public static string CreateBMP(List <PointValue> pointValueList, string imagePath, double tempMax, double tempMin)
{
int r = 0, c = 0;
double x, y, preX = 0, preY = 0;
int insertPoint = 1;
bool needInsertPoint = true;
if (pointValueList.Count < 1000)
{
insertPoint = 100;
}
else if (pointValueList.Count < 10000)
{
insertPoint = 10;
}
else if (pointValueList.Count < 100000)
{
insertPoint = 10;
}
else
{
insertPoint = 0;
needInsertPoint = false;
}
//int insertPoint = 1;
int afterInterpR = 1; //还未初始化// r + (r - 1) * insertPoint;
int afterInterpC = 1; //还未初始化 c + (c - 1) * insertPoint;
HSL[,] hslArray = null;
RgbColor[,] rgbArray = null;
bool flagY = false;
try
{
for (int it = 0; it < pointValueList.Count; ++it)//对结果点进行遍历
{
if (it == 0)
{
preX = pointValueList[it].x;
preY = pointValueList[it].y;
c = 1; r = 1;
continue;
}
x = pointValueList[it].x;
y = pointValueList[it].y;
if (y == preY && !flagY)
{
++c;
}
else
{
flagY = true;
}
if (x == preX)
{
++r;
}
}
afterInterpR = r + (r - 1) * insertPoint;
afterInterpC = c + (c - 1) * insertPoint;
double[,] afterInterp = new double[afterInterpR, afterInterpC];
//如果需要插值
for (int i = 0; i < r; i++)
{
int j = 0;
int tmpR = 0, tmpC = 0, addC = 1;
for (; j < c - 1; j++)
{
tmpR = i * (insertPoint + 1);
tmpC = j * (insertPoint + 1);
afterInterp[tmpR, tmpC] = GetValueFromList(pointValueList, r, c, i, j);
if (needInsertPoint)
{
//横插
double diffC = (GetValueFromList(pointValueList, r, c, i, j + 1) -
GetValueFromList(pointValueList, r, c, i, j)) / (insertPoint + 1);
addC = 1;
for (; addC <= insertPoint; ++addC)
{
afterInterp[tmpR, tmpC + addC] = afterInterp[tmpR, tmpC] + diffC * addC;
}
}
}
tmpR = i * (insertPoint + 1);
tmpC = j * (insertPoint + 1);
afterInterp[tmpR, tmpC] = GetValueFromList(pointValueList, r, c, i, j);
}
if (needInsertPoint)
{
//纵插
for (int i = 0; i < r - 1; i++)
{
for (int j = 0; j < afterInterpC; j++)
{
int tmpR = i * (insertPoint + 1);
double diffR = (afterInterp[(i + 1) * (insertPoint + 1), j] - afterInterp[tmpR, j]) / (insertPoint + 1);
for (int addR = 1; addR <= insertPoint; ++addR)
{
afterInterp[tmpR + addR, j] = afterInterp[tmpR, j] + diffR * addR;
}
}
}
}
//转化为 HSL
hslArray = new HSL[afterInterpR, afterInterpC];
for (int i = 0; i < afterInterpR; i++)
{
for (int j = 0; j < afterInterpC; j++)
{
hslArray[i, j] = new HSL();
hslArray[i, j].H = (afterInterp[i, j] * 240) / (360);
}
}
rgbArray = new RgbColor[afterInterpR, afterInterpC];
for (int i = 0; i < afterInterpR; i++)
{
for (int j = 0; j < afterInterpC; j++)
{
rgbArray[i, j] = Hsl2Rgb(hslArray[i, j].H);
}
}
}
catch (IndexOutOfRangeException e)
{
//LogFileManager.ObjLog.info(e.Message);
}
catch (Exception e)
{
//LogFileManager.ObjLog.info(e.Message);
}
FileStream fs = null;
BinaryWriter bw = null;
try
{
fs = new FileStream(imagePath, FileMode.Create | FileMode.Append, FileAccess.Write, FileShare.None);
bw = new BinaryWriter(fs);
BITMAPINFOHEADER bih = new BITMAPINFOHEADER();
ConstructBih(afterInterpC, afterInterpR, ref bih);
BITMAPFILEHEADER bhh = new BITMAPFILEHEADER();
ContructBhh(afterInterpC, afterInterpR, ref bhh);
bhh.bfSize = bih.biSizeImage + 54;
bhh.bfOffBits = 54;
//fwrite(&bhh,1,sizeof(BITMAPFILEHEADER),fpw);
//fwrite(&bih,1,sizeof(BITMAPINFOHEADER),fpw);
bhh.Serialize(bw);
bih.Serialize(bw);
//保存像素数据
//左->右 下->上
int index = 0;
for (int i = 0; i <= afterInterpR - 1; ++i)
{
for (int j = 0; j < afterInterpC; ++j)
{
index += 3;
byte red, green, blue;
red = (byte)rgbArray[i, j].red;
green = (byte)rgbArray[i, j].green;
blue = (byte)rgbArray[i, j].blue;
//注意三条语句的顺序：否则颜色会发生变化
bw.Write(red);
bw.Write(green);
bw.Write(blue);
//fwrite(&r, 1, sizeof(BYTE), fpw);
//fwrite(&g, 1, sizeof(BYTE), fpw);
//fwrite(&b, 1, sizeof(BYTE), fpw);
int len = afterInterpC % 4;
if ((len != 0) && (index % (afterInterpC * 3) == 0))
{
byte[] blank = new byte[len];
for (int b = 0; b < len; ++b)
{
blank[b] = 0;
bw.Write(blank[b]);
//sw.Write(blank[b].ToString());
}
//fwrite(blank, sizeof(BYTE), len, fpw);
}
}
}
bw.Close();
fs.Close();
}
catch (Exception e)
{
//if(sw != null)
// sw.Close();
if (fs != null)
{
fs.Close();
}
//LogFileManager.ObjLog.info(e.Message);
}
return(imagePath);
}