//c#的 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms;
namespace WindowsApplication1 { public partial class Form1 : Form { int x1, x2, y1, y2; Boolean ht = false;//判断是否按下鼠标左键，默认为没有按键 Boolean dr = true; //判断是否已经显示曲线，默认为显示 public Form1() { InitializeComponent();
CREATE PROCEDURE P_DrawSin ( @BeDegree decimal (10,2), @EdDegree decimal (10,2) ) AS SET NOCOUNT ON DECLARE @PAR VARCHAR(50) SET @PAR=CONVERT(VARCHAR,@BeDegree) IF (CONVERT(INT,@BeDegree)%10)<>0 BEGIN RAISERROR('"%s" 不是10的倍数,请录入10的倍数参数',12,16,@PAR) RETURN ENDSET @PAR=CONVERT(VARCHAR,@EdDegree) IF (CONVERT(INT,@EdDegree)%10)<>0 BEGIN RAISERROR('"%s" 不是10的倍数,请录入10的倍数参数',12,16,@PAR) RETURN END DECLARE @TB TABLE (ADegrees Decimal (10,2),ASine Decimal (10,2)) DECLARE @TC TABLE (ADegrees Decimal (10,2),ASine Decimal (10,2)) DECLARE @Sine Decimal (10,2),@Radians Decimal (10,2),@Degrees Decimal (10,2),@Tmp1 Decimal (10,2),@Tmp2 INT DECLARE @SQL VARCHAR(8000),@SQLTMP VARCHAR(8000),@RE VARCHAR(8000) SELECT @Radians = Radians(Convert(Float,@BeDegree)),@Degrees=@BeDegree WHILE (@Degrees<=@EdDegree) BEGIN SET @Sine=ROUND(SIN(@Radians)*10,0) INSERT INTO @TB SELECT @Degrees,@Sine SET @Degrees=@Degrees+10 SET @Radians= RADIANS(CONVERT(FLOAT,@Degrees)) ENDDECLARE SinCURSOR CURSOR READ_ONLY FOR SELECT ADegrees=MIN(ADegrees),ASine FROM @TB GROUP BY ASine ORDER BY ASine Desc OPEN SinCURSORFETCH NEXT FROM SinCURSOR INTO @Degrees,@Sine WHILE (@@FETCH_STATUS <> -1) BEGIN IF @Sine=0 SET @PAR='0' ELSE SET @PAR='*' SET @SQL='SPACE('+CONVERT(VARCHAR(10),CEILING(@Degrees-@BeDegree))+'/10)+'''+@PAR+'''' IF EXISTS (SELECT 1 FROM @TB WHERE ADegrees<>@Degrees AND ASine=@Sine) BEGIN DELETE @TC INSERT INTO @TC SELECT ADegrees,@Sine FROM @TB WHERE ASine=@Sine ORDER BY ADegrees SELECT @Tmp1=NULL,@Tmp2=NULL UPDATE @TC SET @Tmp1=@Tmp2, @Tmp2=ADegrees, @SQLTMP=ISNULL(@SQLTMP,'')+'+SPACE('+CONVERT(VARCHAR(10),(ABS(ADegrees-@Tmp1)/10)-1)++')+'''+@PAR+'''' WHERE ASine=@Sine END SELECT @RE=CASE WHEN @RE IS NULL THEN '' ELSE @RE+'+CHAR(10)+CHAR(13)+' END + @SQL+ISNULL(@SQLTMP,'') SET @SQL='' SET @SQLTMP='' FETCH NEXT FROM SinCURSOR INTO @Degrees,@Sine END CLOSE SinCURSOR DEALLOCATE SinCURSOR EXEC ('PRINT '+@RE) SET NOCOUNT OFF --测试 exec dbo.P_DrawSin 0,1800/* *** *** ** ** ** ** * * * * * * * * * * * * * * * * * * * * 0 0 0 0 0 * * * * * * * * * * * * * * * * * * * * ** ** ** ** *** *** */
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
int x1, x2, y1, y2;
Boolean ht = false;//判断是否按下鼠标左键，默认为没有按键
Boolean dr = true; //判断是否已经显示曲线，默认为显示
public Form1()
{
InitializeComponent();
}
/// <summary>
/// 鼠标单击事件方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
//sinline();
x1 = e.X; //获取点击处的坐标X值
y1 = e.Y; //获取点击处的坐标Y值
ht = true; //赋值为真，证明已经按下左键
if (dr == true) //判断显示曲线的条件是否为真，如果为真则清楚鼠标所画的各种图形
{
Graphics g = this.CreateGraphics();
g.Clear(this.BackColor);
dr = false;
}
}
/// <summary>
/// 正弦曲线方法
/// </summary>
public void sinline()
{
int W = this.ClientSize.Width; //获取窗体宽度
int H = this.ClientSize.Height; //获取窗体高度
int x0 = 10; //原点坐标X
int y0 = H / 2; //原点坐标Y
int Yuint = H / 10; //去窗体高度的1/10
int Xuint = W / 50;//在X轴上分为50份，每份为pi/10，用于计算Y值
int x1 = 0, y1 = 0; //画图起点坐标
int x2 = 0, y2 = 0; //画图终点坐标
Graphics g = this.CreateGraphics();
Pen mypen = new Pen(Color.Red, 3);
bool Startbool = true; //用于判断是否为原点
g.DrawLine(mypen, x0, y0, W, y0); //画X轴
g.DrawLine(mypen, x0, H, x0, 0); //画Y轴
/*画X轴箭头*/
g.DrawLine(mypen, W, y0, W - 10, y0 - 5);
g.DrawLine(mypen, W, y0, W - 10, y0 + 5);
/*画y轴箭头*/
g.DrawLine(mypen, x0, 0, x0 - 5, 10);
