Thursday, July 29, 2010

The Stone Flower Fireworks mixed results (2)



The previous section, we have learned through the layer of mixed-mode adjustments resulting dazzling effect, this section we will continue the use of mixed-mode dig! Let's first look at the mixed layer produced by adjusting the effect of drawings and effect diagram is also called the gem name for the time being it took effect, huh, huh, because really I can not think of a more appropriate name, no matter how we look together effect diagram to see this example method of making it!



1銆佹墦寮?WMX锛屾柊寤烘枃浠讹紝澶у皬200*200锛岃儗鏅壊閲囩敤鐨勯粦鑹层?

2, select the oval drawing tool kit, with the Shift key, draw a circle in the editing area, select the circular object on the Properties (attributes) associated panel settings: Stroke (Stroke) option set to None; Fill (filling) mode choice Radial (radiation gradient) fill; Edge (Edge) Select Feather (Feather), the value of the size of the emergence of 10 can use the default.

3, followed by adjustment of the fill color, click the Fill color well, the color settings box will pop up, left the default white color block, the right color block set to "# 003 366." In the color bar from the left side of the color blocks about 1 / 3, click the mouse, automatically add a fill color blocks, to keep the blocks of color without any changes, see the following diagram the specific operation:



4, in the right color from the color block out about 1 / 3, click the mouse to add a fill color blocks, the fill color blocks to adjust the color to become white, as shown below:



5, well, back to the editor, we see a circular object filling effect should be as shown below:



6 Next, we want to round the object to adjust the fill color. Click the circular object will show a color adjustment handle, filled with a click of the mouse in the round handle, move to the circular object below, then select the rectangle fill handle, rotate counterclockwise, and lengthening the two adjustment points distance, the final adjustment effect as shown below:
(Note: the regulation of the two regulating handle you can use other ways, you'll get different results with this case, and you can read this section, self-test, not to go into details here.)



7, select the rectangle object, the implementation of the menu command "Edit / Clone (editing / cloning)," shortcut is "Ctrl + Shift + D", then the implementation of the menu command "Modify / Transform / Numeric Transform (modified / deformation / value deformation), "shortcut is" Ctrl + Shift + T ", the pop-up dialog box, select the deformation for the" Rotate (spin) ", rotation angle of 90 degrees, click the OK button.
Note: The above rotating operation of deformation can also use the menu command "Modify / Transform / Rotate 90 掳 CW (modification / deformation / rotate 90 degrees clockwise)" to achieve.

8, open the Layers level panel, select the layer where the object is cloned, the mixed-mode adjusted to Lighter (highlight) mode, the specific settings as shown below:



9, open the History panel of history, while the three-step operation has just selected "Clone, Trsnform, Blend Mode", then click in the panel bottom left corner of the "Replay" button, as shown below:






[Next]



10, continuous click "Replay" button three times to return to Layers level board we will find that there have been three cloned object, see the specific results shown below:



11, well, back to the editor to see before us now is to show how an effective plan, see figure below:



12, you do not worry as cases shown in order to get results, then we need to do some work ha ~ ~

13, implementation of the shortcut key "Ctrl + A", also select all objects in the editor, then run the shortcut key "Ctrl + G", will be combined into groups of four objects.鎺ョ潃瑕佸皢璇ョ粍鍚堝璞¤浆鍖栦负浣嶅浘锛屾墽琛屽揩鎹烽敭鈥淐trl+Shift+Alt+Z鈥濓紝鍗冲彲瀹炵幇浣嶅浘鐨勮浆鎹?

Note: here, there may be some friends will ask, why should necessarily translate into a bitmap? Here to make a simple explanation:

We must be clear what our next action, we must object to the combination of Brightness / Contrast (brightness / contrast) adjustments. Select the combination of the object, and then select Properties panel of the "Effects / Adjust Color / Brightness / Contrast" effect of an order will pop up Brightness / Contrast adjustment dialog box, as shown below:



The moment we discovered that the object of the editor changes, and should have been combined effect of the design for the gemstone flowers gone, but merely shows in the top of the graphic object, as shown below:



杩欏綋鐒舵槸鎴戜滑鎵?笉甯屾湜鐨勪簡锛屽洜涓烘垜浠璋冩暣鐨勬槸鏁翠釜缁勫悎瀵硅薄锛岃?涓嶅崟鍗曟槸鏌愪竴灞傜殑瀵硅薄锛屼负浜嗛伩鍏嶅嚭鐜颁笂闈㈢殑鎯呭喌锛屾墍浠ユ垜浠皢缁勫悎瀵硅薄杞寲涓轰簡浣嶅浘銆?br />
14銆侀?涓綅鍥惧璞★紝鎵ц涓婇潰鍒氬垰鎻愬埌鐨凟ffects鏁堟灉鍛戒护锛屽湪寮瑰嚭鐨凚rightness/Contrast瀵硅瘽妗嗕腑锛屽垎鍒浜害鍊煎拰瀵规瘮搴︾殑鍊艰繘琛岃皟鏁村涓嬶細



15, adjusted the object editor as shown below:



16銆佹墽琛屽揩鎹烽敭鈥淐trl+Shift+D鈥濓紝鍏嬮殕涓?釜鏂扮殑浣嶅浘瀵硅薄锛屾墦寮?眰闈㈡澘锛岄?瀹氬厠闅嗗璞℃墍鍦ㄧ殑鍥惧眰锛屽皢鍏舵贩鍚堟ā寮忚皟鏁翠负鈥淚nvert鈥濓紝鍏蜂綋璁剧疆濡備笅鍥炬墍绀猴細



17, well, look at what the editor appeared in the effect of map it! In fact, from my personal perspective, I feel this section of the renderings look better than the previous section should be more like a precious flower it! :) Oh ~ ~ ~



This section of the study to this end, we are still in this section through the adjustment of the mixed-mode to create a wonderful effect drawing style, but this time we add some effects of Effect, which allows us to map the final result does not appear to be more general, Some more beautiful ... ... (Hey, man, do not spit you, I is not telling the truth? ha ha ~ ~ ~ to a face good or bad ~ ~).

