CN109947890A - The drafting cartoon implementing method and device of map real-time track - Google Patents
The drafting cartoon implementing method and device of map real-time track Download PDFInfo
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Abstract
The invention discloses a kind of drafting cartoon implementing method of map real-time track and devices, the described method includes: obtaining this data packet, this time, the data packet of last time track drafting point and time last time that need track drafting point, wherein, it includes this latitude and longitude coordinates that described this, which needs the data packet of track drafting point, and the data packet of the last time track drafting point includes the latitude and longitude coordinates of last time；Time interval is obtained according to this time and time last time；Judge whether the time interval is greater than or equal to the default value of preset track drafting duration；It is delayed by execution if more than last track drafting animation is then considered as, selects the preset smaller value less than default value；The duration of this track drafting is equal to the default value of the preset track drafting duration if being less than or equal to；According to the duration of this track drafting, this latitude and longitude coordinates, the latitude and longitude coordinates track drafting animation of last time；After this is completed, the value of this track drafting is saved.
Description
Technical field
The present invention relates to a kind of drafting cartoon implementing method of map real-time track and devices.
Background technique
In present map software, real-time rendering path is mostly static drafting, and people lead by map software
Endurance, the Dynamic Display of map track often generate " pause and transition in rhythm or melody " sense.Such as when people's self-driving is navigated, vehicle in map software
Position where previous moment may A coordinate position also in map software interface, but subsequent time may just beat
To from the farther away B coordinate position of A coordinate position, the track drafting animation of this beat type is not smooth enough, brings very
Bad visual experience reduces the use feeling and Experience Degree of people.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problems to be solved by the present invention are: providing a kind of in track drafting
When reduce " pause and transition in rhythm or melody " sense map real-time track drafting cartoon implementing method and device.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of map real-time track is provided
Draw cartoon implementing method, comprising the following steps:
Obtain the data packet that this needs track drafting point, this time RTC, last time track drafting point data packet and
Time last time RTL, wherein it includes this latitude and longitude coordinates GPSC (x, y) that described this, which needs the data packet of track drafting point,
The data packet of the last time track drafting point includes the latitude and longitude coordinates GPSL (x, y) of last time；
Time interval n is obtained according to this time RTC and time last time RTL；
Judge whether the time interval n is greater than or equal to the implied value T R of preset track drafting duration；
If the time interval n is greater than the implied value T R of preset track drafting duration, it is considered as last track drafting
Animation is delayed by execution, selects the preset smaller value minT less than the implied value T R so that this track drafting when
Long TR is equal to the preset smaller value minT；
If the time interval n is less than or equal to the implied value T R of preset track drafting duration, described this is drawn
The duration TR of track processed is equal to the implied value T R of the preset track drafting duration；
It is sat according to the duration TR of this track drafting, this latitude and longitude coordinates GPSC (x, y), the longitude and latitude of last time
Mark GPSL (x, y) track drafting animation；
After this is completed, the value of this track drafting is saved.
Further, according to the duration TR of this track drafting, this latitude and longitude coordinates GPSC (x, y), on
During secondary latitude and longitude coordinates GPSL (x, y) track drafting animation, especially by following manner track drafting animation:
M interpolation is preset between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
Point, the M interpolation point is by this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time etc.
It is divided into M+1 section；
Obtain the azimuth angle theta of this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time；
It is obtained according to the latitude and longitude coordinates GPSL (x, y) of azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and last time
The distance between two latitude and longitude coordinates point D；
It is respectively obtained and is defaulted according to the latitude and longitude coordinates GPSL (x, y) of the azimuth angle theta, the distance D and last time
The longitude and latitude of M interpolation point between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time is sat
Mark GPS (x0, y0), GPS (x1, y1) ..., GPS (xM, yM)；
According to the latitude and longitude coordinates GPSL (x, y), M interpolation point and the latitude and longitude coordinates of this last time of the last time
GPSC (x, y) (x, y) obtains when a length of TR '=TR/ (M+1) of the track drafting of each adjacent two interpolation point；
According to the duration TR ' of the track drafting of each adjacent two point, the latitude and longitude coordinates GPSL of last time is successively drawn
(x, y) to the track of interpolation point GPS (x0, y0), interpolation point GPS (x0, y0) to interpolation point GPS (x1, y1) track ...,
Interpolation point GPS (xM, yM) arrives the track of this latitude and longitude coordinates GPSC (x, y).
