The concept of Anchor point in cocos2d

These two days saw the concept of the anchor point.

/**

* Sets the anchor point in percent.

*

* Anchorpoint is the point around which all transformations and positioning manipulations take place.

* It's like a pin in the node where It's "attached" to its parent.

* The anchorpoint is normalized, like a percentage. (0,0) means the bottom-left corner and () means the top-right corner.

* But your can use values higher than and lower than (0,0) too.

* The default anchorpoint is (0.5,0.5), so it starts in the center of the node.

*

* @param anchorpoint The anchor point of node.

*/

virtual void Setanchorpoint (const ccpoint& anchorpoint);

Anchorpoint is the point around which all transformations and positioning manipulations take place.

It is used for reference points when locating positions and flipping.

ccsprite* sprite5 = ccsprite::create ("Closenormal.png");

Sprite5->setanchorpoint (CCP (0.5,0.5));

Sprite5->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (SPRITE5);

At this time (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2)) point is the center point of the Sprite5 (CCP (0.5,0.5))

Ccsize visiblesize = Ccdirector::shareddirector ()->getvisiblesize ();

Ccpoint origin = Ccdirector::shareddirector ()->getvisibleorigin ();

upper right corner

ccsprite* sprite1 = ccsprite::create ("Closeselected1.png");

Sprite1->setanchorpoint (CCP (0,0));

Sprite1->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (SPRITE1);

Upper left corner

ccsprite* Sprite2 = ccsprite::create ("Closenormal.png");

Sprite2->setanchorpoint (CCP (1,0));

Sprite2->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (SPRITE2);

Lower left corner

ccsprite* sprite3 = ccsprite::create ("Closenormal.png");

Sprite3->setanchorpoint (CCP);

Sprite3->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (Sprite3);

Lower right corner

ccsprite* sprite4 = ccsprite::create ("Closenormal.png");

Sprite4->setanchorpoint (CCP (0,1));

Sprite4->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (SPRITE4);

Middle

ccsprite* sprite5 = ccsprite::create ("Closenormal.png");

Sprite5->setanchorpoint (CCP (0.5,0.5));

Sprite5->setposition (CCP (ORIGIN.X+VISIBLESIZE.WIDTH/2, ORIGIN.Y+VISIBLESIZE.HEIGHT/2));

This->addchild (SPRITE5);

The concept of Anchor point in cocos2d