private void Button_draw_2D_Click(object sender, EventArgs e)
{
string exp = textBox_exp_2D.Text;
if (exp == "")
{
MessageBox.Show("请输入表达式。");
return;
}
try
{
Function.Function func = new Function.Function(exp);
Caculate2D = func.GetValue;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
if (Max_2D <= Min_2D)
{
MessageBox.Show("定义域输入不合法。");
return;
}
Bitmap bitmap = new Bitmap(pictureBox_2D.Width, pictureBox_2D.Height);
using (Graphics g = Graphics.FromImage(bitmap))
{
painter2D = new Painter2D(pictureBox_2D, g, pen_2D, Caculate2D, Min_2D, Max_2D);
try
{
painter2D.Draw();
pictureBox_2D.Image = bitmap;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
ShowXY_2D = true;
}
private void Button_draw_Click(object sender, EventArgs e)
{
//try
//{
// minX = double.Parse(textBox_min.Text);
// maxX = double.Parse(textBox_max.Text);
//}
//catch (Exception ex)
//{
// MessageBox.Show(ex.Message);
// return;
//}
if (maxX <= minX)
{
MessageBox.Show("数值输入不合法。");
return;
}
//DrawFunction();
Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
Graphics g = Graphics.FromImage(bitmap);
painter = new Painter2D(pictureBox, g, mypen, Caculate, minX, maxX);
try
{
painter.Draw();
pictureBox.Image = bitmap;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
g.Dispose();
}
ShowXY = true;
}