CN107025680A - A kind of map rendering intent and device - Google Patents
A kind of map rendering intent and device Download PDFInfo
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- CN107025680A CN107025680A CN201610065512.5A CN201610065512A CN107025680A CN 107025680 A CN107025680 A CN 107025680A CN 201610065512 A CN201610065512 A CN 201610065512A CN 107025680 A CN107025680 A CN 107025680A
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- map
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
Abstract
The application provides a kind of map rendering intent and device, by obtaining map render mode and map rendering parameter；Obtain the current location of terminal device；And the current location of rendering parameter and terminal device according to the map, obtain map datum corresponding with map render mode；And then by the map datum got in the way of map render mode is rendered, the map render mode that ensure map rendering result needs according to user is rendered, to reduce map rendering result to the gap between the substitution sense of user and the experience of actually driving of user.
Description
Technical field
The present invention relates to technical field of geographic information, more specifically to a kind of map rendering intent and
Device.
Background technology
With the popularization of intelligent terminal, map products play more and more important effect in the life of people.
In order to bring user more life-like direct map rendering effect, increasing map products start to use
Three-dimensional map Rendering.
Existing three-dimensional map Rendering, which can be rendered, gets a bird's eye view pattern three-dimensional map, and Fig. 1, which is shown, to be got a bird's eye view
The map rendering effect figure of pattern three-dimensional map.Wherein, the indicating intelligent terminal of arrow 11 in Fig. 1 is current
Position.From Fig. 1 rendering effects, get a bird's eye view pattern three-dimensional map and there is substitution sense of the rendering result to user
The problem of there is certain gap between the experience of actually driving of user.
Therefore it provides a kind of map rendering intent and device, to reduce generation of the map rendering result to user
Enter the gap between sense and the experience of actually driving of user, be urgent problem to be solved.
The content of the invention
In view of this, the present invention provides a kind of map rendering intent and device, to reduce map rendering result
Substitution sense to user and the gap between the experience of actually driving of user.
To achieve these goals, technical scheme provided in an embodiment of the present invention is as follows：
A kind of map rendering intent, including：
Obtain map render mode and map rendering parameter；
Obtain the current location of terminal device；
According to the current location of the map rendering parameter and the terminal device, obtain and the map wash with watercolours
The corresponding map datum of dye pattern；
The map datum got is rendered according to the map render mode.
It is preferred that, the acquisition map render mode is specifically included：
Receive and map render mode is carried in map render request, the map render request；
Or,
Read the map render mode pre-set.
It is preferred that, the map rendering parameter at least includes map scale, the resolution of terminal device screen
Rate and picture element density, the current location according to the map rendering parameter and the terminal device is obtained
Map datum corresponding with the map render mode is taken to specifically include：
According to the map scale, the resolution ratio of the terminal device screen and picture element density, institute is obtained
State the geographic factor of the map of terminal device screen display；
According to the current location of the geographic factor of the map and the terminal device, obtain and the map
The corresponding map datum of render mode.
It is preferred that, the resolution ratio and pixel according to the map scale, the terminal device screen
Density, the geographic factor for obtaining the map of the terminal device screen display is specifically included：
Using the map scale and the picture element density of the terminal device screen, scaling factor is obtained；
According to the resolution ratio and the scaling factor of the terminal device screen, the terminal device is obtained
The geographic factor of the map of screen display.
It is preferred that, the map render mode is the three-dimensional map render mode of first person, described
According to the resolution ratio and the scaling factor of the terminal device screen, the terminal device screen is obtained
The geographic factor of the map of display is specifically included：
Horizontal pixel value and the scaling factor in the resolution ratio of the terminal device screen, are obtained
To the geographical length of level of the map of the terminal device screen display；
Obtain the vertical geographical length of the map of the terminal device screen display pre-set, the water
Manage the geographical ginseng of length and the vertical geographical length for the map of the terminal device screen display in level land
Number.
It is preferred that, the current location of the terminal device includes longitude coordinate and latitude coordinate, the basis
The current location of the geographic factor of the map and the terminal device, is obtained and the map render mode
Corresponding map datum is specifically included：
The level geography of longitude coordinate and the map in the current location of the terminal device is long
Degree, obtains the minimum longitude coordinate and maximum longitude seat of map that the terminal device show in the horizontal direction
Mark；
Latitude coordinate in the current location of the terminal device is defined as the ground that the terminal device is shown
Minimum latitude coordinate of the figure in vertical direction；
The minimum latitude coordinate is translated into the vertical geographical length, obtains what the terminal device was shown
Maximum latitude coordinate of the map in vertical direction；
Geographical coordinate position is obtained to fall into by the maximum longitude coordinate, maximum latitude coordinate, minimum longitude
The map datum in geographic range that coordinate and minimum latitude coordinate are constituted.
It is preferred that, it is described to be rendered the map datum got according to the map render mode
Specifically include：
According to scaling factor and the corresponding visual angle of the map render mode, the map anglec of rotation, by institute
State the map for the inertial coodinate system that map datum is transformed to from latitude and longitude coordinates system under the map render mode
Data, the origin of coordinates of the inertial coodinate system is the current location of the terminal device；
Using any one coordinate of camera space coordinate system as the new origin of coordinates of the inertial coodinate system,
Map datum under the inertial coodinate system is moved into camera space coordinate system, camera space coordinate is obtained
Map datum under system；
Map datum under the camera space coordinate system is projected into the camera space coordinate system and represents phase
The coordinate surface of machine screen, obtains the map datum under two-dimensional screen coordinates system；
The map datum under the two-dimensional screen coordinates system is rendered by rasterization process.
