CN109901833B - Method and terminal for limiting movement of object - Google Patents
Method and terminal for limiting movement of object Download PDFInfo
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- CN109901833B CN109901833B CN201910067539.1A CN201910067539A CN109901833B CN 109901833 B CN109901833 B CN 109901833B CN 201910067539 A CN201910067539 A CN 201910067539A CN 109901833 B CN109901833 B CN 109901833B
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Abstract
The invention provides a method and a terminal for limiting the movement of an object, which comprises the steps of establishing a limiting area, presetting an offset value of the movement of the object, calculating an overlapping area of the object and the limiting area after the object moves according to the offset value in an unlimited state, and determining an actual offset value of the object according to the position of the object and the overlapping area; the trouble of limiting the movement of the object by manually rewriting the code is avoided, so that a universal solution is provided for limiting the movement of the object, and the reusability of the code is improved.
Description
Technical Field
The invention relates to the technical field of information visualization, in particular to a method and a terminal for limiting object movement.
Background
At present, the planar area limitation of the movement of the object in the unity is usually realized by writing codes of a fixed algorithm, but because the area limitation of some specific objects has specificity, the movement of the specific objects cannot be limited by the originally written codes of the fixed algorithm, and therefore, the planar area limitation of the object can be realized only by rewriting the algorithm, so that the reusability of the codes is poor, and the realization of limiting the movement of the object has no universality.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method and the terminal for limiting the movement of the object are provided, and the universality of limiting the movement of the object is realized.
In order to solve the technical problems, the invention adopts a technical scheme that:
a method of limiting movement of an object, comprising:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
s2, determining the actual offset value of the object according to the position of the object and the overlapping area.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a terminal for restricting movement of an object, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
s2, determining the actual offset value of the object according to the position of the object and the overlapping area.
The invention has the beneficial effects that: presetting an offset value of object movement by creating a restricted area, calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state, and determining an actual offset value of the object according to the position of the object and the overlapping area; the trouble of limiting the movement of the object by manually rewriting the code is avoided, so that a universal solution is provided for limiting the movement of the object, and the reusability of the code is improved.
Drawings
FIG. 1 is a flow chart of a method of restricting movement of an object according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a terminal for limiting movement of an object according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a first case of generating a lateral overlap region of a method of restricting movement of an object according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a second case of generating a lateral overlap region according to a method of restricting the movement of an object in accordance with an embodiment of the present invention;
FIG. 5 is a first diagram illustrating a third scenario of generating a lateral overlap region in a method of restricting movement of an object according to an embodiment of the present invention;
FIG. 6 is a second diagram illustrating a third scenario of generating a lateral overlap region in a method of restricting movement of an object according to an embodiment of the present invention;
description of reference numerals:
1. a terminal for restricting movement of an object; 2. a memory; 3. a processor.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the method includes the steps that the overlapping area of the limited area and the object after the object moves in the unrestricted state according to the preset offset value is calculated, and the actual offset value of the object is determined according to the position of the object and the overlapping area, so that a universal solution is provided for limiting the movement of the object.
Referring to fig. 1, a method for limiting the movement of an object includes:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
and S2, determining the actual offset value of the object according to the position of the object and the overlapping area.
From the above description, the beneficial effects of the present invention are: presetting an offset value of object movement by creating a restricted area, calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state, and determining an actual offset value of the object according to the position of the object and the overlapping area; the trouble of limiting the movement of the object by manually rewriting the code is avoided, so that a universal solution is provided for limiting the movement of the object, and the reusability of the code is improved.
Further, the creating a restricted area in S1 includes:
and creating a limit area corresponding to the moving plane type of the object according to the moving plane type of the object, the minimum coordinate point and the maximum coordinate point of the limit area.
As can be seen from the above description, the restriction region corresponding to the movement plane type of the object is created by the movement plane type of the object, the minimum point of the coordinates of the restriction region, and the maximum point of the coordinates, so that the position information of the restriction region can be accurately determined.
Further, the calculating, in S1, an overlapping area of the object after moving according to the offset value in the unrestricted state with the restricted area includes:
judging whether the position to which the object moves in the next frame in the unrestricted state passes through the restricted area or is located in the restricted area according to the offset value;
if so, calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state.
As can be seen from the above description, when the position to which the object moves in the unconstrained state in the next frame passes through the constrained region or is located within the constrained region, the overlapping region between the object and the constrained region after moving in the unconstrained state according to the offset value is calculated, so that the overlapping region can be scientifically calculated, and the reasonableness is high.
Further, the calculating the overlapping area of the object and the restricted area after the object moves according to the offset value in the unrestricted state includes:
respectively calculating a transverse overlapping area and a longitudinal overlapping area of the object and the limited area after the object moves according to the deviation value in an unrestricted state;
and calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state according to the transverse overlapping area and the longitudinal overlapping area.
