CN107958484A - Texture coordinate computational methods and device - Google Patents
Texture coordinate computational methods and device Download PDFInfo
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- CN107958484A CN107958484A CN201711276374.6A CN201711276374A CN107958484A CN 107958484 A CN107958484 A CN 107958484A CN 201711276374 A CN201711276374 A CN 201711276374A CN 107958484 A CN107958484 A CN 107958484A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
- A63F13/50—Controlling the output signals based on the game progress
- A63F13/52—Controlling the output signals based on the game progress involving aspects of the displayed game scene
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/30—Polynomial surface description
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
- A63F2300/60—Methods for processing data by generating or executing the game program
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Abstract
The embodiment of the present invention provides a kind of texture coordinate computational methods and device.The described method includes：Obtain each vertex in current game scene in the corresponding each grid quadrangle of road model and the space coordinate of each distributed point；Based on the space coordinate of each vertex and each distributed point in same grid quadrangle, the conversion coefficient in conversion equation of each distributed point between space coordinate and texture coordinate is calculated；According to the conversion equation and the corresponding conversion coefficient of each distributed point being calculated, each distributed point corresponding texture coordinate in road texture mapping is calculated.The texture coordinate computational methods computational accuracy is high, can accurately calculate the texture coordinate of difference in the grid quadrangle of any shape, reduces mapping fault rate, improves player's sensory experience.
Description
Technical field
The present invention relates to scene of game processing technology field, in particular to a kind of texture coordinate computational methods and dress
Put.
Background technology
In 3d gaming, road is part important in scene of game, and the generation of road needs to obtain
Texture coordinate data of the road model in corresponding road texture mapping, in order to which each texel in the road texture mapping is mapped
Corresponding position on to road model, so as to complete road product process.Wherein, high-precision texture coordinate data how is obtained
The problem of being one particularly important.
In the prior art, grid when common texture coordinate calculation is according to road model progress mesh generation
On point calculate texture coordinate to the distance of surrounding section, the computational accuracy of this calculation is not high, it is necessary to mark off
The global shape of grid be in a kind of extremely regular state, the texture that otherwise can not calculate difference in the grid is sat
, easily there is mapping error when carrying out texture mapping, influences the sensory experience of player in mark.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, it is an object of the invention to provide a kind of texture coordinate computational methods
And device, the texture coordinate computational methods computational accuracy is high, in the grid quadrangle that can accurately calculate any shape
The texture coordinate of difference, reduces mapping fault rate, improves player's sensory experience.
For method, preferred embodiments of the present invention provide a kind of texture coordinate computational methods, the described method includes：
Obtain each vertex in current game scene in the corresponding each grid quadrangle of road model and the sky of each distributed point
Between coordinate；
Based on the space coordinate of each vertex and each distributed point in same grid quadrangle, to each distributed point space coordinate with
The conversion coefficient in conversion equation between texture coordinate is calculated；
According to the conversion equation and the corresponding conversion coefficient of each distributed point being calculated, each distributed point is calculated and exists
Corresponding texture coordinate in road texture mapping.
For device, preferred embodiments of the present invention provide a kind of texture coordinate computing device, and described device includes：
Space coordinate acquisition module, for obtaining in the corresponding each grid quadrangle of road model in current game scene
Each vertex and the space coordinate of each distributed point；
Conversion coefficient computing module, for based on the space coordinate of each vertex and each distributed point in same grid quadrangle,
Conversion coefficient in conversion equation of each distributed point between space coordinate and texture coordinate is calculated；
Texture coordinate computing module, for being according to the conversion equation and the corresponding conversion of each distributed point being calculated
Number, is calculated each distributed point corresponding texture coordinate in road texture mapping.
