CN108898654B - Moving method and system of three-dimensional object - Google Patents
Moving method and system of three-dimensional object Download PDFInfo
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Abstract
The invention relates to a method and a system for moving a three-dimensional object, wherein the method comprises the following steps: acquiring the moving direction and the moving distance of a first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model moves first in three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves; when the first segmented model moves under a second frame, sequentially moving segmented models behind the first segmented model under the second frame according to the moving direction and the moving distance, wherein the second frame and the first frame are adjacent time frames. The invention can ensure that the moving track of the three-dimensional object is more vivid and natural.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a system for moving a three-dimensional object.
Background
In games, it is necessary to calculate the trajectory curve of an object, and at present, a specific function curve is mainly used to calculate the trajectory curve. However, in this way, the trajectory curve of the motion behavior of some objects is difficult to calculate by using a specific function curve. For example, in the greedy snake game, the initial greedy snake game only has four directions, and when the greedy snake game moves each time, the pixel points at the last tail position are taken right ahead of the current moving direction, and when the greedy snake game turns around each time, the moving direction of the pixel points at the tail position is only controlled.
However, in the above-described moving method, only simple displacements in four directions can be moved, and the body of the subsequent pixel point cannot be rotated during the movement. Therefore, at present, if a 3D trajectory of a corresponding object is displayed in a game, it is impossible to make the 3D effect of the object more realistic.
Disclosure of Invention
Based on this, it is necessary to provide a method and a system for moving a three-dimensional object, aiming at the problem that the three-dimensional trajectory of the object cannot be accurately calculated at present.
A method of moving a three-dimensional object, the method comprising:
acquiring the moving direction and the moving distance of a first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model moves first in three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves;
when the first segmented model moves under a second frame, sequentially moving segmented models behind the first segmented model under the second frame according to the moving direction and the moving distance, wherein the second frame and the first frame are adjacent time frames.
Preferably, the first segmented model of the three-dimensional object precedes the moving direction and the moving distance of the first frame, and the method further comprises:
dividing the object into a plurality of sections;
constructing a three-dimensional segmented model for each segment of the object;
connecting each segmented model according to the connection relation between each segment of the object;
and generating the three-dimensional object according to the connected segmented models.
Preferably, the dividing the object into a plurality of segments includes:
the object is divided into a head, a middle and a tail.
Preferably, the connecting each of the segment models according to the connection relationship between each segment of the object includes:
determining the position relation between each segmented model according to the position relation between each segment of the object;
and connecting each segmented model according to the connection node relation between each segment of the object and the position relation between each segmented model.
Preferably, the acquiring a moving direction and a moving distance of the first segmented model of the three-dimensional object in the first frame includes:
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segmentation model under the first frame;
and calculating the moving distance of the first section model under the first frame according to the moving speed of the first section model under the first frame.
A system for moving a three-dimensional object, the system comprising:
the acquisition module is used for acquiring the moving direction and the moving distance of the first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model moves first in three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves;
and a moving module, configured to, when the first segment model moves in a second frame, sequentially move segment models subsequent to the first segment model in the second frame according to the moving direction and the moving distance, where the second frame and the first frame are adjacent time frames.
Preferably, the system further comprises:
the dividing module is used for dividing the object into a plurality of sections;
a construction module for constructing a three-dimensional segmented model for each segment of the object;
the connection module is used for connecting each segmented model according to the connection relation between each segment of the object;
and the generation module is used for generating the three-dimensional object according to the connected segmented models.
Preferably, the dividing module is configured to:
the object is divided into a head, a middle and a tail.
Preferably, the connection module is configured to:
determining the position relation between each segmented model according to the position relation between each segment of the object;
and connecting each segmented model according to the connection node relation between each segment of the object and the position relation between each segmented model.
Preferably, the obtaining module is configured to:
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segmentation model under the first frame;
and calculating the moving distance of the first segmentation model under the first frame according to the moving speed of the first segmentation model under the first frame.
In the above embodiment of the present invention, the three-dimensional object is a three-dimensional segmented model, when the three-dimensional object moves, a moving direction and a moving distance of a first segmented model of the three-dimensional object in a first frame may be obtained first, where the first segmented model is a segmented model that moves first in the three-dimensional segmented model of the three-dimensional object when the three-dimensional object moves along the moving direction, and the first frame is any one frame when the three-dimensional object moves; in this way, when the three-dimensional object moves, the movement distance in the movement direction of the first segmented model in which the three-dimensional object moves first may be acquired first; then, when the three-dimensional object moves under a second frame, wherein the second frame and the first frame are adjacent time frames, the segmented models after the first segmented model can be sequentially moved under the second frame according to the acquired moving direction and moving distance, so that the movement of the three-dimensional object is realized according to the movement of each segmented model, and the moving direction and moving distance of each segmented model are the same, so that the moving track of the three-dimensional object is more vivid and natural.
