private string svgify(SVGelement element)
{
string returnText = "";
if (element is SVGcurve)
{
SVGcurve curve = (SVGcurve)element;
returnText = makeSVGpath(
"M " + curve.point1.x.ToString() + " "
+ curve.point1.y.ToString() + " "
+ "C " + curve.handle1.x.ToString() + " "
+ curve.handle1.y.ToString() + " "
+ curve.handle2.x.ToString() + " "
+ curve.handle2.y.ToString() + " "
+ curve.point2.x.ToString() + " "
+ curve.point2.y.ToString() + " ");
}
else if (element is SVGline)
{
SVGline line = (SVGline)element;
returnText = makeSVGpath(
"M" + line.start.x.ToString() + " "
+ line.start.y.ToString() + " "
+ "L" + line.end.x.ToString() + " "
+ line.end.y.ToString() + " ");
}
else if (element is SVGellipse)
{
SVGellipse ellipse = (SVGellipse)element;
returnText = "<ellipse rx=\"" + ellipse.radius.x.ToString() +
"\" ry=\"" + ellipse.radius.y.ToString() +
"\" cx=\"" + ellipse.center.x.ToString() +
"\" cy=\"" + ellipse.center.y.ToString() +
"\" fill=\"none\" stroke=\"black\" stroke-width=\"1\" />";
}
return(returnText);
}
public static SVGElementArray shortPath(SVGElementArray allElements)
{
//variables
double distance = 0;
double previousDistance = 0;
point currentPoint = new point();
point previousLocation = new point();
SVGElementArray reOrdered = new SVGElementArray();
bool[] done = new bool[allElements.SVGelement.Count];
List <processorPoint> points = new List <processorPoint>();
//convert to points
for (int elementNum = 0; elementNum < allElements.SVGelement.Count; elementNum++)
{
SVGelement element = allElements.SVGelement[elementNum];
if (element is SVGellipse)
{
SVGellipse ellipse = (SVGellipse)allElements.SVGelement[elementNum];
for (double angle = 0; angle <= 6.3; angle += 0.1)
{
point locAtAngle = new point();
locAtAngle.x = Math.Cos(angle) * ellipse.radius.x + ellipse.center.x;
locAtAngle.y = Math.Sin(angle) * ellipse.radius.y + ellipse.center.y;
points.Add(new processorPoint(locAtAngle, elementNum));
}
Array.Resize(ref done, done.Length + 63);
}
else if (element is SVGline)
{
SVGline line = (SVGline)allElements.SVGelement[elementNum];
points.Add(new processorPoint(line.start, elementNum));
points.Add(new processorPoint(line.end, elementNum));
Array.Resize(ref done, done.Length + 2);
}
else if (element is SVGcurve)
{
SVGcurve curve = (SVGcurve)allElements.SVGelement[elementNum];
points.Add(new processorPoint(curve.point1, elementNum));
points.Add(new processorPoint(curve.point2, elementNum));
Array.Resize(ref done, done.Length + 2);
}
}
previousLocation.x = 0;
previousLocation.y = 0;
//find shortest distance
for (int elementNum = 0; elementNum < allElements.SVGelement.Count; elementNum++)
{
int index = 0;
previousDistance = double.MaxValue;
for (int comparerIndex = 0; comparerIndex < points.Count; comparerIndex++)
{
currentPoint.x = points[comparerIndex].loc.x;
currentPoint.y = points[comparerIndex].loc.y;
distance = Math.Sqrt(Math.Pow((previousLocation.x - currentPoint.x), 2)
+ Math.Pow((previousLocation.y - currentPoint.y), 2));
if (distance < previousDistance & done[points[comparerIndex].index] == false)
{
previousDistance = distance;
index = points[comparerIndex].index;
}
}
//after cycling through all points, assign the goal to have been done
done[index] = true;
/* check which of the two points are closer
* pass out which point in particular was chosen
* then reorder with the closest point first */
reOrdered.SVGelement.Add(allElements.SVGelement[index]);
if (reOrdered.SVGelement[reOrdered.SVGelement.Count - 1] is SVGline)
{
SVGline line = (SVGline)reOrdered.SVGelement[reOrdered.SVGelement.Count - 1];
double dToStart = Math.Sqrt(Math.Pow(previousLocation.x - line.start.x, 2) + Math.Pow(previousLocation.y - line.start.y, 2));
double dToEnd = Math.Sqrt(Math.Pow(previousLocation.x - line.end.x, 2) + Math.Pow(previousLocation.y - line.end.y, 2));
if (dToEnd < dToStart)
{
SVGline newLine = new SVGline(line.end, line.start);
reOrdered.SVGelement.RemoveAt(reOrdered.SVGelement.Count - 1);
reOrdered.SVGelement.Add(newLine);
}
}
if (reOrdered.SVGelement[reOrdered.SVGelement.Count - 1] is SVGcurve)
{
SVGcurve curve = (SVGcurve)reOrdered.SVGelement[reOrdered.SVGelement.Count - 1];
double dToStart = Math.Sqrt(Math.Pow(previousLocation.x - curve.point1.x, 2) + Math.Pow(previousLocation.y - curve.point1.y, 2));
double dToEnd = Math.Sqrt(Math.Pow(previousLocation.x - curve.point2.x, 2) + Math.Pow(previousLocation.y - curve.point2.y, 2));
if (dToEnd < dToStart)
{
SVGcurve newCurve = new SVGcurve(curve.point2, curve.handle2, curve.handle1, curve.point1, curve.transform);
reOrdered.SVGelement.RemoveAt(reOrdered.SVGelement.Count - 1);
reOrdered.SVGelement.Add(newCurve);
}
}
if (reOrdered.SVGelement[reOrdered.SVGelement.Count - 1] is SVGellipse)
{
SVGellipse ellipse = (SVGellipse)allElements.SVGelement[index];
reOrdered.SVGelement.RemoveAt(reOrdered.SVGelement.Count - 1);
reOrdered.SVGelement.Add(ellipse);
}
previousLocation = currentPoint;
}
return(reOrdered);
}