void AdjustCurrentBundleWidthsOnCurve(List <BundleBase> bases)
{
int count = bases.Count;
if (count <= 1)
{
return;
}
for (int i = 0; i < count; i++)
{
BundleBase rBase = bases[i];
BundleBase lBase = rBase.Next;
ShrinkBasesToMakeTwoConsecutiveNeighborsHappy(rBase, lBase);
Debug.Assert(!rBase.Intersect(lBase));
}
}
void ShrinkBasesToMakeTwoConsecutiveNeighborsHappy(BundleBase rBase, BundleBase lBase) {
if (!rBase.Intersect(lBase))
return;
//segments are now [l1..r1] and [l2..r2]
double l1 = rBase.ParRight;
double r1 = rBase.ParLeft;
double l2 = lBase.ParRight;
double r2 = lBase.ParLeft;
double span = lBase.ParameterSpan;
//make them regular
if (l1 > r1)
l1 -= span;
if (l2 > r2)
l2 -= span;
//make them intersecting
if (l2 > r1) {
l2 -= span;
r2 -= span;
}
if (l1 > r2) {
l1 -= span;
r1 -= span;
}
//they do intersect!
Debug.Assert(!(l2 >= r1) && !(l1 >= r2));
double t = RegularCut(l1, r1, l2, r2, rBase.Span, lBase.Span);
TriangleOrientation to = Point.GetTriangleOrientation(lBase.CurveCenter, lBase.OppositeBase.InitialMidPoint, rBase.OppositeBase.InitialMidPoint);
if (to == TriangleOrientation.Clockwise) {
r1 = t;
l2 = t;
}
else if (to == TriangleOrientation.Counterclockwise) {
r2 = t;
l1 = t;
}
else {
if (r2 - l1 >= r1 - l2) {
r1 = t;
l2 = t;
}
else {
r2 = t;
l1 = t;
}
}
Debug.Assert(!rBase.Intersect(l1, r1, l2, r2));
lBase.ParRight = lBase.AdjustParam(l2);
lBase.ParLeft = lBase.AdjustParam(r2);
rBase.ParRight = rBase.AdjustParam(l1);
rBase.ParLeft = rBase.AdjustParam(r1);
}
void ShrinkBasesToMakeTwoConsecutiveNeighborsHappy(BundleBase rBase, BundleBase lBase)
{
if (!rBase.Intersect(lBase))
{
return;
}
//segments are now [l1..r1] and [l2..r2]
double l1 = rBase.ParRight;
double r1 = rBase.ParLeft;
double l2 = lBase.ParRight;
double r2 = lBase.ParLeft;
double span = lBase.ParameterSpan;
//make them regular
if (l1 > r1)
{
l1 -= span;
}
if (l2 > r2)
{
l2 -= span;
}
//make them intersecting
if (l2 > r1)
{
l2 -= span;
r2 -= span;
}
if (l1 > r2)
{
l1 -= span;
r1 -= span;
}
//they do intersect!
Debug.Assert(!(l2 >= r1) && !(l1 >= r2));
double t = RegularCut(l1, r1, l2, r2, rBase.Span, lBase.Span);
TriangleOrientation to = Point.GetTriangleOrientation(lBase.CurveCenter, lBase.OppositeBase.InitialMidPoint, rBase.OppositeBase.InitialMidPoint);
if (to == TriangleOrientation.Clockwise)
{
r1 = t;
l2 = t;
}
else if (to == TriangleOrientation.Counterclockwise)
{
r2 = t;
l1 = t;
}
else
{
if (r2 - l1 >= r1 - l2)
{
r1 = t;
l2 = t;
}
else
{
r2 = t;
l1 = t;
}
}
Debug.Assert(!rBase.Intersect(l1, r1, l2, r2));
lBase.ParRight = lBase.AdjustParam(l2);
lBase.ParLeft = lBase.AdjustParam(r2);
rBase.ParRight = rBase.AdjustParam(l1);
rBase.ParLeft = rBase.AdjustParam(r1);
}