public static PointModel CalculatePointByTwoLines(LineModel lineA, LineModel lineB)
{
var x = (lineB.b - lineA.b) / (lineA.a - lineB.a);
var y = lineA.CalculateY(x);
return(new PointModel(x, y));
}
private void DrawLineByLine(ref Graphics graphic, Pen pen, LineModel line)
{
var maxY = line.CalculateY(maxCoordinateSystemLength);
PointModel maxNegativePoint, maxPositivePoint;
if (Math.Abs(maxY) > maxCoordinateSystemLength)
{
maxNegativePoint = new PointModel(line.CalculateX(-1 * maxCoordinateSystemLength), -1 * maxCoordinateSystemLength);
maxPositivePoint = new PointModel(line.CalculateX(maxCoordinateSystemLength), maxCoordinateSystemLength);
}
else
{
maxNegativePoint = new PointModel(-1 * maxCoordinateSystemLength, line.CalculateY(-1 * maxCoordinateSystemLength));
maxPositivePoint = new PointModel(maxCoordinateSystemLength, line.CalculateY(maxCoordinateSystemLength));
}
DrawLineByPoint(ref graphic, pen, maxNegativePoint, maxPositivePoint);
}
public static double CalculateDirectionFromLine(LineModel line)
{
var throughZeroLine = new LineModel(line.a, 0, line.lineDirection);
double x = 100.00;
var y = throughZeroLine.CalculateY(x);
if (y == 0)
{
return(0);
}
var tan = Math.Abs(x / y);
var angle = MathOperation.TanH(tan);
if (line.a > 0)
{
var direction = angle;
if (line.lineDirection == LineDirection.RIGHT_TO_LEFT)
{
direction = direction + 180;
}
if (direction > 360)
{
direction = direction - 360;
}
return(Math.Round(direction, 2));
}
else
{
var direction = 360 - angle;
if (line.lineDirection == LineDirection.LEFT_TO_RIGHT)
{
direction = direction - 180;
}
if (direction > 360)
{
direction = direction - 360;
}
return(Math.Round(direction, 2));
}
}
public static PointModel CalculatePointByLineAndLength(LineModel line, PointModel point, double length, LineDirection direction)
{
double x2;
if (direction == LineDirection.LEFT_TO_RIGHT)
{
x2 = point.x + length / Math.Sqrt(1 + line.a * line.a);
}
else
{
x2 = point.x - length / Math.Sqrt(1 + line.a * line.a);
}
double y2 = line.CalculateY(x2);
PointModel result = new PointModel(x2, y2);
return(result);
}