/// <summary>
/// Compare if four points polygon is inside or outside in Rectangle(0,0, width, height)
/// </summary>
/// <param name="FourPoints">Four points</param>
/// <param name="width">The width of rectangle</param>
/// <param name="height">The height of rectangle</param>
/// <returns>True if is outside. False if is inside</returns>
public bool CompareTwoRetangle(List <Point3D> FourPoints, int width, int height)
{
double RightX = RemapPixels.Max4(FourPoints[0].X, FourPoints[1].X, FourPoints[2].X, FourPoints[3].X);
double LeftX = RemapPixels.Min4(FourPoints[0].X, FourPoints[1].X, FourPoints[2].X, FourPoints[3].X);
double UpY = RemapPixels.Min4(FourPoints[0].Y, FourPoints[1].Y, FourPoints[2].Y, FourPoints[3].Y);
double DownY = RemapPixels.Max4(FourPoints[0].Y, FourPoints[1].Y, FourPoints[2].Y, FourPoints[3].Y);
if ((LeftX < 0) || (RightX > width) || (UpY < 0) || (DownY > height))
{
return(true);
}
else
{
return(false);
}
}
private void RecalculateColor(Bitmap Original, Bitmap Destination, List <List <Point3D> > HomographySecondToFirst)
{
//Recalculate new color of the pixel.
LockBitmap SecondBmpLock = new LockBitmap(Original);
SecondBmpLock.LockBits();
LockBitmap SecondBmpResultLock = new LockBitmap(Destination);
SecondBmpResultLock.LockBits();
int widthSecondOriginal = Original.Width;
int heightSecondOriginal = Original.Height;
ProgBar.Maximum = HomographySecondToFirst.Count;
ProgBar.Minimum = 0;
ProgBar.Step = 1;
ProgBar.Value = 0;
for (int j = 0; j < HomographySecondToFirst.Count - 2; j++)
{
for (int i = 0; i < HomographySecondToFirst[j].Count - 2; i++)
{
//Surrounded pixel from Points
List <Point3D> currList = new List <Point3D>();
currList.Add(HomographySecondToFirst[j][i]);
currList.Add(HomographySecondToFirst[j][i + 1]);
currList.Add(HomographySecondToFirst[j + 1][i + 1]);
currList.Add(HomographySecondToFirst[j + 1][i]);
// Only if the distorted polygon is inside the bitmap
if (!CompareTwoRetangle(currList, widthSecondOriginal, heightSecondOriginal))
{
Color c = RemapPixels.RecalcPixelColor(currList, SecondBmpLock, widthSecondOriginal, heightSecondOriginal);
SecondBmpResultLock.SetPixel(i, j, c);
}
}
ProgBar.PerformStep();
}
SecondBmpLock.UnlockBits();
SecondBmpResultLock.UnlockBits();
}