In terms of existing technologies, the texture coordinate computational methods and device that preferred embodiments of the present invention provide have
Following beneficial effect：The texture coordinate computational methods computational accuracy is high, can accurately calculate the grid four of any shape
The texture coordinate of difference in the shape of side, reduces mapping fault rate, improves player's sensory experience.First, the method obtains current
The space coordinate on each vertex and each distributed point in scene of game in the corresponding each grid quadrangle of road model；Then, it is described
Method is based on the space coordinate of each vertex and each distributed point in same grid quadrangle, to each distributed point in space coordinate and texture
The conversion coefficient in conversion equation between coordinate is calculated；Finally, the method according to the conversion equation and calculates
The corresponding conversion coefficient of each distributed point arrived, is calculated each distributed point corresponding texture coordinate in road texture mapping, from
And the texture coordinate of each point in the grid quadrangle of any shape is accurately calculated, the mapping fault rate of texture mapping is reduced,
Improve player's sensory experience.
To enable the above objects, features and advantages of the present invention to become apparent, present pre-ferred embodiments cited below particularly,
And attached drawing appended by coordinating, it is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of the claims in the present invention protection domain, for those of ordinary skill in the art, what is do not made the creative labor
Under the premise of, other relevant attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the block diagram for the computing device that preferred embodiments of the present invention provide.
Fig. 2 is a kind of flow diagram for the texture coordinate computational methods that preferred embodiments of the present invention provide.
Fig. 3 is the flow diagram for the sub-step that the step S210 shown in Fig. 2 includes.
Fig. 4 is another flow diagram for the texture coordinate computational methods that preferred embodiments of the present invention provide.
Fig. 5 is the flow diagram for the sub-step that the step S209 shown in Fig. 4 includes.
Fig. 6 is that a kind of square frame of the texture coordinate computing device shown in Fig. 1 that preferred embodiments of the present invention provide shows
It is intended to.
Fig. 7 is the block diagram of the space coordinate acquisition module shown in Fig. 6.
Fig. 8 is another square frame of the texture coordinate computing device shown in Fig. 1 that preferred embodiments of the present invention provide
Schematic diagram.
Icon：10- computing devices；11- memories；12- processors；13- communication units；14- video card units；100- textures
Coordinate computing device；110- space coordinate acquisition modules；120- conversion coefficient computing modules；130- texture coordinate computing modules；
111- mesh generation submodules；112- trigonometric ratios handle submodule；140- changes equation configuration module；150- textures map mould
Block.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention implementation being usually described and illustrated herein in the accompanying drawings
The component of example can be arranged and designed with a variety of configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained without creative efforts, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
Below in conjunction with the accompanying drawings, elaborate to some embodiments of the present invention.In the case where there is no conflict, it is following
Feature in embodiment and embodiment can be mutually combined.
Fig. 1 is refer to, is the block diagram for the computing device 10 that preferred embodiments of the present invention provide.Of the invention real
Apply in example, the computing device 10 can accurately calculate and drawn by road model in the road building process of 3d gaming
The corresponding texture coordinate of grid quadrangle for the arbitrary shape got, reduces road texture mapping and is mapped to the road model
Mapping fault rate when upper, so as to strengthen the sensory experience of player when player participates in the 3d gaming.Wherein described grid
The corresponding texture coordinate of quadrangle includes forming the texture coordinate corresponding to four vertex of the grid quadrangle, and the grid
Texture coordinate in quadrangle corresponding to the different each point of distributing position.In the present embodiment, the computing device 10 can be,
But it is not limited to, PC (personal computer, PC), tablet computer, personal digital assistant (personal
Digital assistant, PDA) or server etc. with image processing function.
In the present embodiment, the computing device 10 can include texture coordinate computing device 100, memory 11, processing
Device 12, communication unit 13 and video card unit 14.The memory 11, processor 12, communication unit 13 and video card unit 14 are each
Element is directly or indirectly electrically connected between each other, to realize the transmission of data or interaction.For example, these elements are mutual
It can be realized and be electrically connected by one or more communication bus or signal wire.The texture coordinate computing device 100 is included at least
One can be stored in the software function module in the memory 11, the processing in the form of software or firmware (firmware)
Device 12 is stored in software program and module in memory 11 by operation, so as to perform various functions at application and data
Reason.
