public void CreateToUniform()
{
KnotSet knotSet = null;
int degree = int.MinValue;
int numControlPoints = int.MinValue;
double[] r = null;
double[] a = null;
numControlPoints = 3;
degree = 2;
knotSet = KnotSet.CreateToUniform(degree, numControlPoints);
r = knotSet.GetKnotArray();
a = new double[] { 0, 0, 0, 1, 1, 1 };
Assert.IsTrue(r.SequenceEqual(a));
numControlPoints = 4;
degree = 2;
knotSet = KnotSet.CreateToUniform(degree, numControlPoints);
r = knotSet.GetKnotArray();
a = new double[] { 0, 0, 0, 0.5, 1, 1, 1 };
Assert.IsTrue(r.SequenceEqual(a));
numControlPoints = 8;
degree = 3;
knotSet = KnotSet.CreateToUniform(degree, numControlPoints);
r = knotSet.GetKnotArray();
a = new double[] { 0, 0, 0, 0, 0.2, 0.4, 0.6, 0.8, 1, 1, 1, 1 };
Assert.IsTrue(r.SequenceEqual(a));
}
public void ParameterAt()
{
double[][][] ptGrid = null;
double[] r, a;
double u, v, e;
BSplineSurface surface = null;
int uDegree, vDegree;
KnotSet uKnot, vKnot;
uDegree = 2;
vDegree = 3;
uKnot = KnotSet.CreateToUniform(uDegree, 3);
vKnot = KnotSet.CreateToUniform(vDegree, 5);
ptGrid = new double[][][]
{
new double[][] {
new double[] { 0.0, 0.0, 1.0 },
new double[] { 0.0, 1.0, 2.0 },
new double[] { 0.0, 2.0, 0.0 },
new double[] { 0.0, 3.0, 1.0 },
new double[] { 0.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 1.0, 0.0, 2.0 },
new double[] { 1.0, 1.0, 2.0 },
new double[] { 1.0, 2.0, 1.0 },
new double[] { 1.0, 3.0, 1.0 },
new double[] { 1.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 2.0, 0.0, 2.0 },
new double[] { 2.0, 1.0, 1.0 },
new double[] { 2.0, 2.0, 1.0 },
new double[] { 2.0, 3.0, 1.0 },
new double[] { 2.0, 4.0, 2.0 },
},
};
u = 0.3;
v = 0.4;
e = 0.0001;
surface = new BSplineSurface(ptGrid, uKnot, vKnot, uDegree, vDegree);
r = surface.ParameterAt(u, v);
a = new double[] { 0.6, 1.696, 1.16312 };
Assert.IsTrue(r.SequenceEqual(a, e));
uDegree = 2;
vDegree = 3;
uKnot = KnotSet.CreateToUniform(uDegree, 3);
vKnot = KnotSet.CreateToUniform(vDegree, 5);
ptGrid = new double[][][]
{
new double[][] {
new double[] { 0.0, 0.0, 1.0 },
new double[] { 0.0, 1.0, 2.0 },
new double[] { 0.0, 2.0, 0.0 },
new double[] { 0.0, 3.0, 1.0 },
new double[] { 0.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 1.0, 0.0, 2.0 },
new double[] { 1.0, 1.0, 2.0 },
new double[] { 1.0, 2.0, 1.0 },
new double[] { 1.0, 3.0, 1.0 },
new double[] { 1.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 2.0, 0.0, 2.0 },
new double[] { 2.0, 1.0, 1.0 },
new double[] { 2.0, 2.0, 1.0 },
new double[] { 2.0, 3.0, 1.0 },
new double[] { 2.0, 4.0, 2.0 },
},
};
u = 1;
v = 0;
e = 0.0001;
surface = new BSplineSurface(ptGrid, uKnot, vKnot, uDegree, vDegree);
r = surface.ParameterAt(u, v);
a = new double[] { 2, 0, 2 };
Assert.IsTrue(r.SequenceEqual(a, e));
uDegree = 2;
vDegree = 3;
uKnot = KnotSet.CreateToUniform(uDegree, 3);
vKnot = KnotSet.CreateToUniform(vDegree, 5);
ptGrid = new double[][][]
{
new double[][] {
new double[] { 0.0, 0.0, 1.0 },
new double[] { 0.0, 1.0, 2.0 },
new double[] { 0.0, 2.0, 0.0 },
new double[] { 0.0, 3.0, 1.0 },
new double[] { 0.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 1.0, 0.0, 2.0 },
new double[] { 1.0, 1.0, 2.0 },
new double[] { 1.0, 2.0, 1.0 },
new double[] { 1.0, 3.0, 1.0 },
new double[] { 1.0, 4.0, 1.0 },
},
new double[][] {
new double[] { 2.0, 0.0, 2.0 },
new double[] { 2.0, 1.0, 1.0 },
new double[] { 2.0, 2.0, 1.0 },
new double[] { 2.0, 3.0, 1.0 },
new double[] { 2.0, 4.0, 2.0 },
},
};
u = 1;
v = 1;
e = 0.0001;
surface = new BSplineSurface(ptGrid, uKnot, vKnot, uDegree, vDegree);
r = surface.ParameterAt(u, v);
a = new double[] { 2, 4, 2 };
Assert.IsTrue(r.SequenceEqual(a, e));
}