internal void Build(Pinion pinion, SvgSvgElement root)
{
SvgGroupElement helperLinesGroup = new SvgGroupElement("HelperLines");
helperLinesGroup.Style = Styles.HelperLineStyle;
root.AddChild(helperLinesGroup);
// Wheel pitch circle
helperLinesGroup.AddChild(SvgHelper.CreateCircle(pinion.Center, pinion.PitchDiameter / 2.0));
// Wheel addendum circle
helperLinesGroup.AddChild(SvgHelper.CreateCircle(pinion.Center, pinion.PitchDiameter / 2.0 + pinion.Addendum));
// Wheel dedendum circle
helperLinesGroup.AddChild(SvgHelper.CreateCircle(pinion.Center, pinion.PitchDiameter / 2.0 - pinion.Dedendum));
// wheel center
double halfCrossLength = 10;
helperLinesGroup.AddChild(new SvgLineElement(pinion.Center.X - halfCrossLength, pinion.Center.Y, pinion.Center.X + halfCrossLength, pinion.Center.Y));
helperLinesGroup.AddChild(new SvgLineElement(pinion.Center.X, pinion.Center.Y - halfCrossLength, pinion.Center.X, pinion.Center.Y + halfCrossLength));
SvgGroupElement mainGroup = new SvgGroupElement("Main");
mainGroup.Style = Styles.MinorLineStyle;
root.AddChild(mainGroup);
PinionTooth[] teeth = pinion.GetTeeth(Math.PI / pinion.ToothCount);
StringBuilder pathBuilder = new StringBuilder();
pathBuilder.AppendFormat(CultureInfo.InvariantCulture, "M{0},{1}", (float)teeth[0].DedendumIntersectLeft.X, (float)teeth[0].DedendumIntersectLeft.Y);
for (int i = 0; i < teeth.Length; i++)
{
PinionTooth tooth = teeth[i];
PinionTooth nextTooth = teeth[(i + 1) % teeth.Length];
InsertToothPath(pinion, tooth, nextTooth, pathBuilder);
}
pathBuilder.Append(" z");
SvgPath svgPath = new SvgPath(pathBuilder.ToString());
SvgPathElement svgPathElement = new SvgPathElement();
svgPathElement.D = svgPath;
mainGroup.AddChild(svgPathElement);
if (pinion.CenterHoleDiameter > 0)
{
mainGroup.AddChild(SvgHelper.CreateCircle(pinion.Center, pinion.CenterHoleDiameter / 2.0));
}
}
private void AddSlice(SvgGroupElement group, double radius, double angle, double angularWidth)
{
PointF firstPointOnCircle = GetPointOnCircle(radius, angle - angularWidth / 2.0);
PointF secondPointOnCircle = GetPointOnCircle(radius, angle + angularWidth / 2.0);
// for an explanation of the arc syntax see: http://www.codestore.net/store.nsf/unid/EPSD-5DTT4L
string path = String.Format(
CultureInfo.InvariantCulture,
"M0,0 L{0},{1} A{2},{2} 0 0,1 {3},{4} z",
firstPointOnCircle.X, firstPointOnCircle.Y, (float)radius, secondPointOnCircle.X, secondPointOnCircle.Y);
SvgPath svgPath = new SvgPath(path);
SvgPathElement svgPathElement = new SvgPathElement();
svgPathElement.D = svgPath;
group.AddChild(svgPathElement);
}