<canvas id = "myCanvas" width = '500' height = '500'> Canvas画正多边形 </canvas><script> var myCanvas = document.getElementById("myCanvas"); var context = myCanvas.getContext("2d"); function drawPath(x, y, n, r)
1.首先说一下canvas类: Class Overview The Canvas class holds the "draw" calls. To draw something, you need 4 basic components: A Bitmap to hold the pixels, a Canvas to host the draw calls (writing into the bitmap), a drawing primitive (e.g. Rect, Path,
pylab 提供了比较强大的画图功能,但是函数和参数都比较多,很容易搞混.我们平常使用最多的应该是画线了.下面,简单的对一些常用的划线函数进行了封装,方便使用. # -*- coding: utf-8 -*- import pylab import random class MiniPlotTool : ''' A mini tool to draw lines using pylab ''' basecolors = ['red','green','yellow','blue','black'
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Typ
引自:http://blog.csdn.net/carlfan/article/details/8139984 1.首先说一下canvas类: Class Overview The Canvas class holds the "draw" calls. To draw something, you need 4 basic components: A Bitmap to hold the pixels, a Canvas to host the draw calls (writing