In the present embodiment, the memory 11 may be, but not limited to, random access memory (Random Access
Memory, RAM), read-only storage (Read Only Memory, ROM), programmable read only memory (Programmable
Read-Only Memory, PROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable Read-Only
Memory, EPROM), electrically erasable programmable read-only memory (Electric Erasable Programmable Read-
Only Memory, EEPROM) etc..Wherein, memory 11 is used for storage program, and the processor 12 is receiving execute instruction
Afterwards, described program is performed.Further, the software program in above-mentioned memory 11 and module may also include operating system, its
May include the various component softwares for management system task (such as memory management, storage device control, power management etc.) and/
Or driving, and can be in communication with each other with various hardware or component software, so as to provide the running environment of other software component.
In the present embodiment, the processor 12 can be a kind of IC chip of the disposal ability with signal.
The processor 12 can be general processor, including central processing unit (Central Processing Unit, CPU), network
Processor (Network Processor, NP) etc..Can realize or perform disclosed each method in the embodiment of the present invention,
Step and logic diagram.General processor can be microprocessor or the processor can also be any conventional processor
Deng.
In the present embodiment, the communication unit 13 is used to establish the computing device 10 with setting outside other by network
Communication connection between standby, and carried out data transmission by the network.
In the present embodiment, the video card unit 14 is used to carry out calculation process to graph data, to alleviate processor 12
Computing pressure.Wherein, the core component of the video card unit 14 is GPU (Graphics Processing Unit, at figure
Manage device), for the pattern data information needed for computing device 10 to be carried out conversion driving, and control display to be shown.
In the present embodiment, the computing device 10 passes through the texture coordinate computing device that is stored in the memory 11
The texture coordinate of each point in each grid quadrangle corresponding to 100 pairs of road models calculates, and obtains high-precision texture
Coordinate, thus in road generating process road texture mapping mapping fault rate, enhancing player participate in game when sensory experience,
Improve the game comfort level of player.
It is understood that the structure shown in Fig. 1 is only a kind of structure diagram of computing device 10, the computing device
10 may also include more either less components than shown in Fig. 1 or have the configuration different from shown in Fig. 1.Shown in Fig. 1
Each component can use hardware, software or its combination realize.
Fig. 2 is refer to, is a kind of flow diagram for the texture coordinate computational methods that preferred embodiments of the present invention provide.
In embodiments of the present invention, the texture coordinate computational methods are applied to above-mentioned computing device 10, below to the line shown in Fig. 2
The idiographic flow and step for managing Coordinate calculation method are described in detail.
In embodiments of the present invention, the texture coordinate computational methods comprise the following steps：
Step S210, obtains each vertex in current game scene in the corresponding each grid quadrangle of road model and each point
The space coordinate layouted.
In the present embodiment, the computing device 10 can be set by network from other electronics to communicate with the computing device 10
Standby place, obtains each vertex in the corresponding each grid quadrangle of the road model and the space coordinate of each distributed point；The meter
Calculating equipment 10 also can be by way of providing external input device, in each grid quadrangle for receiving game programmer's input
Each vertex and the space coordinate of each distributed point；The computing device 10 can also be drawn by directly carrying out grid to the road model
Office is managed and the mode of coordinate identifying processing, and each vertex and the space of each distributed point are sat in each grid quadrangle marked off
Mark.Wherein, to build four vertex during corresponding grid quadrangle, the distributed point is corresponding grid quadrangle on each vertex
The point of interior Arbitrary distribution or regular distribution, the grid quadrangle can be parallelogram, rectangle or irregular quadrilateral.
Alternatively, Fig. 3 is refer to, is the flow diagram for the sub-step that the step S210 shown in Fig. 2 includes.In this hair
In bright embodiment, the step S210 can include sub-step S211 and sub-step S212, the sub-step S211 and the son
Step S212 is as follows：
Sub-step S2111, carries out mesh generation to the road model in current game scene, obtains each net of different shapes
Lattice quadrangle.
In the present embodiment, the computing device 10 carries out mesh generation to the road model in current game scene, obtains
It can include to the step of each grid quadrangle of different shapes：
The road curve in the road model is sampled according to default spacing, is obtained each on the road curve
Sampled point；
Centered on each sampled point, the line between neighbouring sample point is drawn out, and length is equal to the road
The line segment of the road width of model, and four based on the adjacent segments drawn out vertex form four side of grid of correspondingly-shaped
Shape.
