public Vector2 Update()
{
if (Keyboard.GetState().IsKeyDown(Keys.Left))
{
mousePos.X -= MOUSE_SPEED / Camera.GetZoom();
}
if (Keyboard.GetState().IsKeyDown(Keys.Right))
{
mousePos.X += MOUSE_SPEED / Camera.GetZoom();
}
if (Keyboard.GetState().IsKeyDown(Keys.Up))
{
mousePos.Y -= MOUSE_SPEED / Camera.GetZoom();
}
if (Keyboard.GetState().IsKeyDown(Keys.Down))
{
mousePos.Y += MOUSE_SPEED / Camera.GetZoom();
}
if (Keyboard.GetState().IsKeyDown(Keys.Enter))
{
if (!(Points.Count > 0 && mousePos == Points[Points.Count - 1]))
{
Points.Add(mousePos);
}
}
if (Keyboard.GetState().IsKeyDown(Keys.Delete) && Points.Count > 0)
{
Points.RemoveAt(Points.Count - 1);
}
return(mousePos);
}
public void Draw(SpriteBatch spriteBatch)
{
for (var i = 0; i < Points.Count; ++i)
{
Vector2 distance;
if (i + 1 == Points.Count)
{
distance = mousePos - Points[i];
}
else
{
distance = Points[i + 1] - Points[i];
}
var length = Math.Pow(distance.X, 2) + Math.Pow(distance.Y, 2);
length = Math.Sqrt(length);
var angle = (float)Math.Atan2(distance.Y, distance.X);
var box = new Rectangle((int)Points[i].X, (int)Points[i].Y, (int)length, 3);
spriteBatch.Draw(line, box, null, Color.White, angle, new Vector2(0, line.Height / 2F), SpriteEffects.None, 1f);
}
foreach (var point in Points)
{
spriteBatch.Draw(dot, point, null, Color.White, 0, new Vector2(dot.Width / 2F, dot.Height / 2F), 1 / Camera.GetZoom(), SpriteEffects.None, 1f);
}
}