penetrating another parallel line. As a reference, a pattern in which the adjacent sections are interrupted and the adjacent sections are not interrupted is analyzed, and the tip portion of the parallel line that is opposite to the pattern is removed.

  For example, since road 1 in FIG. 6A intersects road 2, road 3, road 4, and road 5, line segment R12, which is one of the parallel lines constituting road 1, is determined by the intersection section. The segment can be divided into line segment KL3, line segment KL2, line segment KL1, line segment K0, line segment KR1, line segment KR2, line segment KR3, and line segment KR4. At this time, since the road 2 is at the end of the road 1 and obliquely crosses the road 1, the line segment that is an intersection section at the left end of the line segment R12 that is one of the parallel lines constituting the road 1 KL3 protrudes into the road 2. This line segment KL3 is odd-numbered from the line segment K0 which is the longest section among the sections obtained by dividing the line segment R12, which is one of the parallel lines constituting the road 1, by intersection with other roads. To do. Further, the line segment KL1, the line segment KR1, and the line segment KR3 to be interrupted in the section within the intersection are all odd-numbered. Therefore, it can be determined that the line segment KL3 is also in the intersection and can be removed. As a result, the result is as shown in FIG.

=== Supplemental line type classification part ===
Then, if the supplementary line can be considered that both ends of the supplementary line are both on the line end or line of the same type of parallel line, both ends of the supplemental line are on the line end or line. The same type of parallel lines that can be considered to be the same type, and the other type of supplementary line when the line ends of multiple supplemental lines can be considered to be on the line end or line of the parallel line at the same point Is classified into the same type as parallel lines that can be regarded as line ends or on lines, and both ends of supplemental lines can be regarded as being on line ends or lines of different types of parallel lines. Dividing into two lines by intersecting parallel lines, the line ends that were the line ends of the original supplemental lines are classified into the same type as the parallel lines that can be regarded as being on the line ends or the lines.

  For example, in the line segment S1 of the supplemental line in FIG. 7A, S1s which is the line end of the line segment S1 is at the line end of R11 which is a parallel line constituting the road 1, and at the line end of the line segment S1. A certain S1e is on the line of R31 which is a parallel line constituting the road 3, and both the line end S1s and the line end S1e are coupled to the same type of line, so that the same type as the line segment R11 and the line segment R31. Classify. In the supplemental line segment S3 in FIG. 7A, S3s which is the line end of the line segment S3 is at the line end of R13 which is a parallel line constituting the road 1, and S3e which is the line end of the line segment S3. Are on the line of R33, which is a parallel line constituting the road 3, and the line end S3s and the line end S3e are coupled to the same type of line, and therefore are classified into the same type as the line segment R13 and the line segment R33. . As a result, the result is as shown in FIG.

  For example, S1s which is the line end of the line segment S1 of the supplementary line in FIG. 8A is at the line end of the line segment R11 which is one of the parallel lines constituting the road 1, and the line segment of another supplementary line Since S3s that is the line end of S3 that is the line end is also at the line end of the line segment R11 that is one of the parallel lines constituting the same road 1, the supplemental line segment S1 is the other line end. It is classified into the same type as R31 which is one of the parallel lines composing the road 3 in contact with S1e, and the supplemental line segment S3 is one of the parallel lines composing the road 3 in contact with S3e which is the other line end. And the same type as R33. As a result, the result is as shown in FIG.

  For example, S1s which is the line end of the supplemental line segment S1 in FIG. 9A is located at the line end of the line segment R11 which is one of the parallel lines constituting the road 1, and is another line segment of the supplemental line. Since S3s that is the line end of S3 that is the line end is also at the line end of the line segment R11 that is one of the parallel lines constituting the same road 1, the supplemental line segment S1 is the other line end. It is classified into the same type as R31 which is one of the parallel lines composing the road 3 in contact with S1e, and the supplemental line segment S3 is one of the parallel lines composing the road 3 in contact with S3e which is the other line end. And the same type as R33. As a result, the result is as shown in FIG.

  For example, S3s which is the line end of the supplemental line segment S3 in FIG. 10A is at the line end of the line segment R11 which is one of the parallel lines constituting the road 1, and S3e which is the other line end. Is on the line R33, which is one of the parallel lines constituting the road 3, and is on the line end and line of a different type of line segment. Therefore, the supplemental line segment S3 is changed to the supplemental line segment S3. A line segment including the line end S3s of the supplemental line segment S3 divided by R31 which is one of the parallel lines constituting the intersecting road 3 constitutes the road 1 having the line end S3s. The line segment that is classified into the same type as R11 and includes the line end S3e of the supplementary line segment S3 is divided into the same type as R33 that configures the road 3 where the line end S3e is located. As a result, the result is as shown in FIG.

