CN105488261B - Method and device for simulating line segments in real time - Google Patents
Method and device for simulating line segments in real time Download PDFInfo
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- CN105488261B CN105488261B CN201510830449.5A CN201510830449A CN105488261B CN 105488261 B CN105488261 B CN 105488261B CN 201510830449 A CN201510830449 A CN 201510830449A CN 105488261 B CN105488261 B CN 105488261B
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Abstract
The invention discloses a method and a device for simulating a line segment in real time, and belongs to the field of communication. The method comprises the following steps: two points are determined on the screen in the Ventuz system; generating a two-dimensional rectangular model, setting the length between two points matched with the attributes of the model and the angle coordinate of a polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points; detecting whether the two points move in real time; when the point in the two points is detected to move, the attribute of the model is adjusted to match the length between the two moved points and the angle coordinate of the polar coordinate system, so that the model simulates the line segment of the end point after the movement in real time. The device comprises: the device comprises a determining module, an initial simulation module, a detection module and a real-time simulation module. The simulation method realizes the simulation of the line segment in the Ventuz system and solves the problem that no line exists in the Ventuz system.
Description
Technical Field
The invention relates to the field of communication, in particular to a method and a device for simulating a line segment in real time.
Background
Ventuz (vietz) is a real-time image content creation, editing and presentation control software. It is dedicated to the production of high-end audiovisual content, including professional display, video wall installation, live site display and interaction, multi-touch applications, and studios and broadcasts. The Ventuz has strong design and simple and convenient use, can be applied to video walls, projection mapping and broadcast television online packaging, and can realize interactive use with almost all interactive devices.
In the Ventuz system, there is no concept of lines, and many functions are performed by models, controls, and the like. Therefore, how to simulate a line segment by using the existing tool is an urgent problem to be solved.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for simulating a line segment in real time, so as to realize the simulation of the line segment in the Ventuz system. The technical scheme is as follows:
in one aspect, the present invention provides a method for simulating a line segment in real time, where the method includes:
two points are determined on the screen in the Ventuz system;
generating a two-dimensional rectangular model, acquiring coordinates of the two points, and calculating the length between the two points and the angle coordinates of the two point polar coordinate systems according to the coordinates of the two points;
setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the angular coordinates of the polar coordinate system of two vertexes on the long side of the model as the calculated angular coordinates, so that the model simulates the line segment with the two points as end points;
detecting whether the two points move in real time;
when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time.
Wherein, calculate the length between two stated points according to the coordinate of two stated points, include:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
Wherein, the angle coordinate of the polar coordinate system of the two points is calculated according to the coordinates of the two points, including:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radians.
Wherein the method further comprises:
and respectively placing a model with a specified size on the two points, and moving along with the movement of the two points.
In another aspect, the present invention further provides a device for simulating a line segment in real time, where the device includes:
a determining module for determining two points on a screen in a Ventuz system;
an initial simulation module comprising:
a generating unit for generating a two-dimensional rectangular model;
the calculating unit is used for acquiring the coordinates of the two points and calculating the length between the two points and the angle coordinates of the polar coordinate system of the two points according to the coordinates of the two points;
the setting unit is used for setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the angular coordinates of the polar coordinate system of the two vertexes on the long side of the model as the calculated angular coordinates, so that the model simulates the line segment with the two points as end points;
the detection module is used for detecting whether the two points move in real time;
and the real-time simulation module is used for adjusting the length between the two points and the angle coordinate of the polar coordinate system after the attribute of the model is matched with the movement when the detection module detects that the point in the two points moves, so that the model simulates the line segment after the endpoint moves in real time.
Wherein the computing unit is to:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
Wherein the computing unit is to:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radians.
Wherein the apparatus further comprises:
and the setting module is used for respectively placing a model with a specified size on the two points and moving along with the movement of the two points.
The technical scheme provided by the invention has the beneficial effects that: by determining two points on the screen in the Ventuz system; generating a two-dimensional rectangular model, setting the attribute of the model to match the length between the two points and the angle coordinate of the polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points; detecting whether the two points move in real time; when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time, the simulation of the line segment in the Ventuz system is realized, and the problem that no line exists in the Ventuz system is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for simulating a line segment in real time according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for simulating a line segment in real time according to another embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the effect of simulating line segments in real time according to another embodiment of the present invention;
FIG. 4 is a diagram illustrating the effect of simulating line segments in real time according to another embodiment of the present invention;
fig. 5 is a block diagram of an apparatus for real-time simulation of line segments according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a method for simulating a line segment in real time, including:
101: two points are determined on the screen in the Ventuz system;
the two points are any two points as long as they are not coincident, and are not limited herein.
