用鼠标任意画线

用鼠标任意画线 效果 可按住鼠标任意画线 可作简单的涂鸭工具 代码 createEmptyMovieClip xian 1 with xian root onMouseMove function if draw root lineStyle 0 0 x000000 100 root lineTo root xmouse root ymouse root onMouseDown function draw true root moveTo root xmouse root ymouse root onMouseUp function draw false 用鼠标任意画直线 效果 类似 flash 中的直线工具 代码 createEmptyMovieClip line n with line lineStyle 1 0 x000000 100 moveTo 0 0 lineTo 100 100 line visible 0 root onMouseDown function qidian x root xmouse qidian y root ymouse with line x qidian x y qidian y xscale 0 yscale 0 visible 1 root onMouseMove function endX root xmouse endY root ymouse if root line root line setProperty root line yscale endX qidian x else setProperty root line xscale endY qidian y setProperty root line yscale endY qidian y else setProperty root line xscale endX qidian x setProperty root line yscale endY qidian y root onMouseUp function if root xmouse qidian x 0 i Objectx Copy add i duplicateMovieClip root line Objectx i setProperty Objectx x qidian x setProperty Objectx y qidian y root i i setProperty root line visible 0 用鼠标任意画矩形 效果 类似 flash 中的矩形工具 代码 createEmptyMovieClip line n with line lineStyle 0 1 0 x000000 100 moveTo 0 0 lineTo 100 0 lineTo 100 100 lineTo 0 100 lineTo 0 0 line visible 0 root onMouseDown function qidian x root xmouse qidian y root ymouse with line x qidian x y qidian y xscale 0 yscale 0 visible 1 root onMouseMove function endX root xmouse endY root ymouse if root line root line setProperty root line yscale endX qidian x else setProperty root line xscale endY qidian y setProperty root line yscale endY qidian y else setProperty root line xscale endX qidian x setProperty root line yscale endY qidian y root onMouseUp function if root xmouse qidian x 0 i Objectx Copy add i duplicateMovieClip root line Objectx i setProperty Objectx x qidian x setProperty Objectx y qidian y root i i setProperty root line visible 0 用鼠标任意画圆 椭圆 效果 类似 flash 中的工具 代码 createEmptyMovieClip line n with line for n 1 nMath abs endY qidian y setProperty root line xscale endX qidian x setProperty root line yscale endX qidian x else setProperty root line xscale endY qidian y setProperty root line yscale endY qidian y else setProperty root line xscale endX qidian x setProperty root line yscale endY qidian y root onMouseUp function if root xmouse qidian x 0 i Objectx Copy add i duplicateMovieClip root line Objectx i setProperty Objectx x qidian x setProperty Objectx y qidian y root i i setProperty root line visible 0 两定点画虚线 代码 MovieClip prototype dashTo function startPoint destPoint dashLength spaceLength var x destPoint x startPoint x var y destPoint y startPoint y var hyp Math sqrt x x y y var units hyp dashLength spaceLength var dashSpaceRatio dashLength dashLength spaceLength var dashX x units dashSpaceRatio var spaceX x units dashX var dashY y units dashSpaceRatio var spaceY y units dashY this moveTo startPoint x startPoint y while hyp 0 startPoint x dashX startPoint y dashY hyp dashLength if hyp 0 startPoint x destPoint x startPoint y destPoint y this lineTo startPoint x startPoint y startPoint x spaceX startPoint y spaceY this moveTo startPoint x startPoint y