Drawings
FIG. 1 is a flow chart of a method of moving a three-dimensional object according to an embodiment;
fig. 2 is a block diagram of a moving system of a three-dimensional object according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a flowchart of a moving method of a three-dimensional object according to an embodiment. As shown in fig. 1, the method includes:
and 140, when the first segmented model moves under a second frame, sequentially moving segmented models behind the first segmented model under the second frame according to the moving direction and the moving distance.
In the above embodiment of the present invention, the three-dimensional object is a three-dimensional segmented model, when the three-dimensional object moves, a moving direction and a moving distance of a first segmented model of the three-dimensional object in a first frame may be obtained first, where the first segmented model is a segmented model that moves first in the three-dimensional segmented model of the three-dimensional object when the three-dimensional object moves along the moving direction, and the first frame is any one frame when the three-dimensional object moves; thus, when the three-dimensional object moves, the moving distance in the moving direction of the first segmented model in which the three-dimensional object first moves can be obtained first; then, when the three-dimensional object moves under a second frame, wherein the second frame and the first frame are adjacent time frames, the segmented models behind the first segmented model can be sequentially moved under the second frame according to the acquired moving direction and moving distance, so that the movement of the three-dimensional object is realized according to the movement of each segmented model, and the moving direction and moving distance of each segmented model are the same, so that the moving track of the three-dimensional object is more vivid and natural.
In a three-dimensional game scene, if the movement of a three-dimensional object can only be performed according to four simple directions, the three-dimensional representation of the object can be greatly weakened, and the movement of the three-dimensional object looks relatively stiff. In order to make the movement of the three-dimensional object in the three-dimensional game scene more vivid and natural, the specific scheme of the embodiment may be implemented based on the specific content of the embodiment.
For three-dimensional objects in a three-dimensional game scene, such as three-dimensional objects like snakes and earthworms, the three-dimensional objects can be constructed first to form the three-dimensional objects required by the embodiment. It should be noted that the three-dimensional objects in the present embodiment are specifically three-dimensional objects connected by segmented models.
In an implementation manner of this embodiment, before obtaining the moving direction and the moving distance of the first segment model of the three-dimensional object in the first frame, the method further includes:
dividing the object into a plurality of sections;
constructing a three-dimensional segmented model for each segment of the object;
connecting each segmented model according to the connection relation between each segment of the object;
and generating the three-dimensional object according to the connected segmented models.
When the object is divided into a plurality of sections, the object can be preferably divided into three sections, namely, the object is divided into three sections, namely, a head section, a middle section, a tail section and the like. Certainly, the object may also be divided into more segments, and this embodiment is not limited to a specific dividing manner and method, nor to the specific number of the segments after division, which is within the implementation range of this embodiment.
For the divided first segment, a corresponding segmentation model can be correspondingly constructed. For example, a head model, a middle model, a tail model, etc. may be constructed accordingly. Each segmented model is a three-dimensional model.
It is to be noted that, when the object is divided into several segments, the positional relationship between each segment may be recorded, for example, for dividing the object into a head, a middle, and a tail, the positional relationship between each segment, that is, the positional relationship between the head, the middle, and the tail. If the number of divided segments is large, the connection relationship between each segment needs to be preserved. It is to be understood that, here, the connection relationship between each segment is a positional relationship between any one of the divided segments and its adjacent segment, and this positional relationship includes a front-back positional relationship and also includes a spatial positional relationship.
In this embodiment, when each of the segment models is connected according to the connection relationship between each segment of the object, the position relationship between each of the segment models may be determined according to the position relationship between each segment of the object; each of the segment models may be connected according to a connection node relationship between each segment of the object and a positional relationship between each of the segment models.
Since each segment model has a corresponding relationship with a corresponding segment, the positional relationship between each segment model, that is, the positional relationship in front and back and space, can be determined according to the connection relationship between each segment of the object. For example, when the object is divided into three sections, i.e., a head section, a middle section, and a tail section, the positional relationship may be a front-back positional relationship in which the head section is connected to the middle section, and the middle section is connected to the tail section.
