/// <summary>
/// Perimeter of a rectangle
/// </summary>
/// <param name="A"></param>
/// <param name="B"></param>
/// <param name="C"></param>
/// <param name="D"></param>
/// <returns></returns>
public static double Perimeter(Caliper A, Caliper B, Caliper C, Caliper D)
{
//A & C intersect
//Top right
PointF one = Utility.PointOfIntersection(A, C);
//A & D intersect
//Top left
PointF two = Utility.PointOfIntersection(A, D);
//B & C
//Bottom right
PointF three = Utility.PointOfIntersection(B, C);
//B & D
//Bottom left
PointF four = Utility.PointOfIntersection(B, D);
//Only need d1 and d3.
double d1 = EuclideanDistance(one, three);
double d2 = EuclideanDistance(three, four);
double d3 = EuclideanDistance(four, two);
double d4 = EuclideanDistance(two, one);
return(d1 + d2 + d3 + d4);
}
/// <summary>
/// Point where two lines intersect is given by
/// //x = (b2 - b1) / ( m1 - m2) ... then plug in for y
/// </summary>
/// <param name="One"></param>
/// <param name="Two"></param>
/// <returns></returns>
public static PointF PointOfIntersection(Caliper One, Caliper Two)
{
double x;
double y;
//0 slope Horizontal line
if ((One.Slope - Two.Slope) == 0)
{
x = 0;
// y = b
y = One.B;
}
//Vertical line
else if (One.Slope == 12345679)
{
x = One.CenterPoint.X;
y = Two.Slope * x + Two.B;
}
//Vertical Line
else if (Two.Slope == 123456789)
{
x = Two.CenterPoint.X;
y = One.Slope * x + One.B;
}
else
{
x = (Two.B - One.B) / (One.Slope - Two.Slope);
//y = mx + b
y = One.Slope * x + One.B;
}
return(new PointF((float)x, (float)y));
}
public RectangleStruct(Caliper C1, Caliper C2, Caliper C3, Caliper C4, double minimum)
{
this.C1 = C1;
this.C2 = C2;
this.C3 = C3;
this.C4 = C4;
//one of hte two will be right it doesnt matter which because we nly call this with one
//of the two algorithm
this.MinimumArea = minimum;
this.MinimumPerim = minimum;
}
public RectangleStruct(Caliper C1, Caliper C2, Caliper C3, Caliper C4, double minimum)
{
this.C1 = C1;
this.C2 = C2;
this.C3 = C3;
this.C4 = C4;
//one of hte two will be right it doesnt matter which because we nly call this with one
//of the two algorithm
this.MinimumArea = minimum;
this.MinimumPerim = minimum;
}
public void SetC1(Caliper Cal)
{
C1 = new Caliper();
double d1 = Cal.CenterPoint.X;
double d2 = Cal.CenterPoint.Y;
C1.CenterPoint = new PointF((float)d1, (float)d2);
d1 = Cal.P1.X;
d2 = Cal.P1.Y;
C1.P1 = new PointF((float)d1, (float)d2);
d1 = Cal.P2.X;
d2 = Cal.P2.Y;
C1.P2 = new PointF((float)d1, (float)d2);
}
public void SetC4(Caliper Cal)
{
C4 = new Caliper();
double d1 = Cal.CenterPoint.X;
double d2 = Cal.CenterPoint.Y;
C4.CenterPoint = new PointF((float)d1, (float)d2);
d1 = Cal.P1.X;
d2 = Cal.P1.Y;
C4.P1 = new PointF((float)d1, (float)d2);
d1 = Cal.P2.X;
d2 = Cal.P2.Y;
C4.P2 = new PointF((float)d1, (float)d2);
}