Further, it is described this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time side
Parallactic angle θ is obtained by following formula:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) ×
Cos (GPSCj-GPSLj)) (one)
In formula (one), GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate the latitude and longitude coordinates of last time
Latitude, GPSCj indicate that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
Further, it is obtained according to this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
In the step of to the distance between two latitude and longitude coordinates point D, the distance D is obtained especially by following formula:
L=R* (θ ÷ 180* π) (two)
In formula (two), R is the radius of the earth, and π is pi.
Further, according to the latitude and longitude coordinates GPSL (x, y) of the azimuth angle theta, the distance D and last time difference
Obtain defaulting in the M between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
The latitude and longitude coordinates GPS (x0, y0) of a interpolation point, GPS (x1, y1) ..., GPS (xM, yM) the step of in, especially by with
Lower formula obtains the latitude and longitude coordinates of each interpolation point:
θN=θ ÷ (M+1) (three)
In formula (three), θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time, wherein N is small
In equal to M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)) (four)
In formula (four), a is the latitude variate-value of n-th interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)) (five)
In formula (five), C is the longitude variate-value of n-th interpolation point, the longitude of the latitude and longitude coordinates relative to last time
GPSLj。
XNj=GPSLj+C (six)
In formula (six), the XNj is the longitude of n-th interpolation point；
XNw=90-a (seven)
In formula (seven), the XNw is the latitude of N number of interpolation point.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of map real-time track is provided
Draw animation realization device, comprising:
First obtains module, needs the data packet of track drafting point and the data of last time track drafting point for this
Packet, wherein it is described this need the data packet of track drafting point include this latitude and longitude coordinates GPSC (x, y) and this when
Between RTC, the data packet of the last time track drafting point includes latitude and longitude coordinates GPSL (x, y) and time last time of last time
RTL；；
Time interval computing module, for obtaining time interval n according to this time RTC and time last time RTL；
Judgment module, for judging whether the time interval n is greater than or equal to the default of preset track drafting duration
Value TR；
Track drafting duration determining module, for judging to obtain the time interval n greater than default when the judgment module
Track drafting duration implied value T R, then be considered as last animation of drawing and be delayed by execution, select preset smaller value minT,
So that the duration TR of this track drafting is equal to the preset smaller value minT；It is also used to judge when the judgment module
It is less than or equal to the implied value T R of preset track drafting duration to the time interval n, then this track drafting
Duration TR is equal to the implied value T R of the preset track drafting duration；
Track animation drafting module, duration TR, this latitude and longitude coordinates for this track drafting according to
GPSC (x, y), the latitude and longitude coordinates of last time GPSL (x, y) track drafting animation；
Preserving module, for after this is completed, saving the value of this request, so that GPSL (x, y)=GPSC
(x, y), PL=PC, RTL=RTC.
