public Point CalculateIntersection(Straight FirstStraight, Straight SecondStraight)
{
//1) y1 = k*x1 + b
//2) y2 = k*x2 + b
var firstCoeff = FindСoefficients(FirstStraight);
var secondCoeff = FindСoefficients(SecondStraight);
//y = k1*x + b1
//y = k2*x + b2
var intersection = FindPoint(firstCoeff, secondCoeff);
return(new Point()
{
X = intersection.x, Y = intersection.y
});
}
private static (float k, float b) FindСoefficients(Straight straight)
{
var y1 = straight.FirstPoint.Y;
var x1 = straight.FirstPoint.X;
var y2 = straight.SecondPoint.Y;
var x2 = straight.SecondPoint.X;
//1) y1 = k*x1 + b
//2) y2 = k*x2 + b
//b = y1 - k*x1
//y2 = k*x2 + y1 - k*x1
//y2 - y1 = (x2 - x1)*k
//k = (y2-y1)/(x2 - x1)
//tempY = y2-y1
//tempX = x2 - x1
var tempY = y2 - y1;
var tempX = x2 - x1;
var k = tempY == 0 && tempX == 0 ? 0.0f : tempY / tempX;
var b = y1 - (k * x1);
return(k, b);
}
