private void button1_Click(object sender, EventArgs e)
{
GraphicRepresentation frm = new GraphicRepresentation();
GraphicPainter painter = new GraphicPainter();
painter.DrawElement = frm.pictureBoxToDraw;
ConfigurePainter(ref painter, currentIndex);
frm.CurrentPainter = painter;
frm.Show();
}
private void ConfigurePainter(ref GraphicPainter painter, int currentIndex)
{
try
{
double a = Convert.ToDouble(textBox1.Text),
b = Convert.ToDouble(textBox2.Text);
int n = Convert.ToInt32(numericUpDown1.Value);
ConfigureBounds(ref painter, a, b);
painter.Draw(func, GetRandColor(), (float)width);
DrawCurrentRegion(ref painter, currentIndex, a, b, n);
}
catch (InvalidCastException exp)
{
MessageBox.Show(exp.Message);
}
}
private void ConfigureBounds(ref GraphicPainter painter, double a, double b)
{
double maxF = func.MaxValue(a, b, false),
minF = func.MinValue(a, b, false);
double x, y, x1, y1;
if (a < 0)
{
x = a - 1;
}
else
{
x = -1;
}
if (b < 0)
{
x1 = 1;
}
else
{
x1 = b + 1;
}
if (maxF < 0)
{
y1 = 1;
}
else
{
y1 = maxF + 1;
}
if (minF > 0)
{
y = -1;
}
else
{
y = minF - 1;
}
painter.XBounds = new Point((int)x - 1, (int)x1 + 1);
painter.YBounds = new Point((int)y - 1, (int)y1 + 1);
}
private void DrawCurrentRegion(ref GraphicPainter painter, int currentIndex, double a, double b, int n)
{
switch (currentIndex)
{
case 0:
painter.DrawPath(painter.PathForRectangularMethod(func, RectangularMethodType.Left, a, b, n),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
case 1:
painter.DrawPath(painter.PathForRectangularMethod(func, RectangularMethodType.Right, a, b, n),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
case 2:
painter.DrawPath(painter.PathForRectangularMethod(func, RectangularMethodType.Central, a, b, n),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
case 3:
painter.DrawPath(painter.PathForTrapezoidMethod(func, a, b, n),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
case 4:
painter.DrawPath(painter.PathForSimpsonMethod(func, a, b, n),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
case 6:
painter.DrawPath(painter.PathForFunction(func, a, b),
GetRandColor(), (float)width, GetRandColor(), alpha);
break;
default:
break;
}
}