public void CalculateSubsegments()
{
if (crs.points.Count >= 4)
{
subsegments = new List <Vector2>();
var position = CatmullRomSpline2D.CatmullRom(crs.points[0], crs.points[1], crs.points[2], crs.points[3], 0);
subsegments.Add(position);
for (int i = 0; i < crs.points.Count - 3; i++)
{
for (int segment = 1; segment <= crs.subsegmentSteps; segment++)
{
float s = segment / (float)crs.subsegmentSteps;
position = CatmullRomSpline2D.CatmullRom(crs.points[i + 0], crs.points[i + 1], crs.points[i + 2], crs.points[i + 3], s);
subsegments.Add(position);
}
}
}
}
private void OnGUI()
{
if (crs != lastCrs)
{
lastCrs = crs;
HandleSplineChanges();
}
bool repaint = false;
CatmullRomSpline2D before = crs;
crs = (CatmullRomSpline2D)EditorGUILayout.ObjectField("Spline:", crs, typeof(CatmullRomSpline2D), false);
if (before != crs)
{
repaint = true;
}
if (crs != null)
{
int subsegmentStepsBefore = crs.subsegmentSteps;
int subsegmentStepsAfter = EditorGUILayout.IntField("Subsegment Steps:", subsegmentStepsBefore);
if (subsegmentStepsBefore != subsegmentStepsAfter)
{
repaint = true;
}
if (crs.points.Count > 0)
{
int remove = -1;
for (int i = 0; i < crs.points.Count; i++)
{
EditorGUILayout.BeginHorizontal();
Vector2 positionBefore = crs.points[i];
Vector2 positionAfter = EditorGUILayout.Vector2Field("Point " + (i + 1), positionBefore);
if (positionBefore != positionAfter)
{
crs.points[i] = positionAfter;
repaint = true;
}
if (GUILayout.Button("Delete"))
{
remove = i;
}
EditorGUILayout.EndHorizontal();
}
if (remove != -1)
{
crs.points.RemoveAt(remove);
repaint = true;
}
}
else
{
GUILayout.Label("Shift-Click in the scene to add points");
}
}
if (repaint)
{
SceneView.RepaintAll();
HandleSplineChanges();
}
}
