cocos2d-x中DrawNode常见的图像绘制函数

//绘制矩形  (‘起始点’ , ‘目标点’ , ‘填充颜色’)

auto rect=DrawNode::create();

rect->drawRect(Vec2(0,0),Vec2(100,150), Color4F(1.0,0,0,1.0));

this->addChild(rect);

//绘制指定曲率的曲线  ('点数组','张力','段落','颜色')

//参数说明:

//congfig:点数组

//tension:张力

//segments:段落

//color:颜色

auto cardinalspline=DrawNode::create();

auto array = PointArray::create(4);

array->addControlPoint(Vec2(20, 20));

array->addControlPoint(Vec2(40, 10));

array->addControlPoint(Vec2(-10, 10));

array->addControlPoint(Vec2(60, -10));

array->addControlPoint(Vec2(10, 50));

cardinalspline->drawCardinalSpline(array, 3, 10, Color4F(1.0,1.0,1.0,1));

this->addChild(cardinalspline);

//绘制默认曲率的曲线

auto cat=DrawNode::create();

cat->drawCatmullRom(array, 20, Color4F(1.0, 1.0, 1.0, 1.0));

this->addChild(cat);

//绘制圆  参数说明: （‘原点’，‘半径’，‘弧度’，‘分段(越大越接近圆)’，‘原点到弧度的线(bool)’，‘线条x缩放’，‘线条y缩放’，‘颜色’）

auto circle=DrawNode::create();

circle->drawCircle(Vec2(0, 0), 100, 45, 100, false, 1.0, 1.0, Color4F(1.0,1.0,1.0,1));

this->addChild(circle);

//绘制线段          (‘起点’ , ‘终点’ , ‘半线宽’ , ‘填充颜色’)

auto segment=DrawNode::create();

segment->drawSegment(Vec2(0, 0), Vec2(20, 20), 3.0, Color4F(0.4,0.6,0.8,1));

this->addChild(segment);

//绘制三角形         (‘顶点1′ , ‘顶点2′ , ‘顶点3′ , ‘填充颜色’)

auto triangle=DrawNode::create();

triangle->drawTriangle(Vec2(20,11), Vec2(133,44), Vec2(44,133), Color4F(0.5,0.6,0.7,1));

this->addChild(triangle);

//绘制多边形        (‘顶点数组’ , ‘顶点个数’ , ‘填充颜色’ , ‘轮廓粗细’ , ‘轮廓颜色’)

auto polygon=DrawNode::create();

Vec2 verts[]={Vec2(12,22),Vec2(56,66),Vec2(88,98),Vec2(124,54),Vec2(144,88)};//顶点数组

polygon->drawPolygon(verts, 5, Color4F(1.0,0,0,1), 2, Color4F(0,0,1.0,1));

this->addChild(polygon);

//绘制二次贝塞尔图形        (‘起点’ , ‘控制点’ , ‘终点’ , ‘分段数’ , ‘填充颜色’)

auto quad=DrawNode::create();

quad->drawQuadBezier(Vec2(12,10), Vec2(22,33), Vec2(111,111), 20, Color4F(0.1,1.0,0.2,1));

this->addChild(quad);

//绘制三次贝塞尔图形    (‘起点’ , ‘控制点1′ , ‘控制点2′ , ‘终点’ , ‘分段数’ , ‘填充颜色’)

auto cubic=DrawNode::create();

cubic->drawCubicBezier(Vec2(0,0), Vec2(33,23), Vec2(75,96), Vec2(44,33), 22, Color4F(0.7,0,0,1));

this->addChild(cubic);

//绘制线段  ('起点','终点','宽度','颜色')

auto dsegment=DrawNode::create();

dsegment->drawSegment(Vec2(20, 22), Vec2(20,100), 2, Color4F(1.0,0.1,0.8,1));

this->addChild(dsegment);

//绘制线   ('起点','终点','颜色')

auto line=DrawNode::create();

line->drawLine(Vec2(33,33), Vec2(222,222), Color4F(1.0,1.0,0.2,1));

this->addChild(line);

//绘制圆点      (‘位置’ , ‘圆点半径’ , ‘填充颜色’)

auto dot=DrawNode::create();

dot->drawDot(Vec2(0,0), 5, Color4F(1.0, 1.0, 1.0, 1.0));

rect->addChild(dot);

//设置坐标位置

rect->setPosition(visibleSize/2);//设置矩形位置居中

dot->setPosition(Vec2(0, 0));//设置圆点的位置

cardinalspline->setPosition(visibleSize/2);//设置曲线位置

circle->setPosition(visibleSize/2);

segment->setPosition(visibleSize/2);

triangle->setPosition(visibleSize/2);

polygon->setPosition(visibleSize/5);

quad->setPosition(Vec2(230,20));

cubic->setPosition(visibleSize/2);

dsegment->setPosition(Vec2(22,22));

line->setPosition(Vec2(44,22));

cat->setPosition(Vec2( visibleSize.width/2+50,visibleSize.height/2+20));