Further, the track animation drafting module includes:
Interpolation point presetting module, in this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL of last time
Preset M interpolation point between (x, y), the M interpolation point is by this latitude and longitude coordinates GPSC (x, y) and the warp of last time
Latitude coordinate GPSL (x, y) is divided into M+1 section；
Second obtains module, for obtaining this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL of last time
The azimuth angle theta of (x, y)；
Third obtains module, for according to azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and the longitude and latitude of last time
Coordinate GPSL (x, y) obtains the distance between two latitude and longitude coordinates point D；
Interpolation point latitude coordinates obtain module, for according to the azimuth angle theta, the distance D and the longitude and latitude of last time
Coordinate GPSL (x, y) respectively obtain the latitude and longitude coordinates GPSC (x, y) and last time that default in this latitude and longitude coordinates GPSL (x,
Y) the latitude and longitude coordinates GPS (x0, y0) of M interpolation point between, GPS (x1, y1) ..., GPS (xM, yM)；
The duration of adjacent two interpolation points track drafting obtains module, for the latitude and longitude coordinates GPSL according to the last time
The latitude and longitude coordinates GPSC (x, y) (x, y) of (x, y), M interpolation point and this last time obtain each adjacent two interpolation point
When a length of TR '=TR/ (M+1) of track drafting；
Track animation rendering submodule is successively drawn for the duration TR ' according to the track drafting of each adjacent two point
The track of the latitude and longitude coordinates GPSL (x, y) Dao interpolation point GPS (x0, y0) of last time processed, interpolation point GPS (x0, y0) arrive interpolation point
The track of GPS (x1, y1) ..., interpolation point GPS (xM, yM) to this latitude and longitude coordinates GPSC (x, y) track.
Further, the interpolation point latitude coordinates obtain module and are also used to be obtained by the following formula the azimuth angle theta:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) ×
Cos (GPSCj-GPSLj)), wherein GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate the longitude and latitude of last time
The latitude of coordinate, GPSCj indicate that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
Further, the second acquisition module is also used to obtain the distance D by following formula:
L=R* (θ ÷ 180* π), wherein R is the radius of the earth, and π is pi.
10, the drafting animation realization device of map real-time track as claimed in claim 6, which is characterized in that described to insert
Value point latitude coordinates obtain module and are also used to obtain the latitude and longitude coordinates of each interpolation point by following formula:
θN=θ ÷ (M+1), wherein θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time,
Wherein, N is less than or equal to M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)), wherein
A is the latitude variate-value of n-th interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)), wherein C is the longitude variate-value of n-th interpolation point, phase
For the longitude GPSLj of the latitude and longitude coordinates of last time.
XNj=GPSLj+C, wherein the XNj is the longitude of n-th interpolation point；
XNw=90-a, wherein the XNw is the latitude of N number of interpolation point.
The drafting cartoon implementing method and device of map real-time track of the invention, on the one hand, unlike present technology that
The default value using track drafting duration of sample simply, but dexterously pass through time interval before drawing each time and draw
The default value of track duration processed is judged that the interval reported is drawn in the animation delay and real data that track is drawn to be entangled
Just, " Caton " phenomenon of track animated show in existing software is greatly reduced.On the other hand, at mapping track,
In the way of interpolation subdividing, interpolated coordinates point is calculated, is changed with subtle animation and reaches integral rails mark animation drafting effect, according to
Interpolation number is defined, the GPS interpolation point of distance relatively is calculated and is drawn using the movement of few distance to reach overall track
The animation of system is realized.By the way that the gradually dynamic effect of track drafting may be implemented in terms of two above, the use feeling and body of people are improved
Sense is tested, the satisfaction of people is improved.
Detailed description of the invention
Fig. 1 is the flow chart of drafting one embodiment of cartoon implementing method of map real-time track of the present invention.
Fig. 2 is rendering algorithm analysis diagram in the drafting cartoon implementing method of map real-time track of the present invention.
Fig. 3 is the block diagram of drafting one embodiment of animation realization device of map real-time track of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figure 1 and Fig. 2, map real-time track of the present invention drafting cartoon implementing method the following steps are included:
S101, the data packet for obtaining data packet and last time track drafting point that this needs track drafting point, wherein institute
Stating this to need the data packet of track drafting point includes this latitude and longitude coordinates GPSC (x, y) and this time RTC, described
The data packet of last time track drafting point includes the latitude and longitude coordinates GPSL (x, y) and time last time RTL of last time；
In this step, it is the value saved after the completion of last track drafting that the last time, which needs the data of track drafting point,
In acquire.Described this needs the data packet of track drafting point to obtain by following sub-step:
S1011, start from network request packet；This step can be any electronic equipment with map software and pass through
WIFI, 2G, 3G, 4G, 5G etc. wireless network need to draw asking for this tracing point data demand packet to GPS positioning system request
Seek data.
