【成图】
【代码】
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<head><title>维兰德汤谷Logo Draft2 连线法</title><style type="text/css">.centerlize{margin:0 auto;width:1200px;}</style></head><body onload="init();"><div class="centerlize"><canvas id="myCanvas" width="12px" height="12px" style="border:1px dotted black;">如果看到这段文字说您的浏览器尚不支持HTML5 Canvas，请更换浏览器再试.</canvas></div></body>
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<script type="text/javascript">
<!--
/*****************************************************************
* 将全体代码(从<!DOCTYPE到script>)拷贝下来，粘贴到文本编辑器中，
* 另存为.html文件，再用chrome浏览器打开，就能看到实现效果。
******************************************************************/// canvas的绘图环境
var ctx;// 高宽
const WIDTH=512;
const HEIGHT=512;// 舞台对象
var stage;//-------------------------------
// 初始化
//-------------------------------
function init(){// 获得canvas对象var canvas=document.getElementById('myCanvas'); canvas.width=WIDTH;canvas.height=HEIGHT;// 初始化canvas的绘图环境ctx=canvas.getContext('2d'); ctx.translate(WIDTH/2,HEIGHT/2);// 原点平移// 准备stage=new Stage(); stage.init();// 开幕animate();
}// 播放动画
function animate(){ stage.update(); stage.paintBg(ctx);stage.paintFg(ctx); // 循环if(true){//sleep(100);window.requestAnimationFrame(animate); }
}// 舞台类
function Stage(){// 初始化this.init=function(){}// 更新this.update=function(){ }// 画背景this.paintBg=function(ctx){ctx.clearRect(-WIDTH/2,-HEIGHT/2,WIDTH,HEIGHT);// 清屏 }// 画前景this.paintFg=function(ctx){// 底色ctx.save();ctx.fillStyle = "black";ctx.fillRect(-WIDTH/2,-HEIGHT/2,WIDTH,HEIGHT);ctx.restore();const R=220;//基准尺寸var ct=createPt(0,0);// ct=center// #1 W形ctx.save(); var r=R*1.00;var w=2*r;var h=w/4;var leftTop=createPt(-w/2,-h/2);var rightTop=createPt(+w/2,-h/2);var leftBottom=createPt(-w/2,+h/2);var rightBottom=createPt(+w/2,+h/2);var centerBottom=createPt(ct.x,+h/2);var centerTop=createPt(ct.x,-h/2);var a=leftTop;var b=createPt2(a.x,a.y,29/317*h,Math.PI/2);var c=createPt2(b.x,b.y,288*Math.sqrt(2)/317*h,Math.PI/4);var d=createPt2(c.x,c.y,136/317*h,0);var e=createPt2(d.x,d.y,192*Math.sqrt(2)/317*h,-Math.PI/4);var f=createPt2(e.x,e.y,192*Math.sqrt(2)/317*h,+Math.PI/4);var g=createPt2(f.x,f.y,136/317*h,0);var hh=createPt2(g.x,g.y,288*Math.sqrt(2)/317*h,-Math.PI/4);var i=createPt2(hh.x,hh.y,29/317*h,-Math.PI/2);var j=createPt2(i.x,i.y,175/317*h,Math.PI);var k=createPt2(j.x,j.y,192*Math.sqrt(2)/317*h,+Math.PI/4*3);var l=createPt2(k.x,k.y,192*Math.sqrt(2)/317*h,+Math.PI/4*5);var m=createPt2(l.x,l.y,116/317*h,Math.PI);var n=createPt2(m.x,m.y,192*Math.sqrt(2)/317*h,+Math.PI/4*3);var oo=createPt2(n.x,n.y,192*Math.sqrt(2)/317*h,+Math.PI/4*5);ctx.fillStyle="rgb(255,206,5)";ctx.beginPath();ctx.moveTo(a.x,a.y);ctx.lineTo(b.x,b.y);ctx.lineTo(c.x,c.y);ctx.lineTo(d.x,d.y);ctx.lineTo(e.x,e.y);ctx.lineTo(f.x,f.y);ctx.lineTo(g.x,g.y);ctx.lineTo(hh.x,hh.y);ctx.lineTo(i.x,i.y);ctx.lineTo(j.x,j.y);ctx.lineTo(k.x,k.y);ctx.lineTo(l.x,l.y);ctx.lineTo(m.x,m.y);ctx.lineTo(n.x,n.y);ctx.lineTo(oo.x,oo.y);ctx.closePath();ctx.fill();ctx.restore();// #2 楔形块ctx.save(); var center=createPt(d.x/2+f.x/2,d.y);// 下方var a=createPt2(center.x,center.y,97/317*h,0);var b=createPt2(a.x,a.y,22/317*h,-Math.PI/2);var c=createPt2(center.x,center.y,119/317*h,-Math.PI/2);var e=createPt2(center.x,center.y,97/317*h,Math.PI);var d=createPt2(e.x,e.y,22/317*h,-Math.PI/2);ctx.fillStyle="rgb(205,205,205)";ctx.beginPath();ctx.moveTo(a.x,a.y);ctx.lineTo(b.x,b.y);ctx.lineTo(c.x,c.y);ctx.lineTo(d.x,d.y);ctx.lineTo(e.x,e.y);ctx.closePath();ctx.fill();var