  For example, S3s which is the line end of the supplemental line segment S3 in FIG. 11A is at the line end of the line segment R11 which is one of the parallel lines constituting the road 1, and S3e which is the other line end. Is located at R33e, which is one end of a line segment R33, which is one of the parallel lines constituting the road 3, both of which are at the line ends of different types of lines. A line segment that is divided by R31, which is one of the parallel lines constituting the road 3 that intersects the line segment S3, and that includes the line end S3s of the line segment S3 of the divided line is a road that has the line end S3s. The line segment that includes the line end S3e of the supplemental line segment S3 is classified into the same type as R33 that configures the road 3 with the line end S3e. Classify. As a result, it becomes as shown in FIG.

=== Figure Integration Unit ===
Next, the parallel line is divided at the intersection of the parallel lines, and it is determined whether it is inside or outside the other parallel line according to the division pattern, and the place that is inside the other parallel line is removed. At the same time, the line removed as the intersection is divided at the intersection with the type of parallel line, and the portion that should not be removed by the division pattern is restored.

  For example, since road 1 in FIG. 12A intersects road 2, road 3, road 4, and road 5, line segment R12, which is one of the parallel lines constituting road 1, is line segment R12. Is divided as a line segment by the intersection of the line end and another parallel line. Intersection point that is the next to both sides of the section between intersection K2 and intersection K3, based on K0 that is the section between intersection K2 and intersection K3, which is the longest segment of the divided line segment A section between K1 and the intersection K2 and a section between the intersection K3 and the intersection K4 can be determined to be within the intersection. Further, a section between the line end R12s of the line segment R12 and the intersection K1, and a section between the intersection K4 and the intersection K5, which are adjacent to each other, can be determined as road sections. Furthermore, the section between the intersection K5 and the intersection K6, which is adjacent to the section between the intersection K4 and the intersection K5, can be determined to be within the intersection. Furthermore, the section between the intersection K5 and the line end R12e of the line segment R12 can be determined as a road section. As a result, when the section in the intersection is removed, the result is as shown in FIG.

  For example, since the road 3 in FIG. 13A is connected to the road 1, R11e which is the tip of the line segment R11 which is one of the parallel lines constituting the road 1, and R12e which is the tip of the line segment R12. , R13e which is the tip of the line segment R13, and R14e which is the tip of the line segment R14. Among the sections divided by the road 1, the intersections R13e and R14e, which are the longest sections, can be removed within the intersection, and the section between the intersection R11e and the intersection R13e, which is a section on both sides of the intersection R13e and the intersection R14e. Can be classified into the same type as the line segment R13, and the section between the intersection R14e and the intersection R12e can be classified into the same type as the line segment R14. As a result, it becomes as shown in FIG.

  For example, since the road 3 in FIG. 14A is connected to the road 1, R11e which is the tip of the line segment R11 which is one of the parallel lines constituting the road 1, and R12e which is the tip of the line segment R12. , And is divided by R13e which is the tip of the line segment R13. Among the sections divided by the road 1, the intersections R13e and R12e, which are the longest sections, can be removed within the intersection, and the section between the intersection R11e and the intersection R13e, which is the section adjacent to the intersection R13e and the intersection R12e. Can be classified into the same type as the line segment R13. As a result, the result is as shown in FIG.

  In the graphic integration unit, line segments that are divided by parallel lines and that are not removed are integrated by the same type.

=== Deformation location replacement part ===
Next, if both ends of the supplementary line can be regarded as coincident with or on the same parallel line, the range of the parallel line is cut off and both line ends can be regarded as coincident. Replace with supplementary lines.

  For example, in FIG. 15A, S2s and S2e which are line ends of the supplemental line segment S2 are on the line R12 which is a parallel line constituting the road 1, and S1s and S1e which are line ends of the supplemental line segment S1. Is on the line R22 which is a parallel line constituting the road 2. As a result, when the parallel lines in the supplemental line portion are replaced with supplemental lines, the result is as shown in FIG.

The invention's effect

  As described above, according to the present invention, it is possible to concentrate on drawing, to draw a plurality of lines at once, and to draw continuously through an intersection, thereby improving efficiency.

  Efficiency can be achieved by automating the shaping processing of the drawn line segments.

  By automatically performing the shaping process, adjacent line figures can be reliably connected by coordinate matching, and the quality of the figure can be ensured.

  By shaping the parallel lines only by expansion and contraction, the parallelism of the figure can be maintained, and the appearance of the figure can be ensured.