As can be seen from the above description, determining the overlap region of the object and the limiting region by calculating the transverse overlap region and the longitudinal overlap region improves the stringency and completeness of obtaining the overlap region.
Further, in step S1, there are a plurality of the restricted areas, and each time an overlapping area for a restricted area is generated, the overlapping area is added to the first list;
the S2 includes:
s21, for each overlapping region in the first list, performing:
according to the position of the object and the overlapping area, carrying out welting processing on a limiting area corresponding to the overlapping area, wherein the limiting area after welting processing can limit the object to move along the welting;
calculating an offset value of the limited area after the object moves to the welting according to the position of the object, and adding the offset value into a second list;
and S22, taking the minimum value of the offset values in the second list as the actual offset value of the object.
From the above description, it can be seen that, by the above method, when an object encounters multiple restricted areas, a reasonable solution is provided to obtain a final actual offset value, thereby improving compatibility and universality of restricting the movement of the object in different scenes.
Referring to fig. 2, a terminal for limiting the movement of an object includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
and S2, determining the actual offset value of the object according to the position of the object and the overlapping area.
From the above description, the beneficial effects of the present invention are: presetting an offset value of object movement by creating a restricted area, calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state, and determining an actual offset value of the object according to the position of the object and the overlapping area; the trouble of limiting the movement of the object by manually rewriting the code is avoided, so that a universal solution is provided for limiting the movement of the object, and the reusability of the code is improved.
Further, the creating a restricted area in S1 includes:
and creating a limit area corresponding to the moving plane type of the object according to the moving plane type of the object, the minimum coordinate point and the maximum coordinate point of the limit area.
As can be seen from the above description, the restriction region corresponding to the movement plane type of the object is created by the movement plane type of the object, the minimum point of the coordinates of the restriction region, and the maximum point of the coordinates, so that the position information of the restriction region can be accurately determined.
Further, the calculating, in S1, an overlapping area of the object after moving according to the offset value in the unrestricted state with the restricted area includes:
judging whether the position to which the object moves in the next frame in the unrestricted state passes through the restricted area or is located in the restricted area according to the offset value;
if so, calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state.
As can be seen from the above description, when the position to which the next frame of the object moves in the unrestricted state passes through the restricted area or is located within the restricted area, the overlapping area between the object and the restricted area after moving in the unrestricted state according to the offset value is calculated, so that the overlapping area can be calculated scientifically, and the reasonableness is high.
Further, the calculating the overlapping area of the object and the restricted area after the object moves according to the offset value in the unrestricted state includes:
respectively calculating a transverse overlapping area and a longitudinal overlapping area of the object and the limited area after the object moves according to the deviation value in an unrestricted state;
and calculating the overlapping area of the object and the limited area after the object moves according to the offset value in an unrestricted state according to the transverse overlapping area and the longitudinal overlapping area.
As can be seen from the above description, determining the overlap region of the object and the restricted area by calculating the transverse overlap region and the longitudinal overlap region improves the stringency and completeness of acquisition of the overlap region.
Further, in step S1, there are a plurality of the restricted areas, and each time an overlapping area for a restricted area is generated, the overlapping area is added to the first list;
the S2 includes:
s21, for each overlapping region in the first list, performing:
according to the position of the object and the overlapping area, carrying out welting processing on a limiting area corresponding to the overlapping area, wherein the limiting area after welting processing can limit the object to move along the welting;
calculating an offset value of the limited area after the object moves to the welting according to the position of the object, and adding the offset value into a second list;
and S22, taking the minimum value of the offset values in the second list as the actual offset value of the object.
From the above description, it can be known that, by the above method, when an object encounters multiple restricted areas, a reasonable solution is provided to obtain a final actual offset value, so that compatibility and universality of restricting the movement of the object in different scenes are improved.
