in each direction: 0, 0.5, 1. The middle-red dots are their respective anches. The sprite1 anchor is () in the lower left corner, and the sprite2 anchor is () in the upper right corner.
Now let's take a look at coordinate system transformation. Similarly, let's first write the point test code:
CCPoint p1 = sprite2->convertToNodeSpace(sprite1->getPosition());CCPoint p2 = sprite2->convertToWorldSpace(sprite1->getPosition());CCPoint p3 = sprite2->convertToNodeSpaceAR(sprite1->getPosition());CCPoin
, p2, p3, p4, s, t ); // returns whether the straight line where p1 is the start point p2 is the end line 1 and p3 is the start point p4 is the end line 2. If yes, parameters s and t return the ratio of the intersection online segment 1 and Line Segment 2.// Obtain the intersection of s and t by p1 + s * (p2-p1) or p3 + t * (p4-p3.CcpSegmentIntersect (A, B C, D
items deleted from the queue, A ValueError exception q. join (): The producer calls this method for blocking until all items in the queue are processed. Blocking continues until every project in the queue calls the q. task_done () method.
From multiprocessing import Process, JoinableQueueimport timeimport randomimport osdef consumer (q): while True: res = q. get () time. sleep (random. randint (1, 3) print ('% s eat % s' % (OS. getpid (), res) q. task_done () def product_baozi (q): for I in ran
queue. After that, the player would immediately connect to the server again and starts queuing at the tail of the queue.3. Activation succeeded:this happens with the probability of P3. Congratulations, the player would leave the queue and enjoy the game himself.4. Service unavailable:this happens with the probability of P4. Something just happened and the server are down. The website must shutdown the server at once. All the requests is still in the
A P4 Server0. Download perforce.exe on the internet, install it, and run perforce as a service by default after installation.The executable file of 110000p4serveris p4d.exe (running as a server) or p4s.exe (running as a service ).2) For P4 administrator operations, the P4 user must be a superuser with at least admin permissions.
2. Start p4server
1) after ins
To determine whether two polygons intersect, simply determine if the edges intersect.The amount of coding is a bit large, but the idea is quite simple.#include #include#include#include#includestring>#include#include#include#includeusing namespacestd;strings;structpoint{Doublex; Doubley; Point (DoubleADoubleb) {x=a;y=b;}};structsharp{stringname; Vectorv; Vectorstring>ans;} sharp[ -];inttot;BOOLcmpConstSharpa,Constsharpb) { returna.nameB.name;}voidWork () {inta,b,c,d,e,f; if(s=="Square") {scanf
rotation) will be around the anchor point , we can be seen as the center of the elf position, in general there are three possible values in each direction: 0,0.5,1. The red dots are the respective anchor points, the sprite1 anchor Point is (0,0) the lower left corner, and the Sprite2 anchor point is in the upper right corner.Now let's look at the coordinate system transformation, and again, let's write some test code:Ccpoint P1 = Sprite2->converttonodespace (Sprite1->getposition ()); Ccpoint P2
The following algorithms are available in QoS queue scheduling:
1. SP
SP: strict priority (strict priority). SP scheduling sends the group in the higher-priority queue in strict order of priority from high to low. When the higher-priority queue is empty, resend the group in the lower-priority queue. The queue 7 has the highest priority and the queue 0 has the lowest priority.
Packets P1 ~ P11 ~ P... Enter different priority queues according to the classification, and the classification is mappe
Introduction to backup implemented by perforce
Creation Method: On the perforce server, use the-JC flag to create the server.
By default, the P4d-r root-JC is saved as the checkpoint. N file and journal. n-1 in the root directory of the perforce program to record historical data at the same time.