S1022, record current request time RTC (this i.e. described time RTC)；
S1033, network request return to this tracing point data packet for needing to draw, the latitude and longitude coordinates including this
GPSC(x,y)。
S102, time interval n is obtained according to this time RTC and time last time RTL；
S103, judge whether the time interval n is greater than or equal to the implied value T R of preset track drafting duration；
If S104, the time interval n are greater than the implied value T R of preset track drafting duration, it is considered as last drafting
Track animation is delayed by execution, the preset smaller value minT less than the implied value T R is selected, so that this track drafting
Duration TR be equal to the preset smaller value minT；
If S105, the time interval n are less than or equal to the implied value T R of preset track drafting duration, it is described this
Track drafting duration TR be equal to the preset track drafting duration implied value T R；
S106, the duration TR of this track drafting, this latitude and longitude coordinates GPSC (x, y), the warp of last time according to
Latitude coordinate GPSL (x, y) track drafting animation；
As preferred or optional, this step includes following sub-step:
S1061, M is preset between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
A interpolation point, the M interpolation point is by this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL of last time
(x, y) is divided into M+1 section；
The orientation of the latitude and longitude coordinates GPSL (x, y) of S1062, the latitude and longitude coordinates GPSC (x, y) for obtaining this and last time
Angle θ；As preferred or optional, the azimuth angle theta passes through following formula and obtains:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) ×
Cos (GPSCj-GPSLj)) (one)
In formula (one), GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate the latitude and longitude coordinates of last time
Latitude, GPSCj indicate that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
S1063, according to the latitude and longitude coordinates GPSL of azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and last time (x,
Y) the distance between two latitude and longitude coordinates point D is obtained；As preferred or optional, the distance is obtained by following formula
D:
L=R* (θ ÷ 180* π) (two)
In formula (two), R is the radius of the earth, and π is pi.
S1064, it is respectively obtained according to the latitude and longitude coordinates GPSL (x, y) of the azimuth angle theta, the distance D and last time
Default in the warp of M interpolation point between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
Latitude coordinate GPS (x0, y0), GPS (x1, y1) ..., GPS (xM, yM)；As preferred or optional, pass through following formula
Obtain the latitude and longitude coordinates of each interpolation point:
θN=θ ÷ (M+1) (three)
In formula (three), θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time, wherein N is small
In equal to M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)) (four)
In formula (four), a is the latitude variate-value of n-th interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)) (five)
In formula (five), C is the longitude variate-value of n-th interpolation point, the longitude of the latitude and longitude coordinates relative to last time
GPSLj。
XNj=GPSLj+C (six)
In formula (six), the XNj is the longitude of n-th interpolation point；
XNw=90-a (seven)
In formula (seven), the XNw is the latitude of N number of interpolation point.
S1065, latitude and longitude coordinates GPSL (x, y), M interpolation point and the longitude and latitude of this last time according to the last time
Degree coordinate GPSC (x, y) (x, y) obtains when a length of TR '=TR/ (M+1) of the track drafting of each adjacent two interpolation point；
S1066, the duration TR ' according to the track drafting of each adjacent two point, the longitude and latitude for successively drawing last time are sat
Mark the track of GPSL (x, y) to interpolation point GPS (x0, y0), the rail of interpolation point GPS (x0, y0) to interpolation point GPS (x1, y1)
Mark ..., interpolation point GPS (xM, yM) to this latitude and longitude coordinates GPSC (x, y) track.
