COCOS2D-X: scale sprite

问题

I want to set scale for a sprite by height of original image. And then the width of that sprite will follow by original ratio of that image. How can i do that. Thank for all your help.

回答1:

CCSprite has a member function

virtual void setScale(float scale)      

Reference:setScale

Just create a sprite, and call this function.

CCSprite* bg = CCSprite::create("background.png");
this->addChild(bg,0);
bg->setScale(2.0);

bg sprite will be twice bigger than the origin one.

回答2:

use setScale function of CCSprite e.g -

CCSprite *Sprite   =   CCSprite::create(WHEEL_SPRITE);
Sprite->setScale(DIRECTOR_VISIBLE_HEIGHT*0.65/Sprite->getContentSize().height);
Sprite->setPosition(ccp(DIRECTOR_VISIBLE_WIDTH/2, DIRECTOR_VISIBLE_HEIGHT/2));
this->addChild(Sprite);

回答3:

You can scale by width or height only with: sprite->setScaleX() and sprite->setScaleY()

来源：https://stackoverflow.com/questions/22340428/cocos2d-x-scale-sprite