private double gravity(obj a, obj b)
{
G = 10000;
//double G = 6.67*(0.00000000001); //6,67*10^(-11)
double x = a.pos.X - b.pos.X;
double y = a.pos.Y - b.pos.Y;
double distance = Math.Sqrt(x * x + y * y);
//double modifier = 1.5;
return(G * a.mass * b.mass / (distance * distance));
}
private void button5_Click(object sender, EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
using (BinaryReader reader = new BinaryReader(File.Open(openFileDialog1.FileName, FileMode.Open)))
{
int count = reader.ReadInt32();
objects.Clear();
objects = new List <obj>();
for (int i = 0; i < count; i++)
{
int size = reader.ReadInt32();
byte[] readen = reader.ReadBytes(size);
obj temp = ByteArrayToObject <obj>(readen);
objects.Add(temp);
}
drawObjects();
}
}
}
private void drawObjects()
{
if (!pictureBox1.Focused)
{
pictureBox1.Focus();
}
gr.Clear(Color.White);
Pen pen = new Pen(Color.Black, 1);
if (checkBox5.Checked)
{
int step = trackBar2.Value;
for (int i = 0; i < pictureBox1.Width; i += step)
{
gr.DrawLine(pen, i, 0, i, pictureBox1.Height);
}
for (int k = 0; k < pictureBox1.Height; k += step)
{
gr.DrawLine(pen, 0, k, pictureBox1.Width, k);
}
}
gr.DrawString("SCALE=" + (int)(scale * 100) + "%", new Font(Font, new FontStyle()), new HatchBrush(HatchStyle.Shingle, Color.Black), 0, 0);
if (checkBox3.Checked)
{
int step = trackBar2.Value;
for (int i = 0; i < pictureBox1.Height; i += step)
{
for (int k = 0; k < pictureBox1.Width; k += step)
{
field temp = null;
obj a = new obj(new vector(k, i), new vector(0, 0), 1, true);
foreach (var o in objects)
{
double currForce = gravity(a, o);
vector gravVector = new vector(a.pos.X - o.pos.X, a.pos.Y - o.pos.Y);
double angleX = gravVector.X / gravVector.lenght();
double angleY = gravVector.Y / gravVector.lenght();
a.force.X += currForce * angleX;
a.force.Y += currForce * angleY;
temp = new field(a.pos, a.force);
//Field.Add(temp);
}
pen = new Pen(Color.Green, 1);
if (temp != null)
{
gr.DrawLine(pen, (int)temp.B.X, (int)temp.B.Y,
(int)temp.E.X + (int)temp.B.X, (int)temp.E.Y + (int)temp.B.Y);
}
}
}
//foreach (var field in Field)
//{
//}
}
foreach (var o in objects)
{
try
{
//gr.DrawEllipse(new Pen(Color.Black, 3), (int)o.pos.X - o.mass / 2,
// (int)o.pos.Y - o.mass / 2, o.mass, o.mass);
if (!checkBox4.Checked || (o.texture == null))
{
gr.DrawEllipse(new Pen(Color.Black, 3), (int)o.pos.X - o.mass / 2,
(int)o.pos.Y - o.mass / 2, o.mass, o.mass);
}
else
{
gr.DrawImage(o.texture, (int)o.pos.X - o.mass / 2,
(int)o.pos.Y - o.mass / 2);
}
if (checkBox2.Checked)
{
gr.DrawLine(new Pen(Color.Red, 2), (int)o.pos.X, (int)o.pos.Y,
(int)(o.pos.X + o.speed.X), (int)(o.pos.Y + o.speed.Y));
gr.DrawLine(new Pen(Color.Blue, 2), (int)o.pos.X, (int)o.pos.Y,
(int)(o.pos.X + o.force.X), (int)(o.pos.Y + o.force.Y));
}
if (checkBox1.Checked && o.avalible)
{
gr.DrawString(o.ToString(), Font, new HatchBrush(HatchStyle.Shingle, Color.Black),
(float)o.pos.X + o.mass / 2,
(float)o.pos.Y - o.mass / 2);
}
}
catch (Exception)
{
}
}
pictureBox1.Invalidate();
pictureBox1.Update();
}
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
pictureBox1.Focus();
drawObjects();
dravCross(e.X, e.Y, 10);
if (stage != 0)
{
//dravCross(e.X, e.Y, 10);
try
{
switch (stage)
{
case 1: //рисование массы - диаметра объекта
{
int size = 1 + (int)(Math.Sqrt((e.X - mX) * (e.X - mX) + (e.Y - mY) * (e.Y - mY)) * 2);
sizeLast = size;
gr.DrawEllipse(new Pen(Color.Black, 3), mX - (size) / 2, mY - (size) / 2,
size, size);
if (checkBox1.Checked)
{
gr.DrawString("MASS:" + size, Font, new HatchBrush(HatchStyle.Shingle, Color.Black),
(float)mX + size / 2,
(float)mY - size / 2);
}
//gr.DrawEllipse();
//pictureBox1.Invalidate();
//pictureBox1.Update();
break;
}
case 2: //ресование вектора скорости
{
gr.DrawEllipse(new Pen(Color.Black, 3), mX - (sizeLast) / 2, mY - (sizeLast) / 2,
sizeLast, sizeLast);
gr.DrawLine(new Pen(Color.Red, 3), mX, mY, e.X, e.Y);
if (checkBox1.Checked)
{
gr.DrawString(
"XY:" + (e.X - mX) + "," + (e.Y - mY) + ",L:" +
((int)((new vector(e.X - mX, e.Y - mY)).lenght())).ToString(), Font,
new HatchBrush(HatchStyle.Shingle, Color.Red),
e.X, e.Y);
}
//pictureBox1.Invalidate();
//pictureBox1.Update();
break;
}
}
if (stage == 3)
{
stage = 0;
obj temp;
if (!stoped)
{
temp = new obj(new vector(mX, mY), new vector(e.X - mX, e.Y - mY), sizeLast, stoped);
}
else
{
temp = (new obj(new vector(mX, mY), new vector(0, 0), sizeLast, stoped));
}
if (checkBox4.Checked)
{
if (imgs.Count > 0)
{
int index = t.selectedIndex;
temp.textureIndex = index;
temp.texture = ResizeImg(imgs[index].image, sizeLast, sizeLast);
}
else
{
MessageBox.Show("textures list is empty. copy PNGs to program folder and restart app.");
}
}
objects.Add(temp);
drawObjects();
}
}
catch (Exception)
{
}
}
pictureBox1.Invalidate();
pictureBox1.Update();
}