public static PointPolar PtdDecartToPolar(PointD decartPointD, PointD center, PointD zeroAnglePoint)
{
double diffX = zeroAnglePoint.X - center.X;
double diffY = zeroAnglePoint.Y - center.Y;
double zeroAnglePointR = Math.Sqrt(diffX * diffX + diffY * diffY);
double zeroAngle = 0.0d;
if (zeroAnglePointR != 0.0d)
{
zeroAngle = Math.Acos(diffX / zeroAnglePointR);
if (diffY >= 0)
{
zeroAngle = 2.0d * Math.PI - zeroAngle;
}
}
PointPolar polarPointD = new PointPolar();
diffX = decartPointD.X - center.X;
diffY = decartPointD.Y - center.Y;
polarPointD.R = Math.Sqrt(diffX * diffX + diffY * diffY);
polarPointD.Phi = Math.Acos(diffX / polarPointD.R);
if (diffY >= 0)
{
polarPointD.Phi = 2.0d * Math.PI - polarPointD.Phi;
}
polarPointD.Phi -= zeroAngle;
polarPointD.CropAngle(true);
return(polarPointD);
}
public static PointD PtdPolarToCartesian(PointPolar polarPointD, PointD centerCartesian, double zeroAngleInCartesian)
{
PointD cartesianPointD = new PointD();
cartesianPointD.X = polarPointD.R * Math.Cos(polarPointD.Phi + zeroAngleInCartesian) + centerCartesian.X;
cartesianPointD.Y = -polarPointD.R * Math.Sin(polarPointD.Phi + zeroAngleInCartesian) + centerCartesian.Y;
return(cartesianPointD);
}
public static PointD PtdPolarToCartesian(PointPolar polarPointD, PointD centerCartesian, PointD zeroAnglePointInCartesian)
{
double diffX = zeroAnglePointInCartesian.X - centerCartesian.X;
double diffY = zeroAnglePointInCartesian.Y - centerCartesian.Y;
double zeroAnglePointR = Math.Sqrt(diffX * diffX + diffY * diffY);
double zeroAngle = 0.0d;
if (zeroAnglePointR != 0.0d)
{
zeroAngle = Math.Acos(diffX / zeroAnglePointR);
if (diffY >= 0)
{
zeroAngle += Math.PI;
}
}
PointD decartPointD = new PointD();
decartPointD.X = polarPointD.R * Math.Cos(polarPointD.Phi + zeroAngle) + centerCartesian.X;
decartPointD.Y = -polarPointD.R * Math.Sin(polarPointD.Phi + zeroAngle) + centerCartesian.Y;
return(decartPointD);
}
public static List <PointPolar> ListDecartToPolar(List <PointD> decartPointdList, PointD center, PointD zeroAnglePoint, out double zeroAngleValue)
{
double diffX = zeroAnglePoint.X - center.X;
double diffY = zeroAnglePoint.Y - center.Y;
double zeroAnglePointR = Math.Sqrt(diffX * diffX + diffY * diffY);
double zeroAngle = 0.0d;
if (zeroAnglePointR != 0.0d)
{
zeroAngle = Math.Acos(diffX / zeroAnglePointR);
if (diffY >= 0)
{
zeroAngle = 2.0d * Math.PI - zeroAngle;
}
}
zeroAngleValue = zeroAngle;
List <PointPolar> retList = new List <PointPolar>();
foreach (PointD curPointDecart in decartPointdList)
{
PointPolar polarPointD = new PointPolar();
diffX = curPointDecart.X - center.X;
diffY = curPointDecart.Y - center.Y;
polarPointD.R = Math.Sqrt(diffX * diffX + diffY * diffY);
polarPointD.Phi = Math.Acos(diffX / polarPointD.R);
if (diffY >= 0)
{
polarPointD.Phi = 2.0d * Math.PI - polarPointD.Phi;
}
polarPointD.Phi -= zeroAngle;
polarPointD.CropAngle(true);
retList.Add(polarPointD);
}
return(retList);
}
/// <summary>
/// Gets the local minimums distribution.
