CN107610197A - A kind of texture merging method and system - Google Patents
A kind of texture merging method and system Download PDFInfo
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- CN107610197A CN107610197A CN201710841389.6A CN201710841389A CN107610197A CN 107610197 A CN107610197 A CN 107610197A CN 201710841389 A CN201710841389 A CN 201710841389A CN 107610197 A CN107610197 A CN 107610197A
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Abstract
The invention discloses a kind of texture merging method and system, wherein this method includes：Obtain the small texture that quantity to be combined is N；The area sum of N number of small texture is calculated, the area sum based on small texture calculates the starting length of side value of the large texture after small texture merges, and starting length of side value is the area for making large texture equal to or more than the minimum value of the area sum of small texture；The width value and height value of N number of small texture are traveled through, the maximum value of numerical value is selected in width value and height value as maximum；Judge to originate whether length of side value is more than or equal to maximum, if so, final long value of the length of side value as large texture will be then originated, if it is not, the then final long value using maximum as large texture, for small texture is incorporated into the large texture that the length of side is final long value.A kind of texture merging method provided by the invention solves the technical problem for the situation for how reducing the large texture wasting of resources.
Description
Technical field
The present invention relates to geospatial information system technical field, more specifically to a kind of texture merging method and
System.
Background technology
Using texture carry out scene rendering when, in order to improve the rendering efficiency of scene rendering, generally require to it is small, zero
Scattered small texture is merged into large texture.
In a kind of existing texture merging method, large texture after merging is shaped as square, the large texture length of side it is silent
It is 1024 to recognize value, and extraneous personnel can be according to the length of side for being actually needed change large texture.
However, a kind of existing texture merging method, it sometimes appear that the side of the large texture of the random setting of extraneous personnel
Length is excessive, causes the excessive situation of the size of large texture, causes the situation of the large texture wasting of resources.
In summary, how reducing the situation of the large texture wasting of resources, to be that current those skilled in the art are urgently to be resolved hurrily ask
Topic.
The content of the invention
It is an object of the invention to provide a kind of texture merging method, and it can solve how to reduce large texture to a certain extent
The technical problem of the situation of the wasting of resources.Present invention also offers a kind of texture combination system.
To achieve these goals, the present invention provides following technical scheme：
A kind of texture merging method, including：
Obtain the small texture that quantity to be combined is N；
The area sum of N number of small texture is calculated, the area sum based on the small texture calculates the small texture and closed
The starting length of side value of large texture after and, the starting length of side value is that the area for making the large texture is equal to or more than the small line
The minimum value of the area sum of reason；
The width value and height value of N number of small texture are traveled through, numerical value is selected in the width value and the height value
Maximum value is as maximum；
Judge whether the starting length of side value is more than or equal to the maximum, if so, then making the starting length of side value
For the final long value of the large texture, if it is not, the then final long value using the maximum as the large texture, for will
The small texture is incorporated into the large texture that the length of side is the final long value.
Preferably, the area sum based on the small texture calculates the starting of the large texture after the small texture merges
Length of side value, including：
The starting length of side value of the large texture after the small texture merges is calculated according to the following formula：
Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；
Wherein, pow functions are power function, and sunsize is the area sum of the small texture, and Tsize1 is the small texture
The starting length of side value of large texture after merging, i are the size of power corresponding to the starting length of side value, i=0 during initialization.
Preferably, judge whether the starting length of side value is more than or equal to the maximum to determine the large texture most
End edge long value, including：
The final long value of the large texture is determined according to the following formula：
Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；
Wherein size is the maximum, and Tsize is the final long value of the large texture, n=0 during initialization.
Preferably, after the final long value for determining the large texture, in addition to：
Judge whether the final long value of the large texture is more than threshold value set in advance, if so, then adjusting the big line
The final long value of reason is the threshold value set in advance, if it is not, not adjusting then.
Present invention also offers a kind of texture combination system, including：
Acquisition module, for obtaining the small texture that quantity to be combined is N；
Computing module, for calculating the area sum of N number of small texture, the area sum based on the small texture calculates
The small texture merge after large texture starting length of side value, the starting length of side value be make the area of the large texture be equal to or
More than the minimum value of the area sum of the small texture；
Spider module, for traveling through the width value and height value of N number of small texture, in the width value and the height
The maximum value of numerical value is selected in value as maximum；
Judge module, for judging whether the starting length of side value is more than or equal to the maximum, if so, then by described in
Final long value of the length of side value as the large texture is originated, if it is not, then using the maximum as the final of the large texture
Length of side value, for the small texture is incorporated into the large texture that the length of side is the final long value.