Finally Affirms a bit, we hope to do here, these effects should plan better ideas, because each person as long as there are interested, pick up your mouse in the FWMX give our world a few clicks at random, there may lead to patients than the chart provided here, much better the effects to, so we want to give you the solution to the problem of some new ideas and new ways, not just the dried pieces renderings. Hope you will create a more beautiful effect drawing more wonderful to share with you ~ ~ ~







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Thursday, July 15, 2010

How can I control the P2P traffic?



Currently, in order to BitTorrent (hereinafter referred to as BT) on behalf of the P2P download software for the traffic takes up a lot of bandwidth, broadband access, according to statistics more than 50%. This shared bandwidth Ethernet access and other broadband access method presents a great challenge, a large number of access layer switch port to long-term work online speed state, has seriously affected the users normal Web, E-mail and video on demand services. Therefore, operators, business users and users of education and other industries have to restrict such traffic requirements. In this paper, BT, for example, describes the control of P2P traffic in general and to download special method.

BT carried out?

BT and the traditional way to download the biggest difference is the full play to the characteristics of Internet hosts on the other, that each run the TCP / IP stack can be equal to the host (end) to receive or initiate a request, please visit. Although as NAT, firewall and other technology to the public, the whole network (Internet) end of the era has passed, but there are still many hosts still have Interenet end to end capability, in addition, even in the isolated campus network by the firewall, enterprises within the network, the hosts also have end to end environment.

The traditional way is to download the C / S model, or centralized model, that all the host files were downloaded from the server, the host is not available for download, while the server is usually available for download.

The BT download mechanism to download only the host, but also to provide download services, while the server is available for download on the host and the file directory information, as shown in Figure 2. The choice of the host content download some hash features, which often involved downloading the hosts have not yet downloaded the content of other hosts, which can provide download services to other hosts. In this mechanism, the host can be simultaneously downloaded from multiple locations, so download speeds can be increased significantly.

What role BT server?

BT's server provides unified management released, BT client needs to connect to the server to download to get involved in a host of other nodes. In fact, this limit BT traffic for us to provide a simple and feasible means.

BT's. Torrent file includes the server address, file name, directory name, file length and other information, BT client software in the analysis. Torrent file, download the request to the server, the requested URL, including its own port information , download progress and status information.

BT server uses the track program to manage the download request, De Dao 鍚?URL will look for the list to locate corresponding documents to download the hosts. Clients can download, at the same time, if the client has the ability to accept connection requests, track program will host information is also added to the list so that other hosts to find the host and to download.

As the P2P clients can specify their own are often used to provide a download / upload ports, so the traditional way of blocking the port is difficult to work.

How to control the P2P traffic?

Using QoS

Objectively speaking, P2P technology is very suitable for Internet structure, the ability to network resources to maximize the use of a mechanism, in many cases, P2P network infrastructure resources can be saved, for example, a broadband access network, if there are 100 users outside the network to download the same file, the traditional way is to go through the same flow rate of 100 times the export operator. Unless operators or distributed caching service. In BT mode, the flow through the export of a significant decrease because intranet users can download each other. And P2P applications have become a trend, it is difficult to stop blocking P2P alone development.

However, due to the superiority of the mechanism, P2P is inevitable at this stage this model will impact the traditional application, affect the normal business flow.

Therefore, a reasonable starting point is the use of QoS mechanisms to guarantee the normal operation of the business case, allowing users to use P2P application.

More difficulties in this way, the first is how to define the normal business flow, how to plan the bandwidth.

This stage, voice, video traffic, corporate users of e-commerce transactions flows, as well as broadband access users of Web traffic, E-mail and instant messaging traffic flow can be included in the normal course of business, is divided into different priority. Since then, operators can use the user and application development, modification and optimization of QoS configuration.

For this approach, from the traffic analysis point of view, the existing MRTG and other SNMP-based traffic detection methods have been difficult to meet the requirements. To this end, poly Health Science and Technology developed the real-time bandwidth control technology, which directly analyze the data packet transmission communication protocol used, and directly block the agreement signature. P2P transfer tools for a variety of different protocol signature, which can analyze the specific P2P tool that is a normal transmission used in the business (voice, e-commerce transactions flows), or used by non-normal business needs (eg BT to download movies, music), which can provide real-time according to business types differentiate traffic reports, and control.



Control P2P download 1



Control P2P download 2

Port and bandwidth constraints

In the gateway, firewall, port blocking on the most common practice is the current, lower cost, but the results are often unsatisfactory. Applications such as BT to allow users to modify the download, upload port, and therefore be placed on transfer port can be easily bypassed, but as noted, if the limit is usually not modified the tracker port (usually 6969) is relatively easier to achieve purpose.

In the conventional method to be ineffective, you can use the bandwidth limitations of the method to control the BT traffic.



Figure 1 set the bandwidth of the LAN host



Figure 2: Set the LAN host traffic

P2P traffic control for the long term QoS and network traffic by sensing technology (eg, Network Identification Code on the P2P protocol) combination, to achieve intelligent control of the business transparent. From the present perspective, QoS and network traffic has a certain perception may have been implemented, but no effective mechanism for integration. In addition, the use of ports and other infrastructure constraints and bandwidth constraints means, to a certain extent, inhibition of BT traffic.







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