Example one
Referring to fig. 1 and fig. 3 to 6, a method for limiting movement of an object includes:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
wherein the creating a restricted area comprises:
creating a limit area corresponding to the moving plane type of the object according to the moving plane type of the object, the minimum coordinate point and the maximum coordinate point of the limit area;
specifically, the specific steps of creating the restricted area are as follows:
(1) defining a self-defining type AreaInfo, wherein the AreaInfo is used for storing information of a limited area and comprises a coordinate minimum point, a coordinate maximum point, an actual limited area minimum point and an actual limited area maximum point;
(2) encapsulating a class LimitAreaSpeedCalculator, where the Limited area set includes a Mobile plane type PlaneType and a restricted area, for example, if the set is defined as Dictionary, the specific format of the set may be: dictionary < PlaneType, Dictionary < int, AreaInfo > >;
(3) creating restricted area information through the type of the mobile plane, the minimum point of the coordinates and the maximum point of the coordinates; the moving plane types comprise three moving plane types of an XY plane, a YZ plane and an XZ plane based on Unity world coordinates; since the movement of the object is on the plane, the corresponding restricted area is also a two-dimensional area, such as: if the type of the moving plane of the object is an XY plane, the minimum coordinate point of the restricted area may be (x1, y1), and the maximum coordinate point may be (x2, y2), and according to the type of the moving plane of the minimum coordinate point, the maximum coordinate point and the XY plane, the rectangular restricted area on the moving plane may be formed as a rectangle enclosed by a straight line x-x 1, x-x 2, y-y 1, and y-y 2;
(4) when an object moves, acquiring bounding box information of the object through a Unity physical system collator, calculating the collision volume of the object to obtain the position information of the object of a current frame, and obtaining the actual limiting area position information of all limiting areas in the limiting area set according to the position information of the object of the current frame, wherein the calculation formula is as follows:
the minimum point of the actual limited area coordinate is the position of the object of the current frame relative to the father object plus the minimum point of the coordinate;
the maximum coordinate point of the actual limited area is the position of the object relative to the parent object of the current frame plus the maximum coordinate point;
wherein the position of the object relative to the parent object in the current frame is represented as: the position of the object in the current frame relative to the parent object coordinate (0,0,0) is determined so that the position of the limited area can follow the position of the object in the current frame relative to the parent object to adjust the position information; when the parent object of the object does not exist, the position of the object relative to the parent object in the current frame is set to (0,0, 0).
Wherein calculating an overlapping area of the object with the restricted area after moving according to the offset value in the unrestricted state comprises:
judging whether the position to which the object moves in the next frame in the unrestricted state passes through the restricted area or is located in the restricted area according to the offset value;
if so, calculating an overlapping area between the object and the limited area after the object moves according to the offset value in the unrestricted state;
wherein calculating an overlapping area of the object with the restricted area after moving according to the offset value in the unrestricted state further comprises: respectively calculating a transverse overlapping area and a longitudinal overlapping area of the object and the limited area after the object moves according to the deviation value in an unrestricted state;
calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state according to the transverse overlapping area and the longitudinal overlapping area;
wherein the object has three conditions with the transverse overlapping area of the restricted area after moving according to the offset value in the unrestricted state, which are respectively:
referring to fig. 3, the first case is: the object is positioned at the left side of the restricted area and moves towards the restricted area, and the position to which the next frame moves in the unrestricted state is positioned in the restricted area;
referring to fig. 4, the second case is: the object is positioned at the right side of the limited area and moves towards the limited area, and the position to which the next frame moves in the unrestricted state is positioned in the limited area;
referring to fig. 5 and fig. 6, the third situation is: the object is located on the left side of the restricted area and moves towards the restricted area, and the position to which the next frame moves in the unrestricted state passes through the restricted area, or the object is located on the right side of the restricted area and moves towards the restricted area, and the position to which the next frame moves in the unrestricted state passes through the restricted area;
the three conditions of the longitudinal overlapping area of the object and the limited area after the object moves according to the deviant in the unrestricted state are basically consistent with the conditions of the transverse overlapping area, and the judgment of the transverse position of the x axis is changed into the judgment of the longitudinal position of the y axis, which is not described again;
s2, determining an actual offset value of the object according to the position of the object and the overlapping area;
in step S1, there are a plurality of the restricted areas, and each time an overlapping area for a restricted area is generated, the overlapping area is added to the first list;
wherein the S2 includes:
s21, for each overlapping region in the first list, performing:
according to the position of the object and the overlapping area, carrying out welting treatment on a limiting area corresponding to the overlapping area, wherein the limiting area after welting treatment can limit the object to move along the welting, so that the object is prevented from entering the limiting area;
calculating an offset value of the limited area after the object moves to the welting according to the position of the object, and adding the offset value into a second list;
specifically, the motion trajectory of the object may be calculated according to a position of the object at the current frame to a position at which the object moves to the border of the restriction area from the next frame, and if the motion trajectory is that the object moves from left to right to the border of the restriction area, the offset value is set as the left side of the restriction area, otherwise, the offset value is set as the right side of the restriction area; if the motion trail is that the object moves from bottom to top to the welt of the restricted area, setting the offset value to be the lower side of the restricted area, and conversely, setting the offset value to be the upper side of the restricted area;
and S22, taking the minimum value of the offset values in the second list as the actual offset value of the object.
Wherein the actual offset value is the position actually reached by the object when moving towards the restricted area.
Example two
Referring to fig. 2, a terminal 1 for limiting the movement of an object includes a memory 2, a processor 3 and a computer program stored in the memory 2 and running on the processor 3, wherein the processor 3 implements the steps of the first embodiment when executing the computer program.