S107, after this is completed, save the value of this track drafting so that GPSL (x, y)=GPSC (x,
Y), RTL=RTC.
In the present solution, every between predetermined to network request packet.That is, this programme further include:
S108, after waiting predetermined time TR, S101 step is executed again, until the track of this navigation is completed.
Embodiment of the present invention records this request time in request, this was by the last time of request time and storage
Request time acquires the time difference, is compared according to the time difference with default value to judge that last time track drafting animation is delayed by and hold
Row, to reduce and the latency issue of the equipment of various configurations to adjust drafting duration, significantly reduce rail in map software
Mark animation " Caton " phenomenon.Further, by above method track drafting animation, it is inserted into several in each track and inserts
It is worth point, each track is subdivided into several sections and is drawn, is showed in face of user, mentions so that track animation is more smooth
Experience sense, the satisfaction of high user.
Fig. 3 is referred to, Fig. 3 is the block diagram of drafting one embodiment of animation realization device of map real-time track of the present invention.
The drafting animation realization device of the map real-time track of the present embodiment includes:
First obtains module 101, needs the data packet of track drafting point and the number of last time track drafting point for this
According to packet, wherein it is described this need the data packet of track drafting point include this latitude and longitude coordinates GPSC (x, y) and this
The data packet of time RTC, the last time track drafting point include latitude and longitude coordinates GPSL (x, y) and time last time of last time
RTL。
Time interval computing module 102, for obtaining time interval n according to this time RTC and time last time RTL.
Judgment module 103, for judging whether the time interval n is greater than or equal to the silent of preset track drafting duration
Recognize value TR.
Track drafting duration determining module 104, for obtain the time interval n big when the judgment module 103 judgement
In the implied value T R of preset track drafting duration, then it is considered as last animation of drawing and is delayed by execution, select preset smaller
Value minT, so that the duration TR of this track drafting is equal to the preset smaller value minT；It is also used to when the judgement mould
Block 103 judges to obtain the implied value T R that the time interval n is less than or equal to preset track drafting duration, then it is described this
The duration TR of track drafting is equal to the implied value T R of the preset track drafting duration.
Track animation drafting module 105, duration TR, this latitude and longitude coordinates for this track drafting according to
GPSC (x, y), the latitude and longitude coordinates of last time GPSL (x, y) track drafting animation.
Wherein, the track animation drafting module 105 include interpolation point presetting module 1051, second obtain module 1052,
Third obtains module 1053, interpolation point latitude coordinates obtain module 1054, the duration of adjacent two interpolation points track drafting obtains mould
Block 1055 and track animation rendering submodule 1056.
The interpolation point presetting module 1051 is used to sit in this latitude and longitude coordinates GPSC (x, y) and the longitude and latitude of last time
It marks and presets M interpolation point between GPSL (x, y), the M interpolation point is by this latitude and longitude coordinates GPSC (x, y) and upper
Secondary latitude and longitude coordinates GPSL (x, y) is divided into M+1 section；
Described second obtains module 1052, for obtaining this latitude and longitude coordinates GPSC (x, y) and the longitude and latitude of last time
The azimuth angle theta of coordinate GPSL (x, y)；Wherein, the second acquisition module 1052 is also used to be obtained by the following formula the side
Parallactic angle θ:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) ×
Cos (GPSCj-GPSLj)), wherein GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate the longitude and latitude of last time
The latitude of coordinate, GPSCj indicate that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
Third obtains module 1053, for according to azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and the warp of last time
Latitude coordinate GPSL (x, y) obtains the distance between two latitude and longitude coordinates point D；The third obtains module 1053 and is also used to lead to
It crosses following formula and obtains the distance D:
L=R* (θ ÷ 180* π), wherein R is the radius of the earth, and π is pi.
