private PVector GetNewDrawingPoint(PVector p, PVector next, int n)
{
var rnd = new Random(n*10);
var rndx2 = new Random(n * 452);
var rndy = new Random(n * 70);
var rndy2 = new Random(n * 750);
PVector direction = PVector.Sub(next, p);
PVector newPosition = direction.Copy();
newPosition.SetMag((GetRandomized(rnd, rndx2) - 0.5) * _BrushInfoService.XDispersion);
PVector ymov = direction.Copy();
ymov.RotateDegrees(90);
ymov.SetMag((GetRandomized(rndy, rndy2) - 0.5) * _BrushInfoService.YDispersion);
newPosition.Add(ymov);
newPosition.Add(p);
return newPosition;
}
public void ShouldStaticallyLinearInterpoleTwoVectorsByGivenAmmountAndDontChangeOriginalVectors()
{
PVector vectorA = new PVector(1, 2, 3);
PVector vectorACopy = vectorA.Copy();
PVector vectorB = new PVector(5, 6, 7);
PVector vectorBCopy = vectorB.Copy();
float ammount = 0.5f;
PVector resultVector = PVector.Lerp(vectorA, vectorB, ammount);
// vectorA should not be changed
Assert.Equal(vectorACopy.X, vectorA.X);
Assert.Equal(vectorACopy.Y, vectorA.Y);
Assert.Equal(vectorACopy.Z, vectorA.Z);
// vectorB should not be changed
Assert.Equal(vectorBCopy.X, vectorB.X);
Assert.Equal(vectorBCopy.Y, vectorB.Y);
Assert.Equal(vectorBCopy.Z, vectorB.Z);
Assert.NotNull(resultVector);
Assert.Equal(3f, resultVector.X);
Assert.Equal(4f, resultVector.Y);
Assert.Equal(5f, resultVector.Z);
}
public void ShouldSetMagnitudeOfTargetVectorWithoutChangingActualVector()
{
PVector vectorA = new PVector(1, 2, 2);
float originalVectorAMagnitude = vectorA.Mag(); // Magnitude 3
PVector vectorACopy = vectorA.Copy();
PVector targetVector = new PVector(3, 4, 0);
float originalTargetVectorMagnitude = targetVector.Mag(); // Magnitude 5
float desiredNewMagnitude = 8f;
PVector resultVector = vectorA.SetMag(targetVector, desiredNewMagnitude);
float resultMagnitude = resultVector.Mag();
//Vector A should not change
Assert.Equal(originalVectorAMagnitude, vectorA.Mag());
Assert.Equal(vectorACopy.X, vectorA.X);
Assert.Equal(vectorACopy.Y, vectorA.Y);
Assert.Equal(vectorACopy.Z, vectorA.Z);
Assert.Same(targetVector, resultVector);
Assert.NotEqual(originalTargetVectorMagnitude, resultMagnitude);
Assert.Equal(desiredNewMagnitude, resultMagnitude);
}
public void ShouldCopyComponentsFrom3dVector()
{
PVector originalVector = new PVector(10, 20.30f, 40.5678f);
PVector copyVector = originalVector.Copy();
Assert.NotEqual(originalVector, copyVector);
Assert.Equal(originalVector.X, copyVector.X);
Assert.Equal(originalVector.Y, copyVector.Y);
Assert.Equal(originalVector.Z, copyVector.Z);
}
public void ShouldReturnNormalizedVectorWithoutChangingActrualVector()
{
PVector vectorA = new PVector(3, 4, 5);
PVector vectorACopy = vectorA.Copy();
float originalMagnitude = vectorA.Mag();
PVector targetVector = new PVector(5, 5, 5);
PVector normalizedVector = vectorA.Normalize(targetVector);
//Vector A should not change
Assert.Equal(originalMagnitude, vectorA.Mag());
Assert.Equal(vectorACopy.X, vectorA.X);
Assert.Equal(vectorACopy.Y, vectorA.Y);
Assert.Equal(vectorACopy.Z, vectorA.Z);
Assert.Same(normalizedVector, targetVector);
Assert.NotEqual(1f, targetVector.Mag());
}
public void ShouldCalculateDotProductOfTwoVectors()
{
PVector aVector = new PVector(3, 4, 5);
PVector copyOfA = aVector.Copy();
PVector bVector = new PVector(1, 2, 3);
PVector copyOfB = bVector.Copy();
float dotProduct = PVector.Dot(aVector, bVector);
Assert.Equal(26f, dotProduct);
Assert.Equal(copyOfA.X, aVector.X);
Assert.Equal(copyOfA.Y, aVector.Y);
Assert.Equal(copyOfA.Z, aVector.Z);
Assert.Equal(copyOfB.X, bVector.X);
Assert.Equal(copyOfB.Y, bVector.Y);
Assert.Equal(copyOfB.Z, bVector.Z);
}
public Segment(PVector a_, PVector b_)
{
a = a_.Copy();
b = b_.Copy();
}