private void addCap(LineCap cap,
IList<ICoordinate> vertexList,
CapLocation capLocation,
double x1,
double y1,
double x2,
double y2)
{
double angle = getSegmentAngle(x1, y1, x2, y2);
ICoordinate startPoint = PlanimetryEnvironment.NewCoordinate(0, 0);
switch (capLocation)
{
case CapLocation.Start:
angle += Math.PI / 2;
startPoint.X = x1;
startPoint.Y = y1;
break;
case CapLocation.End:
angle -= Math.PI / 2;
startPoint.X = x2;
startPoint.Y = y2;
break;
}
switch (cap)
{
case LineCap.Flat:
ICoordinate[] points = getCirclePoints(startPoint, angle, angle + Math.PI, _width / 2, 2);
foreach (ICoordinate p in points)
vertexList.Add(p);
break;
case LineCap.Round:
int pointsPerCircle = (int)(Math.Round(Width * Math.PI) / 2);
points = getCirclePoints(startPoint, angle, angle + Math.PI, _width / 2, pointsPerCircle);
foreach (ICoordinate p in points)
vertexList.Add(p);
break;
case LineCap.Square:
double r = _width * _sqrt2 / 2;
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + r * Math.Cos(angle + _squareCapAngle),
startPoint.Y + r * Math.Sin(angle + _squareCapAngle)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + r * Math.Cos(angle - _squareCapAngle + Math.PI),
startPoint.Y + r * Math.Sin(angle - _squareCapAngle + Math.PI)));
break;
case LineCap.Triangle:
double halfWidth = _width / 2;
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle),
startPoint.Y + halfWidth * Math.Sin(angle)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle + _halfPI),
startPoint.Y + halfWidth * Math.Sin(angle + _halfPI)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle + Math.PI),
startPoint.Y + halfWidth * Math.Sin(angle + Math.PI)));
break;
}
}
private void addCap(LineCap cap,
IList <ICoordinate> vertexList,
CapLocation capLocation,
double x1,
double y1,
double x2,
double y2)
{
double angle = getSegmentAngle(x1, y1, x2, y2);
ICoordinate startPoint = PlanimetryEnvironment.NewCoordinate(0, 0);
switch (capLocation)
{
case CapLocation.Start:
angle += Math.PI / 2;
startPoint.X = x1;
startPoint.Y = y1;
break;
case CapLocation.End:
angle -= Math.PI / 2;
startPoint.X = x2;
startPoint.Y = y2;
break;
}
switch (cap)
{
case LineCap.Flat:
ICoordinate[] points = getCirclePoints(startPoint, angle, angle + Math.PI, _width / 2, 2);
foreach (ICoordinate p in points)
{
vertexList.Add(p);
}
break;
case LineCap.Round:
int pointsPerCircle = (int)(Math.Round(Width * Math.PI) / 2);
points = getCirclePoints(startPoint, angle, angle + Math.PI, _width / 2, pointsPerCircle);
foreach (ICoordinate p in points)
{
vertexList.Add(p);
}
break;
case LineCap.Square:
double r = _width * _sqrt2 / 2;
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + r * Math.Cos(angle + _squareCapAngle),
startPoint.Y + r * Math.Sin(angle + _squareCapAngle)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + r * Math.Cos(angle - _squareCapAngle + Math.PI),
startPoint.Y + r * Math.Sin(angle - _squareCapAngle + Math.PI)));
break;
case LineCap.Triangle:
double halfWidth = _width / 2;
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle),
startPoint.Y + halfWidth * Math.Sin(angle)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle + _halfPI),
startPoint.Y + halfWidth * Math.Sin(angle + _halfPI)));
vertexList.Add(PlanimetryEnvironment.NewCoordinate(startPoint.X + halfWidth * Math.Cos(angle + Math.PI),
startPoint.Y + halfWidth * Math.Sin(angle + Math.PI)));
break;
}
}