It is preferred that, it is described to be revolved according to scaling factor and the corresponding visual angle of the map render mode, map
Gyration, the map datum is transformed to from latitude and longitude coordinates system the inertia under the map render mode
The map datum of coordinate system is specifically included：
Utilize transformation matrix of coordinates M set in advance1The map datum is transformed to from latitude and longitude coordinates system
The map datum of inertial coodinate system under the map render mode；
Wherein, the M1=Mt*S1*R1；
Wherein, the 3*3 in upper left corner matrix is unit matrix in the matrix；
(-x0,-y0,-z0) it is translational coordination, indicate the current location of the terminal device, x0Represent level
The translational component in direction, y0Represent the translational component of vertical direction, z0Represent the translational component of vertical direction；
Wherein, the 3*3 matrixes in the upper left corner are scaled matrix in the matrix, represent three
The amplification coefficient of each axle, S in dimension spacex1For the scaling factor of the map scale in the horizontal direction；
Sy1For the map scale vertical direction scaling factor；Sz1It is the map scale vertical
The scaling factor in direction；
Wherein, in the matrix upper left corner 3*3 matrix representative spin matrixs,
(rxx1,rxy1,rxz1) represent the visual angle, (ryx1,ryy1,ryz1) represent the map anglec of rotation, (rzx1,rzy1,rzz1)
Represent ground gyration.
It is preferred that, described any one coordinate using camera space coordinate system is new as the inertial coodinate system
The origin of coordinates, the map datum under the inertial coodinate system is moved into camera space coordinate system, obtained
Map datum under camera space coordinate system is specifically included：
Utilize the translational coordination system M pre-set0Map datum under the inertial coodinate system is moved into phase
Machine space coordinates, obtain the map datum under camera space coordinate system；
Wherein, it is describedThe 3*3 in upper left corner matrix is unit square in the matrix
Battle array；(xp0, yp0, zp0) be the camera space coordinate system any one coordinate, xp0Represent level side
To translational component, yp0Represent the translational component of vertical direction, zp0Represent the translational component of vertical direction.
A kind of map rendering device, including：
Mode parameter acquiring unit, for obtaining map render mode and map rendering parameter；
Position acquisition unit, the current location for obtaining terminal device；
Map datum acquiring unit, for according to the current of the map rendering parameter and the terminal device
Position, obtains map datum corresponding with the map render mode；
Map rendering unit, for the map datum got to be entered according to the map render mode
Row is rendered.
It is preferred that, the map rendering parameter at least includes map scale, the resolution of terminal device screen
Rate and picture element density, the map datum acquiring unit include：
Geographic factor acquiring unit, for point according to the map scale, the terminal device screen
Resolution and picture element density, obtain the geographic factor of the map of the terminal device screen display；
Map datum obtains subelement, for the geographic factor according to the map and the terminal device
Current location, obtains map datum corresponding with the map render mode.
It is preferred that, the geographic factor acquiring unit includes：
Scaling factor computing unit, for utilizing the map scale and the terminal device screen
Picture element density, obtains scaling factor；
Geographic factor obtains subelement, for the resolution ratio and the ratio according to the terminal device screen
Chi coefficient, obtains the geographic factor of the map of the terminal device screen display.
It is preferred that, the map render mode is the three-dimensional map render mode of first person, described
Geographic factor, which obtains subelement, to be included：
Level geography length computation unit, for the level in the resolution ratio according to the terminal device screen
Pixel value and the scaling factor, the level geography for obtaining the map of the terminal device screen display are long
Degree；
Geographic factor determining unit, the map for obtaining the terminal device screen display pre-set
Vertical geographical length, the geographical length of the level and the vertical geographical length are the terminal device screen
The geographic factor of the map of curtain display.
It is preferred that, the current location of the terminal device includes longitude coordinate and latitude coordinate, the map
Data acquisition subelement includes：
Computing unit, for the longitude coordinate in the current location according to the terminal device and the map
The geographical length of level, obtain the minimum longitude coordinate of map that the terminal device shows in the horizontal direction
With maximum longitude coordinate；
Determining unit, for the latitude coordinate in the current location of the terminal device to be defined as into the end
Minimum latitude coordinate of the map that end equipment is shown in vertical direction；
Translation unit, for the minimum latitude coordinate to be translated into the vertical geographical length, obtains described
Maximum latitude coordinate of the map that terminal device is shown in vertical direction；
Acquiring unit, falls into by the maximum longitude coordinate, maximum latitude for obtaining geographical coordinate position
The map datum in geographic range that coordinate, minimum longitude coordinate and minimum latitude coordinate are constituted.
It is preferred that, the map rendering unit includes：
Coordinate system transformation unit, for according to scaling factor and the corresponding visual angle of the map render mode,
The map anglec of rotation, the map datum is transformed under the map render mode from latitude and longitude coordinates system
Inertial coodinate system map datum, the origin of coordinates of the inertial coodinate system works as the terminal device
Front position；
Coordinate system translation unit, the inertia is used as any one coordinate using camera space coordinate system
The new origin of coordinates of coordinate system, camera space coordinate is moved to by the map datum under the inertial coodinate system
System, obtains the map datum under camera space coordinate system；
Projecting cell, it is empty for the map datum under the camera space coordinate system to be projected into the camera
Between coordinate system represent the coordinate surface of camera screen, obtain the map datum under two-dimensional screen coordinates system；
Raster unit, for being entered by rasterization process to the map datum under the two-dimensional screen coordinates system
Row is rendered.
The application provides a kind of map rendering intent and device, by obtaining map render mode and map wash with watercolours
Contaminate parameter；Obtain the current location of terminal device；And rendering parameter and terminal device according to the map is current
Position, obtains map datum corresponding with map render mode；And then by the map datum got according to
The mode that map render mode is rendered, it is ensured that the map that map rendering result needs according to user is rendered
Pattern is rendered, to reduce map rendering result to the substitution sense of user and the experience of actually driving of user
Between gap.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing used required for applying in example or description of the prior art is briefly described, it should be apparent that, below
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, other accompanying drawings can also be obtained according to the accompanying drawing of offer.