However, when each segment model is connected, the determination of the position relationship between each segment model cannot guarantee that the connection is correct. For example, after dividing the object into three segments, i.e., a head, a middle, and a tail, the middle may have one end larger and the other end smaller, and if the large end is connected to the head and the small end is connected to the tail, the large end may be connected to the tail and the small end may be connected to the head when connecting the first segment model. Therefore, the correctness of each segment model connection cannot be guaranteed only according to the position relation.
In this embodiment, each of the segment models may be connected according to a connection node relationship between each segment of the object and a position relationship between each of the segment models. The connection node relationship may be the number of connection nodes between two adjacent segments when the object is divided into a plurality of segments, and the difference in the number needs to ensure the connection correctness of each segment model. The connection node relationship may be a difference in the shape or other aspects of the connection node, or the like. When each segment model is connected, the position of each segment model may be determined according to the position relationship, and then, according to the connection node relationship between each segment, the specific connection manner between each segment model and the adjacent segment model may be determined. For example, as described above, the position between the cephalad, the medial and the caudal portions may be determined first, i.e., the medial portion is between the cephalad and the caudal portions. Then, based on the connection node relationship, it can be determined that the middle part is connected with the head part at the large end and the tail part at the small end, so as to correctly connect each segment model.
In an implementation manner of this embodiment, the acquiring a moving direction and a moving distance of the first segment model of the three-dimensional object in the first frame includes:
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segment model under the first frame;
and calculating the moving distance of the first segmentation model under the first frame according to the moving speed of the first segmentation model under the first frame.
When the three-dimensional object moves in a first frame, which may be any frame of the three-dimensional object as it moves, such as the first time frame when the movement begins, a first segmented model of the three-dimensional object may be first determined. The first segmented model is the segmented model in which the three-dimensional object moves first when the first frame moves. For example, for a greedy snake, the segmented model of the head is the first segmented model thereof.
As the three-dimensional object moves in the first frame, a direction of movement of the first segmented model in the first frame may be determined. The moving direction may be any direction in the three-dimensional game scene, and is not limited to different directions such as front, back, left, and right. The moving direction in the present embodiment is a moving direction of a three-dimensional object in a three-dimensional coordinate system, which can be represented by a three-dimensional vector.
In this embodiment, trigonometric functions such as sin and cos, or functions such as circumference, ellipse, hyperbola and parabola, or 3-degree function curves may be used to control the moving direction of the first section model in the first frame. Here, the moving direction of the first segment model may be regarded as the moving direction of the entire three-dimensional object.
The moving speed of the first segment model may be a moving speed set by the user for the character, or may be determined from the attribute data itself of the three-dimensional object, or the like. Generally, a second has 60 frames, and in the embodiment, the time represented by the first frame may be one sixteenth of a second. Therefore, based on the moving speed of the first segment model and the first frame representing the moving time, the moving distance of the first segment model at the first frame can be calculated. For example, the moving distance of the first segment model in the corresponding moving direction may be calculated by a trigonometric function.
In this embodiment, the moving direction of the first segment model may be taken as the moving direction of the three-dimensional object, and the position of the first segment model after moving the moving distance may be taken as the position of the three-dimensional object, so that when comparing two frames before and after, the position of the previous frame is converted to the position of the next frame, and the direction is correct. One frame of a general terminal is sixtieth second, and thus, the moving direction and the moving distance within one second can make the movement of the three-dimensional object the same as the movement of the real three-dimensional object. For example, when the three-dimensional object is a greedy snake, the moving track of the three-dimensional object in the three-dimensional game scene is completely similar to the moving track of the snake in reality.
In this embodiment, the moving direction and the moving distance of the first segment model may be stored, and then when the first segment model moves in the second frame, the segment models following the first segment model are sequentially moved in the second frame according to the moving direction and the moving distance. For example, after the object is divided into three segments, i.e., a head segment, a middle segment, and a tail segment, the head segment can be used as a first segment, and the moving direction and the moving distance of the first segment in the first frame can be obtained.
Fig. 2 is a block diagram of a system for moving a three-dimensional object according to an embodiment. As shown in fig. 2, the system includes:
an obtaining module 220, configured to obtain a moving direction and a moving distance of a first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model is a segmented model which moves firstly in the three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves;
a moving module 240, configured to, when the first segment model moves in a second frame, sequentially move segment models subsequent to the first segment model in the second frame according to the moving direction and the moving distance.