Preferably, the computing module includes：
Computing unit, for calculating the starting length of side value of the large texture after the small texture merges according to the following formula：
Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；
Wherein, pow functions are power function, and sunsize is the area sum of the small texture, and Tsize1 is the small texture
The starting length of side value of large texture after merging, i are the size of power corresponding to the starting length of side value, i=0 during initialization.
Preferably, the judge module includes：
Judging unit, for determining the final long value of the large texture according to the following formula：
Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；
Wherein size is the maximum, and Tsize is the final long value of the large texture, n=0 during initialization.
Preferably, in addition to：
Adjusting module, after the final long value for determining the large texture in the judge module, judge the big line
Whether the final long value of reason is more than threshold value set in advance, if so, the final long value for then adjusting the large texture is described
Threshold value set in advance, if it is not, not adjusting then.
A kind of texture merging method provided by the invention, including：Obtain the small texture that quantity to be combined is N；Calculate N number of
The area sum of small texture, the area sum based on small texture calculate the starting length of side value of the large texture after small texture merges, risen
Initial line long value is the area for making large texture equal to or more than the minimum value of the area sum of small texture；Travel through the width of N number of small texture
Angle value and height value, the maximum value of numerical value is selected in width value and height value as maximum；Judge whether originate length of side value
More than or equal to maximum, if so, final long value of the length of side value as large texture will be then originated, if it is not, then making maximum
For the final long value of large texture, for small texture is incorporated into the large texture that the length of side is final long value.The present invention provides
A kind of texture merging method, the area sum based on the small texture that quantity to be combined is N calculates the large texture after merging
Originate length of side value；The width value and height value of all small textures are traveled through again, select the maximum value of numerical value as maximum；Then sentence
Whether the starting length of side value of the disconnected large texture being calculated is more than or equal to maximum, is closed if so, being then used as starting length of side value
The final long value of large texture after and, if it is not, the then final long value using maximum as the large texture after merging.The present invention
A kind of area sum of the texture merging method provided based on small texture calculates the starting length of side value of large texture, and starting length of side value is
Make the area of large texture equal to or more than the minimum value of the area sum of small texture, so that the area of large texture is in theory
Closest to the area sum of small texture, then judge that the size of starting length of side value and maximum determines the final length of side of large texture
Value so that large texture can include all small textures, with the random length of side for setting large texture of extraneous personnel in the prior art
Compare, the length of side value for the large texture being calculated more conforms to the length of side value for the large texture that small texture is actually needed, so as to reduce
The situation of the large texture wasting of resources.In summary, a kind of texture merging method provided by the invention solves to a certain extent
How the technical problem of the situation of the large texture wasting of resources is reduced.A kind of texture combination system provided by the invention also solves
Corresponding technical problem.
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 embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of texture merging method provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of texture combination system provided in an embodiment of the present invention.
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 clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is a kind of flow chart of texture merging method provided in an embodiment of the present invention.
A kind of texture merging method provided in an embodiment of the present invention may comprise steps of：
Step S101：Obtain the small texture that quantity to be combined is N.
In practical application, the small texture that quantity to be combined is N can be first obtained, N here can be according to actual need
The positive integer to be determined.The small texture that the quantity of acquisition is N can be put into texture set in advance to concentrate, it is so convenient to small
The management of texture.
Step S102：The area sum of N number of small texture is calculated, after the area sum based on small texture calculates small texture merging
Large texture starting length of side value, starting length of side value be make large texture area be equal to or more than small texture area sum most
Small value.
After small texture is got, to calculate the area sum of N number of small texture, can be then based on small texture area it
With the starting length of side value for calculating the large texture after small texture merges, starting length of side value is the area for making large texture equal to or more than small
The minimum value of the area sum of texture.Because small texture will be merged into large texture, thus the area of large texture have to be larger than or
Equal to the area of small texture, and large texture is usually square, so the length of side value for calculating large texture can be according to the length of side value
Determine the area of large texture.Here the starting length of side value that the area sum based on small texture calculates large texture is in order in theory
The area of large texture is allowed to be more than or equal to the area sum of small texture, and last starting length of side value causes the area of large texture most
Close to the area sum of small texture.
