CN107402928A - A kind of document rendering intent - Google Patents
A kind of document rendering intent Download PDFInfo
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- CN107402928A CN107402928A CN201610338647.4A CN201610338647A CN107402928A CN 107402928 A CN107402928 A CN 107402928A CN 201610338647 A CN201610338647 A CN 201610338647A CN 107402928 A CN107402928 A CN 107402928A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
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Abstract
The present invention relates to a kind of document rendering intent, including：Obtain cad file；Cad file is divided into multiple vector files according to picture；Each vector file is rendered into the bitmap of fixed dimension, and the index to all bitmaps is established according to the position relationship between corresponding vector file；Client file extent to display is obtained, and according to the index to all bitmaps of foundation, transfers corresponding bitmap and is sent to client progress tiled display.Compared with prior art, client of the present invention is shown by pictorial manner to cad file, when simply checking or mark, can meet to require, while can greatly improve display accelerating velocity of the cad file in Web or APP for document at some.
Description
Technical field
The present invention relates to a kind of web Renderings, more particularly, to a kind of document rendering intent.
Background technology
With the development of Internet technology, cloud storage and cloud computing are applied more and more widely year by year, and document is deposited
High in the clouds is stored up, carries out some team collaborations of Multipoint synchronous, because traditional client has the defects of clumsy, some are right
Simple in document checks or marked, and Web has the advantages of cross-platform in addition, and designer or clerical workforce are past
Toward being more prone to conduct interviews by Web modes and preview.
For some simple documents, such as text document and word document, realizing for online preview is more convenient,
But for some documents such as cad file, because size is larger, geometric element is very more, current
If uneasiness plugs part in Web browser Rendering, it is difficult to carry out rendering for efficient quick.And plug-in unit is installed
It is difficult compatible a variety of browsers again.Therefore the online browse technology of current cad file is all more poorly efficient.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of document side of rendering
Method.
The purpose of the present invention can be achieved through the following technical solutions：
In certain embodiments：A kind of document rendering intent, including：Obtain cad file；By cad file
Multiple vector files are divided into according to picture；Each vector file is rendered into the bitmap of fixed dimension, and according to
Position relationship between corresponding vector file establishes the index to all bitmaps；Obtain client file to display
Scope, and according to the index to all bitmaps of foundation, transfer corresponding to bitmap be sent to client to carry out splicing aobvious
Show.
In certain embodiments：A kind of document rendering intent, including：Obtain cad file；It is preloaded into client
Scaling that may be present during the cad file is shown, and is directed to each scaling, by cad file
Multiple vector files are divided into according to picture, obtain multiple vector file set；
For each vector file set：All vector files in the vector file set are rendered into fixed ruler
Very little bitmap, and the index according to the position relationship foundation between corresponding vector file to all bitmaps；Obtain client
Scaling to display and file extent are held, and according to the index to all bitmaps of foundation, is transferred corresponding
Bitmap is sent to client and carries out tiled display.
In certain embodiments：A kind of document rendering intent, including：Obtain cad file；By cad file
Multiple vector files are divided into according to picture；
Each vector file is rendered into the bitmap of fixed dimension, and closed according to the position between corresponding vector file
System establishes the index to all bitmaps；Client is according to its file extent to display, according to foundation to all
The index of bitmap, transfer corresponding bitmap from server and carry out tiled display.
In certain embodiments：A kind of document rendering intent, including：Obtain cad file；It is preloaded into client
Scaling that may be present during the cad file is shown, and is directed to each scaling, by cad file
Multiple vector files are divided into according to picture, obtain multiple vector file set；For each vector file set：
All vector files in the vector file set are rendered into the bitmap of fixed dimension, and according to corresponding vector file
Between position relationship establish to the indexes of all bitmaps；Client is according to its scaling and file to display
Scope, according to the index to all bitmaps of foundation, transfer corresponding bitmap from server and carry out tiled display.
In the above method, the size of bitmap is determined based on default display resolution.
The size of the preferable bitmap is the 1/n of default display resolution2, wherein n is positive integer, more there is choosing
, the n is 4.