hyp spaceLength this moveTo destPoint x destPoint y createEmptyMovieClip DrawingSpace 1 with DrawingSpace lineStyle 0 0 x000000 100 dashTo x 300 y 0 x 0 y 400 3 10 从一点到另一点画虚线 代码 function DrawDottedLine targetMC linewidth fromX fromY toX toY targetMC 目标 MovieClip 德 InstanceName linewidth 线宽 fromX fromY 从 fromX fromY 处开始画 toX toY 画到 toX toY 处 var x y eval targetMC lineStyle lineWidth 0 x000000 100 线的颜色是黑色 0 x000000 eval targetMC moveTo fromX fromY x fromX y fromY while x toX x x 4 Math sqrt toY fromY toY fromY toX fromX toX fromX toX fromX y y 4 Math sqrt toY fromY toY fromY toX fromX toX fromX toY fromY eval targetMC lineTo x y x x 4 Math sqrt toY fromY toY fromY toX fromX toX fromX toX fromX y y 4 Math sqrt toY fromY toY fromY toX fromX toX fromX toY fromY eval targetMC moveTo x y createEmptyMovieClip obj 1 建一空影片 DrawDottedLine root obj 1 10 10 200 300 调用函数 从场景的左上角到鼠标画虚线 代码 x 0 y 0 场景左上角的坐标 l 0 mx root xmouse my root ymouse 鼠标的坐标 ml Math sqrt mx mx my my 三角形的斜边长 root moveto 0 0 画线的起点为场景左上角的坐标 root linestyle 0 1 0 x000000 100 下面用三角函数求出每一段虚线的端点坐标 然后用循环重复画一条短线和空格 直到 线的终点位置 while l1 this lineStyle w w c c a a this t lineStyle w c a var i 0 var l this points length while i1 if this lines this clear this t lineStyle this lineStyle w this lineStyle c this lineStyle a else this t lineStyle 0 0 xFFFFFF 0 if this filled this clear this t beginFill c a var i 0 var l this points length while i l this t lineTo this points i x this points i y i this t endFill this filled true Shape prototype getX function if this points length return this points this points length 1 x Shape prototype getY function if this points length return this points this points length 1 y g new Shape g addPoint 0 100 g addPoint 100 100 g addPoint 100 0 g addPoint 0 0 g fill 0 x339900 100 g draw 5 0 x000000 100 代码 onMouseDown init function init 创建羽毛 并设置羽毛各个参数及对函数的调用 feather createEmptyMovieClip f i 10000 i feather swapDepths Math random 10000 feather x xmouse feather y ymouse feather rotation 90 Math random 40 20 col Math random 255 len delete onEnterFrame 用 as 画圆 代码 思路 用不间断的連线形成一个圆 实际上一个正 360 度多边形 应用 按此法可画任意的图形 如抛物线 螺旋线等 只需把方程修改即可 第 2 个代码就是一个应用 画椭圆 root onLoad function System Usecodepage true 这句我也不知道什么意思 加了以后就支持中文了 是从 好笨 那里学 来的 誰知道告诉我 谢谢 root createTextField txtLoad 151 50 280 400 30 建 一文本 名 层次 x y 宽度 高度 root txtLoad text 这是一个画线的应用 zjs35 制作 zjs35 文本中的内容 daxiao 100 圆的半径 yuanxin x 200 yuanxin y 150 圆心的坐标 root onEnterFrame function a daxiao Math cos n Math PI 180 b daxiao Math sin n Math PI 180 根据圆的方程定义一个起点 c daxiao Math cos n 1 Math PI 180 d daxiao Math sin n 1 Math PI 180 定义一个终点 createEmptyMovieClip yuan n with yuan lineStyle 2 0 x000000 50 定义线的样式 moveTo a yuanxin x b yuanxin y lineTo c yuanxin x d yuanxin y 从起点到终点画线 if n 360 n n 1 控制画线的长度 刚好一个圆 1 表示画线的速度 画正多边形 代码 这是一个画正多边形的程序 思路 把一个圆划分成 n 等分 把这些点連接起来 下面是按钮上代码 另外在场景中建两可输入文本框 名为 aa bb on release daxiao aa 获取多边形的大小 以像素为单位 bianshu bb 获取边数 整数 从 3 开始 到无穷大 n 多边形就是圆 jiaodu 360 bianshu 得到每个等分的角度 for n 1 n bianshu n for 循环 由 bianshu 来控制循环的次数 也就是要画的多边形的边数 a daxiao math cos n jiaodu math pi 180 b daxiao math sin n jiaodu math pi 180 定义起点的坐标 c daxiao math cos n 1 jiaodu math pi 180 d daxiao