Step S103：The width value and height value of N number of small texture are traveled through, numerical value maximum is selected in width value and height value
Value as maximum.
After the width value and height value of small texture is traveled through, it can be picked out in the width value and height value that traversal obtains
The maximum value of numerical value is as maximum.
Step S104：Judge to originate whether length of side value is more than or equal to maximum, if so, being then used as starting length of side value greatly
The final long value of texture, if it is not, the then final long value using maximum as large texture, for small texture is incorporated into the length of side
In large texture for final long value.
In practical application, it is possible that causing the small texture to be merged into big line because small texture is wide or too high
Situation in reason, so needing exist for judging to originate whether length of side value is more than or equal to maximum；If starting length of side value is more than
Or equal to maximum, this needs that final long value of the length of side value as large texture will be originated；If originating length of side value is less than maximum
Value, at this moment needs the final long value using maximum as large texture, can so cause the area of large texture finally determined
More than or equal to the area sum of small texture, and large texture can include each small texture, be not in that small texture exceeds
The situation of large texture., can be so that small texture be merged into the length of side as final long value it is determined that after the final long value of large texture
Large texture in, merging process can be as follows：Small texture sorted according to rule set in advance, then by the small texture after sequence
It is merged into large texture.Rule set in advance can be by quantity be N small texture according to each small texture maximum by
High to Low order sequence, the maximum of each small texture mentioned here refer in the width value and height value of the small texture
Maximum, due to being sorted to small texture according to certain rule, the logic of small texture is added, so as to convenient
Small texture is merged into large texture.
A kind of texture merging method provided by the invention, including：Obtain the small texture that quantity to be combined is N；Calculate N number of
The area sum of small texture, the area sum based on small texture calculate the starting length of side value of the large texture after small texture merges, risen
Initial line long value is the area for making large texture equal to or more than the minimum value of the area sum of small texture；Travel through the width of N number of small texture
Angle value and height value, the maximum value of numerical value is selected in width value and height value as maximum；Judge whether originate length of side value
More than or equal to maximum, if so, final long value of the length of side value as large texture will be then originated, if it is not, then making maximum
For the final long value of large texture, for small texture is incorporated into the large texture that the length of side is final long value.The present invention provides
A kind of texture merging method, the area sum based on the small texture that quantity to be combined is N calculates the large texture after merging
Originate length of side value；The width value and height value of all small textures are traveled through again, select the maximum value of numerical value as maximum；Then sentence
Whether the starting length of side value of the disconnected large texture being calculated is more than or equal to maximum, is closed if so, being then used as starting length of side value
The final long value of large texture after and, if it is not, the then final long value using maximum as the large texture after merging.The present invention
A kind of area sum of the texture merging method provided based on small texture calculates the starting length of side value of large texture, and starting length of side value is
Make the area of large texture equal to or more than the minimum value of the area sum of small texture, so that the area of large texture is in theory
Closest to the area sum of small texture, then judge that the size of starting length of side value and maximum determines the final length of side of large texture
Value so that large texture can include all small textures, compared with extraneous personnel change the length of side of large texture in the prior art, calculate
The length of side value of obtained large texture more conforms to the length of side value for the large texture that small texture is actually needed, so as to reduce large texture money
The situation that source wastes.In summary, how a kind of texture merging method provided by the invention to a certain extent is reduced if solving
The technical problem of the situation of the large texture wasting of resources.
In a kind of texture merging method provided in an embodiment of the present invention, the area sum based on small texture calculates small texture and closed
The starting length of side value of large texture after and, can include：
The starting length of side value of the large texture after small texture merges is calculated according to the following formula：
Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；
Wherein, pow functions are power function, and sunsize is the area sum of small texture, and Tsize1 is after small texture merges
The starting length of side value of large texture, i are the size of power corresponding to starting length of side value.I=0 during initialization.
In practical application, formula pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=can be passed through
Pow (2, i) calculates the starting length of side value of the large texture after small texture merges, so that the process for calculating starting length of side value is simple
Easily realize.Wherein, pow functions are power function；4 be pow functions the truth of a matter because the width value and height value of texture be usually with
2 be the values of powers of the truth of a matter, and the area of texture is the product of width value and height value, so calculating an initial line for large texture here
The truth of a matter of power function is arranged to 4 during long value；Sunsize is the area sum of small texture；Tsize1 is after small texture merges
The starting length of side value of large texture；I is the power of pow functions, i initial value typically is set into 0, and i is usually positive integer.Certainly also
There are other methods for calculating starting length of side value, the present invention is not specifically limited herein.
