public static BezierGroup Transformation(BezierGroup bzgroup, Vector3?startPoint = null, Vector3?startDirection = null,
Vector3?symmetryPoint = null, Vector3?symmetryAxis = null)
{
BezierGroup newGroup = new BezierGroup();
for (int i = 0; i < bzgroup.Count; i++)
{
Bezier bz = new Bezier(bzgroup[i].P0, bzgroup[i].P1, bzgroup[i].P2, bzgroup[i].P3);
// 如果 symmetryPoint 和 symmetryAxis 同时存在, 优先处理 symmetryPoint.
if (symmetryPoint.HasValue)
{
bz.SymmetryTranslateByPoint((Vector3)symmetryPoint);
}
if (symmetryAxis.HasValue)
{
bz.SymmetryTranslateByAxis((Vector3)symmetryAxis);
}
if (startPoint.HasValue || startDirection.HasValue)
{
if (i == 0)
{
bz.TranslateTo(startPoint, startDirection);
}
else
{
bz.TranslateTo(newGroup[-1].P3, newGroup[-1].P3 - newGroup[-1].P2);
}
}
newGroup.AddBizer(bz);
}
return(newGroup);
}
public static BezierGroup FromJsonData(JsonObject data)
{
BezierGroup bzg = new BezierGroup();
List <string> keys = new List <string>();
foreach (var k in data.Keys)
{
keys.Add((string)k);
}
keys.Sort();
List <Vector3> tempP = new List <Vector3>();
for (int i = 0; i < keys.Count; i++)
{
string k = keys[i];
List <object> xy = (List <object>)data[k];
Vector3 p = new Vector3((float)xy[0], (float)xy[1]);
tempP.Add(p);
if (tempP.Count == 4)
{
var bz = new Bezier(tempP[0], tempP[1], tempP[2], tempP[3]);
bzg.AddBizer(bz);
tempP.Clear();
tempP.Add(p);
}
}
return(bzg);
}
public static BezierGroup Reverse(BezierGroup bzgroup)
{
BezierGroup newGroup = new BezierGroup();
for (int i = bzgroup.Count - 1; i >= 0; i--)
{
Bezier bz = new Bezier(bzgroup[i].P3, bzgroup[i].P2, bzgroup[i].P1, bzgroup[i].P0);
newGroup.AddBizer(bz);
}
return(newGroup);
}