Wherein, each line segment drawn out, between the sampled point and the previous sampled point of the sampled point that pass through with the line segment
Line be mutually perpendicular to, and the line segment pass through sampled point be the line segment midpoint.It is made of four vertex of adjacent segments
Grid quadrangle because the degree of crook of road curve and the different of distribution situation of each sampled point can there are different shapes.
Sub-step S212, trigonometric ratio processing is carried out to each grid quadrangle, obtains each vertex in corresponding grid quadrangle
Space coordinate and each distributed point space coordinate.
In the present embodiment, the computing device 10 can be made every by carrying out trigonometric ratio processing to each grid quadrangle
A grid quadrangle can be mutually spliced to form by multiple triangles.The computing device 10 is carrying out three to each grid quadrangle
During angling processing, four vertex of each grid quadrangle corresponding sky in whole space coordinates can be obtained successively
Between be used for the space coordinate that marks off each branch's point of multiple triangles in coordinate, and each grid quadrangle.
Step S220, based on the space coordinate of each vertex and each distributed point in same grid quadrangle, exists each distributed point
The conversion coefficient in conversion equation between space coordinate and texture coordinate is calculated.
In the present embodiment, the conversion equation can characterize the transformational relation between space coordinate and texture coordinate, institute
Conversion proportion of each distributed point in the conversion equation, the meter in corresponding grid quadrangle can be characterized by stating conversion coefficient
The conversion coefficient that the generation of different distributions point is different in same grid quadrangle can be directed to by calculating equipment 10.
In the present embodiment, the space coordinate on four vertex of a grid quadrangle can be expressed as p0, p1, p2 and
The texture coordinate of p3, p0 in corresponding road texture mapping is (0,0), and texture coordinates of the p1 in corresponding road texture mapping is
(1,0), texture coordinates of the p2 in corresponding road texture mapping are (1,1), and textures of the p3 in corresponding road texture mapping is sat
It is designated as (0,1), the corresponding texture coordinates of space coordinate p of a distributed point in the grid quadrangle are (x, y), then described
Conversion equation can be represented by the formula：
Wherein, ac, bc, cd, ab, bd are distributed point conversion coefficient corresponding in the conversion equation, and x is with y
For the abscissa value and ordinate value of the corresponding texture coordinate of the distributed point, then ac=F (A, C), bc=F (B, C), cd=F
(C, D), ab=F (A, B), bd=F (B, D).Wherein A=p0-p, B=p1-p0, C=p3-p0, D=p2+p0-p1-p3, F
((x1, y1), (x2, y2))=x1*y2-x2*y1, the computing device 10 can be according to the skies on each vertex in same grid quadrangle
Between coordinate, and the space coordinate of each distributed point obtains the conversion of each distributed point between the space coordinate and texture coordinate etc.
Corresponding conversion coefficient ac, bc, cd, ab and bd in formula.
Step S230, according to the conversion equation and the corresponding conversion coefficient of each distributed point being calculated, is calculated
Each distributed point corresponding texture coordinate in road texture mapping.
In the present embodiment, the computing device 10 is obtaining the corresponding conversion system of each distributed point in same grid quadrangle
After number ac, bc, cd, ab and bd, asked being calculated based on described conversion coefficient ac, bc, cd, ab and bd in above-mentioned conversion equation
Obtain texture coordinate of the distributed point in corresponding road texture mapping.
Fig. 4 is refer to, is another flow signal for the texture coordinate computational methods that preferred embodiments of the present invention provide
Figure.In embodiments of the present invention, before the step S210, the method can also include：
Step S209, configures the conversion equation between space coordinate and texture coordinate.
Alternatively, Fig. 5 is refer to, is the flow diagram for the sub-step that the step S209 shown in Fig. 4 includes.In this reality
Apply in example, the step S209 can include sub-step S201 and sub-step S202, the sub-step S201 and the sub-step
S202 is as follows：
Sub-step S201, according to the positional information of mapping point of the distributed point on four edges in grid quadrangle, and corresponds to
Texture coordinate of the mapping point in road texture mapping, establishes conversion of each mapping point in space coordinate and texture coordinate and closes
System.
