/// <summary>
/// 测试成功 , 取截图中红,蓝点
/// </summary>
/// <param name="bitmap"></param>
/// <param name="rv"></param>
/// <param name="bv"></param>
/// <param name="Yoffset">Y轴补偿</param>
/// <returns></returns>
public static Tuple <Point[], Vector3RGB[]> GetCurve2Points(Bitmap bitmap, int rv, int bv, int Yoffset = 3)
{
int width = bitmap.Width;
int height = bitmap.Height;
int length = height * 3 * width;
byte[] RGBArr = new byte[length];
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
System.IntPtr Scan0 = data.Scan0;
System.Runtime.InteropServices.Marshal.Copy(Scan0, RGBArr, 0, length);
Point[] point2 = new Point[2];
Vector3RGB[] vrgb = new Vector3RGB[2];
int rowc = 0;
int firstPointRowIndx = 0;
bool redFound = false;
bool blueFound = false;
for (int PixelIdx = 0; PixelIdx < RGBArr.Length / 3; PixelIdx += 1)
{
//事实证明RGB值在数组中是反过来的。。3个小时 的调试，测试。。。
if (PixelIdx * 3 >= RGBArr.Length)
{
break;
}
if (PixelIdx * 3 + 1 >= RGBArr.Length)
{
break;
}
if (PixelIdx * 3 + 2 >= RGBArr.Length)
{
break;
}
var b = RGBArr[PixelIdx * 3];
var g = RGBArr[PixelIdx * 3 + 1];
var r = RGBArr[PixelIdx * 3 + 2];
//Vector3RGB isRedCurvePoint = Vector3RGB.EmptyVal();
//Vector3RGB isBlueCurvePoint = Vector3RGB.EmptyVal();
//假如 相除 后 小于零 那就是 第一行的 第(余数)颗像素
//余数 就是x轴
//请勿修改 ,2020年9月22号 测试通过
int x = PixelIdx % (width);
int y = PixelIdx / (width);
//找像素 证明对了...
//if (r == 237 && g == 28 && b == 36)
//{
// point2[0] = new Point(x, y);
// goto End;
//}
if (true)//用于调试方便 切换用的。。
{
//找红点 , redFound 变量 防止第一个红色坐标被后续的坐标覆盖了。
if (!redFound && y > rowc && r > 240 && g < rv && b < rv)
{
vrgb[0] = new Vector3RGB(r, g, b);
point2[0] = new Point(x, y + Yoffset);
//goto End;
rowc = y;
redFound = true; //找饱和度最高的
}
else if (!blueFound && y > rowc && b > 240 && r < bv && g < bv)
{
vrgb[1] = new Vector3RGB(r, g, b);
point2[1] = new Point(x, y + Yoffset);
rowc = y;
blueFound = true;
}
//又掉坑了。。哎，半小时。
//得先确定 redFound=true ，再确认 redFound是否 跟 blueFound 相等。
// redFound==blueFound==true 这是错误的写法，可能是从左边开始判断的。。
//最佳写法是 redFound==true==blueFound
if (blueFound == true && redFound == blueFound)
{
goto End;
}
}
}
End:
//读取而已,无需再次写入
//System.Runtime.InteropServices.Marshal.Copy(RGB, 0, Scan0, length);
bitmap.UnlockBits(data);
return(new Tuple <Point[], Vector3RGB[]>(point2, vrgb));
}
/// <summary>
/// 测试成功 , 取截图中红,蓝点
/// </summary>
/// <param name="bitmap"></param>
/// <param name="rv"></param>
/// <param name="bv"></param>
/// <param name="Yoffset">Y轴补偿</param>
/// <returns></returns>
public static Tuple <Point[], Vector3RGB[]> GetCurve2PointsBigClip(Bitmap bitmap, int rv, int bv, int Yoffset = 3)
{
int width = bitmap.Width;
int height = bitmap.Height;
int length = height * 3 * width;
byte[] RGBArr = new byte[length];
BitmapData data = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
System.IntPtr Scan0 = data.Scan0;
System.Runtime.InteropServices.Marshal.Copy(Scan0, RGBArr, 0, length);
//p[0] 是红色 , p[1] 是蓝色
Point[] OutPoint = new Point[2];
Vector3RGB[] vrgb = new Vector3RGB[2];
int RedMinX = -1;
int BlueMinX = -1;
int RedY = 0;
int BlueY = 0;
bool RedFirstFound = true;
bool BlueFirstFound = true;
//必须能被3整除否则,格式肯定是有问题或不完整的
if (RGBArr.Length % 3 == 0)
{
for (int PixelIdx = 0; PixelIdx < RGBArr.Length / 3; PixelIdx++)
{
if (PixelIdx == RGBArr.Length / 3 - 1)
{
break;
}
var b = RGBArr[PixelIdx * 3];
var g = RGBArr[PixelIdx * 3 + 1];
var r = RGBArr[PixelIdx * 3 + 2];
//Vector3RGB isRedCurvePoint = Vector3RGB.EmptyVal();
//Vector3RGB isBlueCurvePoint = Vector3RGB.EmptyVal();
//假如 相除 后 小于零 那就是 第一行的 第(余数)颗像素
//余数 就是x轴
//请勿修改 ,2020年9月22号 测试通过
int x = PixelIdx % (width);
int y = PixelIdx / (width);
//找像素 证明对了...
//if (r == 237 && g == 28 && b == 36)
//{
// point2[0] = new Point(x, y);
// goto End;
//}
if (true)//用于调试方便 切换用的。。
{
if (r > 240 && g < rv && b < rv)
{
if (x > 0)
{
//这个是为了 初始化 最小值 ,得到最小值
if (RedFirstFound)
{
RedFirstFound = false;
RedMinX = x; //因为第一次也可能是 X轴最小的红点
RedY = y;
vrgb[0] = new Vector3RGB(r, g, b);
}
//找到X轴最小的红点像素
if (x < RedMinX)
{
RedMinX = x;
RedY = y;
vrgb[0] = new Vector3RGB(r, g, b);
}
}
}
else if (b > 240 && r < bv && g < bv)
{
if (x > 0)
{
//这个是为了 初始化 最小值 ,得到最小值
if (BlueFirstFound) //这叫常开门 , 第一次后就自锁了
{
BlueFirstFound = false;
BlueMinX = x; //因为第一次也可能是 X轴最小的蓝点
BlueY = y;
vrgb[1] = new Vector3RGB(r, g, b);
}
else if (x < BlueMinX)
{
BlueMinX = x;
BlueY = y;
vrgb[1] = new Vector3RGB(r, g, b);
}
}
}
}
}
}
Error:
if (RedMinX == -1 || BlueMinX == -1)
{
OutPoint[0] = new Point(-1, -1);
OutPoint[1] = new Point(-1, -1);
bitmap.UnlockBits(data);
return(new Tuple <Point[], Vector3RGB[]>(OutPoint, vrgb));
}
else
{
OutPoint[0] = new Point(RedMinX, RedY);
OutPoint[1] = new Point(BlueMinX, BlueY);
}
//读取而已,无需再次写入
//System.Runtime.InteropServices.Marshal.Copy(RGB, 0, Scan0, length);
bitmap.UnlockBits(data);
return(new Tuple <Point[], Vector3RGB[]>(OutPoint, vrgb));
}