靜態變數，外面只要使用，病傳入正確參數即可
靜態變數，外面只要使用，病傳入正確參數即可
public static void vDrawLineGradient(System.Drawing.Graphics _G,//要用的Graphics
double _dLightPoint,//最亮點在區塊的比例
System.Drawing.Color _BaseColor,//基礎顏色
int _iStartAlpha,//顏色開始的Alpha值
int _iLightAlpha,//顏色最亮點的Alpha值
int _iDarkAlpha,//顏色最暗點的Alpha值
int _iAlphaLevel,//Aplha增量
int _iLineWidth,//同色寬度
System.Drawing.Rectangle _DrawRect)//繪圖區塊
{
if (_iLightAlpha < 0)
_iLightAlpha = 0;
if (_iDarkAlpha > 255)
_iDarkAlpha = 255;
if (_iStartAlpha < 0)
_iStartAlpha = 0;
if (_iStartAlpha > 255)
_iStartAlpha = 255;
for (int iMove = 0, iAlpha = _iStartAlpha; iMove < _DrawRect.Height; iMove += _iLineWidth)
{
_G.DrawLine(new System.Drawing.Pen(System.Drawing.Color.FromArgb(iAlpha, _BaseColor), _iLineWidth), _DrawRect.Left, _DrawRect.Top + iMove, _DrawRect.Right, _DrawRect.Top + iMove);
if (iMove < _DrawRect.Height * _dLightPoint)
{
iAlpha -= _iAlphaLevel;
if (iAlpha < _iLightAlpha)
iAlpha = _iLightAlpha;
}
else
{
iAlpha += _iAlphaLevel;
if (iAlpha > _iDarkAlpha)
iAlpha = _iDarkAlpha;
}
}
}