nmLog

Flashでフニャフニャの円を描く。

ネットでいろいろ調べた結果ほぼ思い通りにベジェ曲線が描けるようになったのでまとめておく。

package {
	
	import flash.display.*;

	public class NMain extends MovieClip {
		
		//-------------------------------------------------------------------------------- Properties
		
		private var _this:*;
		private var _stage:Stage;
		
		
		
		//-------------------------------------------------------------------------------- Constractor
		
		public function NMain() {
			
			_this = this;
			_stage = stage;
			
			_stage.scaleMode = StageScaleMode.NO_SCALE;
			_stage.align = StageAlign.TOP_LEFT;		
			
			Init();
		}
		
		
		//-------------------------------------------------------------------------------- Function
		 
		/**
		 * Init
		 */
		public function Init():void {

			var args = {};
			
			args.anchorlength = 5;
			args.radius = 100;
			args.irregular = .5;
			args.linesize = 1;
			args.linealpha = .1;
			args.fillalpha = 0;
			args.linecolor = 0x000000;
			args.fillcolor = args.linecolor;
			args.roundval = 80;
			args.irregular_ap = 100;
			args.irregular_cp = 60;
			
			var irrcircle = new NM_Irregularcircle();

			irrcircle.Init(args);
			
			irrcircle.x = Math.round(_stage.stageWidth / 2);
			irrcircle.y = Math.round(_stage.stageHeight / 2);
			
			_stage.addChild(irrcircle);
		}
	}
}



package {
	
	import flash.display.*;
	import flash.geom.*;
	import flash.events.*;
	import fl.motion.BezierSegment;
	
	class NM_Irregularcircle extends MovieClip {
		
		//-------------------------------------------------------------------------------- Properties
		
		private var _this:MovieClip;
		
		private var anchorlength:int;		
		private var radius:Number;
		private var irregular:Number;
		private var linecolor:Number;
		private var fillcolor:Number;
		private var linealpha:Number;
		private var fillalpha:Number;
		private var linesize:Number;
		private var roundval:Number;
		private var irregular_ap:Number;
		private var irregular_cp:Number;
	
		
		//-------------------------------------------------------------------------------- Constractor
		
		public function NM_Irregularcircle() {
				
			_this = this;
		}
		
		
		//-------------------------------------------------------------------------------- Function
		
		/**
		 * Init
		 */
		public function Init(args:Object):void {
			
			anchorlength = args.anchorlength;
			irregular = args.irregular;		
			linesize = args.linesize;
			linecolor = args.linecolor;
			linealpha = args.linealpha;
			fillcolor = args.fillcolor;
			fillalpha = args.fillalpha;		
			radius = args.radius;
			roundval = args.roundval;
			irregular_ap = args.irregular_ap;
			irregular_cp = args.irregular_cp;
			
			setpoints();
	
			drawirrcircle();
		}
		
	
		/**
		 * points
		 */		
		private function setpoints() {
			
			var angle = 360 / anchorlength;
		
			for (var i:Number = 0; i < anchorlength; i++) {
	
				var radian = (i * angle + 90) / 180 * Math.PI
				
				var irr_ap = irregular_ap * Math.random();
				var irr_cp = irregular_cp - irregular_cp * 2 * Math.random();
				
				var tgtradius = radius + irr_ap;
				
				var p_a = dot_a();	
				var p_l = dot_b();	
				var p_r = dot_c();
				
				p_a.name = (i + 1) + "_a";
				var a_mat = p_a.transform.matrix;
				a_mat.translate(tgtradius, 0);				
				a_mat.rotate(radian);			
				p_a.transform.matrix = a_mat;
	
					
				p_l.name = (i + 1) + "_l";
				var l_mat:Matrix = new Matrix();
				l_mat.translate(0, roundval);
				l_mat.rotate(irr_cp / 180 * Math.PI);
				l_mat.translate(tgtradius, 0);				
				l_mat.rotate(radian);	
				p_l.transform.matrix = l_mat;
				
					
				p_r.name = (i + 1) + "_r";
				var r_mat:Matrix = new Matrix();
				r_mat.translate(0, -roundval);
				r_mat.rotate(irr_cp / 180 * Math.PI);
				r_mat.translate(tgtradius, 0);				
				r_mat.rotate(radian);
				p_r.transform.matrix = r_mat;			
	