The interpolation point latitude coordinates obtain module 1054, for according to the azimuth angle theta, the distance D and last time
Latitude and longitude coordinates GPSL (x, y) respectively obtain the latitude and longitude coordinates GPSC (x, y) for defaulting in this and the longitude and latitude of last time and sit
Mark the latitude and longitude coordinates GPS (x0, y0) of M interpolation point between GPSL (x, y), GPS (x1, y1) ..., GPS (xM, yM).
The interpolation point latitude coordinates obtain module 1054 and are also used to obtain the warp of each interpolation point by following formula
Latitude coordinate:
θN=θ ÷ (M+1), wherein θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time,
Wherein, N is less than or equal to M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)), wherein
A is the latitude variate-value of n-th interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)), wherein C is the longitude variate-value of n-th interpolation point, phase
For the longitude GPSLj of the latitude and longitude coordinates of last time.
XNj=GPSLj+C, wherein the XNj is the longitude of n-th interpolation point；
XNw=90-a, wherein the XNw is the latitude of N number of interpolation point.
The duration of the adjacent two interpolation points track drafting obtains module 1055 and is used to be sat according to the longitude and latitude of the last time
Mark GPSL (x, y), M interpolation point and the latitude and longitude coordinates GPSC (x, y) (x, y) of this last time obtain each adjacent two and insert
It is worth when a length of TR '=TR/ (M+1) of the track drafting of point；
The track animation rendering submodule 1056 is used for the duration of the track drafting according to each adjacent two point
TR ', successively draw the track of latitude and longitude coordinates GPSL (x, y) Dao interpolation point GPS (x0, y0) of last time, interpolation point GPS (x0,
Y0) to interpolation point GPS (x1, y1) track ..., interpolation point GPS (xM, yM) arrive this latitude and longitude coordinates GPSC (x, y)
Track.
And preserving module 106, for after this is completed, saving the value of this request, so that GPSL (x, y)
=GPSC (x, y), PL=PC, RTL=RTC.
The above is only embodiments of the present invention, are not intended to limit the scope of the invention, all to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (10)
1. a kind of drafting cartoon implementing method of map real-time track, comprising the following steps:
Obtain this data packet, this time RTC, the data packet of last time track drafting point and last time for needing track drafting point
Time RTL, wherein it includes this latitude and longitude coordinates GPSC (x, y) that described this, which needs the data packet of track drafting point, described
The data packet of last time track drafting point includes the latitude and longitude coordinates GPSL (x, y) of last time；
Time interval n is obtained according to this time RTC and time last time RTL；
Judge whether the time interval n is greater than or equal to the implied value T R of preset track drafting duration；
If the time interval n is greater than the implied value T R of preset track drafting duration, it is considered as last track drafting animation
It is delayed by execution, the preset smaller value minT less than the implied value T R is selected, so that the duration TR of this track drafting
Equal to the preset smaller value minT；
If the time interval n is less than or equal to the implied value T R of preset track drafting duration, this drafting rail
The duration TR of mark is equal to the implied value T R of the preset track drafting duration；
According to the duration TR of this track drafting, this latitude and longitude coordinates GPSC (x, y), the latitude and longitude coordinates of last time
GPSL (x, y) track drafting animation；
After this is completed, the value of this track drafting is saved.