math sin n 1 jiaodu math pi 180 定义终点的坐标 createEmptyMovieClip xian n 创建一个空影片 xian n 为层次 with xian lineStyle 2 0 xff0000 100 定义线的大小 颜色 透明度 moveTo a 300 b 200 lineTo c 300 d 200 从起点到终点画线 用 as 画字母 F 作者 寒蓝 代码 创建一个空的 mc root createEmptyMovieClip myMc 0 定义 mc 的位置 myMc x 100 myMc y 50 定义填充 myMc beginFill 0 xff0000 100 colors 0 xFF0000 0 xffffff alphas 100 100 ratios 0 0 xFF matrix a 50 b 0 c 0 d 0 e 50 f 0 g 50 h 50 i 1 myMc beginGradientFill linear colors alphas ratios matrix 定义画线的样式 myMc lineStyle 1 0 xff0000 100 移动初始点 myMc moveTo 100 0 连接曲线 myMc curveTo 65 5 50 50 myMc curveTo 35 95 0 100 连接直线 myMc lineTo 0 120 myMc curveTo 45 110 62 70 myMc lineTo 90 70 myMc lineTo 90 50 myMc lineTo 70 50 myMc curveTo 80 20 100 20 myMc lineTo 100 0 结束填充 myMc endFill 清除所画 myMc clear 画正弦线 代码 root onLoad function daxiao 100 yuanxin x 00 yuanxin y 150 root onEnterFrame function a daxiao Math sin n Math PI 180 c daxiao Math sin n 1 Math PI 180 createEmptyMovieClip xian n with xian lineStyle 1 0 x339900 50 moveTo n yuanxin x a yuanxin y lineTo n 1 yuanxin x c yuanxin y if n 400 n n 1 2 画余弦线 代码 root onLoad function daxiao 100 yuanxin x 00 yuanxin y 150 root onEnterFrame function a daxiao Math cos n Math PI 180 c daxiao Math cos n 1 Math PI 180 createEmptyMovieClip yuan n with yuan lineStyle 1 0 x000000 50 moveTo n yuanxin x a yuanxin y lineTo n 1 yuanxin x c yuanxin y if n 400 n n 1 2 画心脏线 代码 这是一个用 MX 新增功能画线的例子 比在 5 中用点复制法画线简单多了 用此方法 可动态画数学中所 有的图形 root onLoad function daxiao 40 设定心脏线的大小 root onEnterFrame function a daxiao 2 Math cos n Math PI 180 Math cos 2 n Math PI 180 通过心脏线的方程定义起点的 x 坐标 b daxiao 2 Math sin n Math PI 180 Math sin 2 n Math PI 180 通过心脏线的方程定义起点的 y 坐标 c daxiao 2 Math cos n 1 Math PI 180 Math cos 2 1 n Math PI 180 d daxiao 2 Math sin n 1 Math PI 180 Math sin 2 1 n Math PI 180 同理定义终点的经 x y 坐标 createEmptyMovieClip yuan n 创建一个空影片 yuan with yuan lineStyle 0 5 0 x000000 100 定义线的大小 颜色 透明度 moveTo a 200 b 150 lineTo c 200 d 150 从起点到终点画一条线 并把图形的中心点定为 200 150 if n 360 n n 1 画螺旋线 代码 root onEnterFrame function a 10 0 1 n Math cos n Math PI 180 b 10 0 1 n Math sin n Math PI 180 c 10 0 1 n Math cos n 1 Math PI 180 d 10 0 1 n Math sin n 1 Math PI 180 createEmptyMovieClip yuan n with yuan lineStyle 2 0 x000000 50 moveTo a 200 b 150 lineTo c 200 d 150 if n 900 n n 1 旋转的长方体 代码 a 50 Math cos n Math PI 180 b 100 Math sin n Math PI 180 c1 300 c2 200 root createEmptyMovieClip triangle 1 with root triangle lineStyle 1 0 x000000 50 moveTo a c1 b c2 lineTo 50 math cos n 90 math pi 180 c1 100 math sin n 90 math pi 180 c2 lineTo 50 math cos n 180 math pi 180 c1 100 math sin n 180 mat h pi 180 c2 lineTo 50 math cos n 270 math pi 180 c1 100 math sin n 270 mat h pi 180 c2 lineTo 50 math cos n 360 math pi 180 c1 100 math sin n 360 mat h pi 180 200 lineStyle 1 0 x000000 50 moveTo a 200 b 100 lineTo 50 math cos n 90 math pi 180 200 100 math sin n 90 math p i 180 100 lineTo 50 math cos n 180 math pi 180 200 100 math sin n 180 ma th pi 180 100 lineTo 50 math cos n 270 math pi 180 200 100 math sin n 270 ma th pi 180 100 lineTo 50 math cos n 360 math pi 180 200 100 math sin n 360 ma th pi 180 100 lineStyle 1 0 x000000 30 moveTo a 200 