public static void DrawCurveOrientations(IBezier3DSplineData splineData)
{
var sceneViewCameraPosition = SceneView.lastActiveSceneView.camera.transform.position;
var maxViewDistance = CurvePreferences.MaximumViewDistance;
for (var dist = 0f; dist < splineData.TotalLength; dist += 1)
{
var point = splineData.GetPosition(dist);
if (Vector3.Distance(sceneViewCameraPosition, point) > maxViewDistance)
{
continue;
}
// Draw Up Vector
var up = splineData.GetUp(dist);
Handles.color = Handles.yAxisColor;
Handles.DrawLine(point, point + up);
// Draw Forward Vector
var forward = splineData.GetForward(dist);
Handles.color = Handles.zAxisColor;
Handles.DrawLine(point, point + forward);
// Draw Right Vector
var right = splineData.GetRight(dist);
Handles.color = Handles.xAxisColor;
Handles.DrawLine(point, point + right);
}
}
public static void CheckGeneralHotkeys(
IBezier3DSplineData splineData,
Action <IReadOnly3DSplineData> onUpdateSpline)
{
var evt = Event.current;
switch (evt.type)
{
// Undo Last Command
case EventType.ValidateCommand:
if (evt.commandName == UNDO_REDO_PERFORMED)
{
onUpdateSpline?.Invoke(splineData);
}
break;
// Flip Spline
case EventType.KeyDown:
if (evt.keyCode == KeyCode.I)
{
if ((evt.modifiers & (EventModifiers.Control | EventModifiers.Command)) != 0)
{
splineData.Flip();
}
}
break;
}
}
public static void DrawCurveLinesGizmos(IBezier3DSplineData splineData, Transform transform = null)
{
Gizmos.color = Color.white;
//Loop through each curve in spline
var segments = splineData.InterpolationStepsPerCurve;
var spacing = 1f / segments;
for (var i = 0; i < splineData.CurveCount; i++)
{
var curve = splineData.GetCurve(i);
//Get curve in world space
Vector3 a, b, c, d;
if (transform != null)
{
a = transform.TransformPoint(curve.StartPoint);
b = transform.TransformPoint(curve.FirstHandle + curve.StartPoint);
c = transform.TransformPoint(curve.SecondHandle + curve.EndPoint);
d = transform.TransformPoint(curve.EndPoint);
}
else
{
a = curve.StartPoint;
b = curve.FirstHandle + curve.StartPoint;
c = curve.SecondHandle + curve.EndPoint;
d = curve.EndPoint;
}
var prev = Bezier3DCurve.GetPoint(
a,
b,
c,
d,
0f);
for (var k = 0; k <= segments; k++)
{
var cur = Bezier3DCurve.GetPoint(
a,
b,
c,
d,
k * spacing);
Gizmos.DrawLine(prev, cur);
prev = cur;
}
}
}
public static void CheckSelectedKnotHotkeys(
IBezier3DSplineData splineData,
Action <IReadOnly3DSplineData> onUpdateSpline)
{
var evt = Event.current;
switch (evt.type)
{
case EventType.KeyDown:
// Delete Selected Knot
if (evt.keyCode == KeyCode.Delete)
{
if (splineData.KnotCount > 2)
{
Undo.RecordObject((UnityEngine.Object)splineData, "Remove Bezier Point");
splineData.RemoveKnot(CurveEditorState.SelectedKnotIndex);
CurveEditorState.ClearKnotSelection();
onUpdateSpline?.Invoke(splineData);
}
evt.Use();
}
// Focus Selected Knot
if (evt.keyCode == KeyCode.F)
{
var dist = splineData.GetSplineDistanceForKnotIndex(CurveEditorState.SelectedKnotIndex);
var pos = splineData.GetPosition(dist);
SceneView.lastActiveSceneView.Frame(new Bounds(pos, Vector3.one * 5f), false);
evt.Use();
}
// Clear Knot Selection
if (evt.keyCode == KeyCode.Escape)
{
CurveEditorState.ClearKnotSelection();
evt.Use();
}
break;
}
}
public static void DrawMultiSelect(
IBezier3DSplineData splineData,
UnityEditor.Editor editorWindow,
Transform transform = null)
{
Handles.color = Color.blue;
for (var i = 0; i < CurveEditorState.SelectedKnots.Count; i++)
{
if (Handles.Button(
transform == null
? splineData.GetKnot(CurveEditorState.SelectedKnots[i]).position
: transform.TransformPoint(splineData.GetKnot(CurveEditorState.SelectedKnots[i]).position),
Camera.current.transform.rotation,
SceneGUIConstants.HandleSize,
SceneGUIConstants.HandleSize,
Handles.CircleHandleCap))
{
CurveEditorState.SelectKnot(CurveEditorState.SelectedKnots[i], true);
editorWindow.Repaint();
}
}
var handlePos = Vector3.zero;
if (Tools.pivotMode == PivotMode.Center)
{
for (var i = 0; i < CurveEditorState.SelectedKnots.Count; i++)
{
handlePos += splineData.GetKnot(CurveEditorState.SelectedKnots[i]).position;
}
handlePos /= CurveEditorState.SelectedKnots.Count;
}
else
{
handlePos = splineData.GetKnot(CurveEditorState.SelectedKnotIndex).position;
}
if (transform != null)
{
handlePos = transform.TransformPoint(handlePos);
}
Handles.PositionHandle(handlePos, Tools.handleRotation);
}
public static void DrawUnselectedKnots(
IBezier3DSplineData splineData,
UnityEditor.Editor editorWindow,
Transform transform = null)
{
for (var i = 0; i < splineData.KnotCount; i++)
{
if (CurveEditorState.SelectedKnots.Contains(i))
{
continue;
}
var knot = splineData.GetKnot(i);
var knotWorldPos = transform == null
? knot.position
: transform.TransformPoint(knot.position);
if (knot.rotation.HasValue)
{
Handles.color = Handles.yAxisColor;
var rot = knot.rotation.Value;
Handles.ArrowHandleCap(
0,
knotWorldPos,
rot * Quaternion.AngleAxis(90, Vector3.left),
0.15f,
EventType.Repaint);
}
Handles.color = Color.white;
if (Handles.Button(
knotWorldPos,
Camera.current.transform.rotation,
HandleUtility.GetHandleSize(knotWorldPos) * SceneGUIConstants.HandleSize,
HandleUtility.GetHandleSize(knotWorldPos) * SceneGUIConstants.HandleSize,
Handles.CircleHandleCap))
{
CurveEditorState.SelectKnot(i, Event.current.control);
editorWindow.Repaint();
}
}
}
public static void DrawCurveOrientations(IBezier3DSplineData splineData)
{
for (var dist = 0f; dist < splineData.TotalLength; dist += 1)
{
var point = splineData.GetPosition(dist);
// Draw Up Vector
var up = splineData.GetUp(dist);
Handles.color = Handles.yAxisColor;
Handles.DrawLine(point, point + up);
// Draw Forward Vector
var forward = splineData.GetForward(dist);
Handles.color = Handles.zAxisColor;
Handles.DrawLine(point, point + forward);
// Draw Right Vector
var right = splineData.GetRight(dist);
Handles.color = Handles.xAxisColor;
Handles.DrawLine(point, point + right);
}
}