2. the drafting cartoon implementing method of map real-time track as described in claim 1, which is characterized in that according to described
The duration TR of secondary track drafting, this latitude and longitude coordinates GPSC (x, y), the latitude and longitude coordinates GPSL (x, y) of last time draw rail
During mark animation, especially by following manner track drafting animation:
M interpolation point is preset between this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time,
This latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time is divided by the M interpolation point
M+1 section；
Obtain the azimuth angle theta of this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time；
According to the latitude and longitude coordinates GPSL (x, y) of azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and last time obtain this two
The distance between latitude and longitude coordinates point D；
It is respectively obtained according to the latitude and longitude coordinates GPSL (x, y) of the azimuth angle theta, the distance D and last time and defaults in this
Latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time between M interpolation point latitude and longitude coordinates
GPS(x0,y0),GPS(x1,y1),……,GPS(xM,yM)；
According to the latitude and longitude coordinates GPSL (x, y) of the last time, M interpolation point and the latitude and longitude coordinates GPSC of this last time
(x, y) (x, y) obtains when a length of TR '=TR/ (M+1) of the track drafting of each adjacent two interpolation point；
According to the duration TR ' of the track drafting of each adjacent two point, the latitude and longitude coordinates GPSL (x, y) of last time is successively drawn
To the track of interpolation point GPS (x0, y0), interpolation point GPS (x0, y0) to interpolation point GPS (x1, y1) track ..., interpolation point
GPS (xM, yM) arrives the track of this latitude and longitude coordinates GPSC (x, y).
3. the drafting cartoon implementing method of map real-time track as claimed in claim 2, which is characterized in that this warp
The azimuth angle theta of latitude coordinate GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time are obtained by following formula:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) × cos
(GPSCj-GPSLj)) (one)
In formula (one), GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate the latitude of the latitude and longitude coordinates of last time,
GPSCj indicates that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
4. the drafting cartoon implementing method of map real-time track as claimed in claim 2, which is characterized in that according to this
Latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time obtains the distance between two latitude and longitude coordinates point D
The step of in, obtain the distance D especially by following formula:
L=R* (θ ÷ 180* π) (two)
In formula (two), R is the radius of the earth, and π is pi.
5. the drafting cartoon implementing method of map real-time track as claimed in claim 2, which is characterized in that according to the side
The latitude and longitude coordinates GPSL (x, y) of parallactic angle θ, the distance D and last time respectively obtain the latitude and longitude coordinates for defaulting in this
Latitude and longitude coordinates GPS (x0, y0), the GPS of M interpolation point between GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
(x1, y1) ..., GPS (xM, yM) the step of in, obtain the latitude and longitude coordinates of each interpolation point especially by following formula:
θN=θ ÷ (M+1) (three)
In formula (three), θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time, wherein N is less than or equal to
M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)) (four)
In formula (four), a is the latitude variate-value of n-th interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)) (five)
In formula (five), C is the longitude variate-value of n-th interpolation point, the longitude GPSLj of the latitude and longitude coordinates relative to last time.
XNj=GPSLj+C (six)
In formula (six), the XNj is the longitude of n-th interpolation point；
XNw=90-a (seven)
In formula (seven), the XNw is the latitude of N number of interpolation point.
6. a kind of drafting animation realization device of map real-time track, comprising:
First obtains module, needs the data packet of track drafting point and the data packet of last time track drafting point for this,
In, it includes this latitude and longitude coordinates GPSC (x, y) and this time that described this, which needs the data packet of track drafting point,
The data packet of RTC, the last time track drafting point include the latitude and longitude coordinates GPSL (x, y) and time last time RTL of last time；；
Time interval computing module, for obtaining time interval n according to this time RTC and time last time RTL；
Judgment module, for judging whether the time interval n is greater than or equal to the implied value T R of preset track drafting duration；
Track drafting duration determining module, for being greater than preset draw when the judgment module judges to obtain the time interval n
The implied value T R of track duration processed is then considered as last animation of drawing and is delayed by execution, selects preset smaller value minT, so that
The duration TR for obtaining this track drafting is equal to the preset smaller value minT；It is also used to judge to obtain institute when the judgment module
State the implied value T R that time interval n is less than or equal to preset track drafting duration, then it is described this track drafting duration
TR is equal to the implied value T R of the preset track drafting duration；
Track animation drafting module, for according to the duration TR of this track drafting, this latitude and longitude coordinates GPSC (x,
Y), latitude and longitude coordinates GPSL (x, y) track drafting animation of last time；
Preserving module, for after this is completed, saving the value of this request, so that GPSL (x, y)=GPSC (x,
Y), PL=PC, RTL=RTC.