In the above embodiment of the present invention, the three-dimensional object is a three-dimensional segmented model, when the three-dimensional object moves, a moving direction and a moving distance of a first segmented model of the three-dimensional object in a first frame may be obtained first, where the first segmented model is a segmented model that moves first in the three-dimensional segmented model of the three-dimensional object when the three-dimensional object moves along the moving direction, and the first frame is any one frame when the three-dimensional object moves; thus, when the three-dimensional object moves, the moving distance in the moving direction of the first segmented model in which the three-dimensional object first moves can be obtained first; then, when the three-dimensional object moves under a second frame, wherein the second frame and the first frame are adjacent time frames, the segmented models behind the first segmented model can be sequentially moved under the second frame according to the acquired moving direction and moving distance, so that the movement of the three-dimensional object is realized according to the movement of each segmented model, and the moving direction and moving distance of each segmented model are the same, so that the moving track of the three-dimensional object is more vivid and natural.
Optionally, as an example, the system further includes:
the dividing module is used for dividing the object into a plurality of sections;
a construction module for constructing a three-dimensional segmented model for each segment of the object;
the connection module is used for connecting each segmented model according to the connection relation between each segment of the object;
and the generation module is used for generating the three-dimensional object according to the connected segmented models.
Optionally, as an example, the dividing module is configured to:
the object is divided into a head, a middle and a tail.
Optionally, as an example, the connection module is configured to:
determining the position relation between each segmented model according to the position relation between each segment of the object;
and connecting each segmented model according to the connection node relation between each segment of the object and the position relation between each segmented model.
Optionally, as an example, the obtaining module 220 is configured to:
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segment model under the first frame;
and calculating the moving distance of the first section model under the first frame according to the moving speed of the first section model under the first frame.
It is understood that the above system may implement the specific processes of the embodiment related to the method of fig. 1, and the embodiment is not described in detail herein.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. A method of moving a three-dimensional object, the method comprising:
acquiring the moving direction and the moving distance of a first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model is a segmented model which moves firstly in the three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves;
when the first segmented model moves under a second frame, sequentially moving segmented models behind the first segmented model under the second frame according to the moving direction and the moving distance, wherein the second frame and the first frame are adjacent time frames;
the obtaining of the first segmented model of the three-dimensional object precedes a moving direction and a moving distance of the first frame, the method further comprising:
dividing the object into a plurality of sections;
constructing a three-dimensional segmented model for each segment of the object;
connecting each segmented model according to the connection relation between each segment of the object;
generating the three-dimensional object according to the connected segmented models;
connecting each of the segmented models according to the connection relationship between each segment of the object, including:
determining the position relation between each segmented model according to the position relation between each segment of the object;
connecting each segmented model according to the connection node relation between each segment of the object and the position relation between each segmented model;
the obtaining of the moving direction and the moving distance of the first segmented model of the three-dimensional object in the first frame comprises:
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segment model under the first frame;
and calculating the moving distance of the first segmentation model under the first frame according to the moving speed of the first segmentation model under the first frame.
2. The method of claim 1, wherein the dividing the object into segments comprises:
the object is divided into a head, a middle and a tail.
3. A system for moving a three-dimensional object, the system comprising:
the acquisition module is used for acquiring the moving direction and the moving distance of the first segment model of the three-dimensional object in a first frame; when the three-dimensional object moves along the moving direction, the first segmented model moves first in three-dimensional segmented models in the three-dimensional object, and the first frame is any one frame when the three-dimensional object moves;
a moving module, configured to, when the first segment model moves in a second frame, sequentially move segment models subsequent to the first segment model in the second frame according to the moving direction and the moving distance, where the second frame and the first frame are adjacent time frames;
the system further comprises:
the dividing module is used for dividing the object into a plurality of sections;
a construction module for constructing a three-dimensional segmented model for each segment of the object;
the connection module is used for connecting each segmented model according to the connection relation between each segment of the object;
the generation module is used for generating the three-dimensional object according to the connected segmented models;
the connection module is used for:
determining the position relation between each segmented model according to the position relation between each segment of the object;
connecting each segmented model according to the connection node relation between each segment of the object and the position relation between each segmented model;
determining a first segmented model of the three-dimensional object as the three-dimensional object moves in a first frame;
determining a moving direction of the first segment model under the first frame;
and calculating the moving distance of the first section model under the first frame according to the moving speed of the first section model under the first frame.
4. The system of claim 3, wherein the partitioning module is configured to:
the object is divided into a head, a middle and a tail.
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