private static void DoCubicMidpointSubdivision(Point[] controlPoints, uint depth, double inverseErrorTolerance, List <Point> resultPolyline)
{
Point[] controlPoints1 = new Point[4]
{
controlPoints[0],
controlPoints[1],
controlPoints[2],
controlPoints[3]
};
Point[] controlPoints2 = new Point[4];
controlPoints2[3] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints1[2] = VectorUtilities.Midpoint(controlPoints1[2], controlPoints1[1]);
controlPoints1[1] = VectorUtilities.Midpoint(controlPoints1[1], controlPoints1[0]);
controlPoints2[2] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints1[2] = VectorUtilities.Midpoint(controlPoints1[2], controlPoints1[1]);
controlPoints2[1] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints2[0] = controlPoints1[3];
--depth;
if (depth > 0U)
{
BezierCurveFlattener.DoCubicMidpointSubdivision(controlPoints1, depth, inverseErrorTolerance, resultPolyline);
resultPolyline.Add(controlPoints2[0]);
BezierCurveFlattener.DoCubicMidpointSubdivision(controlPoints2, depth, inverseErrorTolerance, resultPolyline);
}
else
{
BezierCurveFlattener.DoCubicForwardDifferencing(controlPoints1, inverseErrorTolerance, resultPolyline);
resultPolyline.Add(controlPoints2[0]);
BezierCurveFlattener.DoCubicForwardDifferencing(controlPoints2, inverseErrorTolerance, resultPolyline);
}
}
private static void DoCubicMidpointSubdivision(Point[] controlPoints, uint depth, double leftParameter, double rightParameter, double inverseErrorTolerance, List <Point> resultPolyline, List <double> resultParameters)
{
Point[] controlPoints1 = new Point[4]
{
controlPoints[0],
controlPoints[1],
controlPoints[2],
controlPoints[3]
};
Point[] controlPoints2 = new Point[4];
controlPoints2[3] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints1[2] = VectorUtilities.Midpoint(controlPoints1[2], controlPoints1[1]);
controlPoints1[1] = VectorUtilities.Midpoint(controlPoints1[1], controlPoints1[0]);
controlPoints2[2] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints1[2] = VectorUtilities.Midpoint(controlPoints1[2], controlPoints1[1]);
controlPoints2[1] = controlPoints1[3];
controlPoints1[3] = VectorUtilities.Midpoint(controlPoints1[3], controlPoints1[2]);
controlPoints2[0] = controlPoints1[3];
--depth;
double num = (leftParameter + rightParameter) * 0.5;
if (depth > 0U)
{
BezierCurveFlattener.DoCubicMidpointSubdivision(controlPoints1, depth, leftParameter, num, inverseErrorTolerance, resultPolyline, resultParameters);
resultPolyline.Add(controlPoints2[0]);
resultParameters.Add(num);
BezierCurveFlattener.DoCubicMidpointSubdivision(controlPoints2, depth, num, rightParameter, inverseErrorTolerance, resultPolyline, resultParameters);
}
else
{
BezierCurveFlattener.DoCubicForwardDifferencing(controlPoints1, leftParameter, num, inverseErrorTolerance, resultPolyline, resultParameters);
resultPolyline.Add(controlPoints2[0]);
resultParameters.Add(num);
BezierCurveFlattener.DoCubicForwardDifferencing(controlPoints2, num, rightParameter, inverseErrorTolerance, resultPolyline, resultParameters);
}
}