A kind of map rendering effect figure for getting a bird's eye view pattern three-dimensional map that Fig. 1 provides for the embodiment of the present application；
A kind of map rendering intent flow chart that Fig. 2 provides for the embodiment of the present application；
A kind of rendering parameter according to the map and the present bit of terminal device that Fig. 3 provides for the embodiment of the present application
Put, obtain the method flow diagram of map datum corresponding with map render mode；
A kind of engineer's scale according to the map that Fig. 4 provides for the embodiment of the present application, the resolution ratio of terminal device screen
And picture element density, obtain the method flow diagram of the geographic factor of the map of terminal device screen display；
A kind of resolution ratio and engineer's scale system according to terminal device screen that Fig. 5 provides for the embodiment of the present application
Number, obtains the method flow diagram of the geographic factor of the map of terminal device screen display；
A kind of geographic factor and terminal device according to the map that Fig. 6 provides for the embodiment of the present application it is current
Position, obtains the method flow diagram of map datum corresponding with map render mode；
A kind of geographic factor and terminal device according to the map that Fig. 7 provides for the embodiment of the present application it is current
Position, obtains the coordinate schematic diagram of map datum corresponding with map render mode；
Fig. 8 for the embodiment of the present application provide it is a kind of by the map datum got according to map render mode
The method flow diagram rendered；
A kind of map for first person pattern three-dimensional map that Fig. 9 provides for the embodiment of the present application is rendered
Design sketch；
A kind of structural representation for map rendering device that Figure 10 provides for the embodiment of the present application；
A kind of detailed construction schematic diagram for map datum acquiring unit that Figure 11 provides for the embodiment of the present application；
A kind of detailed construction schematic diagram for geographic factor acquiring unit that Figure 12 provides for the embodiment of the present application；
Figure 13 obtains the detailed construction signal of subelement for a kind of geographic factor that the embodiment of the present application is provided
Figure；
Figure 14 obtains the detailed construction signal of subelement for a kind of map datum that the embodiment of the present application is provided
Figure；
A kind of detailed construction schematic diagram for map rendering unit that Figure 15 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
The embodiment being not all of.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
A kind of map rendering intent flow chart that Fig. 2 provides for the embodiment of the present application.
As shown in Fig. 2 this method includes：
S201, acquisition map render mode and map rendering parameter；
In actual applications, obtaining the method for map render mode includes：
Receive and map render mode is carried in map render request, map render request；Or, read pre-
The map render mode first set.Under normal circumstances, electronic map software can be supplied to user a variety ofly
Figure render mode is selected, such as, 2D field-of-view modes, 3D field-of-view modes, wherein 3D field-of-view modes
Can be specifically to get a bird's eye view the map carried in pattern or first person pattern, map render request to render
Pattern or the map render mode pre-set, are that user is supplied to user's many from electronic map software
Plant the one kind selected in map render mode, such as first person pattern.
The concrete application scene of above-mentioned acquisition map render mode can be, when electronic map software starts,
Read the map render mode pre-set；During using electronic map software, if user switches
Map render mode, then receive and carried in map render request, the map render request after switching
Map render mode.Such as, during using electronic map software, user by map render mode from
Get a bird's eye view pattern switching to first person pattern, then the map render request received, the map is rendered please
The map render mode for asking carrying is first person pattern.
Citing is only and more clearly the embodiment of the present application is illustrated above, and those skilled in the art can root
According to product demand, selection obtains the method for map render mode and the concrete application scene of correlation method,
Citing is not construed as the limitation to embodiment of the present invention above.
S202, the current location for obtaining terminal device；
In actual applications, terminal device is mobile phone, tablet personal computer etc..
Citing is only and more clearly the embodiment of the present application is illustrated above, and those skilled in the art can root
According to product demand, a kind of terminal for map rendering intent concrete application that selection the embodiment of the present application is provided is set
The standby form of expression, above citing is not construed as the limitation to embodiment of the present invention.
The current location of S203, according to the map rendering parameter and terminal device, is obtained and map render mode
Corresponding map datum；
In the embodiment of the present application, it is preferred that the current location of rendering parameter and terminal device according to the map,
The map datum corresponding with map render mode got is map datum to be rendered.
S204, the map datum got rendered according to map render mode.
In the embodiment of the present application, it is preferred that when getting map datum corresponding with map render mode
Afterwards, the map datum got need to be rendered render mode according to the map, knot is rendered to obtain map
Really, i.e. the map rendering result terminal device screen shows electronic map.
It is existing in order to be more clearly illustrated to a kind of map rendering intent that the embodiment of the present application is provided
Rendering parameter according to the map and terminal device in a kind of map rendering intent provided the embodiment of the present application
Current location, the process for obtaining corresponding with map render mode map datum describes in detail.
A kind of rendering parameter according to the map and the present bit of terminal device that Fig. 3 provides for the embodiment of the present application
Put, obtain the method flow diagram of map datum corresponding with map render mode, in this embodiment, ground
Figure rendering parameter includes the picture of map scale, the resolution ratio of terminal device screen and/or terminal device screen
Plain density, this method includes：
S301, according to the map engineer's scale, the resolution ratio of terminal device screen and picture element density, obtain terminal
The geographic factor for the map that device screen is shown；
S302, geographic factor according to the map and terminal device current location, obtain and render mould with map
The corresponding map datum of formula.
The method that map datum corresponding with map render mode is obtained shown in Fig. 3, only the application are provided
A kind of preferred embodiment, any deformation on the basis of the above method, such as increase map rendering parameter
Species or reduce map rendering parameter species etc., should be regarded as disclosure technical scheme and provided phase
Answer technical inspiration.
Engineer's scale according to the map, terminal in a kind of map rendering intent now provided the embodiment of the present application
The resolution ratio and picture element density of device screen, obtain the geographic factor of the map of terminal device screen display
Process describes in detail.
The resolution of a kind of engineer's scale according to the map, terminal device screen that Fig. 4 provides for the embodiment of the present application
Rate and picture element density, obtain the method flow diagram of the geographic factor of the map of terminal device screen display.
As shown in figure 4, this method includes：
S401, using map scale and the picture element density of terminal device screen, obtain scaling factor；
In the embodiment of the present application, it is preferred that use the reciprocal divided by terminal device screen of map scale
Picture element density, obtains the scaling factor of terminal device screen, i.e. using map scale it is reciprocal as
Divisor, and, using the picture element density of terminal device screen as dividend, division arithmetic is done, end is obtained
The scaling factor of end equipment screen.
Using map scale as 1：1KM, the picture element density of terminal device screen is progress exemplified by 25d/cm
Explanation.Wherein, map scale is 1：1KM, expression is display screen 1cm (centimetre) length etc.