102: generating a two-dimensional rectangular model, setting the attribute of the model to match the length between the two points and the angle coordinate of the polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points;
the two-dimensional rectangular model has a default length and width at the beginning, and the specific numerical value is not limited. In this embodiment, the length of the model is used to simulate the line segment, and the width is used to simulate the thickness, i.e., the width, of the line segment.
The attribute of the model is matched with the lengths of the two points and the angle coordinates of the polar coordinate system, namely the length of the model is equal to the lengths of the two points, and the angle coordinates of the polar coordinate system between two opposite corners of the model are equal to the angle coordinates of the polar coordinate system of the two points, so that the model can be ensured to simulate a line segment between the two points.
103: detecting whether the two points move in real time;
wherein, can judge the removal of point through detecting whether the coordinate of two points changes, include: a change in X-axis coordinates and/or a change in Y-axis coordinates.
104: when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time.
Wherein, no matter one point of the two points moves or the two points move simultaneously, the attribute of the model is adjusted. The attribute of the model is adjusted to match the lengths of the two moved points and the angle coordinate of the polar coordinate system, so that the stretching and/or rotation of the line segment between the two points is simulated, and the effect of simulating the line segment in real time is achieved.
In this embodiment, optionally, the setting that the attribute of the model matches the length between the two points and the angle coordinate of the polar coordinate system, so that the model simulates a line segment with the two points as end points includes:
acquiring coordinates of the two points, and calculating the length between the two points and the angle coordinates of the polar coordinate system of the two points according to the coordinates of the two points;
setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, setting the polar coordinate system angle coordinates of two vertexes on the long side of the model as the calculated angle coordinates, and enabling the model to simulate the line segment with the two points as end points.
In this embodiment, optionally, calculating the length between the two points according to the coordinates of the two points includes:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
In this embodiment, optionally, the calculating the angular coordinates of the two point polar coordinate systems according to the coordinates of the two points includes:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radian.
In this embodiment, optionally, the method further includes:
a model with a specified size is placed on each of the two points and moves along with the movement of the two points.
In the method provided by the embodiment, two points are determined on the screen in the Ventuz system; generating a two-dimensional rectangular model, setting the attribute of the model to match the length between the two points and the angle coordinate of the polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points; detecting whether the two points move in real time; when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time, the simulation of the line segment in the Ventuz system is realized, and the problem that no line exists in the Ventuz system is solved.
Referring to fig. 2, another embodiment of the present invention provides a method for simulating a line segment in real time, including:
201: two points are determined on the screen in the Ventuz system;
202: generating a two-dimensional rectangular model;
203: acquiring coordinates of the two points, and calculating the length between the two points and the angle coordinates of the polar coordinate system of the two points according to the coordinates of the two points;
wherein, calculating the length between the two points according to the coordinates of the two points may include:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
For example, two points determined on the screen are respectively a (x1, y1) and B (x2, y2), and the length between the two points is calculated
Wherein, calculating the angular coordinates of the two point polar coordinate systems according to the coordinates of the two points may include:
calculating the radians of the two points according to the coordinates of the two points; and calculating the angle coordinates of the two point polar coordinate systems according to the radian.
For example, if the coordinates of two points defined on the screen are a (x1, y1) and B (x2, y2), respectively, then the radian ═ math.acos [ (x2-x1)/d ], where d is the length between the AB two points calculated as described above, can be determined by the math.acos method. And converting the radian into an angle theta of 180 DEG × radian/pi, thereby obtaining an angle coordinate theta of the two-point AB polar coordinate system.
204: setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the angular coordinates of the polar coordinate system of two vertexes on the long side of the model as the calculated angular coordinates, so that the model simulates a line segment with the two points as end points;
the line segment width can be set as required, and the specific numerical value is not limited.
205: detecting whether the two points move in real time;
206: when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time.
