解释【编程画圆】的原理 尤其关于使用余弦正弦,x0 = 200 :y0 = 200l = 20r = 100 Don = 0While n < 3.1415926 * 2x = x0 + r * cos(n)y = y0 - r * sin(n)MoveTo x,yDelay 10 n = n + l / rWend Loop语法我清楚,每个变量我也清楚.主
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 22:14:54
![解释【编程画圆】的原理 尤其关于使用余弦正弦,x0 = 200 :y0 = 200l = 20r = 100 Don = 0While n < 3.1415926 * 2x = x0 + r * cos(n)y = y0 - r * sin(n)MoveTo x,yDelay 10 n = n + l / rWend Loop语法我清楚,每个变量我也清楚.主](/uploads/image/z/4947107-59-7.jpg?t=%E8%A7%A3%E9%87%8A%E3%80%90%E7%BC%96%E7%A8%8B%E7%94%BB%E5%9C%86%E3%80%91%E7%9A%84%E5%8E%9F%E7%90%86+%E5%B0%A4%E5%85%B6%E5%85%B3%E4%BA%8E%E4%BD%BF%E7%94%A8%E4%BD%99%E5%BC%A6%E6%AD%A3%E5%BC%A6%2Cx0+%3D+200+%3Ay0+%3D+200l+%3D+20r+%3D+100+Don+%3D+0While+n+%3C+3.1415926+%2A+2x+%3D+x0+%2B+r+%2A+cos%28n%29y+%3D+y0+-+r+%2A+sin%28n%29MoveTo+x%2CyDelay+10+n+%3D+n+%2B+l+%2F+rWend+Loop%E8%AF%AD%E6%B3%95%E6%88%91%E6%B8%85%E6%A5%9A%2C%E6%AF%8F%E4%B8%AA%E5%8F%98%E9%87%8F%E6%88%91%E4%B9%9F%E6%B8%85%E6%A5%9A.%E4%B8%BB)
解释【编程画圆】的原理 尤其关于使用余弦正弦,x0 = 200 :y0 = 200l = 20r = 100 Don = 0While n < 3.1415926 * 2x = x0 + r * cos(n)y = y0 - r * sin(n)MoveTo x,yDelay 10 n = n + l / rWend Loop语法我清楚,每个变量我也清楚.主
解释【编程画圆】的原理 尤其关于使用余弦正弦,
x0 = 200 :y0 = 200
l = 20
r = 100
Do
n = 0
While n < 3.1415926 * 2
x = x0 + r * cos(n)
y = y0 - r * sin(n)
MoveTo x,y
Delay 10
n = n + l / r
Wend
Loop
语法我清楚,每个变量我也清楚.主要是画圆的原理和思想,正弦余弦是怎样通过变量的控制画出圆的?
解释【编程画圆】的原理 尤其关于使用余弦正弦,x0 = 200 :y0 = 200l = 20r = 100 Don = 0While n < 3.1415926 * 2x = x0 + r * cos(n)y = y0 - r * sin(n)MoveTo x,yDelay 10 n = n + l / rWend Loop语法我清楚,每个变量我也清楚.主
设定圆心点的坐标(x0,y0)为(200,200)
设定每10ms移动的弧长l=20 弧长l=每10ms移动的弧度n0*半径r
设定圆的半径r=100
Do
n=0
n为从0度开始的转动的弧度
while n<2π n单位为弧度,<2π即<360°未画满一周时
作图点坐标设定为(x,y)
横坐标x=圆心横坐标x0+半径r*cos(n)
纵坐标y=圆心纵坐标y0-半径r*sin(n) 此处y=y0 - r * sin(n),所以此程序沿顺时针转动作圆
移动到坐标点(x,y)
delay 10ms
n=n+l/r,即n=n+n0*r/r n=n+n0 根据l值大小转动n的弧度
wend
loop