In a kind of texture merging method provided in an embodiment of the present invention, judge to originate whether length of side value is more than or equal to maximum
Value determines the final long value of large texture, can include：
The final long value of large texture is determined according to the following formula：
Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；
Wherein size is maximum, and Tsize is the final long value of large texture, n=0 during initialization.
In practical application, formula size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize can be passed through
=pow (2, (i+n)) determines the final long value of large texture, and wherein size is maximum, Tsize is the final of large texture
Long value, n=0 during initialization, i are power corresponding to the starting length of side value of large texture.Because n is typically greater than or the integer equal to 0,
So the value of (i+n) is more than or equal to i, i.e. Tsize >=size, so the final long value of the large texture finally determined must be
More than or equal to starting length of side value, and necessarily it is greater than or equal to maximum.It can so to determine the final of large texture
The process of length of side value is easy easily to be realized.
In practical application, such as in the final long value of the large texture after the small texture for calculating 4 256*256 merges,
At this moment, sunsize=256*256*4, size=256, the calculating process for being substituted into above-mentioned formula are as follows：
I=9 is calculated by formula pow (4, i-1)≤256*256*4, pow (4, i) >=256*256*4；By i=9
256≤pow of formula (2, (i+n)) is substituted into, i+n=9 is calculated in 256 >=pow (2, (i+n-1)), now n=0；Finally draw
The final long value of large texture be Tsize=pow (2,9)=512.The final long value for the large texture being calculated causes greatly
The area of texture is just the area sum of small texture, without the wasting of resources, and is not in that the part of small texture exceeds
The situation of large texture.
In a kind of texture merging method provided in an embodiment of the present invention, after the final long value for determining large texture, may be used also
With including：
Judge whether the final long value of large texture is more than threshold value set in advance, if so, then adjusting the final of large texture
Length of side value is threshold value set in advance, if it is not, not adjusting then.
In practical application, the length of side of large texture is unlikely to be infinity, it is possible to it is determined that the final of large texture
After long value, judge whether the final long value of large texture is more than threshold value set in advance, threshold value set in advance mentioned here
Namely the maximum side length that large texture can reach, if so, the final long value for then adjusting large texture is threshold value set in advance,
At this moment, the large texture that multiple length of sides are threshold value set in advance can be created to be used for merging small texture；If it is not, then can be without
Operation, can be that to be merged into a length of side be in the large texture of final long value for N small texture by quantity at this moment.
Present invention also offers a kind of texture combination system, and it has a kind of texture merging side provided in an embodiment of the present invention
The corresponding effect that method has.Referring to Fig. 2, Fig. 2 is a kind of structural representation of texture combination system provided in an embodiment of the present invention
Figure.
A kind of texture combination system provided in an embodiment of the present invention can include：
Acquisition module A1, for obtaining the small texture that quantity to be combined is N；
Computing module A2, for calculating the area sum of N number of small texture, the area sum based on small texture calculates small texture
The starting length of side value of large texture after merging, starting length of side value be make large texture area be equal to or more than small texture area it
The minimum value of sum；
Spider module A3, for traveling through the width value and height value of N number of small texture, number is found out in width value and height value
It is worth maximum value as maximum；
Judge module A4, for judging to originate whether length of side value is more than or equal to maximum, if so, will then originate length of side value
As the final long value of large texture, if it is not, the then final long value using maximum as large texture, for small texture is merged
To the length of side in the large texture of final long value.
In a kind of texture combination system provided in an embodiment of the present invention, computing module can include：
Computing unit, for calculating the starting length of side value of the large texture after merging according to the following formula：
Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；
Wherein, pow functions are power function, and sunsize is the area sum of small texture, and Tsize1 is after small texture merges
The starting length of side value of large texture, i are the size of power corresponding to starting length of side value, i=0 during initialization.
In a kind of texture combination system provided in an embodiment of the present invention, judge module can include：
Judging unit, for determining the final long value of large texture according to the following formula：
Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；
Wherein size is maximum, and Tsize is the final long value of large texture, n=0 during initialization.
