CardinalSpline样条曲线(沿着正方形路线走)

 1 //////////////     CardinalSpline  样条曲线   ///////////////
 2     
 3     Sprite* sprite = Sprite::create("button.png");
 4     //sprite->setPosition(Vec2(visibleSize.width * 0.2, visibleSize.height * 0.5));
 5     this->addChild(sprite);
 6 
 7     // 专门存放点的数组
 8     PointArray *arr = PointArray::create(10);
 9     arr->addControlPoint(Vec2(visibleSize.width * 0.2, visibleSize.height * 0.2));
10     arr->addControlPoint(Vec2(visibleSize.width * 0.2, visibleSize.height * 0.8));
11     arr->addControlPoint(Vec2(visibleSize.width * 0.8, visibleSize.height * 0.8));
12     arr->addControlPoint(Vec2(visibleSize.width * 0.8, visibleSize.height * 0.2));
13     arr->addControlPoint(Vec2(visibleSize.width * 0.2, visibleSize.height * 0.2));
14 
15     // 参数(时间，点数，(1代表是直线， >1或<1 都是曲线 ))
16     //ActionInterval * spline = CardinalSplineTo::create(5.0f, arr, 1);
17     //ActionInterval * spline = CardinalSplineTo::create(5.0f, arr, 0.3);
18     //ActionInterval * spline = CardinalSplineTo::create(5.0f, arr, 5);
19 
20     //ActionInterval * spline = CardinalSplineBy::create(5.0f, arr, 1);
21     //ActionInterval * spline = CardinalSplineBy::create(5.0f, arr, 0.3);
22     ActionInterval * spline = CardinalSplineBy::create(5.0f, arr, 5);
23 
24 
25     sprite->runAction(spline);
26 
27     //////////////     CardinalSpline  样条曲线   ///////////////