After the attributes of the model are adjusted, the length of the model is equal to the length of the two points after the model is moved, and the angle coordinate of the polar coordinate system between two opposite corners of the model is equal to the angle coordinate of the polar coordinate system of the two points after the model is moved, so that the model can be guaranteed to simulate the line segment between the two points in real time. If the length of the two points is increased after moving, the line segment is elongated, and if the length is decreased, the line segment is compressed. If the angular coordinates of the two point polar coordinate systems are not changed, the line segment is not rotated, and if the angular coordinates of the two point polar coordinate systems are changed, the line segment is rotated.
In this embodiment, optionally, the method further includes:
a model with a specified size is placed on each of the two points and moves along with the movement of the two points.
The specified size may be set according to needs, such as a square with a fixed side length, or a circle with a fixed radius, and the like, and the two models placed at the two points may be the same or different, and are not limited herein.
Referring to fig. 3, a schematic diagram of an effect of simulating a line segment in real time according to another embodiment of the present invention is provided. The upper graph is a two-dimensional rectangular model generated initially. The middle graph is the model obtained by setting the length of the model as the length of two points determined on the screen and setting the width of the model as the width of a line segment. The lower graph is a model obtained by setting the angular coordinates of the polar coordinate systems of the two opposite angular vertexes of the model to calculate the angular coordinates of the polar coordinate systems of the two points on the screen on the basis of the middle graph, namely, simulating a line segment between the two points.
Referring to fig. 4, a schematic diagram of an effect of simulating a line segment in real time according to another embodiment of the present invention is provided. Wherein, the points 1 and 2 are two points determined on the screen in the Ventuz system, and the length between the two points and the angle coordinate of the polar coordinate system are calculated according to the coordinates of the points 1 and 2. A two-dimensional rectangular model is generated, the model length is set as the calculated length between two points, and the angular coordinates of the polar coordinate systems of two diagonal vertices of the model are set as the calculated angular coordinates of the polar coordinate systems between two points, thereby simulating a line segment between points 1 and 2. And sets the width of the line segment to a default line segment width, typically thinner, as shown. Furthermore, two square models can be respectively arranged at two ends of the line segment, the two models respectively take the point 1 and the point 2 as centers, and the side lengths are equal, so that the line segment is more attractive. And (3) detecting whether the points 1 and 2 move in real time, detecting that the point 1 moves to the point 3, and detecting that the point 2 moves to the point 4, and calculating the length between the points 3 and 4 and the angle coordinate of the polar coordinate system according to the coordinates of the points 3 and 4. The length of the rectangular model is set to be the length between points 3 and 4, and the angular coordinates of the polar coordinate system between the diagonal vertices of the rectangular model are set to be the angular coordinates of the polar coordinate system between points 3 and 4, so that the model simulates a line segment between points 3 and 4. In addition, the square models at points 1 and 2 are also added to points 3 and 4, and the effect that the square also moves along with the movement of the points is simulated. Because the detection and the calculation are carried out in real time, the simulated line segment is dynamically changed along with the movement of the two end points, and the effect of dynamically and real-timely simulating the line segment between the two points is achieved.
In the method provided by the embodiment, two points are determined on the screen in the Ventuz system; generating a two-dimensional rectangular model, setting the attribute of the model to match the length between the two points and the angle coordinate of the polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points; detecting whether the two points move in real time; when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time, the simulation of the line segment in the Ventuz system is realized, and the problem that no line exists in the Ventuz system is solved.
Referring to fig. 5, another embodiment of the present invention provides an apparatus for simulating a line segment in real time, including:
a determining module 501, configured to determine two points on a screen in a Ventuz system;
an initial simulation module 502, configured to generate a two-dimensional rectangular model, set an attribute of the model to match a length between the two points and an angle coordinate of the polar coordinate system, so that the model simulates a line segment using the two points as end points;
a detecting module 503, configured to detect whether the two points move in real time;
a real-time simulation module 504, configured to, when the detection module detects that a point in the two points moves, adjust an attribute of the model to match a length between the two points after the movement and an angle coordinate of the polar coordinate system, so that the model simulates the line segment after the endpoint moves in real time.
In this embodiment, optionally, the initial simulation module includes:
a generating unit for generating a two-dimensional rectangular model;
the calculating unit is used for acquiring the coordinates of the two points and calculating the length between the two points and the angle coordinates of the polar coordinate system of the two points according to the coordinates of the two points;
and the setting unit is used for setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the polar coordinate system angle coordinates of two vertexes on the long side of the model as the calculated angle coordinates so that the model simulates the line segment with the two points as end points.
