/// <summary>
/// 为特定的三维图形类型创建颜色映射
/// </summary>
/// <param name="cs"></param>
/// <param name="pt"></param>
/// <param name="zmin"></param>
/// <param name="zmax"></param>
/// <returns></returns>
private Color AddColor(ChartStyle cs, Point3 pt,
float zmin, float zmax)
{
int colorLength = CMap.GetLength(0);
int cindex = (int)Math.Round((colorLength * (pt.Z - zmin) +
(zmax - pt.Z)) / (zmax - zmin));
if (cindex < 1)
{
cindex = 1;
}
if (cindex > colorLength)
{
cindex = colorLength;
}
Color color = Color.FromArgb(CMap[cindex - 1, 0],
CMap[cindex - 1, 1], CMap[cindex - 1, 2],
CMap[cindex - 1, 3]);
return(color);
}