1樓：濮冰楓
我貼上的， 對於多邊形面積就不知道怎麼算了
下面是**：
新建乙個txt文件，複製下面**儲存為.frm 就可以使用了
version 5.00
begin vb.form frmdraw
caption = "form1"
clientheight = 10425
clientleft = 120
clienttop = 450
clientwidth = 13260
linktopic = "form1"
scaleheight = 10425
scalewidth = 13260
startupposition = 3 '視窗預設
begin vb.commandbutton command1
caption = "清除影象"
height = 615
left = 1320
tabindex = 10
top = 120
width = 1455
endbegin vb.textbox tjg
height = 270
left = 2280
tabindex = 9
text = "1"
top = 1080
width = 495
endbegin vb.textbox tjs
height = 270
left = 1800
tabindex = 8
text = "5"
top = 1080
width = 495
endbegin vb.optionbutton option1
caption = "正多角形"
height = 255
index = 4
left = 120
tabindex = 6
top = 1080
width = 1095
endbegin vb.textbox tbs
height = 270
left = 1800
tabindex = 4
text = "3"
top = 840
width = 495
endbegin vb.optionbutton option1
caption = "正多邊形"
height = 255
index = 3
left = 120
tabindex = 3
top = 840
width = 1095
endbegin vb.optionbutton option1
caption = "五邊形"
height = 255
index = 2
left = 120
tabindex = 2
top = 600
width = 1095
endbegin vb.optionbutton option1
caption = "五角星"
height = 255
index = 1
left = 120
tabindex = 1
top = 360
width = 1095
endbegin vb.optionbutton option1
caption = "正三角形"
height = 255
index = 0
left = 120
tabindex = 0
top = 120
width = 1095
endbegin vb.label label2
caption = "角數:"
height = 255
left = 1320
tabindex = 7
top = 1080
width = 495
endbegin vb.label label1
caption = "邊數:"
height = 255
left = 1320
tabindex = 5
top = 840
width = 495
endend
attribute vb_name = "frmdraw"
attribute vb_globalnamespace = false
attribute vb_creatable = false
attribute vb_predeclaredid = true
attribute vb_exposed = false
option explicit
dim mx as long
dim my as long
dim nx as long
dim ny as long
dim num1 as double
dim num2 as double
dim num3 as double
dim oidx as long
private sub draw(byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long, byval clr as long)
on error resume next
select case oidx
case 0
drawdbx x1, y1, x2, y2, clr, 3
case 1
draww x1, y1, x2, y2, clr
case 2
drawdbx x1, y1, x2, y2, clr, 5
case 3
dim bs as long
bs = val(tbs.text)
if bs >= 3 then drawdbx x1, y1, x2, y2, clr, bs
case 4
dim js as long
dim jg as long
js = val(tjs.text)
jg = val(tjg.text)
if js mod 2 <> 1 then js = js + 1
tjs.text = js
if jg < 1 then jg = 1
if jg > js - 4 then jg = js - 4
if jg mod 2 <> 1 then jg = jg - 1
if js mod jg = 0 then jg = 1
tjg.text = jg
if js >= 5 and js mod 2 = 1 then drawdjx x1, y1, x2, y2, clr, js, jg
end select
end sub
private sub draww(byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long, byval clr as long)
dim x3 as long
dim y3 as long
dim x4 as long
dim y4 as long
dim x5 as long
dim y5 as long
getxy x3, y3, x1, y1, x2, y2
getxy x4, y4, x2, y2, x3, y3
getxy x5, y5, x3, y3, x4, y4
me.line (x1, y1)-(x2, y2), clr
me.line -(x3, y3), clr
me.line -(x4, y4), clr
me.line -(x5, y5), clr
me.line -(x1, y1), clr
end sub
private sub drawdbx(byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long, byval clr as long, optional byval bs as long = 3)
if bs < 3 then exit sub
dim x() as long
dim y() as long
dim i as long
redim x(bs - 3)
redim y(bs - 3)
dim du as double
du = (bs - 2) * 180 / bs
me.line (x1, y1)-(x2, y2), clr
getxy x(0), y(0), x1, y1, x2, y2, du
me.line -(x(0), y(0)), clr
if bs > 3 then
getxy x(1), y(1), x2, y2, x(0), y(0), du
me.line -(x(1), y(1)), clr
if bs > 4 then
for i = 2 to bs - 3