In this embodiment, optionally, the calculating unit is configured to:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
In this embodiment, optionally, the calculating unit is configured to:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radian.
In this embodiment, optionally, the apparatus further includes:
and the setting module is used for respectively placing a model with a specified size on the two points and moving along with the movement of the two points.
The apparatus provided in this embodiment may perform the method provided in any of the above method embodiments, and the detailed process is described in the method embodiments and is not described herein again.
The device provided by the embodiment determines two points on the screen in the Ventuz system; generating a two-dimensional rectangular model, setting the attribute of the model to match the length between the two points and the angle coordinate of the polar coordinate system, and enabling the model to simulate a line segment taking the two points as end points; detecting whether the two points move in real time; when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time, the simulation of the line segment in the Ventuz system is realized, and the problem that no line exists in the Ventuz system is solved.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A method of simulating a line segment in real time, the method comprising:
two points are determined on the screen in the Ventuz system;
generating a two-dimensional rectangular model, acquiring coordinates of the two points, and calculating the length between the two points and the angle coordinates of the two point polar coordinate systems according to the coordinates of the two points;
setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the angular coordinates of the polar coordinate system of two vertexes on the long side of the model as the calculated angular coordinates, so that the model simulates the line segment with the two points as end points;
detecting whether the two points move in real time;
when the point in the two points is detected to move, adjusting the attribute of the model to match the length between the two points after the movement and the angle coordinate of the polar coordinate system, so that the model simulates the line segment after the end point moves in real time.
2. The method of claim 1, wherein calculating the length between the two points from the coordinates of the two points comprises:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
3. The method of claim 1, wherein said calculating angular coordinates of said two-point polar coordinate system from coordinates of said two points comprises:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radians.
4. The method of claim 1, further comprising:
and respectively placing a model with a specified size on the two points, and moving along with the movement of the two points.
5. An apparatus for simulating a line segment in real time, the apparatus comprising:
a determining module for determining two points on a screen in a Ventuz system;
an initial simulation module comprising:
a generating unit for generating a two-dimensional rectangular model;
the calculating unit is used for acquiring the coordinates of the two points and calculating the length between the two points and the angle coordinates of the polar coordinate system of the two points according to the coordinates of the two points;
the setting unit is used for setting the width of the model as the width of a line segment, setting the length of the model as the calculated length, and setting the angular coordinates of the polar coordinate system of the two vertexes on the long side of the model as the calculated angular coordinates, so that the model simulates the line segment with the two points as end points;
the detection module is used for detecting whether the two points move in real time;
and the real-time simulation module is used for adjusting the length between the two points and the angle coordinate of the polar coordinate system after the attribute of the model is matched with the movement when the detection module detects that the point in the two points moves, so that the model simulates the line segment after the endpoint moves in real time.
6. The apparatus of claim 5, wherein the computing unit is configured to:
and calculating the length between the two points by using the pythagorean theorem and the coordinates of the two points.
7. The apparatus of claim 5, wherein the computing unit is configured to:
calculating the radians of the two points according to the coordinates of the two points;
and calculating the angle coordinates of the two point polar coordinate systems according to the radians.
8. The apparatus of claim 5, further comprising:
and the setting module is used for respectively placing a model with a specified size on the two points and moving along with the movement of the two points.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101051390A (en) * | 2007-05-15 | 2007-10-10 | 北京金山软件有限公司 | Method and system for simulating river |
| CN103854008A (en) * | 2012-12-04 | 2014-06-11 | 株式会社理光 | Road surface detection method and device |
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| US7362325B2 (en) * | 2004-12-21 | 2008-04-22 | Qualcomm Incorporated | 2D/3D line rendering using 3D rasterization algorithms |
| CN103940375B (en) * | 2014-04-14 | 2016-10-05 | 珠海金山网络游戏科技有限公司 | A kind of measure the method for angle, device and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101051390A (en) * | 2007-05-15 | 2007-10-10 | 北京金山软件有限公司 | Method and system for simulating river |
| CN103854008A (en) * | 2012-12-04 | 2014-06-11 | 株式会社理光 | Road surface detection method and device |
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