In summary, the method and the terminal for limiting the movement of the object provided by the present invention, by creating a limited region, presetting an offset value of the movement of the object, and calculating an overlapping region between the object and the limited region after moving according to the offset value in an unrestricted state, specifically: when the position to which the next frame of the object moves in the unrestricted state passes through the restricted area or is located in the restricted area, calculating an overlapping area of the object and the restricted area after the object moves in the unrestricted state according to the offset value, wherein the overlapping area of the restricted area is obtained by calculating a transverse overlapping area and a longitudinal overlapping area, and the calculated overlapping area is high in rigor and reasonable in method; and finally, determining the actual offset value of the object according to the position of the object and the overlapping area, and avoiding the trouble of limiting the movement of the object by manually rewriting codes, thereby providing a general solution for limiting the movement of the object and improving the reusability of the codes.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (6)
1. A method of limiting movement of an object, comprising:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
s2, determining an actual offset value of the object according to the position of the object and the overlapping area;
calculating an overlapping area of the object moved according to the offset value in the unrestricted state with the restricted area in S1 includes:
judging whether the position to which the object moves in the next frame in the unrestricted state passes through the restricted area or is located in the restricted area according to the offset value;
if so, calculating an overlapping area between the object and the limited area after the object moves according to the offset value in the unrestricted state;
in step S1, there are multiple restricted areas, and each time an overlapping area for a restricted area is generated, the overlapping area is added to the first list;
the S2 includes:
s21, for each overlapping region in the first list, performing:
according to the position of the object and the overlapping area, carrying out welting processing on a limiting area corresponding to the overlapping area, wherein the limiting area after welting processing can limit the object to move along the welting;
calculating an offset value of the limited area after the object moves to the welting according to the position of the object, and adding the offset value into a second list;
and S22, taking the minimum value of the offset values in the second list as the actual offset value of the object.
2. The method of limiting the movement of an object according to claim 1, wherein the creating a limiting area in S1 comprises:
and creating a limit area corresponding to the moving plane type of the object according to the moving plane type of the object, the minimum coordinate point and the maximum coordinate point of the limit area.
3. The method of any of claims 1 to 2, wherein the calculating the overlapping area of the object with the restricted area after moving according to the offset value in the unrestricted state comprises:
respectively calculating a transverse overlapping area and a longitudinal overlapping area of the object and the limited area after the object moves according to the deviation value in an unrestricted state;
and calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state according to the transverse overlapping area and the longitudinal overlapping area.
4. A terminal for restricting movement of an object, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of:
s1, creating a restricted area, presetting an offset value of the movement of the object, and calculating an overlapping area of the object and the restricted area after the object moves according to the offset value in an unrestricted state;
s2, determining an actual offset value of the object according to the position of the object and the overlapping area;
calculating an overlapping area of the object moved according to the offset value in the unrestricted state with the restricted area in S1 includes:
judging whether the position to which the object moves in the next frame in the unrestricted state passes through the restricted area or is located in the restricted area according to the offset value;
if so, calculating an overlapping area between the object and the limited area after the object moves according to the offset value in the unrestricted state;
in step S1, there are a plurality of the restricted areas, and each time an overlapping area for a restricted area is generated, the overlapping area is added to the first list;
the S2 includes:
s21, for each overlapping region in the first list, performing:
according to the position of the object and the overlapping area, carrying out welting processing on a limiting area corresponding to the overlapping area, wherein the limiting area after welting processing can limit the object to move along the welting;
calculating an offset value of the limited area after the object moves to the welting according to the position of the object, and adding the offset value into a second list;
and S22, taking the minimum value of the offset values in the second list as the actual offset value of the object.
5. The terminal for limiting the movement of an object according to claim 4, wherein the creating a limiting area in S1 comprises:
and creating a limit area corresponding to the moving plane type of the object according to the moving plane type of the object, the minimum coordinate point and the maximum coordinate point of the limit area.
6. The terminal for limiting the movement of an object according to any one of claims 4 to 5, wherein the calculating the overlapping area of the object with the limiting area after the object moves according to the offset value in the unrestricted state comprises:
respectively calculating a transverse overlapping area and a longitudinal overlapping area of the object and the limited area after the object moves according to the deviation value in an unrestricted state;
and calculating the overlapping area of the object and the limited area after the object moves according to the offset value in the unrestricted state according to the transverse overlapping area and the longitudinal overlapping area.
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| CN106251397B (en) * | 2016-08-03 | 2019-07-12 | 上海同筑信息科技有限公司 | Frame choosing method and system based on BIM model |
| CN108229307B (en) * | 2017-11-22 | 2022-01-04 | 北京市商汤科技开发有限公司 | Method, device and equipment for object detection |
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