In the present embodiment, texture coordinate of the distributed point in a grid quadrangle in corresponding road texture mapping is
When (x, y), which necessarily maps the mapping point or line that textured abscissa is x on the four edges of the grid quadrangle
The mapping point that ordinate is y is managed, such as, the mapping point that the correspondence texture abscissa for being p4 there are space coordinate on the p0p1 of side is x,
The mapping point that the correspondence texture abscissa for being p5 there are space coordinate on the p3p2 of side is x, the distributed point are then mapped at the two
On the line of point, and transformational relation of the two mapping points in space coordinate and texture coordinate is represented by p4=(p1-p0) *
X+p0, p5=(1-x) * p3+p2, p=(p5-p4) * y+p4, then can obtain p=(1-y) * [(1-x) * p0+x*p1]+y*
[(1-x)*p3+x*p2]。
Sub-step S202, according to transformational relation of each mapping point in space coordinate and texture coordinate, four side of generation grid
Conversion equation between the space coordinate and texture coordinate of shape.
In the present embodiment, the computing device 10 can pass through A=p0-p, B=p1-p0, C=p3-p0, D=p2+p0-
P1-p3 peer-to-peer p=(1-y) * [(1-x) * p0+x*p1]+y* [(1-x) * p3+x*p2] is converted, obtain equation (0,0)=
A+x*B+y*C+x*y*D.The computing device 10 passes through the function equity with F ((x1, y1), (x2, y2))=x1*y2-x2*y1
The both ends of formula (0,0)=A+x*B+y*C+x*y*D disappear after C computings and the B computings that disappear, so as to obtain above-mentioned conversion equation.
In embodiments of the present invention, after the step S230, the method can also include：
Step S240, according to each vertex in each grid quadrangle and the corresponding texture coordinate of each distributed point, by road texture
The corresponding texel of each texture coordinate is mapped to corresponding position on the road model in textures.
In the present embodiment, the computing device 10 each distributed point in each grid quadrangle is obtained is corresponding to road line
After managing the texture coordinate in textures, by based on obtained each texture coordinate by the corresponding line of each texture coordinate in road texture mapping
Element is mapped to corresponding position on the road model, so as to generate complete road in current game scene.
Fig. 6 is refer to, is the texture coordinate computing device 100 shown in Fig. 1 of preferred embodiments of the present invention offer
A kind of block diagram.In embodiments of the present invention, the texture coordinate computing device 100 includes space coordinate acquisition module
110th, conversion coefficient computing module 120 and texture coordinate computing module 130.
The space coordinate acquisition module 110, for obtaining the corresponding each grid four of road model in current game scene
The space coordinate on each vertex and each distributed point in the shape of side.
In the present embodiment, the space coordinate acquisition module 110 can perform the step S210 in Fig. 2, on described
The description of space coordinate acquisition module 110 is referred to the above description to the step S210.
Alternatively, Fig. 7 is refer to, is the block diagram of the space coordinate acquisition module 110 shown in Fig. 6.In this reality
Apply in example, the space coordinate acquisition module 110 can include mesh generation submodule 111 and trigonometric ratio processing submodule 112.
The mesh generation submodule 111, for carrying out mesh generation to the road model in current game scene, obtains
Each grid quadrangle of different shapes.
In the present embodiment, the mesh generation submodule 111 carries out grid to the road model in current game scene
Division, obtaining the mode of each grid quadrangle of different shapes includes：
The road curve in the road model is sampled according to default spacing, is obtained each on the road curve
Sampled point；
Centered on each sampled point, the line between neighbouring sample point is drawn out, and length is equal to the road
The line segment of the road width of model, and four based on the adjacent segments drawn out vertex form four side of grid of correspondingly-shaped
Shape.
In the present embodiment, the mesh generation submodule 111 can perform the sub-step S211 in Fig. 3, specifically retouch
State and can refer to above to the detailed description of the sub-step S211.