In a kind of texture combination system provided in an embodiment of the present invention, it can also include：
Adjusting module, after the final long value for determining large texture in judge module, judge the final length of side of large texture
Whether value is more than threshold value set in advance, if so, the final long value for then adjusting large texture is threshold value set in advance, if it is not,
Do not adjust then.
The explanation of relevant portion refers to the embodiment of the present invention in a kind of texture combination system provided in an embodiment of the present invention
The detailed description of corresponding part, will not be repeated here in a kind of texture merging method provided.In addition, the embodiment of the present invention provides
Above-mentioned technical proposal in the part consistent with corresponding to technical scheme realization principle in the prior art and unspecified, in order to avoid mistake
Repeat more.
The foregoing description of the disclosed embodiments, those skilled in the art are enable to realize or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
The embodiments shown herein is formed on, and is to fit to consistent with principles disclosed herein and features of novelty most wide
Scope.
Claims (8)
- A kind of 1. texture merging method, it is characterised in that including：Obtain the small texture that quantity to be combined is N；The area sum of N number of small texture is calculated, after the area sum based on the small texture calculates the small texture merging Large texture starting length of side value, it is described starting length of side value be that the area for making the large texture is equal to or more than the small texture The minimum value of area sum；The width value and height value of N number of small texture are traveled through, numerical value maximum is selected in the width value and the height value Value as maximum；Judge whether the starting length of side value is more than or equal to the maximum, if so, then using the starting length of side value as institute The final long value of large texture is stated, if it is not, the then final long value using the maximum as the large texture, for by described in Small texture is incorporated into the large texture that the length of side is the final long value.
- 2. according to the method for claim 1, it is characterised in that described in the area sum based on the small texture calculates The starting length of side value of large texture after small texture merging, including：The starting length of side value of the large texture after the small texture merges is calculated according to the following formula：Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；Wherein, pow functions are power function, and sunsize is the area sum of the small texture, and Tsize1 merges for the small texture The starting length of side value of large texture afterwards, i are the size of power corresponding to the starting length of side value, i=0 during initialization.
- 3. according to the method for claim 2, it is characterised in that it is described to judge whether the starting length of side value is more than or equal to Maximum determines the final long value of the large texture, including：The final long value of the large texture is determined according to the following formula：Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；Wherein size is the maximum, and Tsize is the final long value of the large texture, n=0 during initialization.
- 4. according to the method for claim 3, it is characterised in that after the final long value for determining the large texture, also wrap Include：Judge whether the final long value of the large texture is more than threshold value set in advance, if so, then adjusting the large texture Final long value is the threshold value set in advance, if it is not, not adjusting then.
- A kind of 5. texture combination system, it is characterised in that including：Acquisition module, for obtaining the small texture that quantity to be combined is N；Computing module, for calculating the area sum of N number of small texture, described in the area sum calculating based on the small texture The starting length of side value of large texture after small texture merging, the starting length of side value is that the area for making the large texture is equal to or more than The minimum value of the area sum of the small texture；Spider module, for traveling through the width value and height value of N number of small texture, in the width value and the height value The maximum value of numerical value is selected as maximum；Judge module, for judging whether the starting length of side value is more than or equal to the maximum, if so, then by the starting Final long value of the length of side value as the large texture, if it is not, the then final length of side using the maximum as the large texture Value, for the small texture is incorporated into the large texture that the length of side is the final long value.
- 6. system according to claim 5, it is characterised in that the computing module includes：Computing unit, for calculating the starting length of side value of the large texture after the small texture merges according to the following formula：Pow (4, i-1)≤sunsize, pow (4, i) >=sunsize, Tsize1=pow (2, i)；Wherein, pow functions are power function, and sunsize is the area sum of the small texture, and Tsize1 merges for the small texture The starting length of side value of large texture afterwards, i are the size of power corresponding to the starting length of side value, i=0 during initialization.
- 7. system according to claim 6, it is characterised in that the judge module includes：Judging unit, for determining the final long value of the large texture according to the following formula：Size≤pow (2, (i+n)), size >=pow (2, (i+n-1)), Tsize=pow (2, (i+n))；Wherein size is the maximum, and Tsize is the final long value of the large texture, n=0 during initialization.
- 8. system according to claim 7, it is characterised in that also include：Adjusting module, after the final long value for determining the large texture in the judge module, judge the large texture Whether final long value is more than threshold value set in advance, if so, the final long value for then adjusting the large texture is described advance The threshold value of setting, if it is not, not adjusting then.
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