The last checkpint. N and this journal. This is all the information of the current checkpoint database. For example, you can use checkpint.5 and change log journal.5 to restore data to checkpoint.6. I
. Practice 2.10
It is very simple. Because the upper and lower bounds of Y are used as denominator, it is determined whether it is 0:(Define (div-interval x y)(If (or (= 0 (upper-bound y) (= 0 (lower-bound y )))(Display "Division by zero ")(Mul-interval x(Make-interval (/1.0 (upper-bound y ))(/1.0 (lower-bound y ))))))
5. Practice 2.11
Ben's mysterious words really make Program Became obscure:(Define (mul-interval x y)(Let (A (lower-bound X ))(B (upper-bound X ))(C (lower-bound y ))(D (up
the system is in a deadlock state. If yes, executes the deadlock relief policy.
6. deadlock relief: used in combination with Deadlock Detection. The method used is deprivation. Forcibly allocate resources to other processes.
Banker algorithm:
Example: A system has four mutex resources: R1, R2, R3, and R4. The available resources are 3, 5, 6, and 8. Assume that there are four processes P1, P2, P3, and P4 at T0, and the maximum resource demand and all
Bat + sqlcmd run scripts in batches and batsqlcmd run scripts
Hello, this BAT script helps developers to Batch Execute all SQL scripts in a folder by file name in the specified database. Powershell invoke-sqlcmd is too cumbersome to handle.
Bat file
@echo off@REM ******** ******** General Batch for Starting SQL ******** ******** @REM %1 is the name of SQL script file@rem SET SQL_NAME=%1@SET SQL_NAME=%1@SHIFT /1@REM SHIFT /1@REM P1... is parameters of SQLCMD,P1=%1...@rem c for count@set /a c=0@r
Perforce cannot upload empty folders, and unlike SVN, you do not need to upload folders separatelyUpload the folder below the file, the folder is automatically uploaded.Command :P4 [g-opts] add [-C changelist#] [-f-n] File ...G-opts Global Options-c Specifies to add files related to Changelist;-f Specifies to increase the use of wildcard matching files;-N Displays the file that will be added but does not change the metabase recordNote:
call a named sp_reset_ Connection stored procedures, see the name guess should be connected to the database meaning, and then for each row modified data to execute a stored procedure called Execsp_executesql, update the database, such as I modify the data after a row to get a statement " Execsp_executesqln ' update[providerinfo]set[telno]= @p1 where (([id]= @p2) AND ([name]= @p3) AND (@p4 =1 And[address]isnull) OR ([address]= @p5)) AND (@p6 = 1and[t
from low to high upward
(Stack downward growth is:
If the first stack data is saved at address 0x60, the next stack data is saved to the address 0x5f
Conversely, if the stack is up, the second data is saved to the address 0x61
)
compiler vs2005,32 bit-bit wide Intel Cpu,x86 architecture
Validation code:
#include #include "stdio.h"void function (int *p){int b = 3,c = 0;printf ("Address of B.%p\n", b);printf ("Address of the C is%p\n", c); }void Main (){Verify the growth direction of the stackint
THAN (16), PARTITION p3 VALUES LESS THAN MAXVALUE);Depending on the TIMESTAMP range: CREATE TABLE quarterly_report_status (report_id INT not NULL, Report_status VARCHAR () is not NULL, Report_u pdated TIMESTAMP not NULL DEFAULT current_timestamp on UPDATE current_timestamp) PARTITION by RANGE (unix_timestamp _updated)) (PARTITION p0 values less THAN (Unix_timestamp (' 2008-01-01 00:00:00 '), PARTITION p1 values less THAN (Unix_timestamp (' 2008-04-01 00:00:00 ')), PARTITION p2 VALUES les
Merge the data of two rows in a single table with the same content into one row for display. The value of the merge p1 and p2 fields. Createtabletest (p1varchar (10), p2varchar (10), p3varchar (10), p4varchar (10), p5varchar (10) None (selectaaa. p1, bbb. p2, aaa. p3, aaa. p4, aaa. p5from (selectRO
Merge the data of two rows in a single table with the same content into one row for display. The value of the merge p1 and p2 fields. Createtabletest (p1va
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