  By performing the shaping process automatically, it is possible to perform shaping while taking advantage of the height information obtained at the time of drawing, and it becomes possible to prepare a three-dimensional figure.

It is a figure explaining the drawing result in a parallel line drawing part and a supplementary drawing part. It is a figure explaining the result combined with the parallel line which the line end of the supplementary line adjoins in the joint part of a parallel line and a supplementary line. It is a figure explaining the result of having combined the line end of a plurality of supplemental lines in one place on a parallel line, and connecting the line end of a parallel line to the line end of a supplemental line in the joint part of a parallel line and a supplemental line. . It is a figure explaining the result which the parallel lines couple | bonded in the coupling | bond part of parallel lines. (A)-(c) is the figure explaining the process in which the small unevenness | corrugation of a parallel line is removed in the small protrusion removal part by direction determination. (A), (b) is the figure explaining the process in which the small unevenness | corrugation of a parallel line is removed in the small protrusion removal part by phase determination. (A), (b) explained the classification process in the supplemental line type classification unit when both line ends of the supplementary line can be regarded as being on the line end or line of the same type of parallel line. FIG. (A), (b) is the figure explaining the classification process in the case where it can be considered that the line ends of a plurality of supplemental lines are on the line ends or the lines of the parallel lines at the same point in the supplemental line type classification unit. is there. (A), (b) is the figure explaining the classification process in the case where it can be considered that the line end of a some supplementary line exists in the line end of the parallel line of the same point in a supplemental line type classification | category part. (A), (b) is the figure explaining the classification process in the case where it can be considered that both line ends of the supplementary line are on the line ends or lines of different types of parallel lines in the supplemental line type classification unit. It is. (A), (b) is the figure explaining the classification process in the case where it can be considered that the both ends of a supplementary line exist in the line end of a parallel line of a different kind in a supplemental line type classification | category part. . (A), (b) is the figure explaining the process in which a parallel line is divided | segmented by intersection with another parallel line in a figure integration part. (A), (b) is the figure explaining the process in which the parallel line in an intersection is divided | segmented into an odd number of area in the figure integration part, and is classified into the same classification as the parallel line in an intersection. (A), (b) is the figure explaining the process in which the parallel line in an intersection is divided | segmented into an even number of area in the figure integration part, and is classified into the same classification as the parallel line in an intersection. (A), (b) is a process of replacing a parallel line when both ends of a supplementary line can be regarded as coincident with or on the same parallel line in the deformed portion replacement unit. FIG.

R11 to R13 Line segments constituting parallel lines R11s to R13s Line ends R11e to R13e constituting parallel lines Line ends S1 to S5 constituting parallel lines Supplementary line segments S1s to S5s Supplementary line segments Line ends S1e to S5e Line ends K1 to K6 of supplemental lines Each intersection K0 of parallel lines divided by other parallel lines The longest in each section of parallel lines divided by other parallel lines Sections KL1 to KL3, KR1 to KR4 Each section of parallel lines divided by other parallel lines

Claims (7)

