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);
}
public void Initialize(BezierGroup curve, float velocity, Vector3?toward = null,
bool smoothStart = false, bool allowLoop = false)
{
this.curve = curve;
this.V = velocity;
if (toward.HasValue)
{
this.toward = (Vector3)toward;
}
this.smoothStart = smoothStart;
this.allowLoop = allowLoop;
}
private void CodeToBezierUiButtonOnClick(object sender, RoutedEventArgs e)
{
var txt = SourceCode1.Text;
SourceCode2.Text = SourceCode3.Text = SourceCode4.Text = "";
ReDrawCanvas();
IBezierGroup bg = _runners[0]?.BezierGroup;
if (bg == null || bg.FragmentsCount == 0)
{
txt = txt
.Replace(" ", "")
.Replace("\t", "")
.Replace("\n", "")
.Replace("\r", "")
.Replace("return", "")
.ToLowerInvariant();
if (txt.StartsWith("bezier("))
{
txt = RemoveBezierNonNumbers(txt);
var arr = ToNumbers(txt);
if (arr.Length == 4)
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(0, 0);
bgb.to(1, 1).curve(arr[0], arr[1], arr[2], arr[3]);
bg = (IBezierGroup)bgb;
}
else if (arr.Length == 8)
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(arr[0], arr[1]);
bgb.to(arr[6], arr[7]).curve(arr[2], arr[3], arr[4], arr[5]);
bg = (IBezierGroup)bgb;
}
}
else if (txt.StartsWith("bezier2parts"))
{
txt = RemoveBezierNonNumbers(txt);
var arr = ToNumbers(txt);
if (arr.Length == (8 * 2 - 2))
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(arr[0], arr[1]);
bgb.to(arr[6], arr[7]).curve(arr[2], arr[3], arr[4], arr[5]);
bgb.to(arr[12], arr[13]).curve(arr[8], arr[9], arr[10], arr[11]);
bg = (IBezierGroup)bgb;
}
}
else if (txt.StartsWith("bezier3parts"))
{
txt = RemoveBezierNonNumbers(txt);
var arr = ToNumbers(txt);
if (arr.Length == (8 * 3 - 2 * 2))
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(arr[0], arr[1]);
bgb.to(arr[6], arr[7]).curve(arr[2], arr[3], arr[4], arr[5]);
bgb.to(arr[12], arr[13]).curve(arr[8], arr[9], arr[10], arr[11]);
bgb.to(arr[18], arr[19]).curve(arr[14], arr[15], arr[16], arr[17]);
bg = (IBezierGroup)bgb;
}
}
else if (txt.StartsWith("bezier4parts"))
{
txt = RemoveBezierNonNumbers(txt);
var arr = ToNumbers(txt);
if (arr.Length == (8 * 4 - 3 * 2))
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(arr[0], arr[1]);
bgb.to(arr[6], arr[7]).curve(arr[2], arr[3], arr[4], arr[5]);
bgb.to(arr[12], arr[13]).curve(arr[8], arr[9], arr[10], arr[11]);
bgb.to(arr[18], arr[19]).curve(arr[14], arr[15], arr[16], arr[17]);
bgb.to(arr[24], arr[25]).curve(arr[20], arr[21], arr[22], arr[23]);
bg = (IBezierGroup)bgb;
}
}
if (bg == null)
{
IBezierGroupBuilder bgb = new BezierGroup();
bgb.from(0, 0);
bgb.to(1, 1).curve(0.17, 0.67, 0.8, 0.33);
bg = (IBezierGroup)bgb;
}
}
// ReSharper disable once PossibleNullReferenceException
GenerateBezierUi(bg, TheCanvas, this);
}
