List <ICustomPoint> SplitSegment(ISegment segment, double accuracy, double step, int segmentNum)
{
Point startPoint = segment.GetCurvePoint(0);
Point lastPoint = segment.GetCurvePoint(1);
List <ICustomPoint> result = new List <ICustomPoint>()
{
new CustomPoint(segmentNum, 0, startPoint)
};
double t = 0;
double startT = t;
while (t < 1)
{
double nextT = t + step;
if (nextT > 1)
{
nextT = 1;
}
Point currentPoint = segment.GetCurvePoint(t);
Point nextPoint = segment.GetCurvePoint(nextT);
double length = (currentPoint - startPoint).Length;
double nextLength = (nextPoint - startPoint).Length;
if ((length < accuracy && nextLength > accuracy) || nextLength < length)
{
result.Add(new CustomPoint(segmentNum, nextT, nextPoint));
startPoint = nextPoint;
startT = nextT;
}
t = nextT;
}
if (result.Count > 1 && (lastPoint - result.Last().GetPoint()).Length < lastPartAccuracy * accuracy)
{
result.RemoveAt(result.Count - 1);
double middleT = (1 + result.Last().GetT()) / 2;
result.Add(new CustomPoint(segmentNum, middleT, segment.GetCurvePoint(middleT)));
}
result.Add(new CustomPoint(segmentNum, 1, lastPoint));
return(result);
}
private void ShowNormal_Click(object sender, RoutedEventArgs e)
{
if (model == null)
{
MessageBox.Show("No model is imported");
return;
}
string[] debugParams = textBox_Debug.Text.Split(';');
int segmentNum = 0;
double t = 0;
double multiplier = 0;
try
{
segmentNum = int.Parse(debugParams[0]);
t = double.Parse(debugParams[1], CultureInfo.InvariantCulture);
multiplier = double.Parse(debugParams[2], CultureInfo.InvariantCulture);
}
catch
{
MessageBox.Show("Wrong format in debug parameters.\nFormat is:\n <segment number>;<t value>;<multiplier value>");
return;
}
ISegment chosenSegment = model.GetCanvasData().ElementAt(segmentNum);
Point pointOnSegment = chosenSegment.GetCurvePoint(t);
Normal normalForSegment = chosenSegment.GetNormal(t);
if (t == 0)
{
int prevSegmentNum = segmentNum == 0 ? model.GetCanvasData().Count() - 1 : segmentNum - 1;
normalForSegment = normalForSegment.Combine(model.GetCanvasData().ElementAt(prevSegmentNum).GetNormal(1));
}
else if (t == 1)
{
int nextSegmentNum = segmentNum == model.GetCanvasData().Count() - 1 ? 0 : segmentNum + 1;
normalForSegment = model.GetCanvasData().ElementAt(nextSegmentNum).GetNormal(0).Combine(normalForSegment);
}
ISegment normalSegment = new Segment(new BezierCurve(), new List <Point>()
{
pointOnSegment,
new Point(pointOnSegment.X + multiplier * normalForSegment.Dx(), pointOnSegment.Y + multiplier * normalForSegment.Dy())
});
View.VisibleDataSettings settings = new View.VisibleDataSettings();
settings.Brush = Brushes.Blue;
settings.Thikness = 1;
IMidSurface debugSurface = new MidSurface();
debugSurface.Add(normalSegment);
View.VisibleData visible_data = new View.VisibleData(debugSurface, settings);
view.Paint(visible_data);
}
public Point GetCurvePoint(double t)
{
return(segment.GetCurvePoint(t));
}