getxy x(i), y(i), x(i - 2), y(i - 2), x(i - 1), y(i - 1), du
me.line -(x(i), y(i)), clr
next
end if
end if
me.line -(x1, y1), clr
end sub
private sub drawdjx(byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long, byval clr as long, optional byval js as long = 5, optional byval jg as long = 1)
if js < 5 then exit sub
if js mod 2 <> 1 then exit sub
dim x() as long
dim y() as long
dim i as long
redim x(js - 3)
redim y(js - 3)
dim du as double
du = jg * 180 / js
me.line (x1, y1)-(x2, y2), clr
getxy x(0), y(0), x1, y1, x2, y2, du
me.line -(x(0), y(0)), clr
if js > 3 then
getxy x(1), y(1), x2, y2, x(0), y(0), du
me.line -(x(1), y(1)), clr
if js > 4 then
for i = 2 to js - 3
getxy x(i), y(i), x(i - 2), y(i - 2), x(i - 1), y(i - 1), du
me.line -(x(i), y(i)), clr
next
end if
end if
me.line -(x1, y1), clr
end sub
private sub getxy(byref x as long, byref y as long, byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long, optional byval sdu as double = 0)
dim ln as long
dim du as double
dim ys as long
dim ssdu as double
if sdu = 0 then ssdu = num3 else ssdu = sdu / num2
ys = iif(y2 > y1, -1, 1)
if y1 = y2 then
x = x2 + (x1 - x2) * cos(ssdu)
y = y2 - (x1 - x2) * sin(ssdu)
else
ln = sqr((x1 - x2) ^ 2 + (y1 - y2) ^ 2)
du = atn((x2 - x1) / (y2 - y1))
x = x2 + sin(ssdu + du) * ln * ys
y = y2 + cos(ssdu + du) * ln * ys
end if
end sub
private sub command1_click()
me.cls
end sub
private sub form_load()
num1 = sqr(3) / 2
num2 = 180 / 3.14159265
num3 = 36 / num2
option1_click 0
end sub
private sub form_mousedown(button as integer, shift as integer, x as single, y as single)
if button <> 1 then exit sub
mx = x
my = y
nx = x
ny = y
me.drawwidth = 2
me.drawmode = 7
'line (nx, ny)-(mx, my), rgb(255, 255, 255)
draw mx, my, nx, ny, rgb(255, 255, 255)
end sub
private sub form_mousemove(button as integer, shift as integer, x as single, y as single)
if button <> 1 then exit sub
me.drawwidth = 2
me.drawmode = 7
if int(x) <> nx or int(y) <> ny then
'line (nx, ny)-(mx, my), rgb(255, 255, 255)
draw mx, my, nx, ny, rgb(255, 255, 255)
nx = x
ny = y
draw mx, my, nx, ny, rgb(255, 255, 255)
'line (nx, ny)-(mx, my), rgb(255, 255, 255)
end if
end sub
private sub form_mouseup(button as integer, shift as integer, x as single, y as single)
if button <> 1 then exit sub
me.drawwidth = 2
me.drawmode = 7
draw mx, my, nx, ny, rgb(255, 255, 255)
'line (nx, ny)-(mx, my), rgb(255, 255, 255)
me.drawmode = 13
draw mx, my, x, y, rgb(255, 0, 0)
end sub
private sub option1_click(index as integer)
oidx = index
end sub
vb怎麼畫多邊形，輸入座標，畫出這些點圍起來的圖形，怎麼做啊
看看這個應該可以 line 方法 在物件上畫直線和矩形。語法object.line step x1,1 step x2,y2 color b f line 方法的語法有以下物件限定符和部分 部分 描述 object 可選的。物件表示式，其值為 應用於 列表中的物件。如果object 省略，具有焦點 ...
圓和正多邊形，圓是不是多邊形
是道好題！和我以前做過的一道高中的奧數題類似，具體記不到了，但是，我可以明確告訴你，最後的那個圓與它外面的那個正n變形幾乎全等。解題思路 首先，要明確剛才我說的那一點。其次，要找出圓心與各多邊形的邊的距離規律，以及圓心與各圓之間距離的規律，請相信，一定有規律可找的，不是這道題就解不出來了！再次，設最...
多邊形面積公式，正多邊形的面積公式是什麼？
多邊形是沒有具體的計算公式的，只能把它分解成幾個常見的圖形 如正方形 長方形 梯形等 然後各個計算而已！正多邊形內角計算公式與半徑無關 要已知正多邊形邊數為n 內角和 180 n 2 半徑為r 圓的內接三角形面積公式 3倍根號3 除以4再乘以r方 外切三角形面積公式 3倍根號3 r方外切正方形 4r...
多邊形建模的精髓是什麼，多邊形建模的簡介
想要系統的學習可以考慮報乙個網路直播課，推薦cgwang的網路課。老師講得細，上完還可以回看，還有同型別錄播課可以免費學 贈送終身vip 自製能力相對較弱的話，建議還是去好點的培訓機構，實力和規模在國內排名前幾的大機構，推薦行業龍頭 王氏教育。王氏教育全國直營校區面授課程試聽 複製後面鏈結在瀏覽器也...
多邊形怎麼求面積，多邊形的面積計算公式
多邊形是沒有具體的計算公式的，只能把它分解成幾個常見的圖形 如正方形 長方形 梯形等 然後各個計算而已！正多邊形內角計算公式與半徑無關 要已知正多邊形邊數為n 內角和 180 n 2 半徑為r 圓的內接三角形面積公式 3倍根號3 除以4再乘以r方 外切三角形面積公式 3倍根號3 r方 外切正方形 4...