In the distance on the spot of actual 1KM, i.e. 1 km, the picture element density of terminal device screen represents for 25d/cm
1cm is equal to 25d (pixel) on display screen, then, the distance on the spot that display screen is shown per pixel energy is
1000m/25d=40m/d (rice/pixel), i.e. scaling factor are 40.Also therefore, implement in the application
In example, scaling factor is that every pixel of terminal device screen corresponds to 40m distance on the spot for 40 expressions.
S402, resolution ratio and scaling factor according to terminal device screen, obtain terminal device screen and show
The geographic factor of the map shown.
In the embodiment of the present application, it is preferred that when map render mode be first person dimensionally
During figure render mode, in the embodiment of the present application, it is preferred that scaling factor includes three components, respectively
For the component of vertical direction, vertically-oriented component, horizontal direction component, and these three components is big
It is small identical.A kind of resolution ratio and scaling factor according to terminal device screen that the embodiment of the present application is provided,
The method for obtaining the geographic factor of the map of terminal device screen display refers to Fig. 5, as shown in figure 5, should
Method includes：
S501, according to the horizontal pixel value and scaling factor in the resolution ratio of terminal device screen, obtain
The geographical length of the level of the map of terminal device screen display；
In the embodiment of the present application, it is preferred that the resolution ratio of terminal device screen includes terminal device screen
The horizontal pixel value of curtain.
It is only the preferred embodiment of the embodiment of the present application above, inventor can arbitrarily set according to the demand of oneself
The content that the resolution ratio of terminal device screen includes is put, the resolution ratio of such as terminal device screen is included eventually
The horizontal pixel value and vertical pixel value of end equipment screen, are not limited herein.
In the embodiment of the present application, it is preferred that when the resolution ratio of terminal device screen includes horizontal pixel
During value, the water of the map of terminal device screen display is can obtain using the horizontal pixel value and scaling factor
Manage length in level land.
In the embodiment of the present application, it is preferred that according to the horizontal pixel in the resolution ratio of terminal device screen
Value and scaling factor, obtaining the process of the geographical length of level of the map of terminal device screen display includes：
Scaling factor is multiplied by using the horizontal pixel value in the resolution ratio of terminal device screen, and then by product knot
Really as the geographical length of level of the map of terminal device screen display.
In the embodiment of the present application, it is preferred that utilize the horizontal pixel in the resolution ratio of terminal device screen
Value is multiplied by scaling factor, and result of product is long as the level geography of the map of terminal device screen display
The process of degree includes：The Horizontal component values of the component of scaling factor in the horizontal direction are obtained, terminal is utilized
Horizontal pixel value in the resolution ratio of device screen is multiplied by the Horizontal component values got, and result of product is made
For the geographical length of level of the map of terminal device screen display.
The vertical geographical length of the map for the terminal device screen display that S502, acquisition are pre-set, level
Geographical length and vertically geographical length are the geographic factor of the map of terminal device screen display.
In the embodiment of the present application, it is preferred that be previously provided with terminal device screen display map hang down
Straight geography length.When in the resolution ratio and scaling factor according to terminal device screen, terminal device is obtained
During the geographic factor of the map of screen display, the map of obtained terminal device screen display is calculated
Level geographical length after, then the map for directly obtaining the terminal device screen display pre-set hangs down
Straight geography length, so will calculate the geographical length of obtained level and the vertical geographical length got as
The geographic factor of the map of terminal device screen display.
In the embodiment of the present application, it is preferred that inventor can arbitrarily set according to the demand of oneself and set in advance
The concrete numerical value for the vertical geographical length put, is not limited herein.
Further, a kind of map rendering intent that the embodiment of the present application is provided is entered in order to more clear
Row illustrates that the geography according to the map in a kind of map rendering intent now provided the embodiment of the present application is joined
The current location of number and terminal device, the process for obtaining map datum corresponding with map render mode is carried out
It is discussed in detail.
A kind of geographic factor and terminal device according to the map that Fig. 6 provides for the embodiment of the present application it is current
Position, obtains the method flow diagram of map datum corresponding with map render mode, and Fig. 7 is that the application is real
A kind of current location of geographic factor and terminal device according to the map of example offer is provided, obtained and map wash with watercolours
The coordinate schematic diagram of the corresponding map datum of dye pattern.In this embodiment, the current location of terminal device
Including longitude coordinate and latitude coordinate, understand that this method includes with reference to Fig. 6 and Fig. 7：
S601, according to the geographical length of longitude coordinate and the level of map in the current location of terminal device,
Obtain the minimum longitude coordinate and maximum longitude coordinate of map that terminal device shows in the horizontal direction；
In the embodiment of the present application, it is preferred that when the current location of terminal device includes working as terminal device
When the longitude coordinate and latitude coordinate of front position, a kind of geography according to the map that the embodiment of the present application is provided
The current location of parameter and terminal device, the method for obtaining map datum corresponding with map render mode,
Firstly the need of the geographical length of level of the longitude coordinate in the current location according to terminal device and map, obtain
The minimum longitude coordinate and maximum longitude coordinate of the map shown to terminal device in the horizontal direction.
Referring to Fig. 7, wherein, 71 represent the current location of terminal device, and 72 represent that terminal device screen is empty
Between, the parallelogram in 73 represents the geographic factor of map, and one side L of parallelogram represents advance
The vertical geographical length of the map of the terminal device screen display of setting, the another side W tables of parallelogram
Show the geographical length of level of the map of terminal device screen display.
Understood with reference to Fig. 7, in the embodiment of the present application, it is preferred that according to the current location of terminal device
In the geographical length of the level of longitude coordinate and map, obtain map that terminal device shows in the horizontal direction
Minimum longitude coordinate and the method for maximum longitude coordinate include：It regard the longitude coordinate of terminal device as side
Long W central point, the geographical length of level that the longitude coordinate of terminal device is translated into W/2 along X-direction,
Obtain the maximum longitude coordinate of map that terminal device shows in the horizontal direction；The longitude of terminal device is sat
It is denoted as length of side W central point, the water by the longitude coordinate of terminal device along X-axis opposite direction translation W/2
Length is managed on level land, obtains the minimum longitude coordinate of map that terminal device shows in the horizontal direction.
