public static IsoscelesTrapezoid ConstructDefaultIsoscelesTrapezoid()
{
int base1 = Figure.DefaultSideLength();
int side = Figure.DefaultSideLength();
// Ensure a smaller side then base for a 'normal' look.
while (base1 <= side)
{
base1 = Figure.DefaultSideLength();
side = Figure.DefaultSideLength();
}
int baseAngle = Figure.DefaultFirstQuadrantNonRightAngle();
Point topLeft = Figure.GetPointByLengthAndAngleInStandardPosition(side, baseAngle);
topLeft = PointFactory.GeneratePoint(topLeft.X, topLeft.Y);
Point topRight = Figure.GetPointByLengthAndAngleInThirdQuadrant(side, baseAngle);
topRight = PointFactory.GeneratePoint(base1 + topRight.X, topRight.Y);
Point bottomRight = PointFactory.GeneratePoint(base1, 0);
Segment left = new Segment(origin, topLeft);
Segment top = new Segment(topLeft, topRight);
Segment right = new Segment(topRight, bottomRight);
Segment bottom = new Segment(bottomRight, origin);
return(new IsoscelesTrapezoid(left, right, top, bottom));
}
////
//// Force this segment into standard position; only 1st and second quadrants allowed.
////
//public Segment Standardize()
//{
// Point vector = Point.MakeVector(this.Point1, this.Point2);
// // If this segment is in the 3rd or 4th quadrant, force into the second by taking the opposite.
// if (vector.Y < 0) vector = Point.GetOppositeVector(vector);
// return new Segment(origin, vector);
//}
public Segment ConstructSegmentByAngle(Point tail, int angle, int length)
{
// Make a vector in standard position
Point vector = Point.MakeVector(tail, this.OtherPoint(tail));
// Calculate the angle from standard position.
double stdPosAngle = Point.GetDegreeStandardAngleWithCenter(origin, vector);
// Get the exact point we want.
Point rotatedPoint = Figure.GetPointByLengthAndAngleInStandardPosition(length, stdPosAngle - angle);
return(new Segment(tail, rotatedPoint));
}
public static EquilateralTriangle ConstructDefaultEquilateralTriangle()
{
int sideLength = Figure.DefaultSideLength();
Point top = Figure.GetPointByLengthAndAngleInStandardPosition(sideLength, 60);
top = PointFactory.GeneratePoint(top.X, top.Y);
Point bottomRight = PointFactory.GeneratePoint(sideLength, 0);
Segment left = new Segment(origin, top);
Segment right = new Segment(top, bottomRight);
Segment bottom = new Segment(bottomRight, origin);
return(new EquilateralTriangle(left, right, bottom));
}
public static Rhombus ConstructDefaultRhombus()
{
int sideLength = Figure.DefaultSideLength();
int baseAngle = Figure.DefaultFirstQuadrantNonRightAngle();
Point topLeft = Figure.GetPointByLengthAndAngleInStandardPosition(sideLength, baseAngle);
double offsetX = topLeft.X;
double offsetY = topLeft.Y;
topLeft = PointFactory.GeneratePoint(topLeft.X, topLeft.Y);
Point topRight = PointFactory.GeneratePoint(offsetX + sideLength, offsetY);
Point bottomRight = PointFactory.GeneratePoint(sideLength, 0);
Segment left = new Segment(origin, topLeft);
Segment top = new Segment(topLeft, topRight);
Segment right = new Segment(topRight, bottomRight);
Segment bottom = new Segment(bottomRight, origin);
return(new Rhombus(left, right, top, bottom));
}
