private void button_drawLine_Click(object sender, EventArgs e)
{
// get location of point 1, point 2
if (!get_p1p2())
{
return;
}
DrawLine drawLine = new DrawLine(bitmap);
if (comboBox_algo.Text.Equals("DDA"))
{
drawLine.DDA(line, Color.Blue);
}
else if (comboBox_algo.Text.Equals("Bresenham"))
{
drawLine.Bresenham(line, Color.Blue);
}
else if (comboBox_algo.Text.Equals("MidPoint"))
{
drawLine.MidPoint(line, Color.Blue);
}
else if (comboBox_algo.Text.Equals("Xiaolin Wu"))
{
drawLine.XiaolinWu(line, Color.Blue);
}
// refresh picture box every draw
pictureBox_draw.Refresh();
}
private void button_rand_click(object sender, EventArgs e)
{
if (!get_numRand())
{
return;
}
// clear all drawings before random
clearAll();
// if no random list line, or old one is not enough, create new one
// otherwise, use the already have random list line
if (lineS.Count < this.numRand)
{
randLineS(numRand);
}
// StopWatch object for calculating execution time of the algorithm
// StartNew and Stop for make sure stopwatch is not redundant object
Stopwatch stopwatch = Stopwatch.StartNew();
stopwatch.Stop();
DrawLine drawLine2D = new DrawLine(bitmap);
if (comboBox_algo.Text.Equals("DDA"))
{
stopwatch.Restart();
for (int i = 0; i < numRand; ++i)
{
drawLine2D.DDA(lineS[i], Color.Blue);
}
stopwatch.Stop();
}
else if (comboBox_algo.Text.Equals("Bresenham"))
{
stopwatch.Restart();
for (int i = 0; i < numRand; ++i)
{
drawLine2D.Bresenham(lineS[i], Color.Blue);
}
stopwatch.Stop();
}
else if (comboBox_algo.Text.Equals("MidPoint"))
{
stopwatch.Restart();
for (int i = 0; i < numRand; ++i)
{
drawLine2D.MidPoint(lineS[i], Color.Blue);
}
stopwatch.Stop();
}
else if (comboBox_algo.Text.Equals("Xiaolin Wu"))
{
stopwatch.Restart();
for (int i = 0; i < numRand; ++i)
{
drawLine2D.XiaolinWu(lineS[i], Color.Blue);
}
stopwatch.Stop();
}
// set running time to text box
textBox_randLineTime.Text = stopwatch.ElapsedMilliseconds.ToString() + " ms";
// refresh picture box every draw
pictureBox_draw.Refresh();
}