S602, the latitude coordinate in the current location of terminal device is defined as to the map that terminal device is shown
In the minimum latitude coordinate of vertical direction；
S603, by the geographical length of minimum latitude coordinate translation vertical, obtain the map that terminal device shows and exist
The maximum latitude coordinate of vertical direction；
Understand that step S602 and step the S603 process that implements include with reference to Fig. 7：Terminal is set
Latitude coordinate in standby current location is defined as the minimum latitude of map that terminal device shows in vertical direction
Coordinate is spent, the level that the latitude coordinate in the current location of terminal device is translated into L along Z-direction is geographical
Length, obtains the maximum latitude coordinate of map that terminal device shows in vertical direction.
S604, acquisition geographical coordinate position are fallen into by maximum longitude coordinate, maximum latitude coordinate, minimum warp
The map datum spent in the geographic range that coordinate and minimum latitude coordinate are constituted.
In the embodiment of the present application, it is preferred that obtain geographical coordinate position fall into by maximum longitude coordinate,
The map datum in geographic range that maximum latitude coordinate, minimum longitude coordinate and minimum latitude coordinate are constituted,
The map datum got is the current location of geographic factor according to the map and terminal device, is obtained
The map datum corresponding with map render mode arrived.
Further, a kind of map rendering intent that the embodiment of the present application is provided is entered in order to more clear
Row illustrates, in a kind of map rendering intent now provided the embodiment of the present application by the map number got
Described in detail according to the process rendered according to map render mode.
Fig. 8 for the embodiment of the present application provide it is a kind of by the map datum got according to map render mode
The method flow diagram rendered.
As shown in figure 8, this method includes：
S801, according to scaling factor and the corresponding visual angle of map render mode, the map anglec of rotation, will
Map datum is transformed to the map datum of the inertial coodinate system under map render mode from latitude and longitude coordinates system,
The origin of coordinates of inertial coodinate system is the current location of terminal device；
In the embodiment of the present application, it is preferred that the corresponding visual angle of map render mode is to render mould by map
What formula was pre-set, it indicates the angle of sight and horizontal plane, namely the angle of pitch.
It is only the preferred embodiment of the embodiment of the present application above, inventor can arbitrarily set according to the demand of oneself
The set-up mode at visual angle is put, such as sets visual angle corresponding with active user's sight to implement as the application in real time
Visual angle in example etc., is not limited herein.
In the embodiment of the present application, it is preferred that the map anglec of rotation is calculated in real time, it indicates current
The angle of sight and vertical plane.
It is only the preferred embodiment of the embodiment of the present application above, inventor can arbitrarily set according to the demand of oneself
The set-up mode of the map anglec of rotation is put, the map anglec of rotation is such as set to preset value, not done herein
Limit.
S802, using any one coordinate of camera space coordinate system as the new origin of coordinates of inertial coodinate system,
Map datum under inertial coodinate system is moved into camera space coordinate system, obtained under camera space coordinate system
Map datum；
In the embodiment of the present application, it is preferred that any one coordinate of camera space coordinate system is usually phase
The origin of coordinates of machine space coordinates, this origin of coordinates is generally indicated with (the screen of camera lens in camera space
Curtain) bottom center be origin, such as coordinate points (0,0,0).
It is only the preferred embodiment of the embodiment of the present application above, inventor can arbitrarily set according to the demand of oneself
The specific coordinate as the new origin of coordinates is put, is not limited herein.
S803, the map datum under camera space coordinate system is projected into camera space coordinate system represent camera
The coordinate surface of screen, obtains the map datum under two-dimensional screen coordinates system；
S804, by rasterization process the map datum under two-dimensional screen coordinates system is rendered.
Further, a kind of map rendering intent that the embodiment of the present application is provided is entered in order to more clear
Row illustrates that now the embodiment of the present application is provided is a kind of corresponding according to scaling factor and map render mode
Visual angle, the map anglec of rotation, map datum is transformed under map render mode from latitude and longitude coordinates system
The process of map datum of inertial coodinate system describe in detail.
In the embodiment of the present application, it is preferred that utilize transformation matrix of coordinates M set in advance1By map number
According to the map datum for the inertial coodinate system being transformed to from latitude and longitude coordinates system under map render mode；
Wherein, M1=Mt*S1*R1；
Wherein, the 3*3 in upper left corner matrix is unit matrix in matrix；(-x0,
-y0,-z0) it is translational coordination, the current location of instruction terminal equipment, x0Represent the translation point of horizontal direction
Amount, y0Represent the translational component of vertical direction, z0Represent the translational component of vertical direction；
Wherein, the 3*3 matrixes in the upper left corner are scaled matrix in matrix, represent three-dimensional space
Between in each axle amplification coefficient, Sx1For the scaling factor of map scale in the horizontal direction；Sy1For map
Scaling factor of the engineer's scale in vertical direction；Sz1For map scale vertical direction scaling factor；
Wherein, in matrix the upper left corner 3*3 matrix representative spin matrixs,
(rxx1,rxy1,rxz1) visual angle is represented, (ryx1,ryy1,ryz1) represent the map anglec of rotation, (rzx1,rzy1,rzz1) generation
Table ground gyration.
In the embodiment of the present application, it is preferred that (rzx1,rzy1,rzz1) it is generally equal to (0,0,0),
To indicate that ground does not rotate.
It is only the preferred embodiment of the embodiment of the present application above, inventor can arbitrarily set according to the demand of oneself
Put (rzx1,rzy1,rzz1) concrete numerical value, do not limit herein.
Further, a kind of map rendering intent that the embodiment of the present application is provided is entered in order to more clear
Row illustrates that a kind of any one coordinate with camera space coordinate system now provided the embodiment of the present application is made
For the new origin of coordinates of inertial coodinate system, the map datum under inertial coodinate system is moved into camera space and sat
Mark system, the process for obtaining the map datum under camera space coordinate system describes in detail.
