inserir dois pontos.cs

// versao 3.0

using System.Collections.Generic;
using Sony.Vegas;

using System;
using System.Windows.Forms;

public class EntryPoint
{
    CurveType MainCurveType = CurveType.Smooth;
    EnvelopeType envType = EnvelopeType.Volume;
    Timecode prePoint = Timecode.FromMilliseconds(-120);

    public void FromVegas(Vegas vegas)
    {
        TransportControl transport = vegas.Transport;
        Timecode selectionStart = transport.SelectionStart;
        Timecode selectionLength = transport.SelectionLength;
        if (selectionLength != Timecode.FromSeconds(0)) {
            prePoint = selectionLength;
        }
        Tracks allTracks = vegas.Project.Tracks;
        List<int> selectedTracks = new List<int>();
        foreach (Track track in allTracks) {
            if (track.Selected) selectedTracks.Add(track.Index);
        }
        if (selectedTracks.Count >= 2) {
            foreach (int trackIdx in selectedTracks) {
                Track track = allTracks[trackIdx];
                AddPoint(selectionStart+prePoint, selectionStart, track);
            }
        } else {
            foreach (Track track in allTracks) { 
                AddPoint(selectionStart+prePoint, selectionStart, track);
            }
        }
    }
    void AddPoint(Timecode selStart, Timecode selEnd, Track track) {
        Envelope env = track.Envelopes.FindByType(envType);
        if (env != null) {
            double valueIn = env.ValueAt(selStart);
            List<EnvelopePoint> points = GetPoints(selStart, selEnd, env);
            if (points.Count != 0) {
                RemovePoints(points, env);
                // ZeroPoints(points);
            } else {
                env.Points.Add(new EnvelopePoint(selStart, valueIn, MainCurveType));
                env.Points.Add(new EnvelopePoint(selEnd, valueIn, MainCurveType));
            }
        }
    }
    void RemovePoints (List<EnvelopePoint> points, Envelope env) {
        foreach (EnvelopePoint point in points) {
            env.Points.Remove(point);
        }
    }
    void ZeroPoints(List<EnvelopePoint> points) {
        foreach (EnvelopePoint point in points.GetRange(1,points.Count-2)) {
            point.Y = 0;
        }
    }
    List<EnvelopePoint> GetPoints(Timecode selStart, Timecode selEnd, Envelope env) {
        Timecode currentTime = Timecode.FromSeconds(0);
        List<EnvelopePoint> points = new List<EnvelopePoint>();
        Timecode start;
        Timecode end;
        if (selStart > selEnd) {
            start = selEnd;
            end = selStart;
        } else {
            start = selStart;
            end = selEnd;
        }
        for (int counter = env.Points.Count-1; counter >= 0; counter--) {
            currentTime = env.Points[counter].X;
            if (currentTime >= start && currentTime <= end) {
                if (currentTime.ToMilliseconds() != 0) points.Add(env.Points[counter]);
            }
            if (currentTime < start) break;
        }
        return points;
    }
}