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html5 canvas 径向渐变2

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html5 canvas 径向渐变

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HTML5 Canvas ( 径向渐变, 升级版的星空 ) fillStyle, createRadialGradient

<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>canvas</title> <script type="text/javascript" src="../js/jQuery.js"></script> <style type="text/css">…

html5 canvas 填充渐变形状

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canvas径向渐变详解

创建径向渐变步骤如下: 1,创建径向渐变对象 createRadialGradient(x0,y0,r0,x1,y1,r1),其中x0,y0,r0分别为起始圆的位置坐标和半径,x1,y1,r1为终止圆的坐标和半径. 2,设置渐变颜色 addColorStop(position,color),position为从0.0~1.0之间的值,表示渐变的相对位置:color是一个有效的css颜色值. 3,设置画笔颜色为该径向渐变对象. 4,画图.   例: var c = document.getElem…

html5 canvas 对角线渐变

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html5 canvas 垂直渐变描边

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html5 canvas 水平渐变描边

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HTML5 Canvas ( 线性渐变, 升级版的星空 ) fillStyle, createLinearGradient, addColorStop

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html5 canvas图片渐变

<!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> <script> window.onload = function () { var oc = document.getElementById('c1'); var ogc = oc.getContext('2d'); var yimg = new Imag…