Compared with prior art, the present invention has advantages below：
1) client is shown by pictorial manner to cad file, is checked at some for the simple of document
Or during mark, can meet to require, while it is aobvious in Web or APP to greatly improve cad file
Show accelerating velocity.
2) most calculating and render any plug-in unit need not be installed in server-side processes, client.
3) cad file is first divided into multiple vector files according to picture, then carries out subsequent treatment, Ke Yi great
The big size for reducing committed memory when generating bitmap, cad file can be more in the process that server end is cut
Increase effect.
4) by way of default display resolution, the cutting times brought by resolution ratio disunity can be reduced
Excessively, the problem of bitmap quantity of generation is excessive, the load of server can be significantly reduced.
5) by be designed and sized to default integer square point the one of bitmap, follow-up tiled display can be facilitated,
And n is related to 4, and one can avoid the unsharp problem of picture brought because bitmap size is excessive, and two
The data redundancy because bitmap size is too small, brought can be avoided, the problem of in turn resulting in the wasting of resources.
Brief description of the drawings
Fig. 1 is the key step schematic flow sheet of the present invention；
Fig. 2 is that cad file splits schematic diagram.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the technology of the present invention side
Implemented premised on case, give detailed embodiment and specific operating process, but the protection model of the present invention
Enclose and be not limited to following embodiments.
Embodiment 1：
Cad file in uploading onto the server can show that client can be Web by preview is carried out in client
Browser can also be APP (application program), and this application provides a kind of document rendering intent, it is possible to achieve visitor
Quick display, including step are realized for the complicated super large file as CAD in family end：
Server first obtains cad file 101；
Server is preloaded into client and shows scaling that may be present during the cad file 101, such as Fig. 2 institutes
Show, and be directed to each scaling, cad file 101 is divided into multiple vector files 102 according to picture,
Multiple vector files 102 are obtained to gather, wherein：Scaling that may be present can design certainly when client is shown
Dynamic algorithm generation, can also be from the mode of its exterior typing；
Gather for each vector file 102：All vector files 102 during the vector file 102 is gathered
The bitmap of fixed dimension is rendered into, and is established according to the position relationship between corresponding vector file 102 to all bitmaps
Index, wherein, the size of bitmap determines that the size of preferable bitmap is default based on default display resolution
Display resolution 1/n2, wherein n is positive integer, more there is choosing, n 4.By presetting display resolution
Mode, can reduce that the cutting times brought by resolution ratio disunity are excessive, the bitmap quantity of generation is excessive
Problem, the load of server can be significantly reduced；
Client sends its scaling to display and file extent to server, by server according to foundation
The index to all bitmaps, transfer corresponding to bitmap be sent to client carry out tiled display.
Idiographic flow with a specific cad file section case as shown in figure 1, be described in detail below：
S1：Cad file is obtained, sets default display resolution as 1024*1024, while design maximum support
4096*4096 sizes are shown, to meet under enough multiplication factors to the display precision of details；
S2：Scaling that may be present is calculated, scaling is represented with r, because 4096 be four times of 1024,
Therefore r minimum 0.25, while in order to reduce data redundancy, r are up to 1.0, centre can arbitrarily choose it is several,
In the present embodiment, it is 1.0,0.5,0.25 to select r；
S3：Scaling r is taken out, takes r=1.0 first；
S4：Cutting CAD is the small vector file of high a width of (16r) * (16r), wherein 16 be 4096 relative
In the multiple of bitmap size；
S5：Small vector file is rendered into 256*256 picture；For ratio r=1.0, share：
16*16=256 pieces；
S6：By r=1.0 section, from left to right numbering is from top to bottom：
R1.0_0_0.jpg, r1.0_0_1.jpg ..., r1.0_0_15.jpg,；
R1.0_1_0.jpg, r1.0_1_1.jpg ..., r1.0_1_15.jpg,；
…
R1.0_15_0.jpg, r1.0_15_1.jpg ..., r1.0_15_15.jpg,；
S3 is gone to step, establishes the index for each scaling successively.
Then client is sent to server according to its scaling to display and file extent, by server root
According to the index to all bitmaps of foundation, transfer corresponding bitmap and be sent to client progress tiled display.