b 100 lineTo a c1 b c2 moveTo 50 math cos n 90 math pi 180 c1 100 math sin n 90 math pi 180 c2 lineTo 50 math cos n 90 math pi 180 200 100 math sin n 90 math p i 180 100 moveTo 50 math cos n 180 math pi 180 c1 100 math sin n 180 mat h pi 180 c2 lineTo 50 math cos n 180 math pi 180 200 100 math sin n 180 ma th pi 180 100 moveTo 50 math cos n 270 math pi 180 c1 100 math sin n 270 mat h pi 180 c2 lineTo 50 math cos n 270 math pi 180 200 100 math sin n 270 ma th pi 180 100 用 as 做烛光 相当逼真 代码 offsetX 275 offsetY 100 left 0 right 0 top 0 leftGoal 0 rightGoal 0 topGoal 0 rate 2 decay 9 for var i 0 iside change Math random dist else if cur side change Math random dist return change onEnterFrame function leftGoal Math random 6 3 leftGoal checkEdge leftGoal 10 3 rightGoal Math random 6 3 rightGoal checkEdge rightGoal 10 3 topGoal Math random 8 4 topGoal checkEdge topGoal 15 4 leftAccel leftGoal left rate leftVeloc leftAccel leftVeloc decay left leftVeloc rightAccel rightGoal right rate rightVeloc rightAccel rightVeloc decay right rightVeloc topAccel topGoal top rate topVeloc topAccel topVeloc decay top topVeloc for var i 0 i shapes length i with root flame i clear colors 0 xFCE39C 0 xF4AC35 alphas root flame i fade root flame i fade 20 ratios 70 255 matrix matrixType box x 50 y 50 w 100 h 200 r 0 beginGradientFill radial colors alphas ratios matrix lineStyle 1 0 x000000 0 moveTo 0 left right 0 top root flame i offset 2 curveTo 40 root flame i o ffset right 180 0 200 curveTo 40 root flame i offset left 180 0 left right 0 top root flam e i offset 2 endFill with root heat clear colors 0 x986932 0 x986932 alphas 70 0 ratios 20 255 matrix matrixType box x 20 left 2 y 120 top w 40 right 2 h 12 0 top r 0 beginGradientFill radial colors alphas ratios matrix lineStyle 1 0 x000000 0 mo veTo 50 0 lineTo 50 0 lineTo 50 200 lineTo 50 200 lineTo 50 0 endFill duplicateM ovieClip root flame shapes length 1 shapeMask shapes length 1 heat setMask shapeMask 十四面体代码 root onLoad function c1 200 c2 250 c3 50 c4 10 root onEnterFrame function aa 100 bb 100 控制横向 cc root right s3 getvalue dd root right s4 getvalue ee root right s5 getvalue ff root right s6 getvalue gg root right s7 getvalue daxiao1 aa daxiao2 bb sutu cc zhox ee bianshu1 dd 控制速度和方向 root createEmptyMovieClip triangle 1 lineStyle 0 0 x000000 100 with root triangle 画虚线 a1 daxiao2 math sin n 1 60 math pi 180 b1 daxiao1 math cos n 1 60 math pi 180 a2 daxiao2 math sin n i 1 60 math pi 180 b2 daxiao1 math cos n i 1 60 math pi 180 lineStyle 1 0 xff0000 100 中面的 6 个点 moveTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg c3 连上下的 12 个点 moveTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg moveTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg moveTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg 中面的 6 个点 但连线不一样 注意 moveTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math co s n 1 60 math pi 180 c2 gg lineTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg lineTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg lineTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg c3 取下面的顶点 及 3 个点并连线 lineStyle 1 0 x336600 60 moveTo c1 c2 gg c3 c3 