What is anchorpoint)

1. the anchor is usually the geometric center of the image,

The values of the two parameters X and Y of anchorpoint (x, y) are usually real numbers between 0 and 1, indicating the position of the anchorpoint relative to the length and width of the node.

For example, the lower left corner of the node is used as the anchor, and the value is (0, 0 );

Use the center of the node as the anchor. The value is (0.5, 0.5 );

Use the lower-right corner of the node as the anchor. The value is ).

The default anchorpoint value of the genie is (0.5, 0.5), and the default value of other nodes is (), such as cclayer.

Related Operations: setanchorpoint (0, 0 );

Impact: 1. Mount position, 2. scaling, 3. rotating

Myanchorpoint. h

# Pragma once # include "cocos2d. H "using_ns_cc; Class myanchorpoint: Public cclayer {public: static ccscene * scene (); static myanchorpoint * Create (); bool Init (); /* original drawing */void draw ();/* screen size */ccsize winsize ;};

Myanchorpoint. cpp

# Include "myanchorpoint. H "/* Create a scenario */ccscene * myanchorpoint: Scene () {ccscene * scene = ccscene: Create (); myanchorpoint * layer = myanchorpoint: Create (); scene-> addchild (layer); Return scene;}/* Create a layer */myanchorpoint * myanchorpoint: Create () {myanchorpoint * pret = new myanchorpoint (); if (pret & pret-> Init () {pret-> autorelease ();} else {Delete pret; pret = NULL;} return pret ;} /* initialize the layer */bool myanchorpoint: Init () {/* initialize the parent class first */cclayer: Init (); /* obtain the screen size */winsize = ccdirector: shareddirector ()-> getwinsize ();/* Create an genie, test the influence of the anchor on the Mount position * // ccsprite * SPR = ccsprite: Create ("anchor3.png");/* Create an genie, test the influence of the anchor on Scaling * // * ccsprite * SPR = ccsprite: Create ("anchor1.png"); SPR-> setscale (2.0f); * // * Create an genie, test the influence of the anchor on rotation */ccsprite * SPR = ccsprite: Create ("anchor2.png");/* rotate 30 degrees with the anchor2.png as the pivot */SPR-> setrotation (30366f ); /* set the sprite position */SPR-> setposition (CCP (winsize. width/2, winsize. height/2);/* set different anches and mount locations. The default anchorpoint is in the geometric center * // SPR-> setanchorpoint (CCP (0, 0 )); // SPR-> setanchorpoint (CCP (0, 1);/* SPR-> setanchorpoint (CCP (1, 0); SPR-> setanchorpoint (CCP (1, 1); * // * Add the sprite to the layer */This-> addchild (SPR); Return true;} void myanchorpoint: Draw () {/* set the color of the drawing. The default value is white */ccdrawcolor4b (255, 0, 0,255);/* draw line */ccdrawline (CCP (0, winsize. height/2), CCP (winsize. width, winsize. height/2); ccdrawcolor4b (255,255, 0,255); ccdrawline (CCP (winsize. width/2, 0), CCP (winsize. width/2, winsize. height ));}

 

What is anchorpoint)