/// <summary>
/// Constructs the parallelogram by the corner and two sides.
/// </summary>
/// <param name="corner">the corner</param>
/// <param name="sideA">a side</param>
/// <param name="sideB">another side</param>
public Parallelogram(Point corner, Point sideA, Point sideB) {
this.corner = corner;
this.a = sideA;
this.b = sideB;
this.aRot = new Point(-sideA.Y, sideA.X);
if (aRot.Length > 0.5)
aRot = aRot.Normalize();
this.bRot = new Point(-sideB.Y, sideB.X);
if (bRot.Length > 0.5)
bRot = bRot.Normalize();
abRot = sideA * bRot;
baRot = sideB * aRot;
if (abRot < 0) {
abRot = -abRot;
bRot = -bRot;
}
if (baRot < 0) {
baRot = -baRot;
aRot = -aRot;
}
isSeg = (sideA - sideB).Length < ApproximateComparer.DistanceEpsilon;
aPlusCorner = sideA + corner;
otherCorner = sideB +aPlusCorner;
bPlusCorner = sideB + corner;
}
internal Parallelogram(Parallelogram box0, Parallelogram box1) {
Point v = box0.Corner;
double minX, maxX, minY, maxY;
minX = maxX = v.X;
minY = maxY = v.Y;
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box0.aPlusCorner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box0.otherCorner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box0.bPlusCorner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box1.corner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box1.aPlusCorner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box1.otherCorner);
PumpMinMax(ref minX, ref maxX, ref minY, ref maxY, ref box1.bPlusCorner);
this.corner = new Point(minX, minY);
this.a = new Point(0, maxY - minY);
this.b = new Point(maxX - minX, 0);
aPlusCorner = a + corner;
otherCorner = b + aPlusCorner;
bPlusCorner = b + corner;
this.aRot = new Point(-this.a.Y, this.a.X);
if (aRot.Length > 0.5)
aRot = aRot.Normalize();
this.bRot = new Point(-this.b.Y, this.b.X);
if (bRot.Length > 0.5)
bRot = bRot.Normalize();
abRot = this.a * bRot;
baRot = this.b * aRot;
if (abRot < 0) {
abRot = -abRot;
bRot = -bRot;
}
if (baRot < 0) {
baRot = -baRot;
aRot = -aRot;
}
isSeg = (this.a - this.b).Length < ApproximateComparer.DistanceEpsilon;
}
public virtual float Density(ref Point Pobj) {
return 0.1f * (1f / NoiseProvider.Instance.Noise((Vector)Pobj.Normalize()));
}