/// </summary>
/// <param name="dmFieldData">The dm field data.</param>
/// <param name="dimensionNumber">The dimension number:
/// 1 - rows (angle)
/// 2 - columns (distance)
/// </param>
/// <returns>DenseMatrix.</returns>
//public static DenseMatrix GetLocalMinimumsDistribution(DenseMatrix dmFieldData, PointD sunCenterPoint, PointD imageCenterPoint, double imageRadius, int imageHeight, double imageCircleCropFactor = 0.9d, int dimensionNumber = 1)
public static List <Point3D> GetLocalMinimumsDistribution(DenseMatrix dmFieldData, RoundData sunDiskData, RoundData imageRoundData, int imageHeight, double imageCircleCropFactor = 0.9d)
{
// DenseMatrix dmFieldminimumsData = DenseMatrix.Create(dmFieldData.RowCount, dmFieldData.ColumnCount, 0.0d);
List <Point3D> lRetPoints = new List <Point3D>();
double imageRadius = imageRoundData.DRadius;
PointD imageCenterPoint = imageRoundData.pointDCircleCenter();
PointPolar imageCenterPointRelatedToSunCenter = new PointPolar(imageCenterPoint - sunDiskData.pointDCircleCenter(), true);
double distanceSunCenterToImageCenter = PointD.Distance(imageCenterPoint, sunDiskData.pointDCircleCenter());
#region // obsolete
//if (dimensionNumber == 1)
//{
#endregion // obsolete
for (int i = 0; i < dmFieldData.RowCount; i++)
{
bool itsTheCropCase = false;
//если направлени на кроп кадра - то не берем в расмотрение
double currentAngle = ((double)i / (double)(dmFieldData.RowCount - 1)) * 2.0d * Math.PI;
LineDescription2D line, lineMargin;
if (currentAngle < Math.PI)
{
//верхняя половина, смотрим направление на y=0.0d
line = new LineDescription2D(sunDiskData.pointDCircleCenter(),
new Vector2D(Math.Cos(currentAngle), -Math.Sin(currentAngle)));
lineMargin = new LineDescription2D(new PointD(0.0d, 0.0d), new Vector2D(1.0d, 0.0d));
}
else
{
line = new LineDescription2D(sunDiskData.pointDCircleCenter(),
new Vector2D(Math.Cos(currentAngle), Math.Sin(currentAngle)));
lineMargin = new LineDescription2D(new PointD(0.0d, imageHeight), new Vector2D(1.0d, 0.0d));
}
PointD crossPointD = LineDescription2D.CrossPoint(line, lineMargin);
if (crossPointD.Distance(imageCenterPoint) < imageRadius)
{
itsTheCropCase = true;
}
#region // obsolete
//double yMargin = 0.0d;
//double xMargin = sunCenterPoint.X + (yMargin - sunCenterPoint.Y) / Math.Tan(currentAngle);
//double dx = xMargin - imageCenterPoint.X;
//double dy = yMargin - imageCenterPoint.Y;
//if (Math.Sqrt(dx * dx + dy * dy) < imageRadius) itsTheCropCase = true;
#endregion // obsolete
#region //obsolete
//else
//{
// //нижняя половина, смотрим направление на y=imageHeight
// double yMargin = (double)imageHeight;
// double xMargin = sunCenterPoint.X + (yMargin - sunCenterPoint.Y) / Math.Tan(currentAngle);
// double dx = xMargin - imageCenterPoint.X;
// double dy = yMargin - imageCenterPoint.Y;
// if (Math.Sqrt(dx * dx + dy * dy) < imageRadius) itsTheCropCase = true;
//}
#endregion //obsolete
//Если слишком близко к краю изображения - тоже исключаем. Минимум должен лежать не ближе, например, 1/15
//DenseMatrix dmSlicedDataMatrix = (DenseMatrix)dmFieldData.SubMatrix(i, 1, 0, dmFieldData.ColumnCount);
DenseVector dvRowDataVector = (DenseVector)dmFieldData.EnumerateRows().ElementAt(i);
#region // debug plotting
//dvRowDataVector.SaveVectorDataAsImagePlot(
// "D:\\_gulevlab\\SkyImagesAnalysis_appData\\patent-samples\\result.2015-03-24\\img-2014-09-20T16-03-58devID1\\dvRowDataVector-plot-image-" +
// i.ToString("D03") + "-step1.png");
#endregion // debug plotting
dvRowDataVector.MapIndexedInplace((idx, x) => ((x == 0.0d) || (idx < sunDiskData.DRadius * 1.5d)) ? (1.0d) : (x));
#region // debug plotting
//dvRowDataVector.SaveVectorDataAsImagePlot(
// "D:\\_gulevlab\\SkyImagesAnalysis_appData\\patent-samples\\result.2015-03-24\\img-2014-09-20T16-03-58devID1\\dvRowDataVector-plot-image-" +
// i.ToString("D03") + "-step2.png");
#endregion // debug plotting
double phiFromImageCenterToDirection = imageCenterPointRelatedToSunCenter.Phi - currentAngle;
double distanceToImageMargin = distanceSunCenterToImageCenter * Math.Cos(phiFromImageCenterToDirection) +
Math.Sqrt(imageRadius * imageRadius -
distanceSunCenterToImageCenter * distanceSunCenterToImageCenter *
Math.Sin(phiFromImageCenterToDirection) *
Math.Sin(phiFromImageCenterToDirection));
dvRowDataVector.MapIndexedInplace(
(idx, x) => ((double)idx / distanceToImageMargin >= imageCircleCropFactor) ? (1.0d) : (x));
#region // debug plotting
//dvRowDataVector.SaveVectorDataAsImagePlot(
// "D:\\_gulevlab\\SkyImagesAnalysis_appData\\patent-samples\\result.2015-03-24\\img-2014-09-20T16-03-58devID1\\dvRowDataVector-plot-image-" +
// i.ToString("D03") + "-step3.png");
#endregion // debug plotting
double minValue = dvRowDataVector.Minimum();
int minValueIndex = dvRowDataVector.MinimumIndex();
//if (!itsTheCropCase) dmFieldminimumsData[i, minValueIndex] = minValue;
if ((!itsTheCropCase) && ((double)minValueIndex > sunDiskData.DRadius))
{
lRetPoints.Add(new Point3D(currentAngle, minValueIndex, minValue));
}
else
{
continue;
}
}
#region // obsolete
//}
//else if (dimensionNumber == 2)
//{
// for (int i = 0; i < dmFieldData.ColumnCount; i++)
// {
// DenseMatrix dmSlicedDataMatrix = (DenseMatrix)dmFieldData.SubMatrix(0, dmFieldData.RowCount, i, 1);
// DenseVector dvSlicedDataVector = DenseVector.OfEnumerable(dmSlicedDataMatrix.Values);
// dvSlicedDataVector.MapInplace(new Func<double, double>(x => (x == 0.0d) ? (1.0d) : (x)));
// double minValue = dvSlicedDataVector.Minimum();
// int minValueIndex = dvSlicedDataVector.MinimumIndex();
// dmFieldminimumsData[minValueIndex, i] = minValue;
// }
//}
#endregion // obsolete
//return dmFieldminimumsData;
return(lRetPoints);
}
