private void CheckNotSegmentException(FixedVertex2D a, FixedVertex2D b)
{
if (a.Coordinates == b.Coordinates)
{
throw new System.Exception("Begin == End");
}
}
//TODO: I can use CheckNotTriangleException but i don't know is it neccessary
private void CheckNotTriangleException(FixedVertex2D a, FixedVertex2D b, FixedVertex2D c)
{
FixedVector2 ab = a.GetDirectionTo(b);
FixedVector2 ac = a.GetDirectionTo(c);
if ((ab.x * ac.y - ab.y * ac.x).IsZero())
{
throw new System.ArgumentException("This set of vertices can't form the triangle");
}
}
public FixedRectangle2D(Fixed leftX, Fixed bottomY, Fixed width, Fixed height)
{
FixedVector2 a = new FixedVector2(leftX, bottomY);
FixedVector2 b = new FixedVector2(leftX + width, bottomY);
FixedVector2 c = new FixedVector2(leftX + width, bottomY + height);
FixedVector2 d = new FixedVector2(leftX, bottomY + height);
this.a = new FixedVertex2D(a);
this.b = new FixedVertex2D(b);
this.c = new FixedVertex2D(c);
this.d = new FixedVertex2D(d);
abc = new FixedTriangle2D(this.a, this.b, this.c);
acd = new FixedTriangle2D(this.a, this.c, this.d);
}
public FixedTriangle2D(FixedVertex2D a, FixedVertex2D b, FixedVertex2D c)
{
if (a == null || b == null || c == null)
{
throw new System.ArgumentNullException("a==null||b==null||c==null");
}
//CheckNotTriangleException (a,b,c);
this.a = a;
this.b = b;
this.c = c;
this.a.AddVertex2DChangeListener(this);
this.b.AddVertex2DChangeListener(this);
this.c.AddVertex2DChangeListener(this);
}
public FixedSegment2D(FixedVertex2D begin, FixedVertex2D end)
{
if (begin == null || end == null)
{
throw new System.ArgumentNullException();
}
if (begin.Coordinates == end.Coordinates)
{
throw new System.Exception("End == Begin");
}
this.begin = begin;
this.end = end;
this.begin.AddVertex2DChangeListener(this);
this.end.AddVertex2DChangeListener(this);
}
public FixedCircle2D(FixedVertex2D center, Fixed radius)
{
this.Radius = radius;
this.Center = center;
}
public FixedVector2 GetDirectionTo(FixedVertex2D v)
{
return(new FixedVector2(v.coordinates.x - coordinates.x, v.coordinates.y - coordinates.y));
}
public void Vertex2DChangedEvent(FixedVertex2D vertex)
{
directionalVectorsRecalculationRequired = true;
}
public void Vertex2DChangedEvent(FixedVertex2D vertex)
{
ActivateRecalculationFlags();
}