public static ObliqueTriangle ConstructFromVertexPositions(
Point Pos1, Point Pos2, Point Pos3)
{
// setup the left most vertex, then the upper vertex and lower vertex.
var rv = ObliqueTriangle.SplitLeftMostPoint(new Point[] { Pos1, Pos2, Pos3 });
Point pt1 = rv.Item1; // pt1 is left most point
var rv2 = ObliqueTriangle.SplitTopMostPoint(rv.Item2);
Point pt2 = rv2.Item1; // pt2 is top most point of pt2 and pt3.
Point pt3 = rv2.Item2[0];
// Create lines between the points. Line numbers match the number of the opposite
// point.
LineCoordinates line1 = new LineCoordinates(pt2, pt3);
LineCoordinates line2 = new LineCoordinates(pt1, pt3);
LineCoordinates line3 = new LineCoordinates(pt1, pt2);
// the angle of each vertex.
var ang1 = LineCoordinates.AngleBetween(line2, line3);
var ang2 = LineCoordinates.AngleBetween(line1, line3);
var ang3 = LineCoordinates.AngleBetween(line2, line1);
var vertex1 = new TriangleVertex()
{
Angle = ang1,
Location = pt1,
Line = line1
};
var vertex2 = new TriangleVertex()
{
Angle = ang2,
Location = pt2,
Line = line2
};
var vertex3 = new TriangleVertex()
{
Angle = ang3,
Location = pt3,
Line = line3
};
var ot = new ObliqueTriangle()
{
Vertex1 = vertex1,
Vertex2 = vertex2,
Vertex3 = vertex3
};
return(ot);
}
/// <summary>
/// Construct an ObliqueTriangle from three lines. If the end points of all the
/// lines do not meet to form a triangle, return null.
/// </summary>
/// <param name="Line1"></param>
/// <param name="Line2"></param>
/// <param name="Line3"></param>
/// <returns></returns>
public static ObliqueTriangle TryConstructFromLines(
LineCoordinates Line1, LineCoordinates Line2, LineCoordinates Line3)
{
ObliqueTriangle ot = null;
// line up the points of the lines
var linePoints = new Point[] { Line1.Start, Line1.End, Line2.Start, Line2.End,
Line3.Start, Line3.End };
// start of line1 matches the end points of the other 2 lines.
return(ot);
}