center=createPt(oo.x/2+m.x/2,oo.y);// 左上方var a=createPt2(center.x,center.y,97/317*h,Math.PI);var b=createPt2(a.x,a.y,22/317*h,Math.PI/2);var c=createPt2(center.x,center.y,119/317*h,Math.PI/2);var e=createPt2(center.x,center.y,97/317*h,0);var d=createPt2(e.x,e.y,22/317*h,Math.PI/2);ctx.fillStyle="rgb(205,205,205)";ctx.beginPath();ctx.moveTo(a.x,a.y);ctx.lineTo(b.x,b.y);ctx.lineTo(c.x,c.y);ctx.lineTo(d.x,d.y);ctx.lineTo(e.x,e.y);ctx.closePath();ctx.fill();var center=createPt(l.x/2+j.x/2,l.y);// 右上方var a=createPt2(center.x,center.y,97/317*h,Math.PI);var b=createPt2(a.x,a.y,22/317*h,Math.PI/2);var c=createPt2(center.x,center.y,119/317*h,Math.PI/2);var e=createPt2(center.x,center.y,97/317*h,0);var d=createPt2(e.x,e.y,22/317*h,Math.PI/2);ctx.fillStyle="rgb(205,205,205)";ctx.beginPath();ctx.moveTo(a.x,a.y);ctx.lineTo(b.x,b.y);ctx.lineTo(c.x,c.y);ctx.lineTo(d.x,d.y);ctx.lineTo(e.x,e.y);ctx.closePath();ctx.fill();ctx.restore();// #3 文字ctx.save(); var r=R*1.00;ctx.save(); ctx.scale(1.01,0.6)writeText(ctx,0,-r*0.45,"WEYLAND-YUTANI CORP",r*0.18+"px Noto Sans SC","rgb(205,205,205)");ctx.restore();ctx.save(); ctx.scale(0.9,0.6)writeText(ctx,0,+r*0.57,"BUILDING BETTER WORLDS",r*0.12+"px Noto Sans SC","rgb(205,205,205)");ctx.restore();ctx.restore();writeText(ctx,WIDTH/2-30,HEIGHT/2-5,"逆火制图","8px consolas","lightgrey");// 版权}
}/*----------------------------------------------------------
基本函数:用于绘制实心圆
ctx:绘图上下文
x:矩形中心横坐标
y:矩形中心纵坐标
r:圆半径
style:填充圆的方案
----------------------------------------------------------*/
function drawSolidCircle(ctx,x,y,r,style){ctx.fillStyle=style;ctx.beginPath();ctx.arc(x,y,r,0,Math.PI*2,false);ctx.closePath();ctx.fill();
}/*----------------------------------------------------------
基本函数:用于绘制矩形
ctx:绘图上下文
x:矩形中心横坐标
y:矩形中心纵坐标
width:矩形宽
height:矩形高
----------------------------------------------------------*/
function drawRect(ctx,x,y,width,height){ctx.beginPath();ctx.moveTo(x-width/2,y-height/2);ctx.lineTo(x+width/2,y-height/2);ctx.lineTo(x+width/2,y+height/2);ctx.lineTo(x-width/2,y+height/2);ctx.closePath();
}/*----------------------------------------------------------
基本函数:创建一个二维坐标点
baseX:基准点横坐标
baseY:基准点纵坐标
radius:当前点到基准点的距离
theta:当前点到基准点的角度
Pt即Point
----------------------------------------------------------*/
function createPt2(baseX,baseY,radius,theta){var retval={};retval.x=baseX+radius*Math.cos(theta);retval.y=baseY+radius*Math.sin(theta);return retval;
}/*----------------------------------------------------------
基本函数:创建一个二维坐标点
x:横坐标
y:纵坐标
Pt即Point
----------------------------------------------------------*/
function createPt(x,y){var retval={};retval.x=x;retval.y=y;return retval;
}/*----------------------------------------------------------
基本函数:延时若干毫秒
milliseconds:毫秒数
----------------------------------------------------------*/
function sleep(milliSeconds) {const date = Date.now();let currDate = null;while (currDate - date < milliSeconds) {currDate = Date.now();}
}/*----------------------------------------------------------
基本函数:书写文字
ctx:绘图上下文
x:横坐标
y:纵坐标
text:文字
font:字体
color:颜色
----------------------------------------------------------*/
function writeText(ctx,x,y,text,font,color){ctx.save();ctx.textBaseline="bottom";ctx.textAlign="center";ctx.font = font;ctx.fillStyle=color;ctx.fillText(text,x,y);ctx.restore();
}/*-------------------------------------------------------------
维兰德汤谷，是开发异形的公司。
--------------------------------------------------------------*/
//-->
</script>END