The trigonometric ratio handles submodule 112, for carrying out trigonometric ratio processing to each grid quadrangle, obtains corresponding grid
The space coordinate on each vertex in quadrangle and the space coordinate of each distributed point.
In the present embodiment, the trigonometric ratio processing submodule 112 can perform the sub-step S212 in Fig. 3, specifically
Description can refer to above to the detailed description of the sub-step S212.
The conversion coefficient computing module 120, for based on the sky of each vertex and each distributed point in same grid quadrangle
Between coordinate, the conversion coefficient in conversion equation of each distributed point between space coordinate and texture coordinate is calculated.
In the present embodiment, the conversion coefficient computing module 120 can perform the step S220 in Fig. 2, specifically retouch
State and can refer to above to the detailed description of the step S220.
The texture coordinate computing module 130, for being corresponded to according to the conversion equation and each distributed point being calculated
Conversion coefficient, each distributed point corresponding texture coordinate in road texture mapping is calculated.
In the present embodiment, the texture coordinate computing module 130 can perform the step S230 in Fig. 2, specifically retouch
State and can refer to above to the detailed description of the step S230.
Fig. 8 is refer to, is the texture coordinate computing device 100 shown in Fig. 1 of preferred embodiments of the present invention offer
Another block diagram.In embodiments of the present invention, the texture coordinate computing device 100 can also match somebody with somebody including conversion equation
Put module 140 and textures mapping block 150.
The conversion equation configuration module 140, for the conversion equation between space coordinate and texture coordinate into configuration.
In the present embodiment, the conversion equation configuration module 140 is to conversion between space coordinate and texture coordinate etc.
The mode of formula into configuration includes：
According to the positional information of mapping point of the distributed point on four edges in grid quadrangle, and correspondence mappings point is in road
Texture coordinate in texture mapping, establishes transformational relation of each mapping point in space coordinate and texture coordinate；
According to transformational relation of each mapping point in space coordinate and texture coordinate, the space coordinate of generation grid quadrangle
Conversion equation between texture coordinate.
The textures mapping block 150, for according to each vertex in each grid quadrangle and the corresponding texture of each distributed point
Coordinate, corresponding position on the road model is mapped to by the corresponding texel of each texture coordinate in road texture mapping.
In the present embodiment, the textures mapping block 150 can perform the step S240 in Fig. 4, and specific description can
With reference to the above description to the step S240.
In conclusion in the texture coordinate computational methods and device that preferred embodiments of the present invention provide, the texture
Coordinate calculation method computational accuracy is high, and the texture that can accurately calculate difference in the grid quadrangle of any shape is sat
Mark, reduces mapping fault rate, improves player's sensory experience.First, the method obtains road model pair in current game scene
The space coordinate on each vertex and each distributed point in each grid quadrangle answered；Then, the method is based on same four side of grid
The space coordinate of each vertex and each distributed point in shape, in conversion equation of each distributed point between space coordinate and texture coordinate
Conversion coefficient calculated；Finally, the method is according to the conversion equation and corresponding turn of each distributed point being calculated
Coefficient is changed, each distributed point corresponding texture coordinate in road texture mapping is calculated, so as to accurately calculate arbitrary shape
The texture coordinate of each point in the grid quadrangle of shape, reduces the mapping fault rate of texture mapping, improves player's sensory experience.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
- A kind of 1. texture coordinate computational methods, it is characterised in that the described method includes：The space for obtaining each vertex in current game scene in the corresponding each grid quadrangle of road model and each distributed point is sat Mark；Based on the space coordinate of each vertex and each distributed point in same grid quadrangle, to each distributed point in space coordinate and texture The conversion coefficient in conversion equation between coordinate is calculated；According to the conversion equation and the corresponding conversion coefficient of each distributed point being calculated, each distributed point is calculated in road Corresponding texture coordinate in texture mapping.
- 2. according to the method described in claim 1, it is characterized in that, road model is corresponding in the acquisition current game scene The step of space coordinate on each vertex and each distributed point in each grid quadrangle, includes：Mesh generation is carried out to the road model in current game scene, obtains each grid quadrangle of different shapes；Trigonometric ratio processing is carried out to each grid quadrangle, obtain each vertex in corresponding grid quadrangle space coordinate and each point The space coordinate layouted.
