相关疑难解决方法(0)

我使用下面的代码:

<script type='text/javascript'>//<![CDATA[ 
window.onload=function(){
/// (c) Ken Fyrstenberg Nilsen, Abidas Software .com
/// License: CC-Attribute

var ctx = demo.getContext('2d'),
    font = '64px impact',
    w = demo.width,
    h = demo.height,
    curve,
    offsetY,
    bottom,
    textHeight,
    angleSteps = 255/h,
    i = h,
    y,
    os = document.createElement('canvas'),
    octx = os.getContext('2d');

os.width = w;
os.height = h;
octx.font = font;
octx.textBaseline = 'top';
octx.textAlign = 'center';

function renderBridgeText() {
    curve = parseInt(iCurve.value, 10);
    offsetY = parseInt(iOffset.value, 10);
    textHeight = parseInt(iHeight.value, 10);
    bottom = parseInt(iBottom.value, 10); …