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Window. ispointinregion = function (p, points) {//Determines whether a point is within a polygon, p is the current point, and points is a group of points constituting a planePoints = Points | | {};var ncross = 0;var p1 = {};var p2 = {};var pointcount = points.length;for (var i = 0; i P1 = Points[i];P2 = points[(i + 1)% pointcount];Solving the intersection of Y=P.Y and P1P2if (P1. Cy = = P2. Cy)//p1p2 parall

-2 means there is no control inside, so you should be aware that there is no macro definition ID-2 in your control, this is an imperfect point. Then add the variable in the member variable of the class CRect m_rect;//get the initial window sizeControl m_control[10];//up to 10 controls, where code portability is less powerful, but the author is less capable, directly represented by numbers, and not defined by macros Then you can add a method to the OnSize. Controls the size of the control, making

); M_first_ll.setonclicklistener (this); M_second_ll.setonclicklistener (this); AddView (view, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); }/** * @param ll1 Front * @param ll2 negative * * public void Addviews (LinearLayout ll1,linearlayout ll2) { M_FIRST_LL=LL1; M_second_ll=ll2; M_first_ll.setonclicklistener (this); M_second_ll.setonclicklistener (this); AddView (M_first_ll, ViewGroup.LayoutParams.MATCH_PAREN

view size as a parameter initialization, I have rewritten the Onsizechanged method, the method is the name of the view is changed when the size of the call will be called, the first time to join the view tree will be called, but at this time the old value is 0 only:protected void onsizechanged (int w, int h, int oldw, int oldh) {super.onsizechanged (W, H, OLDW, OLDH);//Calculate radius = 1/12 plus 1ra for longer edges Dius = w > H? W/12 + 1:h/12 + 1;//ICC coordinates cx = W/2;

Recently in the study Coretext read a lot of examples of which many of them are not specifically understood so the internet collected the iOS matrix conversion principle to recordCgaffinetransformmake (A,b,c,d,tx,ty)Ad scaling BC rotational tx,ty displacement, base 2D matrixFormulaX=ax+cy+txY=bx+dy+ty1. Basic knowledge of matrices:struct Cgaffinetransform{CGFloat A, B, C, D;CGFloat tx, Ty;};Cgaffinetransform Cgaffinetransformmake (CGFloat a,cgfloat b,

% represents the center of the circle. This is easy to understand. Cx, cy, rAttribute: in fact, it is also easy to understand. The ring gradient, of course, defines the center and radius of the ring. You can understand the size and position of the circle in the above example. Fx, fyAttribute: defines the position of the color center (Focus), that is, the coordinates of the highest color gradient. In the preceding example, the center of the red color

70 pixels (see), and at this point the (30, 30) coordinates are the location shown in the white spot (this position will be used later).Take a closer look, is not soon understand ha ~ ~Five, are you ready? The play is coming.transformthe CSS3 matrix() method is as follows:Transform:matrix (A,B,C,D,E,F);It's scary, it's a lot of arguments, not a slap. Well, if you think a~f of these 6 parameters as the goddess's noun, you will feel that the world is so.In fact, these 6 parameters, the correspond

, to make it change, only with another soldier array of fire, even if it is a small array.The reaction here is the following conversion formula:Where, x y representing all the coordinates (variables) of the transformation element. And ax+cy+e how did that come from behind?ZXX: University time linear algebra knowledge, understand people here can skip directlyVery simply, the 1th value of each row of the 3*3 matrix is multiplied by the 1th value of the

/** calculates the trajectory coordinates of the circle according to the coordinate point of the center, RADIUS, and the coordinate point where the current gesture is located * @param radius Circle radius * @param The coordinate point of the centercircle Center * @param currentpoint the current The coordinate point where the gesture is located * @return Cgpoint returns the coordinates of the circle*/+(Cgpoint) Circlepoint: (cgfloat) Radius withcentercircle: (cgpoint) centercircle withcurrentpoin

: Service unavailable. 2. Configure IIS, open Internet Information Service, right click, web site properties, click the ISAPI Filter tab, Add filter, and enter a rewrite name, specify isapi_rewrite.dll in the path (under the root directory of the software installation.: 3. Add the rewrite rule. Regular, find the installation directory of isapi_rewrite, remove the read-only attribute of httpd. ini, and open edit. Below are some of my rules. [Isapi_rewrite] # Defend your computer from some worm at