In the embodiment of the present application, it is preferred that utilize the translational coordination system M pre-set0By inertial coordinate
Map datum under system moves to camera space coordinate system, obtains the map datum under camera space coordinate system；
Wherein,The 3*3 in upper left corner matrix is unit matrix in matrix；(xp0,
yp0, zp0) be camera space coordinate system any one coordinate, xp0The translational component of horizontal direction is represented,
yp0Represent the translational component of vertical direction, zp0Represent the translational component of vertical direction.
In the embodiment of the present application, it is preferred that any one coordinate of camera space coordinate system is usually phase
The origin of coordinates of machine space coordinates, this origin of coordinates is generally indicated with (the screen of camera lens in camera space
Curtain) bottom center be origin, such as coordinate points (0,0,0).
In the embodiment of the present application, it is preferred that when any one coordinate of camera space coordinate system is camera
During the origin of coordinates (0,0,0) of space coordinates,
Further, a kind of map rendering intent that the embodiment of the present application is provided is entered in order to more clear
Row illustrates that the map datum under a kind of coordinate system by camera space now provided the embodiment of the present application is projected
The coordinate surface of camera screen is represented to camera space coordinate system, the map number under two-dimensional screen coordinates system is obtained
According to process describe in detail.
In the embodiment of the present application, it is preferred that will using the perspective projection matrix projection pre-set
Map datum under camera space coordinate system projects to the coordinate that camera space coordinate system represents camera screen
Face, obtains the map datum under two-dimensional screen coordinates system, wherein,
Wherein, perspective projection matrix projection
Last column -1 represent be odd space coordinates normalization after coefficient.
Specifically, perspective projection matrix projection is prior art, it is relevant to perspective projection matrix
Projection description refers to prior art, will not be described here.
Referring to Fig. 1 and Fig. 9, wherein, Fig. 1 gets a bird's eye view pattern three-dimensional map for one kind that the embodiment of the present application is provided
Map rendering effect figure (current location of the indicating intelligent terminal of arrow 11 in Fig. 1)；Fig. 9 is this Shen
Please embodiment provide a kind of first person pattern three-dimensional map map rendering effect figure (arrow 91
The current location of indicating intelligent terminal).
Can clearly it be learnt with reference to Fig. 1 and Fig. 9, a kind of map rendering intent that the embodiment of the present application is provided exists
Rendering result when map render mode is the three-dimensional map render mode of first person is to generation of user
The gap entered between sense and the experience of actually driving of user is significantly less than, when map render mode is to get a bird's eye view three
Rendering result during dimension map render mode is between the substitution sense of user and the experience of actually driving of user
Gap.
The application provides a kind of map rendering intent, by obtaining map render mode and map rendering parameter；
Obtain the current location of terminal device；And the current location of rendering parameter and terminal device according to the map, obtain
Take map datum corresponding with map render mode；And then render the map datum got according to map
The mode that pattern is rendered, it is ensured that the map render mode that map rendering result needs according to user is carried out
Render, to reduce map rendering result to the difference between the substitution sense of user and the experience of actually driving of user
Away from.
A kind of structural representation for map rendering device that Figure 10 provides for the embodiment of the present application.
As shown in Figure 10, the device includes：
Mode parameter acquiring unit 101, for obtaining map render mode and map rendering parameter；
Position acquisition unit 102, the current location for obtaining terminal device；
Map datum acquiring unit 103, for the current location of rendering parameter according to the map and terminal device,
Obtain map datum corresponding with map render mode；
Map rendering unit 104, for the map datum got to be carried out into wash with watercolours according to map render mode
Dye.
In the embodiment of the present application, it is preferred that mode parameter acquiring unit 101 receives map render request,
Map render mode is carried in map render request；Or, read the map render mode pre-set.
A kind of detailed construction schematic diagram for map datum acquiring unit that Figure 11 provides for the embodiment of the present application.
In the embodiment of the present application, it is preferred that map rendering parameter at least includes map scale, terminal
The resolution ratio and picture element density of device screen.As shown in figure 11, map datum acquiring unit includes：
Geographic factor acquiring unit 111, for engineer's scale according to the map, the resolution ratio of terminal device screen and
Picture element density, obtains the geographic factor of the map of terminal device screen display；
Map datum obtains subelement 112, for geographic factor according to the map and the present bit of terminal device
Put, obtain map datum corresponding with map render mode.
A kind of detailed construction schematic diagram for geographic factor acquiring unit that Figure 12 provides for the embodiment of the present application.
As shown in figure 12, geographic factor acquiring unit includes：
Scaling factor computing unit 121, it is close for the pixel using map scale and terminal device screen
Degree, obtains scaling factor；
Geographic factor obtains subelement 122, for the resolution ratio according to terminal device screen and engineer's scale system
Number, obtains the geographic factor of the map of terminal device screen display.
Figure 13 obtains the detailed construction signal of subelement for a kind of geographic factor that the embodiment of the present application is provided
Figure.
In the embodiment of the present application, it is preferred that map render mode is the three-dimensional map of first person
Render mode.As shown in figure 13, geographic factor obtains subelement and included：
Level geography length computation unit 131, for the level picture in the resolution ratio according to terminal device screen
Element value and scaling factor, obtain the geographical length of level of the map of terminal device screen display；
Geographic factor determining unit 132, the map of the terminal device screen display pre-set for acquisition
Vertical geography length, level geography length and vertical geographical length are the map of terminal device screen display
Geographic factor.
Figure 14 obtains the detailed construction signal of subelement for a kind of map datum that the embodiment of the present application is provided
Figure.
In the embodiment of the present application, it is preferred that the current location of terminal device includes longitude coordinate and latitude
Coordinate.As shown in figure 14, map datum obtains subelement and included：
Computing unit 141, for the longitude coordinate and the level of map in the current location according to terminal device
Geographical length, obtains the minimum longitude coordinate and maximum longitude of map that terminal device shows in the horizontal direction
Coordinate；
Determining unit 142, terminal device is defined as the latitude coordinate in the current location by terminal device
Minimum latitude coordinate of the map of display in vertical direction；
Translation unit 143, for by the geographical length of minimum latitude coordinate translation vertical, obtaining terminal device and showing
Maximum latitude coordinate of the map shown in vertical direction；
Acquiring unit 144, falls into by maximum longitude coordinate, maximum latitude seat for obtaining geographical coordinate position
The map datum in geographic range that mark, minimum longitude coordinate and minimum latitude coordinate are constituted.