Embodiment 2：
In order to avoid the present embodiment obscures, for identical thinking or step in embodiment 1, the present embodiment is not
It is described in detail again.
In the present embodiment, index is not being established for different scaled sizes, for each cad file, only built
A set of index is found, and has client to introduce row Zoom display according to the lasso trick.This mode can reduce server
Calculate and store load, but the requirement to client can be improved.
Embodiment 3：
In order to avoid the present embodiment obscures, for identical thinking or step in embodiment 1, the present embodiment is not
It is described in detail again.
Cad file is converted to one or more big bitmaps by the present embodiment according to scaling in advance, such as
4096*4096 to 1024*1024 bitmap,
But major bitmap is cut again and establishes index.
Although process is simple by the way of in the present embodiment, clothes can very be expended by being converted into the process of big bitmap
The resource of business device, can cause to take substantial amounts of internal memory.
Claims (7)
1. a kind of document rendering intent, it is characterised in that including step：
Obtain cad file；
Cad file is divided into multiple vector files according to picture；
Each vector file is rendered into the bitmap of fixed dimension, and closed according to the position between corresponding vector file
System establishes the index to all bitmaps；
Client file extent to display is obtained, and according to the index to all bitmaps of foundation, is transferred correspondingly
Bitmap be sent to client carry out tiled display.
2. a kind of document rendering intent, it is characterised in that including step：
Obtain cad file；
It is preloaded into client and shows scaling that may be present during the cad file, and is directed to each pantograph ratio
Example, is divided into multiple vector files according to picture by cad file, obtains multiple vector file set；
For each vector file set：All vector files in the vector file set are rendered into fixed ruler
Very little bitmap, and the index according to the position relationship foundation between corresponding vector file to all bitmaps；
Client scaling to display and file extent are obtained, and according to the rope to all bitmaps of foundation
Draw, transfer corresponding bitmap and be sent to client progress tiled display.
3. a kind of document rendering intent, it is characterised in that including step：
Obtain cad file；
Cad file is divided into multiple vector files according to picture；
Each vector file is rendered into the bitmap of fixed dimension, and closed according to the position between corresponding vector file
System establishes the index to all bitmaps；
Client is according to its file extent to display, according to the index to all bitmaps of foundation, from server
Bitmap carries out tiled display corresponding to transferring.
4. a kind of document rendering intent, it is characterised in that including step：
Obtain cad file；
It is preloaded into client and shows scaling that may be present during the cad file, and is directed to each pantograph ratio
Example, is divided into multiple vector files according to picture by cad file, obtains multiple vector file set；
For each vector file set：All vector files in the vector file set are rendered into fixed ruler
Very little bitmap, and the index according to the position relationship foundation between corresponding vector file to all bitmaps；
Client is according to its scaling to display and file extent, according to the rope to all bitmaps of foundation
Draw, transferring corresponding bitmap from server carries out tiled display.
5. according to any described a kind of document rendering intent in claim 1-4, it is characterised in that institute's rheme
The size of figure is determined based on default display resolution.
A kind of 6. document rendering intent according to claim 5, it is characterised in that the size of the bitmap
For the 1/n of default display resolution2, wherein n is positive integer.
7. a kind of document rendering intent according to claim 5, it is characterised in that the n is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338647.4A CN107402928A (en) | 2016-05-20 | 2016-05-20 | A kind of document rendering intent |
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| CN201610338647.4A CN107402928A (en) | 2016-05-20 | 2016-05-20 | A kind of document rendering intent |
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| WO2020093193A1 (en) * | 2018-11-05 | 2020-05-14 | Commscope, Inc. Of North Carolina | Systems and methods for on-demand display of vector graphic images using raster graphics |
| WO2020224388A1 (en) * | 2019-05-06 | 2020-11-12 | 腾讯科技（深圳）有限公司 | Element rendering method and apparatus, computer readable storage medium, and computer device |
| EP3514709B1 (en) * | 2018-01-22 | 2023-06-07 | Joachim Becker | Method and apparatus for transmitting and displaying user vector graphics with info items from a cloud-based cad archive on mobile devices, mobile or stationary computers |
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Application publication date: 20171128 |