Invention specified by a combination of the following items (1) to (11).
(1) Shapes that have been processed using a line figure database that stores line figures drawn using software for drawing lines and line figures that can be regarded as parallel, and are automatically integrated and modified This is a generation method.
(2) In a line figure, parallel lines drawn in a lump so that a plurality of lines can be regarded as parallel, and the parallel lines are connected when the width or number of parallel lines changes, or the parallel lines are no longer parallel There are supplemental lines for drawing the shape of the part and drawing the updated part of the line figure in the line figure database.
(3) As a parallel drawing unit, from the image having a figure mainly composed of a parallel shape, the number of parallel lines forming the parallel shape is classified, and the shape of the deformed part that is not partially parallel or other Ignores intersections that intersect with parallel lines but have no parallel shape, and draw them as parallel lines all at once. Alternatively, only one of them is drawn, and the other lines are created by parallel copying.
(4) As a supplementary drawing unit, for correcting the shape of a line connecting the parallel lines interrupted because the width is different from the parallel line drawn by the parallel drawing unit, or the shape of a deformed portion that is not partially parallel. Is drawn as a supplementary line.
(5) When a line end of a supplemental line is projected vertically onto an adjacent parallel line or an extension of a parallel line as a joint between the parallel line and the supplemental line, and the line ends of a plurality of supplemental lines are close to each other In this case, the parallel lines are joined to one end, and further, the ends of the parallel lines are expanded and contracted to connect the ends of the parallel lines to the ends of the supplementary lines within a certain expansion / contraction range.
(6) As a connecting portion between parallel lines, by extending or contracting the end of the parallel line, the line end of the parallel line at a point where it intersects with another parallel line or the line end of another parallel line that has been similarly expanded or contracted Join one another or a parallel line onto another parallel line.
(7) As a small protrusion removal part by direction determination, it can be considered that one end of the supplementary line is above the parallel line, and if the other end is close to the line end of the parallel line, A parallel line when the angle formed by the direction from the line end of the supplementary line considered to be above to the line end of the other supplemental line and the direction of the line end of the adjacent parallel line is a depression angle The small protrusion of the parallel line is removed by shrinking the line end of the line to the end of the supplemental line that can be regarded as being above the parallel line.
(8) As a small protrusion removal part by phase determination, when a parallel line intersects another parallel line with a large incident angle, or when it intersects another parallel line having a small incident angle but a narrow width, A pattern of intersections with several parallel lines formed by the intersection of one of the parallel lines with the original parallel line when one of the parallel lines protrudes greatly into another parallel line or penetrates another parallel line To remove the protruding portion.
(9) As a supplemental line type classification unit, when both supplementary lines can be considered to be on the line end or line of parallel lines of the same type, both supplementary line end points Are classified into the same type of parallel lines that can be regarded as line ends or on the line, and the same type, and supplementary when the line ends of multiple supplemental lines can be considered to be on the line ends or lines of the same point. The other end of the line is classified into the same type as the parallel line that can be regarded as being on the line end or on the line, and both line ends of the supplementary line can be regarded as being on the line end or line of a different type of parallel line. In this case, the supplementary line is divided into two parts by intersecting parallel lines, and the line end that was the end of the original supplemental line is of the same type as the parallel line that can be considered to be on the line end or on the line. Classify.
(10) As the figure integration unit, the parallel lines are divided at the intersections of the parallel lines, and it is determined whether the parallel lines are inside or outside the other parallel lines according to the division pattern. While removing the part which existed, the line removed within the intersection is divided | segmented in the intersection part with a parallel line of a kind, and the part which should not be removed by a division | segmentation pattern is restored.
(11) As a deformed part replacement part, when it can be considered that both ends of the supplementary line are coincident with or on the same parallel line, the range of the parallel line is interrupted, Replace with a supplementary line that can be considered a match.   2. The parallel drawing unit according to claim 1, wherein a plurality of lines are made parallel, the width and the number of the parallel lines are changed as appropriate, and the shape of the deformed portion that has become partially non-parallel or the intersection with another parallel line. Ignore the part, draw parallel lines over continuous sections, and in the supplementary drawing part, after the parallel lines are drawn, the part where the width of the parallel lines changed while returning the path where the parallel lines were drawn A drawing method composed of parallel drawing and supplementary drawing, in which a supplementary line connecting the parallel lines is drawn, or the shape of a deformed portion that is not partially parallel is drawn.   In Claim 1, in the small protrusion removal part by direction determination, it can be considered that one of the line ends of a supplementary line exists on a parallel line, and when the other is close to the line end of a parallel line, it is parallel. When the angle formed by the direction from the line end of the supplementary line that can be considered to be above the line to the line end of the other supplemental line and the line end of the adjacent parallel line is a depression angle, A method of removing a small protrusion of a parallel line by shrinking the end of the parallel line to the end of a supplemental line that can be regarded as being above the parallel line.   In Claim 1, in the small protrusion removal part by phase determination, when a parallel line crosses another parallel line with a large incident angle, or when a small incident angle intersects another parallel line with a small width When one of the original parallel lines protrudes greatly into another parallel line or penetrates another parallel line, it intersects with several parallel lines formed by the intersection with the original parallel line. A method of removing a tip portion of parallel lines opposite to this pattern by analyzing a pattern in which the longest section between intersections is used as a reference, and both adjacent sections are interrupted and the adjacent sections are not interrupted.   In claim 1, in the supplemental line type classification unit, when both the ends of the supplemental line can be regarded as being on the line end or the line of the parallel line of the same type, both supplementary lines A classification method in which the line end is the same type as the parallel line of the same type that can be regarded as being on the line end or on the line.   The supplemental line type classification unit according to claim 1, wherein the supplemental line can be regarded as the line end of the plurality of supplemental lines being on the line end or the line of the parallel line at the same point. Is the same type as a parallel line that can be considered to be on the line end or line.   The supplemental line type classification unit according to claim 1, wherein the supplemental line is a parallel that intersects the supplemental line when both ends of the supplemental line can be regarded as being on the line ends or lines of different types of parallel lines. A classification method in which a line end, which is divided by a line and divided into two lines, is the same type as a parallel line that can be regarded as being on the line end or on the line.

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