A kind of detailed construction schematic diagram for map rendering unit that Figure 15 provides for the embodiment of the present application.
As shown in figure 15, map rendering unit includes：
Coordinate system transformation unit 151, for according to scaling factor and the corresponding visual angle of map render mode,
The map anglec of rotation, inertia map datum being transformed to from latitude and longitude coordinates system under map render mode is sat
The map datum of system is marked, the origin of coordinates of inertial coodinate system is the current location of terminal device；
Coordinate system translation unit 152, sits for any one coordinate using camera space coordinate system as inertia
The new origin of coordinates of mark system, moves to camera space coordinate system by the map datum under inertial coodinate system, obtains
Map datum under camera space coordinate system；
Projecting cell 153, for the map datum under camera space coordinate system to be projected into camera space coordinate
System represents the coordinate surface of camera screen, obtains the map datum under two-dimensional screen coordinates system；
Raster unit 154, for being carried out by rasterization process to the map datum under two-dimensional screen coordinates system
Render.
The application provides a kind of map rendering device, by obtaining map render mode and map rendering parameter；
Obtain the current location of terminal device；And the current location of rendering parameter and terminal device according to the map, obtain
Take map datum corresponding with map render mode；And then render the map datum got according to map
The mode that pattern is rendered, it is ensured that the map render mode that map rendering result needs according to user is carried out
Render, to reduce map rendering result to the difference between the substitution sense of user and the experience of actually driving of user
Away from.
It should be noted that each embodiment in this specification is described by the way of progressive, each
What embodiment was stressed is all identical similar between the difference with other embodiment, each embodiment
Part mutually referring to.For device class embodiment, due to the basic phase of itself and embodiment of the method
Seemingly, so what is described is fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires
Or imply between these entities or operation there is any this actual relation or order.Moreover, art
Language " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that bag
Process, method, article or the equipment of a series of key elements are included not only including those key elements, but also including
Other key elements being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...",
It is not precluded from the process including key element, method, article or equipment also the presence of other identical element.
Detailed Jie has been carried out to a kind of three-dimensional navigation map rendering intent and device provided by the present invention above
Continue, specific case used herein is set forth to the principle and embodiment of the present invention, and the above is real
The explanation for applying example is only intended to the method and its core concept for helping to understand the present invention；Simultaneously for ability
The those skilled in the art in domain, according to the thought of the present invention, can in specific embodiments and applications
There is change part, to sum up, this specification content should not be construed as limiting the invention.
Claims (15)
1. a kind of map rendering intent, it is characterised in that including：
Obtain map render mode and map rendering parameter；
Obtain the current location of terminal device；
According to the current location of the map rendering parameter and the terminal device, obtain and the map wash with watercolours
The corresponding map datum of dye pattern；
The map datum got is rendered according to the map render mode.
2. according to the method described in claim 1, it is characterised in that the acquisition map render mode tool
Body includes：
Receive and map render mode is carried in map render request, the map render request；
Or,
Read the map render mode pre-set.
3. according to the method described in claim 1, it is characterised in that the map rendering parameter is at least wrapped
Map scale, the resolution ratio of terminal device screen and picture element density are included, it is described to be rendered according to the map
The current location of parameter and the terminal device, obtains map datum corresponding with the map render mode
Specifically include：
According to the map scale, the resolution ratio of the terminal device screen and picture element density, institute is obtained
State the geographic factor of the map of terminal device screen display；
According to the current location of the geographic factor of the map and the terminal device, obtain and the map
The corresponding map datum of render mode.
4. method according to claim 3, it is characterised in that it is described according to the map scale,
The resolution ratio and picture element density of the terminal device screen, obtain the map of the terminal device screen display
Geographic factor specifically include：
Using the map scale and the picture element density of the terminal device screen, scaling factor is obtained；
According to the resolution ratio and the scaling factor of the terminal device screen, the terminal device is obtained
The geographic factor of the map of screen display.
5. method according to claim 4, it is characterised in that the map render mode is first
People claims the three-dimensional map render mode at visual angle, the resolution ratio according to the terminal device screen and described
Scaling factor, the geographic factor for obtaining the map of the terminal device screen display is specifically included：
Horizontal pixel value and the scaling factor in the resolution ratio of the terminal device screen, are obtained
To the geographical length of level of the map of the terminal device screen display；
Obtain the vertical geographical length of the map of the terminal device screen display pre-set, the water
Manage the geographical ginseng of length and the vertical geographical length for the map of the terminal device screen display in level land
Number.
6. method according to claim 5, it is characterised in that the current location of the terminal device
Including longitude coordinate and latitude coordinate, the geographic factor according to the map and the terminal device
Current location, obtains map datum corresponding with the map render mode and specifically includes：
The level geography of longitude coordinate and the map in the current location of the terminal device is long
Degree, obtains the minimum longitude coordinate and maximum longitude seat of map that the terminal device show in the horizontal direction
Mark；
Latitude coordinate in the current location of the terminal device is defined as the ground that the terminal device is shown
Minimum latitude coordinate of the figure in vertical direction；
The minimum latitude coordinate is translated into the vertical geographical length, obtains what the terminal device was shown
Maximum latitude coordinate of the map in vertical direction；
Geographical coordinate position is obtained to fall into by the maximum longitude coordinate, maximum latitude coordinate, minimum longitude
The map datum in geographic range that coordinate and minimum latitude coordinate are constituted.
7. the method according to claim 5 or 6, it is characterised in that it is described will get described in
Map datum according to the map render mode render specifically including：
According to scaling factor and the corresponding visual angle of the map render mode, the map anglec of rotation, by institute
State the map for the inertial coodinate system that map datum is transformed to from latitude and longitude coordinates system under the map render mode
Data, the origin of coordinates of the inertial coodinate system is the current location of the terminal device；
Using any one coordinate of camera space coordinate system as the new origin of coordinates of the inertial coodinate system,
Map datum under the inertial coodinate system is moved into camera space coordinate system, camera space coordinate is obtained
Map datum under system；
Map datum under the camera space coordinate system is projected into the camera space coordinate system and represents phase
The coordinate surface of machine screen, obtains the map datum under two-dimensional screen coordinates system；
The map datum under the two-dimensional screen coordinates system is rendered by rasterization process.
