private void HandleSelectedSegmentModifications()
{
if (selectedSegmentIndex < 0 || selectedSegmentIndex >= instance.Spline.Segments.Count)
{
return;
}
if (!instance.Spline.IsSegmentValid(selectedSegmentIndex))
{
return;
}
GSplineSegment segment = instance.Spline.Segments[selectedSegmentIndex];
GSplineAnchor startAnchor = instance.Spline.Anchors[segment.StartIndex];
GSplineAnchor endAnchor = instance.Spline.Anchors[segment.EndIndex];
Vector3 worldStartTangent = startAnchor.Position + segment.StartTangent;
Vector3 worldEndTangent = endAnchor.Position + segment.EndTangent;
Handles.zTest = UnityEngine.Rendering.CompareFunction.Always;
worldStartTangent = Handles.PositionHandle(worldStartTangent, Quaternion.identity);
worldEndTangent = Handles.PositionHandle(worldEndTangent, Quaternion.identity);
segment.StartTangent = worldStartTangent - startAnchor.Position;
segment.EndTangent = worldEndTangent - endAnchor.Position;
Handles.color = Color.white;
Handles.DrawLine(startAnchor.Position, worldStartTangent);
Handles.DrawLine(endAnchor.Position, worldEndTangent);
instance.transform.position = (startAnchor.Position + endAnchor.Position) * 0.5f;
}
private void HandleSelectedSegmentModifications()
{
if (selectedSegmentIndex < 0 || selectedSegmentIndex >= splineCreator.Spline.Segments.Count)
{
return;
}
if (!splineCreator.Spline.IsSegmentValid(selectedSegmentIndex))
{
return;
}
GSplineSegment segment = splineCreator.Spline.Segments[selectedSegmentIndex];
GSplineAnchor startAnchor = splineCreator.Spline.Anchors[segment.StartIndex];
GSplineAnchor endAnchor = splineCreator.Spline.Anchors[segment.EndIndex];
Vector3 worldStartPosition = splineCreator.transform.TransformPoint(startAnchor.Position);
Vector3 worldEndPosition = splineCreator.transform.TransformPoint(endAnchor.Position);
Vector3 worldStartTangent = splineCreator.transform.TransformPoint(segment.StartTangent);
Vector3 worldEndTangent = splineCreator.transform.TransformPoint(segment.EndTangent);
EditorGUI.BeginChangeCheck();
Handles.zTest = UnityEngine.Rendering.CompareFunction.Always;
worldStartTangent = Handles.PositionHandle(worldStartTangent, Quaternion.identity);
worldEndTangent = Handles.PositionHandle(worldEndTangent, Quaternion.identity);
segment.StartTangent = splineCreator.transform.InverseTransformPoint(worldStartTangent);
segment.EndTangent = splineCreator.transform.InverseTransformPoint(worldEndTangent);
if (EditorGUI.EndChangeCheck())
{
GUI.changed = true;
}
Handles.color = Color.white;
Handles.DrawLine(worldStartPosition, worldStartTangent);
Handles.DrawLine(worldEndPosition, worldEndTangent);
}
public Vector3 EvaluateScale(int segmentIndex, float t)
{
GSplineSegment s = Segments[segmentIndex];
GSplineAnchor startAnchor = Anchors[s.StartIndex];
GSplineAnchor endAnchor = Anchors[s.EndIndex];
return(Vector3.Lerp(startAnchor.Scale, endAnchor.Scale, t));
}
public Quaternion EvaluateRotation(int segmentIndex, float t)
{
GSplineSegment s = Segments[segmentIndex];
GSplineAnchor startAnchor = Anchors[s.StartIndex];
GSplineAnchor endAnchor = Anchors[s.EndIndex];
return(Quaternion.Lerp(startAnchor.Rotation, endAnchor.Rotation, t));
}
private void DrawSelectedSegmentGUI()
{
string label = "Selected Segment";
string id = "selectedsegment" + instance.GetInstanceID().ToString();
GEditorCommon.Foldout(label, true, id, () =>
{
if (selectedSegmentIndex >= 0 && selectedSegmentIndex < instance.Spline.Segments.Count)
{
GSplineSegment s = instance.Spline.Segments[selectedSegmentIndex];
GSplineSegmentInspectorDrawer.Create(s).DrawGUI();
