public Triangle(Point p1, Point p2, Point p3)
{
points[0] = new MyPoint(p1, 0);
points[1] = new MyPoint(p2, 1);
points[2] = new MyPoint(p3, 2);
}
public void Fill(Graphics graphics)
{
int[] indexes = GetIndexesSortedByY();
int yMin = points[indexes[0]].point.Y;
int yMax = points[indexes[2]].point.Y;
if (interpolated)
{
colorsInPoints[0] = CalculateColorForXandY(points[0].point.X, points[0].point.Y);
colorsInPoints[1] = CalculateColorForXandY(points[1].point.X, points[1].point.Y);
colorsInPoints[2] = CalculateColorForXandY(points[2].point.X, points[2].point.Y);
area = CalculateArea(points[0].point, points[1].point, points[2].point);
}
for (int scanY = yMin; scanY <= yMax; scanY++)
{
for (int k = 0; k < 3; k++)
{
if (points[indexes[k]].point.Y == scanY)
{
MyPoint previous = points[points[indexes[k]].PreviousIndex];
if (previous.point.Y > scanY)
{
AET.Add(new Edge(points[indexes[k]].point, previous.point));
}
else if (previous.point.Y < scanY)
{
RemoveEdge(previous.point, points[indexes[k]].point);
}
MyPoint next = points[points[indexes[k]].NextIndex];
if (next.point.Y > scanY)
{
AET.Add(new Edge(points[indexes[k]].point, next.point));
}
else if (next.point.Y < scanY)
{
RemoveEdge(next.point, points[indexes[k]].point);
}
}
}
if (AET.Count < 2)
{
break;
}
AET.Sort((e1, e2) => e1.x.CompareTo(e2.x));
for (int x = (int)AET[0].x; x <= (int)AET[1].x; x++)
{
Color col;
if (interpolated)
{
(double alpha, double beta, double gamma) = CalculateAlphaBetaGammaForPoint(new Point(x, scanY));
double X;
X = colorsInPoints[0].R * alpha + colorsInPoints[1].R * beta + colorsInPoints[2].R * gamma;
if (X > 255)
{
X = 255;
}
if (X < 0)
{
X = 0;
}
double Y;
Y = colorsInPoints[0].G * alpha + colorsInPoints[1].G * beta + colorsInPoints[2].G * gamma;
if (Y > 255)
{
Y = 255;
}
if (Y < 0)
{
Y = 0;
}
double Z;
Z = colorsInPoints[0].B * alpha + colorsInPoints[1].B * beta + colorsInPoints[2].B * gamma;
if (Z > 255)
{
Z = 255;
}
if (Z < 0)
{
Z = 0;
}
col = Color.FromArgb((int)(X), (int)(Y), (int)(Z));
}
else
{
col = CalculateColorForXandY(x, scanY);
}
lock (Form1.bitmap)
{
bitmap.SetPixel(x, scanY, col);
}
}
foreach (var e in AET)
{
e.x += e.m;
}
}
}
static void CopyProperies(MyPoint replaceFrom, MyPoint replaceTo)
{
replaceTo.RelatedLines.AddRange(replaceFrom.RelatedLines);
}
