private void DDA_Line1(Line line)
{
int dY, step, absX, absY;
float x, y, x_inc, y_inc;
int dX = line.getEndPoint().X - line.getStartPoint().Y;
dY = line.getEndPoint().Y - line.getStartPoint().Y;
absX = Math.Abs(dX);
absY = Math.Abs(dY);
if (absX > absY)
{
step = absX;
}
else
{
step = absY;
}
x_inc = dX / step;
y_inc = dY / step;
x = line.getStartPoint().X;
y = line.getStartPoint().Y;
putpixel(round(line.getStartPoint().X), round(line.getStartPoint().Y), line.getColor());
step--;
int k = 1;
while (step != -1)
{
x += x_inc;
y += y_inc; //
putpixel(round(x), round(y), line.getColor());
k++; //
step--; //
}
}
public void drawLinebyMidPoint(Line line, bool dottedLineFlag = false)
{
int x1 = round(line.getStartPoint().X);
int y1 = round(line.getStartPoint().Y);
int x2 = round(line.getEndPoint().X);
int y2 = round(line.getEndPoint().Y);
int Dx = round(x2 - x1);
int Dy = round(y2 - y1);
int x = round(x1);
int y = round(y1);
putpixel(x1, y1, line.getColor());
float P = 2 * Dy - Dx;
float Q = 2 * Dx - Dy;
int count = 0;
while (x < x2 || y < y2)
{
if (y < y2)
{
y++;
if (Q < 0)
{
Q = Q + 2 * Dx;
}
else
{
Q = Q + 2 * (Dx - Dy);
x++;
}
}
else
{
x++;
if (P < 0)
{
P = P + 2 * Dy;
}
else
{
P = P + 2 * (Dy - Dx);
y++;
}
}
if (dottedLineFlag == false || (dottedLineFlag == true && count % 10 == 0))
{
putpixel(round(x), round(y), line.getColor());
}
count++;
}
}
public void DDA_Line(Line line) // Ve duong thang co dinh dang mau
{
//Line line = (Line)s;
int Dx, Dy, count, temp_1, temp_2, dem = 1, absX, absY;
//int temp_3, temp_4;
Dx = line.getEndPoint().X - line.getStartPoint().Y;
Dy = line.getEndPoint().Y - line.getStartPoint().Y;
absX = Math.Abs(Dx);
absY = Math.Abs(Dy);
if (absY > absX)
{
count = absY;
}
else
{
count = absX;
}
float x, y, delta_X, delta_Y;
if (count > 0)
{
delta_X = Dx;
delta_X /= count;
delta_Y = Dy;
delta_Y /= count;
x = line.getStartPoint().X;
y = line.getStartPoint().Y;
do
{
temp_1 = round(x);
temp_2 = round(y);
putpixel(temp_1, temp_2, line.getColor());
// temp_3 = temp_1;
// temp_4 = temp_2;
x += delta_X;
y += delta_Y;
--count;
dem++;
} while (count != -1);
}
}
public void DDA_Line2(Line line)
{
int xInitial = line.getStartPoint().X, yInitial = line.getStartPoint().Y, xFinal = line.getEndPoint().X, yFinal = line.getEndPoint().Y;
int dx = xFinal - xInitial, dy = yFinal - yInitial, steps, k, xf, yf;
float xIncrement, yIncrement, x = xInitial, y = yInitial;
if (Math.Abs(dx) > Math.Abs(dy))
{
steps = Math.Abs(dx);
}
else
{
steps = Math.Abs(dy);
}
xIncrement = dx / (float)steps;
yIncrement = dy / (float)steps;
//PixelFunc func = new PixelFunc(SetPixel);
for (k = 0; k < steps; k++)
{
x += xIncrement;
xf = (int)x;
y += yIncrement;
yf = (int)y;
//try
//{
//pictureBox1.Invoke(func, xf, yf, Color.Blue);
putpixel(round(x), round(y), line.getColor());
//}
//catch (InvalidOperationException)
//{
// return;
//}
}
}