7. the drafting animation realization device of map real-time track as claimed in claim 6, which is characterized in that the track animation
Drafting module includes:
Interpolation point presetting module, in this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
Between preset M interpolation point, the M interpolation point is by this latitude and longitude coordinates GPSC (x, y) and the longitude and latitude of last time
Coordinate GPSL (x, y) is divided into M+1 section；
Second obtains module, for obtaining this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates GPSL (x, y) of last time
Azimuth angle theta；
Third obtains module, for according to azimuth angle theta, this latitude and longitude coordinates GPSC (x, y) and the latitude and longitude coordinates of last time
GPSL (x, y) obtains the distance between two latitude and longitude coordinates point D；
Interpolation point latitude coordinates obtain module, for according to the azimuth angle theta, the distance D and the latitude and longitude coordinates of last time
GPSL (x, y) respectively obtain the latitude and longitude coordinates GPSC (x, y) and last time that default in this latitude and longitude coordinates GPSL (x, y) it
Between the latitude and longitude coordinates GPS (x0, y0) of M interpolation point, GPS (x1, y1) ..., GPS (xM, yM)；
The duration of adjacent two interpolation points track drafting obtains module, for according to the latitude and longitude coordinates GPSL (x, y) of the last time,
M interpolation point and the latitude and longitude coordinates GPSC (x, y) (x, y) of this last time obtain the drafting rail of each adjacent two interpolation point
When a length of TR '=TR/ (M+1) of mark；
Track animation rendering submodule is successively drawn for the duration TR ' according to the track drafting of each adjacent two point
The track of secondary latitude and longitude coordinates GPSL (x, y) Dao interpolation point GPS (x0, y0), interpolation point GPS (x0, y0) arrive interpolation point GPS
The track of (x1, y1) ..., interpolation point GPS (xM, yM) to this latitude and longitude coordinates GPSC (x, y) track.
8. the drafting animation realization device of map real-time track as claimed in claim 6, which is characterized in that the interpolation point warp
Latitude coordinate obtaining module is also used to be obtained by the following formula the azimuth angle theta:
θ=arccos (cos (90-GPSCw) × cos (90-GPSLw)+sin (90-GPSCw) × sin (90-GPSLw) × cos
(G PSCj-GPSLj)), wherein GPSCw indicates that the latitude of this latitude and longitude coordinates, GPSLw indicate that the longitude and latitude of last time is sat
Target latitude, GPSCj indicate that the longitude of this latitude and longitude coordinates, GPSLj indicate the longitude of the latitude and longitude coordinates of last time.
9. the drafting animation realization device of map real-time track as claimed in claim 6, which is characterized in that described second obtains
Module is also used to obtain the distance D by following formula:
L=R* (θ ÷ 180* π), wherein R is the radius of the earth, and π is pi.
10. the drafting animation realization device of map real-time track as claimed in claim 6, which is characterized in that the interpolation point
Latitude coordinates obtain module and are also used to obtain the latitude and longitude coordinates of each interpolation point by following formula:
θN=θ ÷ (M+1), wherein θNFor the azimuth of n-th interpolation point and the latitude and longitude coordinates GPSL (x, y) of last time, wherein
N is less than or equal to M；
A=arccos (cos (90-GPSLw) × cos (θ)+sin (90-GPSLw) × sin (θ) × cos (θN)), wherein a
The latitude variate-value of N number of interpolation point, relative to 90 degree；
C=arcsin (sin (θ) × sin (θN) ÷ sin (a)), wherein C is the longitude variate-value of n-th interpolation point, relative to
The longitude GPSLj of the latitude and longitude coordinates of last time.
XNj=GPSLj+C, wherein the XNj is the longitude of n-th interpolation point；
XNw=90-a, wherein the XNw is the latitude of N number of interpolation point.
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Application publication date: 20190628 |