public static string DoTransform(List<TimeSpan> TransformTimes, MTVars Vars, string Code, double FrameRate)
{
double fp = 1.0/FrameRate;
double ratio;
TimeSpan frame = TimeSpan.FromSeconds(fp);
TimeSpan curtime;
StringBuilder sb = new StringBuilder(6144);
MTVars.MTVariable mtv;
string rep, repwith, output;
int index, windex, comp;
/* The times are already sorted because the listbox is sorted.
* We'll loop from the first time to the last time
* and figure out which section we're in then.
* I'm doing this because rounding problems could otherwise
* cause us to miss a frame between sections or give us an
* invalid offset (for example, each frame was .02 seconds off in time)
*/
index = windex = 0;
curtime = TransformTimes[0];
TransformTimes[TransformTimes.Count-1].Add(frame);
while(curtime.CompareTo(TransformTimes[TransformTimes.Count-1]) == -1) {
// Find out what zone we're in (0-based)
while((comp = curtime.CompareTo(TransformTimes[windex])) == -1)
windex+=1;
sb.Append(
Code.Replace("%starttime%",
Util.TimeSpanSSA(
(index==0&&curtime.CompareTo(TimeSpan.Zero)==-1)?TimeSpan.Zero:curtime,false,1))
.Replace("%endtime%",Util.TimeSpanSSA(curtime=curtime.Add(frame),false,1))
); // curtime is incremented in the line above this, notice the single equals
for(int mtindex=0;mtindex!=Vars.Count;mtindex+=1){
mtv = Vars.GetVariable(mtindex);
ratio = Convert.ToDouble(curtime.Subtract(TransformTimes[0]).Ticks,Util.nfi)
/ Convert.ToDouble(((TransformTimes[windex+1]).Subtract(frame.Add(TransformTimes[windex]))).Ticks,Util.nfi);
rep = "%" + mtv.Name + "%";
repwith = mtv.Value(windex,ratio).ToString();
sb.Replace(rep,repwith);
}
sb.AppendLine();
index+=1;
}
output = sb.ToString().TrimEnd();
if (Code.Contains("$")) return Evaluate.ScriptParse(output);
return output;
}
