private void Convert()
{
var cnt = points.Count / 5.0;
var pts = new List <Vector4>();
for (int i = 0; i < cnt; i++)
{
pts.Add(points[i * 5]);
}
if (cyclic)
{
pts.Add(points[0]);
}
var interp = new BsplineInterpolator(pts.Select(x => scene.CreateCatPoint(P.GetPosition(x.X, x.Y))), scene);
scene.AddNewModel(interp);
//scene.RemoveModel(this);
}
private void ConvertToBSpline(SceneData scene)
{
int widthPoints = UDensity + 3;
int heightPoints = VDensity + 3;
if (changed || points.Count < 1)
{
GenerateModel();
}
var pts = new Vector3[heightPoints - 2, widthPoints - 2];
for (int i = 0; i < UDensity + 1; i++)
{
for (int j = 0; j < VDensity + 1; j++)
{
pts[j, i] = points[i * 3 * (VDensity * 3 + 1) + j * 3];
}
}
var catPoints = new CatPoint[heightPoints, widthPoints];
var matrix = GetMatrix(false, new Vector3());
if (!Curved)
{
for (int i = 1; i < widthPoints - 1; i++)
{
for (int j = 1; j < heightPoints - 1; j++)
{
var pt = pts[(j - 1), (i - 1)];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
}
}
for (int i = 1; i < widthPoints - 1; i++)
{
int j = 0;
var pt = pts[0, i - 1] * 2 - pts[1, i - 1];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
j = heightPoints - 1;
pt = pts[j - 2, i - 1] * 2 - pts[j - 3, i - 1];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
}
for (int j = 1; j < heightPoints - 1; j++)
{
int i = 0;
var pt = pts[j - 1, 0] * 2 - pts[j - 1, 1];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
i = widthPoints - 1;
pt = pts[j - 1, i - 2] * 2 - pts[j - 1, i - 3];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
}
catPoints[0, 0] = scene.CreateCatPoint((matrix * new Vector4(pts[0, 0] * 2 - pts[1, 1])).ClipToVector3());
catPoints[heightPoints - 1, widthPoints - 1] = scene.CreateCatPoint(
(matrix * new Vector4(pts[pts.GetLength(0) - 1, pts.GetLength(1) - 1] * 2 -
pts[pts.GetLength(0) - 2, pts.GetLength(1) - 2])).ClipToVector3());
catPoints[0, widthPoints - 1] =
scene.CreateCatPoint((matrix * new Vector4(pts[0, pts.GetLength(1) - 1] * 2 - pts[1, pts.GetLength(1) - 2]))
.ClipToVector3());
catPoints[heightPoints - 1, 0] =
scene.CreateCatPoint((matrix * new Vector4(pts[pts.GetLength(0) - 1, 0] * 2 - pts[pts.GetLength(0) - 2, 1]))
.ClipToVector3());
}
else
{
int curvePoints = widthPoints - (IsCylinder ? 3 : 0);
Real angleStep = CurvatureAngle / curvePoints;
Real heightStep = Height / (heightPoints - 1);
//r * (4sqrt(2) / (6n))
Real newRadius = Radius * (1 + 2 * System.Math.Sqrt(2) / (3.0 * (double)(UDensity - 2)));
for (int i = 0; i < curvePoints; i++) //u
{
Real angle = Utils.DegToRad(i * angleStep - CurvatureAngle / 2);
Real x = newRadius * System.Math.Sin(angle);
for (int j = 0; j < heightPoints; j++) //v
{
Real y = heightStep * j - Height / 2;
Real z = newRadius * System.Math.Cos(angle);
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(x, y, z, 1.0)).ClipToVector3());
}
}
if (IsCylinder)
{
for (int j = 0; j < heightPoints; j++)
{
catPoints[j, widthPoints - 3] = catPoints[j, 0];
catPoints[j, widthPoints - 2] = catPoints[j, 1];
catPoints[j, widthPoints - 1] = catPoints[j, 2];
}
}
}
scene.RemoveModel(this);
var subArray = new CatPoint[4, 4];
var ptches = new Patch[VDensity, UDensity];
for (int i = 0; i < UDensity; i++) //u
{
for (int j = 0; j < VDensity; j++) //v
{
for (int x = 0; x < 4; x++)
{
for (int y = 0; y < 4; y++)
{
subArray[y, x] = catPoints[j + y, i + x];
}
}
var patch = new BSplinePatch(subArray)
{
UPos = i, VPos = j
};
scene.AddNewModel(patch);
ptches[j, i] = patch;
}
}
var catPointsList = new List <CatPoint>(catPoints.GetLength(0) * catPoints.GetLength(1));
foreach (var catPoint in catPoints)
{
catPointsList.Add(catPoint);
}
scene.AddNewModel(new Surface(SurfaceType.BSpline, ptches, catPointsList, scene, IsCylinder, false)
{
PatchesU = UDensity, PatchesV = VDensity
});
}
private void ConvertToBezierPatches(SceneData scene)
{
int widthPoints = UDensity * 3 + 1;
int heightPoints = VDensity * 3 + 1;
if (changed || points.Count == 0)
{
GenerateModel();
}
var catPoints = new CatPoint[heightPoints, widthPoints];
var matrix = GetMatrix(false, new Vector3());
if (!Curved)
{
for (int i = 0; i < widthPoints; i++)
{
for (int j = 0; j < heightPoints; j++)
{
var pt = points[i * heightPoints + j];
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
}
}
}
else
{
bool cylinder = System.Math.Abs(CurvatureAngle - 360) < Utils.Eps;
for (int i = 0; i < widthPoints - (cylinder ? 1 : 0); i++)
{
for (int j = 0; j < heightPoints; j++)
{
Vector3 pt;
if (i % 3 != 0)
{
int ai = i - i % 3;
int ci = ai + 3;
var p = (points[(ai + 1) * heightPoints + j] + points[(ai + 2) * heightPoints + j]);
var b = p - (points[ai * heightPoints + j] + points[ci * heightPoints + j]) / 2;
var pot = i % 3 == 1 ? points[ai * heightPoints + j] : points[ci * heightPoints + j];
pt = b * 2 / 3.0 + pot * 1 / 3.0;
}
else
{
pt = points[i * heightPoints + j];
}
catPoints[j, i] = scene.CreateCatPoint((matrix * new Vector4(pt)).ClipToVector3());
}
}
if (cylinder)
{
for (int j = 0; j < heightPoints; j++)
{
catPoints[j, widthPoints - 1] = catPoints[j, 0];
}
}
}
scene.RemoveModel(this);
var subArray = new CatPoint[4, 4];
var ptchs = new Patch[VDensity, UDensity];
for (int i = 0; i < UDensity; i++)
{
for (int j = 0; j < VDensity; j++)
{
for (int x = 0; x < 4; x++)
{
for (int y = 0; y < 4; y++)
{
subArray[y, x] = catPoints[j * 3 + y, i * 3 + x];
}
}
var patch = new BezierPatch(subArray)
{
UPos = i,
VPos = j
};
scene.AddNewModel(patch);
ptchs[j, i] = patch;
}
}
var catPointsList = new List <CatPoint>(catPoints.GetLength(0) * catPoints.GetLength(1));
foreach (var catPoint in catPoints)
{
catPointsList.Add(catPoint);
}
scene.AddNewModel(new Surface(SurfaceType.Bezier, ptchs, catPointsList, scene, IsCylinder, false)
{
PatchesU = UDensity, PatchesV = VDensity
});
}
