CODEWITHSUNDEEP
cocos2d-iphone
whitebear
whitebear

Reputation: 12433

Changing only anchor point not position

How to change anchorpoint and don't change the position??

I have a sprite which has anchor 0,0.

However, I would like to change anchor 0.5,0.5 temporary,because I would like to rotate the sprite.

What I want to do is like this.

  CGPoint anchorPointOriginal = ccp(0,0);
  CGPoint anchorPointTemp = ccp(0.5,0.5);


  [mySprite setAnchorPoint:anchorPointTemp];

  //Rotate

  [mySprite setAnchorPoint:anchorPointOriginal];

But when I change the anchorPoint, sprite also moves the position according to the new anchorpoint

Is it possible to keep the sprite position and only change the anchor point??

Upvotes: 0

Views: 205

Answers (2)

Olimjon Kenjaev
Olimjon Kenjaev

Reputation: 39

if you are using cocos2d-iphone 2.0 or later version then you could simply use the
ignoreAnchorPointForPosition property 

mySprite.ignoreAnchorPointForPosition = YES;

Upvotes: 0

0x141E
0x141E

Reputation: 12753

Try changing the sprite's location when you change the anchor point. Something like...

mySprite.anchorPoint = anchorPointTemp;

mySprite.position = CGPointMake(mySprite.position.x+mySprite.size.width/2,
             mySprite.position.y+mySprite.size.height/2);

This will change the anchorPoint and move the sprite to correctly compensate for the position change (due to the anchor point change).

You will need to undo this if you want to change the anchor point back to CGPointZero.

Upvotes: 1

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