var canvas2D = {
canvas : undefined,
canvasContext : undefined,
x : undefined,
y : undefined,
w : undefined,
h : undefined,
color : undefined,
red : 50,
green : 50,
blue : 50
};
canvas2D.start = function()
{
canvas2D.canvas = document.getElementById("canvas");
canv
用户将为图形输入数据。我用了拉线,但是我找不到正确的位置。到目前为止,这是我的代码。我不能使用条形图库,因为java环境被嵌入到网页中。
// Ex5-1: Weather Data Graph
enter code herevar canvas;
canvas = openGraphics();
var sun;
var n;
var xposition;
xposition = 40;
sun = prompt("enter the sun");
sun = parseInt(sun, 10);
///xposition= xposition +10;
canvas.dr
我正在用Python编写一个程序,它使用图形来创建一个使用形状的房子。它在我的学校计算机上工作,但是当我试图在我的macbook上运行这个程序时,我得到了这个错误。
from graphics import GraphicsWindow
ImportError: cannot import name 'GraphicsWindow'
这是我的密码
from graphics import GraphicsWindow
# Create the graphics window named win
win = GraphicsWindow(400,400)
# Create a
我尝试获取滑块'red‘的值,如下所示:
red : $('#red').slider('value'),
但它不起作用。有人能告诉我为什么吗?我正在尝试创建一个使用jQuery滑块的颜色选择器。
var canvas2D = {
canvas : undefined,
canvasContext : undefined,
x : undefined,
y : undefined,
w : undefined,
h : undefined,
color : undefined,
red : $('#red
我在Windows和OS上运行这个示例来测试stipple,但结果不同。怎么一回事?
与
# semi-transparent-stipple-demo.py
# note: stipple only works for some objects (like rectangles)
# and not others (like ovals). But it's better than nothing...
from Tkinter import *
def redrawAll(canvas):
canvas.delete(ALL)
# draw a red rec