+ AD + 1 );}}} Function mklindott (x1, Y1, X2, Y2){If (x1> x2){VaR _ X2 = x2;VaR _ y2 = Y2;X2 = x1;Y2 = Y1;X1 = _ X2;Y1 = _ Y2;}VaR dx = x2-x1, dy = math. Abs (y2-y1 ),X = x1, y = Y1,Yincr = (Y1> Y2 )? -1: 1,Drw = true;If (dx> = Dy){VaR Pr = Dy Pru = Pr-(DX P = Pr-DX;While (dx --)> 0){If (drw) This. mkdiv (X, Y, 1, 1 );Drw =! Drw;If (P> 0){Y + = yincr;P + = Pru;}Else P + = Pr;++ X;}If (drw) This. mkdiv (X, Y, 1, 1 );}Else{VaR Pr = DX Pru = Pr-(dy P = Pr-dy;While (dy --)> 0){If (drw) This. mkdiv

about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them:int SomeFunction(int arg1, int arg2){ return arg1+5;}When using/W4, the compiler complains:“warning C4100: ''arg2'' : unreferenced formal parameter.”To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2.

else doing this with vector rotation. I have never learned this before ~~~~ (>_ Here is a special 90-degree value, which can directly calculate the vector from point C to the origin. Then, the coordinate value of the midpoint is the coordinate value of point C. # Include Void main (){Double X1, Y1, X2, Y2, X3, Y3, X4, Y4, CX, Cy;While (scanf ("% lf", X1, Y1, X2, Y2 )! = EOF){If (x1 = X2 Y1 = Y2)Printf ("Impossible. \ n ");Else{Cx = (X1 + x2)/2

1 1 3 2 2 2 3 3 3 4 1 3 2 1 3 3 2 Sample outputboard 1 have 0 important blks for 2 chessmen. Board 2 have 3 important blks for 3 chessmen. How can we understand that this question is the biggest matching question? The following uses the first group of data as an example: 3 3 4 1 2 1 3 2 1 2 2 For a link (1, 2) and (1, 3), you can select only one link because the two of them are in the same X coordinate. Understand why it is the largest match! This layer is easy to understand.

, ). Suppose you have a function that brings two parameters, but you only use one of them: Int somefunction (INT arg1, int arg2) {return arg1 + 5 ;} When using/W4, the compiler complains: "Warning c4100: ''arg2'': unreferenced formal parameter ." To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2. And because of the statement: Arg2; In fact, the compiler will not generate any code for it

be performed. This applies to the customer area, non-customer area (including title bar and scroll bar), and any part of the parent window exposed by cwnd movement. When this parameter is set to false Program The part that must be re-painted in the cwnd and parent windows must be explicitly invalid or re-painted. The lprectcrect object or rect structure, specifying the new size and position. This function changes the position and size of the window. For the top-level cwnd object, the X and Y pa

string getlastname ();Public abstract void setlastname (string name );Public abstract string getstreet1 ();Public abstract void setstreet1 (string name );Public abstract string getstreet2 ();Public abstract void setstreet2 (string name );Public abstract string getcity ();Public abstract void setcity (string name );Public abstract string getstate ();Public abstract void setstate (string name );Public abstract string getcountry ();Public abstract void setcountry (string name );Public abstract str

their code.The problem is that level 4 really pays too much attention to the details. on Level 4, the compiler will complain about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them: int SomeFunction(int arg1, int arg2){ return arg1+5;} When using/W4, the compiler complains: “warning C4100: ''arg2'' : unreferenced formal parameter.” To cheat the compiler,

Multi-Object Recognition Ideas1. Mark the image first. Give each target a label.2. Calculate the NMI feature values of each labeled target,3. Then these NMI feature values are compared with the known NMI feature values to be identified.If the difference value is smaller than a threshold value, it indicates that the target is the target to be identified.Bool cbiaoji1: objectionextrationnmi (iplimage * SRC) { DWORD T3, T4; bool status = false; T3 =: gettickcount (); Iplimage * imgob = NULL; Ipli

pointer displacement can be calculated, When the mouse displacement is less than 7 o'clock: the pointer displacement is equal to the amount of mouse displacement; When the mouse displacement is greater than or equal to 7 o'clock: the pointer displacement is twice times the mouse displacement amount. In this case the first 20 ratios are as follows, where n is the mouse displacement amount, CX, CY is the pointer displacement amount:N, CX, CY1, 1, 12, 2