- 3. according to the method described in claim 2, it is characterized in that, the road model in current game scene carries out net Lattice divide, and the step of obtaining each grid quadrangle of different shapes includes：The road curve in the road model is sampled according to default spacing, obtains each sampling on the road curve Point；Centered on each sampled point, the line between neighbouring sample point is drawn out, and length is equal to the road model Road width line segment, and four based on the adjacent segments drawn out vertex form the grid quadrangle of correspondingly-shaped.
- 4. according to the method described in claim 1, it is characterized in that, road model corresponds in the acquisition current game scene Each grid quadrangle in each vertex and each distributed point space coordinate the step of before, the method further includes：To the conversion equation between space coordinate and texture coordinate into configuration；Wherein, the step of conversion equation between space coordinate and texture coordinate configures includes：According to the positional information of mapping point of the distributed point on four edges in grid quadrangle, and correspondence mappings point is in road texture Texture coordinate on textures, establishes transformational relation of each mapping point in space coordinate and texture coordinate；According to transformational relation of each mapping point in space coordinate and texture coordinate, the space coordinate and line of generation grid quadrangle Manage the conversion equation between coordinate.
- 5. according to the method described in any one in claim 1-4, it is characterised in that it is described according to it is described conversion equation and The corresponding conversion coefficient of each distributed point being calculated, is calculated each distributed point corresponding texture in road texture mapping and sits After target step, the method further includes：According to each vertex in each grid quadrangle and the corresponding texture coordinate of each distributed point, each texture in road texture mapping is sat Mark corresponding texel and be mapped to corresponding position on the road model.
- 6. a kind of texture coordinate computing device, it is characterised in that described device includes：Space coordinate acquisition module, for obtaining each top in the corresponding each grid quadrangle of road model in current game scene The space coordinate of point and each distributed point；Conversion coefficient computing module, for based on the space coordinate of each vertex and each distributed point in same grid quadrangle, to each Conversion coefficient in conversion equation of the distributed point between space coordinate and texture coordinate is calculated；Texture coordinate computing module, for according to the conversion equation and the corresponding conversion coefficient of each distributed point that is calculated, Each distributed point corresponding texture coordinate in road texture mapping is calculated.
- 7. device according to claim 6, it is characterised in that the space coordinate acquisition module includes：Mesh generation submodule, for carrying out mesh generation to the road model in current game scene, obtains of different shapes Each grid quadrangle；Trigonometric ratio handles submodule, for carrying out trigonometric ratio processing to each grid quadrangle, obtains in corresponding grid quadrangle The space coordinate of the space coordinate on each vertex and each distributed point.
- 8. device according to claim 7, it is characterised in that the mesh generation submodule is in current game scene Road model carries out mesh generation, and obtaining the mode of each grid quadrangle of different shapes includes：The road curve in the road model is sampled according to default spacing, obtains each sampling on the road curve Point；Centered on each sampled point, the line between neighbouring sample point is drawn out, and length is equal to the road model Road width line segment, and four based on the adjacent segments drawn out vertex form the grid quadrangle of correspondingly-shaped.
- 9. device according to claim 6, it is characterised in that described device further includes：Change equation configuration module, for the conversion equation between space coordinate and texture coordinate into configuration；Wherein, mode bag of the conversion equation configuration module to the conversion equation between space coordinate and texture coordinate into configuration Include：According to the positional information of mapping point of the distributed point on four edges in grid quadrangle, and correspondence mappings point is in road texture Texture coordinate on textures, establishes transformational relation of each mapping point in space coordinate and texture coordinate；According to transformational relation of each mapping point in space coordinate and texture coordinate, the space coordinate and line of generation grid quadrangle Manage the conversion equation between coordinate.
- 10. according to the device described in any one in claim 6-9, it is characterised in that described device further includes：Textures mapping block, for according to each vertex in each grid quadrangle and the corresponding texture coordinate of each distributed point, by road The corresponding texel of each texture coordinate is mapped to corresponding position on the road model in texture mapping.
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