private void OnSceneGUI()
{
BezierCurve curve = (BezierCurve)target;
Transform t = curve.transform;
Quaternion handleRot = Tools.pivotRotation == PivotRotation.Local ? t.rotation : Quaternion.identity;
/* Transform curve points into world space */
Vector3[] worldPoints = new Vector3[curve.points.Length];
for (int i = 0; i < worldPoints.Length; i++)
{
worldPoints[i] = t.TransformPoint(curve.points[i]);
}
/* Draw handle line */
Handles.color = SplineUIParams.handleLineColour;
for (int i = 1; i < worldPoints.Length; i++)
{
Handles.DrawLine(worldPoints[i - 1], worldPoints[i]);
}
/* show handle for and update each point on curve */
for (int i = 0; i < worldPoints.Length; i++)
{
Vector3 p = worldPoints[i];
//display dot button for each curve point; only display handle of selected point
//selectedIndex must persist between OnSceneGUI() calls or the handle will only appear for one call
float size = HandleUtility.GetHandleSize(p);
Handles.color = SplineUIParams.handleColour;
if (Handles.Button(p, handleRot, size * SplineUIParams.handleSize,
size * SplineUIParams.handlePickSize, Handles.DotHandleCap))
{
selectedIndex = i;
}
if (i == selectedIndex)
{
EditorGUI.BeginChangeCheck();
p = Handles.DoPositionHandle(p, handleRot); //DoPositionHandle creates an editor Handle at position and rotation
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(curve, "Move Bezier Curve Point"); //allow handle move to be undone with Undo
EditorUtility.SetDirty(curve); //set line to dirty so Unity knows a change was made and asks to save before closing etc.
curve.points[i] = t.InverseTransformPoint(p); //transform moved world point back to local position and update line point with it
}
}
}
/* draw curve as line segments */
float segmentLength = SplineUIParams.GetCurveSegmentLength(worldPoints);
Handles.color = SplineUIParams.curveColour;
for (float i = segmentLength; i <= 1; i += segmentLength)
{
Handles.DrawLine(curve.GetWorldPoint(i - segmentLength), curve.GetWorldPoint(i));
}
}
private void OnSceneGUI()
{
BezierCurve curve = (BezierCurve)target;
float segmentLength = SplineUIParams.GetCurveSegmentLength(curve.points);
for (float t = segmentLength; t <= 1; t += segmentLength)
{
Instantiate(windArrow, curve.GetWorldPoint(t), Quaternion.LookRotation(curve.GetWorldDir(t), Vector3.up));
}
}
private void OnSceneGUI()
{
BezierSpline spline = (BezierSpline)target;
Transform transform = spline.transform;
Quaternion handleRot = Tools.pivotRotation == PivotRotation.Local ? transform.rotation : Quaternion.identity;
/* Transform points of each curve into world space */
List <Vector3[]> worldCurves = new List <Vector3[]>();
//foreach(Vector3[] curve in spline.curves)
foreach (Points curve in spline.curves)
{
Vector3[] worldCurve = new Vector3[curve.points.Length];
for (int i = 0; i < curve.points.Length; i++)
{
worldCurve[i] = transform.TransformPoint(curve.points[i]);
}
worldCurves.Add(worldCurve);
}
/* Loop through each world space curve in the spline and update handles/lines/curves for it */
for (int i = 0; i < worldCurves.Count; i++)
{
Vector3[] curve = worldCurves[i];
/* Draw handle line */
Handles.color = i == selectedCurveIndex ? SplineUIParams.selectedHandleLineColour : SplineUIParams.handleLineColour;
for (int j = 1; j < curve.Length; j++)
{
Handles.DrawLine(curve[j - 1], curve[j]);
}
/* show handle for and update each point on curve */
for (int j = 0; j < curve.Length; j++)
{
Vector3 p = curve[j];
//display dot button for each curve point; only display handle of selected point
//selectedIndex must persist between OnSceneGUI() calls or the handle will only appear for one call
float size = HandleUtility.GetHandleSize(p);
Handles.color = SplineUIParams.handleColour;
if (Handles.Button(p, handleRot, size * SplineUIParams.handleSize,
size * SplineUIParams.handlePickSize, Handles.DotHandleCap))
{
selectedCurveIndex = i;
selectedPointIndex = j;
}
//display move handle for selected point
if (i == selectedCurveIndex && j == selectedPointIndex)
{
EditorGUI.BeginChangeCheck();
p = Handles.DoPositionHandle(p, handleRot); //DoPositionHandle creates an editor Handle at position and rotation
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(spline, "Move Bezier Curve Point"); //allow handle move to be undone with Undo
EditorUtility.SetDirty(spline); //set line to dirty so Unity knows a change was made and asks to save before closing etc.
//Transform moved world point back to local position and update selected point with it
Vector3 localPoint = transform.InverseTransformPoint(p);
spline.curves[i].points[j] = localPoint;
//If selected point is the last point of non-last curve in the spline, move first point of next curve to match;
//if selected point is the first point of non-first curve in the spline, move last point of previous curve to match
if (j == spline.curves[i].points.Length - 1 && i < spline.curves.Count - 1)
{
spline.curves[i + 1].points[0] = localPoint;
}
else if (j == 0 && i > 0)
{
spline.curves[i - 1].points[spline.curves[i - 1].points.Length - 1] = localPoint;
}
}
}
}
/* draw curve as line segments */
float segmentLength = SplineUIParams.GetCurveSegmentLength(curve);
Color curveCol = i == selectedCurveIndex ? SplineUIParams.selectedCurveColour : SplineUIParams.curveColour;
for (float t = segmentLength; t <= 1; t += segmentLength)
{
Handles.color = curveCol;
Handles.DrawLine(spline.GetWorldPoint(i, t - segmentLength), spline.GetWorldPoint(i, t));
if (showTangents)
{
Handles.color = SplineUIParams.tanColour;
//Handles.DrawLine(spline.)
}
if (showNormals)
{
Handles.color = SplineUIParams.normalColour;
//show normals
}
}
}
}