public subNode sub()
{
var token = lexer.GetToken();
if (token.Id == 3 || token.Id == 2)
{
var text = "";
var arg0 = mul();
text += arg0.Text;
var arg1 = sub2();
text += arg1.Text;
var result = new subNode(text, null, arg0, arg1);
result.mul = arg0;
result.sub2 = arg1;
result.res = result.sub2.res.Sub(result.mul.res);
token = lexer.GetToken();
if (token.Id != -1 && token.Id != 4)
{
throw new ParserException("Got unxpected token from lexer");
}
return(result);
}
throw new ParserException("Got unxpected token from lexer");
//return null
}
public void Parametrize(int fromSegmentIndex, int toSegmentIndex)
{
if (nodes.Count < MinimumKnotNb)
{
return;
}
int nbSegments = System.Math.Min(toSegmentIndex + 1, NbSegments);
fromSegmentIndex = System.Math.Max(0, fromSegmentIndex);
float totalDistance = 0;
if (fromSegmentIndex > 0)
{
totalDistance = GetSegmentDistanceFromStart(fromSegmentIndex - 1);
}
for (int i = fromSegmentIndex; i < nbSegments; i++)
{
subNode[] subKnots = GetSegmentSubKnots(i);
for (int j = 0; j < subKnots.Length; j++)
{
subNode sk = new subNode();
sk.distanceFromStart = totalDistance += CalcSegmentLen(i, (j - 1) * Epsilon, j * Epsilon);
sk.position = GetPositionOnSegment(i, j * Epsilon);
sk.tangent = GetTangentOnSegment(i, j * Epsilon);
subKnots[j] = sk;
}
nodes[FirstSegmentKnotIndex + i].distanceFromStart = totalDistance;
}
}
public bool PlaceMarker(Marker result, float distance, Marker from = null)
{
subNode[] subNodes;
int nbSegments = NbSegments;
if (nbSegments == 0)
{
return(false);
}
if (distance <= 0)
{
result.segmentIndex = 0;
result.subKnotAIndex = 0;
result.subKnotBIndex = 1;
result.lerpRatio = 0f;
return(true);
}
else if (distance >= Length())
{
subNodes = GetSegmentSubKnots(nbSegments - 1);
result.segmentIndex = nbSegments - 1;
result.subKnotAIndex = subNodes.Length - 2;
result.subKnotBIndex = subNodes.Length - 1;
result.lerpRatio = 1f;
return(true);
}
int fromSegmentIndex = 0;
int fromSubKnotIndex = 1;
if (from != null)
{
fromSegmentIndex = from.segmentIndex;
}
for (int i = fromSegmentIndex; i < nbSegments; i++)
{
if (distance > GetSegmentDistanceFromStart(i))
{
continue;
}
subNodes = GetSegmentSubKnots(i);
for (int j = fromSubKnotIndex; j < subNodes.Length; j++)
{
subNode sk = subNodes[j];
if (distance > sk.distanceFromStart)
{
continue;
}
result.segmentIndex = i;
result.subKnotAIndex = j - 1;
result.subKnotBIndex = j;
result.lerpRatio = 1f - ((sk.distanceFromStart - distance) /
(sk.distanceFromStart - subNodes[j - 1].distanceFromStart));
break;
}
break;
}
return(true);
}