							
				_this.addChild(p_a);
				_this.addChild(p_l);
				_this.addChild(p_r);	
			}
		}
	
		/**
		 * draw
		 */	
		private function drawirrcircle() {
			
			_this.graphics.clear();			
			_this.graphics.beginFill(fillcolor, fillalpha);
			_this.graphics.lineStyle(linesize, linecolor, linealpha);
			
			var startap = _this.getChildByName("1_a");
			_this.graphics.moveTo(startap.x, startap.y);
		
			var separate = 4;
			var sep = 1 / separate;
		
			for (var i:int = 0; i < anchorlength; i++) {
				
				var pid = i + 1;
				var nextpid = i + 2;
				if(nextpid > anchorlength) nextpid = 1;
				
				var obj_ap_1 = _this.getChildByName(pid + "_a");
				var ap_1 = new Point(obj_ap_1.x, obj_ap_1.y);
				
				var obj_cp_1 = _this.getChildByName(pid + "_l");
				var cp_1 = new Point(obj_cp_1.x, obj_cp_1.y);
	
				var obj_cp_2 = _this.getChildByName(nextpid + "_r");
				var cp_2 = new Point(obj_cp_2.x, obj_cp_2.y);
				
				var obj_ap_2 = _this.getChildByName(nextpid + "_a");
				var ap_2 = new Point(obj_ap_2.x, obj_ap_2.y);
				
				var bzseg = new BezierSegment(ap_1, cp_1, cp_2, ap_2);
	
				
				for(var t = (sep * 2); t <= 1; t += (sep * 2)) {
					
					var a1 = bzseg.getValue(t - sep * 2);				
					var a2 = bzseg.getValue(t - sep);				
					var a3 = bzseg.getValue(t);			
					
					var cp = new Point(2 * a2.x - (a1.x + a3.x) * .5, 2 * a2.y - (a1.y + a3.y) * .5);
					
					_this.graphics.curveTo(cp.x, cp.y, a3.x, a3.y);
				}
			}
			
			_this.graphics.endFill();
		}
	
		/**
		 * dot
		 */
		//
		private function dot_a():MovieClip {
			
			var size = 16;			
			var dot_mc = new MovieClip();			
			dot_mc.graphics.beginFill(0x000000);
			dot_mc.graphics.drawRect(-size / 2, -size / 2, size, size);
			dot_mc.graphics.endFill();
			
			dot_mc.addEventListener(MouseEvent.CLICK, function(){trace(dot_mc.name +" x:" + dot_mc.x +", y:"+ dot_mc.y);});
			
			return dot_mc;
		}
		//
		private function dot_b():MovieClip {
			
			var size = 10;			
			var dot_mc = new MovieClip();			
			dot_mc.graphics.beginFill(0xFF00FF);
			dot_mc.graphics.drawRect(-size / 2, -size / 2, size, size);
			dot_mc.graphics.endFill();
			
			dot_mc.addEventListener(MouseEvent.CLICK, function(){trace(dot_mc.name +" x:" + dot_mc.x +", y:"+ dot_mc.y);});
			
			return dot_mc;
		}
		//
		private function dot_c():MovieClip {
			
			var size = 10;			
			var dot_mc = new MovieClip();			
			dot_mc.graphics.beginFill(0x00FFFF);
			dot_mc.graphics.drawRect(-size / 2, -size / 2, size, size);
			dot_mc.graphics.endFill();
			
			dot_mc.addEventListener(MouseEvent.CLICK, function(){trace(dot_mc.name +" x:" + dot_mc.x +", y:"+ dot_mc.y);});
			
			return dot_mc;
		}
		
	
	}
	
}