public float vx, vy; // 方向ベクトル（isLine==true）
public BorderLine(LocationStruct p1, LocationStruct p2)
{
isLine = true;
x = y = r = vx = vy = 0;
isReady = p1.rssi > 0 && p2.rssi > 0;
if (!isReady)
{
return;
}
float m, n;
// 強度から距離の比を決める
m = (float)1.0 / Math.Abs(p1.rssi);
n = (float)1.0 / Math.Abs(p2.rssi);
isLine = (p1.rssi == p2.rssi);
if (isLine)
{
// 結果は直線
x = (p1.x * n + p2.x * m) / (m + n);
y = (p1.y * n + p2.y * m) / (m + n);
vx = (p1.y - p2.y);
vy = (p2.x - p1.x);
}
else
{
// 結果は円
float m2 = m * m, n2 = n * n;
x = (-p1.x * n2 + p2.x * m2) / (m2 - n2);
y = (-p1.y * n2 + p2.y * m2) / (m2 - n2);
float dist = (float)Math.Sqrt(Math.Pow(p1.x - p2.x, 2) + Math.Pow(p1.y - p2.y, 2));
r = Math.Abs(m * n / (m2 - n2)) * dist;
}
}
private void buttonSave_Click(object sender, EventArgs e)
{
locations[0] = new LocationStruct(StringToFloat(textBoxX1.Text), StringToFloat(textBoxY1.Text));
locations[1] = new LocationStruct(StringToFloat(textBoxX2.Text), StringToFloat(textBoxY2.Text));
locations[2] = new LocationStruct(StringToFloat(textBoxX3.Text), StringToFloat(textBoxY3.Text));
this.Close();
}