}
else
{
EditorGUILayout.LabelField("No Segment selected!", GEditorCommon.ItalicLabel);
}
});
}
public bool IsSegmentValid(int segmentIndex)
{
GSplineSegment s = Segments[segmentIndex];
if (s == null)
{
return(false);
}
bool startIndexValid =
s.StartIndex >= 0 &&
s.StartIndex < Anchors.Count &&
Anchors[s.StartIndex] != null;
bool endIndexValid =
s.EndIndex >= 0 &&
s.EndIndex < Anchors.Count &&
Anchors[s.EndIndex] != null;
return(startIndexValid && endIndexValid);
}
private bool CheckHasBranch()
{
int[] count = new int[Anchors.Count];
for (int i = 0; i < Segments.Count; ++i)
{
if (!IsSegmentValid(i))
{
continue;
}
GSplineSegment s = Segments[i];
count[s.StartIndex] += 1;
count[s.EndIndex] += 1;
if (count[s.StartIndex] > 2 || count[s.EndIndex] > 2)
{
return(true);
}
}
return(false);
}
public Vector3 EvaluatePosition(int segmentIndex, float t)
{
GSplineSegment s = Segments[segmentIndex];
GSplineAnchor startAnchor = Anchors[s.StartIndex];
GSplineAnchor endAnchor = Anchors[s.EndIndex];
Vector3 p0 = startAnchor.Position;
Vector3 p1 = s.StartTangent;
Vector3 p2 = s.EndTangent;
Vector3 p3 = endAnchor.Position;
t = Mathf.Clamp01(t);
float oneMinusT = 1 - t;
Vector3 p =
oneMinusT * oneMinusT * oneMinusT * p0 +
3 * oneMinusT * oneMinusT * t * p1 +
3 * oneMinusT * t * t * p2 +
t * t * t * p3;
return(p);
}
private void DrawSelectedSegmentGUI()
{
string label = "Selected Segment";
string id = "selectedsegment" + instance.GetInstanceID().ToString();
GEditorCommon.Foldout(label, true, id, () =>
{
selectedSegmentIndex = splineEditingDrawer.selectedSegmentIndex;
if (selectedSegmentIndex >= 0 && selectedSegmentIndex < instance.Spline.Segments.Count)
{
GSplineSegment s = instance.Spline.Segments[selectedSegmentIndex];
GUI.enabled = !GEditorSettings.Instance.splineTools.autoTangent;
s.StartTangent = GEditorCommon.InlineVector3Field("Start Tangent", s.StartTangent);
s.EndTangent = GEditorCommon.InlineVector3Field("End Tangent", s.EndTangent);
GUI.enabled = true;
}
else
{
EditorGUILayout.LabelField("No Segment selected!", GEditorCommon.ItalicLabel);
}
});
}
public GSplineSegment AddSegment(int startIndex, int endIndex)
{
GSplineSegment s = Segments.Find(s0 =>
(s0.StartIndex == startIndex && s0.EndIndex == endIndex) ||
(s0.StartIndex == endIndex && s0.EndIndex == startIndex));
if (s != null)
{
return(s);
}
GSplineSegment newSegment = new GSplineSegment();
newSegment.StartIndex = startIndex;
newSegment.EndIndex = endIndex;
Segments.Add(newSegment);
GSplineAnchor startAnchor = Anchors[newSegment.StartIndex];
GSplineAnchor endAnchor = Anchors[newSegment.EndIndex];
newSegment.StartTangent = (endAnchor.Position - startAnchor.Position) / 3f;
newSegment.EndTangent = -newSegment.StartTangent;
return(newSegment);
}
public GSplineSegment AddSegment(int startIndex, int endIndex)
{
GSplineSegment s = Segments.Find(s0 =>
(s0.StartIndex == startIndex && s0.EndIndex == endIndex) ||
(s0.StartIndex == endIndex && s0.EndIndex == startIndex));
if (s != null)
{
return(s);
}
GSplineSegment newSegment = new GSplineSegment();
newSegment.StartIndex = startIndex;
newSegment.EndIndex = endIndex;
Segments.Add(newSegment);
GSplineAnchor startAnchor = Anchors[newSegment.StartIndex];
GSplineAnchor endAnchor = Anchors[newSegment.EndIndex];
Vector3 direction = (endAnchor.Position - startAnchor.Position).normalized;
float length = (endAnchor.Position - startAnchor.Position).magnitude / 3;
newSegment.StartTangent = startAnchor.Position + direction * length;
newSegment.EndTangent = endAnchor.Position - direction * length;