8. method according to claim 7, it is characterised in that described according to scaling factor and institute
The corresponding visual angle of map render mode, the map anglec of rotation are stated, by the map datum from latitude and longitude coordinates
The map datum for the inertial coodinate system that system is transformed under the map render mode is specifically included：
Utilize transformation matrix of coordinates M set in advance1The map datum is transformed to from latitude and longitude coordinates system
The map datum of inertial coodinate system under the map render mode；
Wherein, the M1=Mt*S1*R1；
000000 wherein, and the 3*3 in upper left corner matrix is unit matrix in the matrix；
(-x0,-y0,-z0) it is translational coordination, indicate the current location of the terminal device, x0Represent level
The translational component in direction, y0Represent the translational component of vertical direction, z0Represent the translational component of vertical direction；
Wherein, the 3*3 matrixes in the upper left corner are scaled matrix to x1y1z1 in the matrix, represent three
The amplification coefficient of each axle, S in dimension spacex1For the scaling factor of the map scale in the horizontal direction；
Sy1For the map scale vertical direction scaling factor；Sz1It is the map scale vertical
The scaling factor in direction；
X1y1z1x1y1z1x1y1z1 wherein, the 3*3 matrix representative spin matrixs in the upper left corner in the matrix,
(rxx1,rxy1,rxz1) represent the visual angle, (ryx1,ryy1,ryz1) represent the map anglec of rotation, (rzx1,rzy1,rzz1)
Represent ground gyration.
9. method according to claim 8, it is characterised in that described with camera space coordinate system
Any one coordinate is as the new origin of coordinates of the inertial coodinate system, by the ground under the inertial coodinate system
Diagram data moves to camera space coordinate system, and the map datum obtained under camera space coordinate system is specifically included：
Utilize the translational coordination system M pre-set0Map datum under the inertial coodinate system is moved into phase
Machine space coordinates, obtain the map datum under camera space coordinate system；
Wherein, it is describedThe 3*3 in upper left corner matrix is unit square in matrix described in p0p0p0p0p0p0
Battle array；(xp0, yp0, zp0) be the camera space coordinate system any one coordinate, xp0Represent level side
To translational component, yp0Represent the translational component of vertical direction, zp0Represent the translational component of vertical direction.
10. a kind of map rendering device, it is characterised in that including：
Mode parameter acquiring unit, for obtaining map render mode and map rendering parameter；
Position acquisition unit, the current location for obtaining terminal device；
Map datum acquiring unit, for according to the current of the map rendering parameter and the terminal device
Position, obtains map datum corresponding with the map render mode；
Map rendering unit, for the map datum got to be entered according to the map render mode
Row is rendered.
11. device according to claim 10, it is characterised in that the map rendering parameter is at least
Including map scale, the resolution ratio of terminal device screen and picture element density, the map datum obtains single
Member includes：
Geographic factor acquiring unit, for point according to the map scale, the terminal device screen
Resolution and picture element density, obtain the geographic factor of the map of the terminal device screen display；
Map datum obtains subelement, for the geographic factor according to the map and the terminal device
Current location, obtains map datum corresponding with the map render mode.
12. device according to claim 11, it is characterised in that the geographic factor acquiring unit
Including：
Scaling factor computing unit, for utilizing the map scale and the terminal device screen
Picture element density, obtains scaling factor；
Geographic factor obtains subelement, for the resolution ratio and the ratio according to the terminal device screen
Chi coefficient, obtains the geographic factor of the map of the terminal device screen display.
13. device according to claim 12, it is characterised in that the map render mode is the
One people claims the three-dimensional map render mode at visual angle, and the geographic factor, which obtains subelement, to be included：
Level geography length computation unit, for the level in the resolution ratio according to the terminal device screen
Pixel value and the scaling factor, the level geography for obtaining the map of the terminal device screen display are long
Degree；
Geographic factor determining unit, the map for obtaining the terminal device screen display pre-set
Vertical geographical length, the geographical length of the level and the vertical geographical length are the terminal device screen
The geographic factor of the map of curtain display.
14. device according to claim 13, it is characterised in that the present bit of the terminal device
Put including longitude coordinate and latitude coordinate, the map datum, which obtains subelement, to be included：
Computing unit, for the longitude coordinate in the current location according to the terminal device and the map
The geographical length of level, obtain the minimum longitude coordinate of map that the terminal device shows in the horizontal direction
With maximum longitude coordinate；
Determining unit, for the latitude coordinate in the current location of the terminal device to be defined as into the end
Minimum latitude coordinate of the map that end equipment is shown in vertical direction；
Translation unit, for the minimum latitude coordinate to be translated into the vertical geographical length, obtains described
Maximum latitude coordinate of the map that terminal device is shown in vertical direction；
Acquiring unit, falls into by the maximum longitude coordinate, maximum latitude for obtaining geographical coordinate position
The map datum in geographic range that coordinate, minimum longitude coordinate and minimum latitude coordinate are constituted.
15. device according to claim 14, it is characterised in that the map rendering unit includes：
Coordinate system transformation unit, for according to scaling factor and the corresponding visual angle of the map render mode,
The map anglec of rotation, the map datum is transformed under the map render mode from latitude and longitude coordinates system
Inertial coodinate system map datum, the origin of coordinates of the inertial coodinate system works as the terminal device
Front position；
Coordinate system translation unit, the inertia is used as any one coordinate using camera space coordinate system
The new origin of coordinates of coordinate system, camera space coordinate is moved to by the map datum under the inertial coodinate system
System, obtains the map datum under camera space coordinate system；
Projecting cell, it is empty for the map datum under the camera space coordinate system to be projected into the camera
Between coordinate system represent the coordinate surface of camera screen, obtain the map datum under two-dimensional screen coordinates system；
Raster unit, for being entered by rasterization process to the map datum under the two-dimensional screen coordinates system
Row is rendered.
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