150 c3 lineTo daxiao2 c4 math sin n 5 30 math pi 180 c1 daxiao1 math cos n 5 30 math pi 180 c2 gg c3 c3 150 moveTo c1 c2 gg c3 c3 150 c3 lineTo daxiao2 c4 math sin n 9 30 math pi 180 c1 daxiao1 math cos n 9 30 math pi 180 c2 gg c3 c3 150 moveTo c1 c2 gg c3 c3 150 c3 lineTo daxiao2 c4 math sin n 1 30 math pi 180 c1 daxiao1 math cos n 1 30 math pi 180 c2 gg c3 c3 150 下面 3 6 个点连接 moveTo daxiao2 c4 math sin n 5 30 math pi 180 c1 daxiao1 math cos n 5 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg moveTo daxiao2 c4 math sin n 5 30 math pi 180 c1 daxiao1 math cos n 5 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg moveTo daxiao2 c4 math sin n 9 30 math pi 180 c1 daxiao1 math cos n 9 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg moveTo daxiao2 c4 math sin n 9 30 math pi 180 c1 daxiao1 math cos n 9 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg moveTo daxiao2 c4 math sin n 1 30 math pi 180 c1 dax iao1 math cos n 1 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg moveTo daxiao2 c4 math sin n 1 30 math pi 180 c1 dax iao1 math cos n 1 30 math pi 180 c2 gg c3 c3 150 lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg 取上面的顶点 并连线 moveTo c1 c2 gg c3 c3 c3 lineTo daxiao2 c4 math sin n 210 math pi 180 c1 daxiao1 math cos n 210 math pi 180 c2 gg c3 c3 moveTo c1 c2 gg c3 c3 c3 lineTo daxiao2 c4 math sin n 330 math pi 180 c1 daxiao1 math cos n 330 math pi 180 c2 gg c3 c3 moveTo c1 c2 gg c3 c3 c3 lineTo daxiao2 c4 math sin n 1 90 math pi 180 c1 daxiao 1 math cos n 1 90 math pi 180 c2 gg c3 c3 中上面的 6 个点 但连线不一样 注意 moveTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math cos n 6 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg c3 moveTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg c3 lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg c3 上面 3 6 个点连接 moveTo daxiao2 c4 math sin n 90 math pi 180 c1 daxiao1 math cos n 90 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 1 60 math pi 180 c1 daxiao1 math cos n 1 60 math pi 180 c2 gg c3 moveTo daxiao2 c4 math sin n 90 math pi 180 c1 daxiao1 math cos n 90 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 2 60 math pi 180 c1 daxiao1 math cos n 2 60 math pi 180 c2 gg c3 moveTo daxiao2 c4 math sin n 210 math pi 180 c1 daxiao1 math cos n 210 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 3 60 math pi 180 c1 daxiao1 math cos n 3 60 math pi 180 c2 gg c3 moveTo daxiao2 c4 math sin n 210 math pi 180 c1 daxiao1 math cos n 210 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 4 60 math pi 180 c1 daxiao1 math cos n 4 60 math pi 180 c2 gg c3 moveTo daxiao2 c4 math sin n 330 math pi 180 c1 daxiao1 math cos n 330 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 5 60 math pi 180 c1 daxiao1 math cos n 5 60 math pi 180 c2 gg c3 moveTo daxiao2 c4 math sin n 330 math pi 180 c1 daxiao1 math cos n 330 math pi 180 c2 gg c3 c3 lineTo daxiao2 math sin n 6 60 math pi 180 c1 daxiao1 math co s n 6 60 math pi 180 c2 gg c3 n n sutu 在 FLASH 或 PHOTOSHOP 中能够很轻松的画出一个圆或者椭圆 怎样做一个作品 让用户可以直接在里 面拖动鼠标画出一个圆或者椭圆来呢 下面是 BreakDS 用 AS 实现这个效果的讲解 预览 一 基本定义 虽然说不说大家都清楚 但是我还是想讲一下 以免一些人忘得差不多了 圆 平面上到定点距离等于定长的点的轨迹 椭圆 平面上到两定点距离和等于定