return(newSegment);
}
public int[] SmoothTangents(params int[] anchorIndices)
{
int[] anchorRanks = new int[Anchors.Count];
Vector3[] directions = new Vector3[Anchors.Count];
float[] segmentLengths = new float[Segments.Count];
for (int i = 0; i < Segments.Count; ++i)
{
GSplineSegment s = Segments[i];
anchorRanks[s.StartIndex] += 1;
anchorRanks[s.EndIndex] += 1;
GSplineAnchor aStart = Anchors[s.StartIndex];
GSplineAnchor aEnd = Anchors[s.EndIndex];
Vector3 startToEnd = aEnd.Position - aStart.Position;
Vector3 d = Vector3.Normalize(startToEnd);
directions[s.StartIndex] += d;
directions[s.EndIndex] += d;
segmentLengths[i] = startToEnd.magnitude;
}
for (int i = 0; i < directions.Length; ++i)
{
if (anchorRanks[i] == 0)
{
continue;
}
directions[i] = Vector3.Normalize(directions[i] / anchorRanks[i]);
}
if (anchorIndices == null || anchorIndices.Length == 0)
{
anchorIndices = GUtilities.GetIndicesArray(Anchors.Count);
}
for (int i = 0; i < anchorIndices.Length; ++i)
{
int index = anchorIndices[i];
if (anchorRanks[index] > 0)
{
Quaternion rot = Quaternion.LookRotation(directions[index], Vector3.up);
Anchors[index].Rotation = rot;
}
}
List <int> segmentIndices = new List <int>();
for (int i = 0; i < Segments.Count; ++i)
{
GSplineSegment s = Segments[i];
for (int j = 0; j < anchorIndices.Length; ++j)
{
int anchorIndex = anchorIndices[j];
if (s.StartIndex == anchorIndex || s.EndIndex == anchorIndex)
{
segmentIndices.Add(i);
}
}
}
for (int i = 0; i < segmentIndices.Count; ++i)
{
int index = segmentIndices[i];
GSplineSegment s = Segments[index];
GSplineAnchor aStart = Anchors[s.StartIndex];
GSplineAnchor aEnd = Anchors[s.EndIndex];
float sLength = segmentLengths[index];
float tangentLength = sLength * 0.33f;
Vector3 dirStart = directions[s.StartIndex];
Vector3 dirEnd = directions[s.EndIndex];
s.StartTangent = aStart.Position + dirStart * tangentLength;
s.EndTangent = aEnd.Position - dirEnd * tangentLength;
}
return(segmentIndices.ToArray());
}
public GSplineSegmentInspectorDrawer(GSplineSegment s)
{
instance = s;
}
public static GSplineSegmentInspectorDrawer Create(GSplineSegment s)
{
return(new GSplineSegmentInspectorDrawer(s));
}
public void AdjustTangent(int segmentIndex)
{
GSplineSegment s = Spline.Segments[segmentIndex];
int startCount = 0;
Vector3 startAvgTangent = Vector3.zero;
int endCount = 0;
Vector3 endAvgTangent = Vector3.zero;
for (int i = 0; i < Spline.Segments.Count; ++i)
{
GSplineSegment s0 = Spline.Segments[i];
if (s0 == s)
{
continue;
}
if (s0.StartIndex == s.StartIndex)
{
startAvgTangent += s0.StartTangent;
startCount += 1;
}
if (s0.EndIndex == s.StartIndex)
{
startAvgTangent += s0.EndTangent;
startCount += 1;
}
if (s0.StartIndex == s.EndIndex)
{
endAvgTangent += s0.StartTangent;
endCount += 1;
}
if (s0.EndIndex == s.EndIndex)
{
endAvgTangent += s0.EndTangent;
endCount += 1;
}
}
if (startAvgTangent == Vector3.zero)
{
startCount = 0;
}
if (endAvgTangent == Vector3.zero)
{
endCount = 0;
}
if (startCount == 0 && endCount == 0)
{
GSplineAnchor startAnchor = Spline.Anchors[s.StartIndex];
GSplineAnchor endAnchor = Spline.Anchors[s.EndIndex];
s.StartTangent = (endAnchor.Position - startAnchor.Position) / 3f;
s.EndTangent = -s.StartTangent;
}
else if (startCount == 0 && endCount > 0)
{
s.EndTangent = -endAvgTangent / endCount;
s.StartTangent = s.EndTangent;
}
else if (startCount > 0 && endCount == 0)
{
s.StartTangent = -startAvgTangent / startCount;
s.EndTangent = s.StartTangent;
}
else
{
s.StartTangent = -startAvgTangent / startCount;
s.EndTangent = -endAvgTangent / endCount;
}
}