private void buttonCalc_Click(object sender, EventArgs e)
{
locations[0].rssi = StringToInt(textBoxRSSI1.Text);
locations[1].rssi = StringToInt(textBoxRSSI2.Text);
locations[2].rssi = StringToInt(textBoxRSSI3.Text);
int i;
for (i = 0; i < 3; i++)
{
borders[i] = new BorderLine(locations[i % 3], locations[(i + 1) % 3]);
}
DrawMap();
}
private void DrawMap()
{
var g = map.CreateGraphics();
g.Clear(Color.White);
int i;
for (i = 0; i < 3; i++)
{
// 受信機の位置
float x = locations[i].x, y = locations[i].y;
g.FillEllipse(Brushes.Blue, x - 10, y - 10, 20, 20);
}
for (i = 0; i < 3; i++)
{
BorderLine b = borders[i];
// 境界
if (!b.isReady)
{
continue;
}
if (b.isLine)
{
// 線
if (b.vy == 0)
{
// x軸に平行
g.DrawLine(Pens.Black, 0, b.y, map.Width, b.y);
}
else
{
float t = -b.x / b.vx;
float line_b = b.y + t * b.vy; // y軸切片
float line_a = (b.y - line_b) / b.x; // 傾き
float left_y = line_a * map.Width + line_b;
g.DrawLine(Pens.Black, 0, line_b, map.Width, left_y);
}
}
else
{
// 円
g.DrawEllipse(Pens.Black, b.x - b.r, b.y - b.r, b.r * 2, b.r * 2);
}
}
}