g.DrawLine(mypen, x0, 0, x0 + 5, 10);
for (int i = 0; i <= 50; i++)
{
if (Startbool == true)
{
//x1=10;
x1 = 10 + i * Xuint;
y1 = (int)(y0-Yuint * Math.Sin(i * 36.0 / 360 * 3.1415926));
Startbool = false;
}
else
{
x2 = 10 + i * Xuint; //计算终点坐标X
y2 = (int)(y0 - Yuint * Math.Sin(i * 36.0 / 180) * 3.1415926); //计算终点坐标Y
g.DrawLine(mypen, x1, y1, x2, y2);
x1 = x2;
y1 = y2;
}
}
}
/// <summary>
/// 鼠标移动事件，用于画图时获取各点坐标
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
x2 = e.X; //获取实时坐标X
y2 = e.Y; //获取实时坐标Y
Graphics g = this.CreateGraphics();
Pen mypen = new Pen(Color.Blue, 3);
if (ht == true) //判断是否按下左键
{
g.DrawLine(mypen, x1, y1, x2, y2);
x1 = x2;
y1 = y2;
}
}
/// <summary>
/// 鼠标释放事件方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
ht = false;
}
/// <summary>
/// 键盘事件方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyValue == 13) //根据键值判断是否按下回车
{
Graphics g = this.CreateGraphics();
g.Clear(this.BackColor);
sinline();
dr = true;
}
}
}
}
我很强.谢谢。
declare @tb table(y float)set @x = 0while @x < 360
begin
insert into @tb select ROUND(SIN(RADIANS(@x)) * 100,0)
set @x = @x + 5
end
select space(201 + y - 100 )+ '*' from @tb
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CREATE PROCEDURE P_DrawSin
(
@BeDegree decimal (10,2),
@EdDegree decimal (10,2)
)
AS
SET NOCOUNT ON
DECLARE @PAR VARCHAR(50)
SET @PAR=CONVERT(VARCHAR,@BeDegree)
IF (CONVERT(INT,@BeDegree)%10)<>0
BEGIN
RAISERROR('"%s" 不是10的倍数,请录入10的倍数参数',12,16,@PAR)
RETURN
ENDSET @PAR=CONVERT(VARCHAR,@EdDegree)
IF (CONVERT(INT,@EdDegree)%10)<>0
BEGIN
RAISERROR('"%s" 不是10的倍数,请录入10的倍数参数',12,16,@PAR)
RETURN
END
DECLARE @TB TABLE (ADegrees Decimal (10,2),ASine Decimal (10,2))
DECLARE @TC TABLE (ADegrees Decimal (10,2),ASine Decimal (10,2))
DECLARE @Sine Decimal (10,2),@Radians Decimal (10,2),@Degrees Decimal (10,2),@Tmp1 Decimal (10,2),@Tmp2 INT
DECLARE @SQL VARCHAR(8000),@SQLTMP VARCHAR(8000),@RE VARCHAR(8000)
SELECT @Radians = Radians(Convert(Float,@BeDegree)),@Degrees=@BeDegree
WHILE (@Degrees<=@EdDegree)
BEGIN
SET @Sine=ROUND(SIN(@Radians)*10,0)
INSERT INTO @TB SELECT @Degrees,@Sine
SET @Degrees=@Degrees+10
SET @Radians= RADIANS(CONVERT(FLOAT,@Degrees))
ENDDECLARE SinCURSOR CURSOR READ_ONLY FOR
SELECT ADegrees=MIN(ADegrees),ASine FROM @TB GROUP BY ASine ORDER BY ASine Desc
OPEN SinCURSORFETCH NEXT FROM SinCURSOR INTO @Degrees,@Sine
WHILE (@@FETCH_STATUS <> -1)
BEGIN
IF @Sine=0
SET @PAR='0'
ELSE
SET @PAR='*'
SET @SQL='SPACE('+CONVERT(VARCHAR(10),CEILING(@Degrees-@BeDegree))+'/10)+'''+@PAR+''''
IF EXISTS (SELECT 1 FROM @TB WHERE ADegrees<>@Degrees AND ASine=@Sine)
BEGIN
DELETE @TC
INSERT INTO @TC SELECT ADegrees,@Sine FROM @TB WHERE ASine=@Sine ORDER BY ADegrees
SELECT @Tmp1=NULL,@Tmp2=NULL
UPDATE @TC
SET @Tmp1=@Tmp2,
@Tmp2=ADegrees,
@SQLTMP=ISNULL(@SQLTMP,'')+'+SPACE('+CONVERT(VARCHAR(10),(ABS(ADegrees-@Tmp1)/10)-1)++')+'''+@PAR+''''
WHERE ASine=@Sine
END
SELECT @RE=CASE WHEN @RE IS NULL THEN '' ELSE @RE+'+CHAR(10)+CHAR(13)+' END + @SQL+ISNULL(@SQLTMP,'')
SET @SQL=''
SET @SQLTMP=''
FETCH NEXT FROM SinCURSOR INTO @Degrees,@Sine
END
CLOSE SinCURSOR
DEALLOCATE SinCURSOR
EXEC ('PRINT '+@RE)
SET NOCOUNT OFF
--测试
exec dbo.P_DrawSin 0,1800/* *** ***
** ** ** **
* * * *
* * * *
* * * *
* * * *
* * * *
0 0 0 0 0
* * * *
* * * *
* * * *
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* * * *
** ** ** **
*** ***
*/
/*
*** ***
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0 0 0 0 0
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** ** ** **
*** ****/