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DrawPrimitivesDrawNode
DrawPrimitives
3.x 已经弃用
绘制的图形可以是实心的#xff0c;也可以是空心的。
DrawNode
在一个单独的批处理中绘制了所以元素#xff0c;因此它绘制点、线段、多边形都要比“drawing primitives”快。
绘制的图形都…cocos2dx 两种绘图方式
DrawPrimitivesDrawNode
DrawPrimitives
3.x 已经弃用
绘制的图形可以是实心的也可以是空心的。
DrawNode
在一个单独的批处理中绘制了所以元素因此它绘制点、线段、多边形都要比“drawing primitives”快。
绘制的图形都是实心的。
使用方法
local node cc.DrawNode:create()
node:clear()
ret:addChild(node)基本的图形绘制
使用DrawNode通常用来绘制如下几种图形
圆点
drawDot
// (位置 , 圆点半径 , 填充颜色)
void drawDot(const Vec2 pos, float radius, const Color4F color);例子
auto dotDrawNode::create();
dot-drawDot(Vec2(0,0), 5, Color4F(1.0, 1.0, 1.0, 1.0));
rect-addChild(dot); 线段
drawSegment
// (起点 , 终点 , 半线宽 , 填充颜色)
void drawSegment(const Vec2 from, const Vec2 to, float radius, const Color4F color);示例
auto segmentDrawNode::create();
segment-drawSegment(Vec2(0, 0), Vec2(20, 20), 3.0, Color4F(0.4,0.6,0.8,1));
this-addChild(segment);三角形
drawTriangle
//(顶点1 , 顶点2 , 顶点3 , 填充颜色)
void drawTriangle(const Vec2 p1, const Vec2 p2, const Vec2 p3, const Color4F color);示例
auto triangleDrawNode::create();
triangle-drawTriangle(Vec2(20,11), Vec2(133,44), Vec2(44,133), Color4F(0.5,0.6,0.7,1));
this-addChild(triangle);多边形
drawPolygon
// (顶点数组 , 顶点个数 , 填充颜色 , 轮廓粗细 , 轮廓颜色)
void drawPolygon(Vec2 *verts, int count, const Color4F fillColor, float borderWidth, const Color4F borderColor);示例
auto polygonDrawNode::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);二次贝塞尔图形
drawQuadraticBezier
drawQuadBezier
// (起点 , 控制点 , 终点 , 分段数 , 填充颜色)
void drawQuadraticBezier(const Vec2 from, const Vec2 control, const Vec2 to, unsigned int segments, const Color4F color);void drawQuadBezier(const Vec2 origin, const Vec2 control, const Vec2 destination, unsigned int segments, const Color4F color);示例
auto quadDrawNode::create();
quad-drawQuadBezier(Vec2(12,10), Vec2(22,33), Vec2(111,111), 20, Color4F(0.1,1.0,0.2,1));
this-addChild(quad);三次贝塞尔图形
drawCubicBezier
// (起点 , 控制点1 , 控制点2 , 终点 , 分段数 , 填充颜色)
void drawCubicBezier(const Vec2 from, const Vec2 control1, const Vec2 control2, const Vec2 to, unsigned int segments, const Color4F color);示例
auto cubicDrawNode::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);Vec2 from2 Vec2(300, 100);
Vec2 to2 Vec2(450, 100);
Vec2 control1 Vec2(350, 0);
Vec2 control2 Vec2(400, 200);
drawNode-drawCubicBezier(from2, control1, control2, to2, 100, Color4F::YELLOW);实心矩形
drawSolidRect
// (原点 ‘终点’ 填充颜色)
void drawSolidRect(const Vec2 origin, const Vec2 destination, const Color4F color);画圆
drawCircle
//‘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’
void drawCircle(const Vec2 center, float radius, float angle, unsigned int segments, bool drawLineToCenter, const Color4F color);void drawCircle( const Vec2 center, float radius, float angle, unsigned int segments, bool drawLineToCenter, float scaleX, float scaleY, const Color4F color);示例
auto circleDrawNode::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);绘制指定曲率的曲线
drawCardinalSpline
//congfig:点数组
//tension:张力
//segments:段落
//color:颜色void drawCardinalSpline(PointArray *config, float tension, unsigned int segments, const Color4F color);示例
auto cardinalsplineDrawNode::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
drawCatmullRom
void drawCatmullRom(PointArray *points, unsigned int segments, const Color4F color);示例
auto catDrawNode::create();
cat-drawCatmullRom(array, 20, Color4F(1.0, 1.0, 1.0, 1.0));
this-addChild(cat);绘制直线
drawLine
//(起点,终点,颜色)
void drawLine(const Vec2 origin, const Vec2 destination, const Color4F color);示例
auto lineDrawNode::create();
line-drawLine(Vec2(33,33), Vec2(222,222), Color4F(1.0,1.0,0.2,1));
this-addChild(line);
