public override void drawGeoChunk(Geo geo)
{
LineGeo lineGeo = (LineGeo)geo;
foreach (var vb in lineGeo.lineVb)
{
GraphicsDevice.SetVertexBuffer(vb);
GraphicsDevice.DrawPrimitives(PrimitiveType.TriangleStrip, 3, vb.VertexCount - 5);
}
foreach (var vb in lineGeo.hLineVb)
{
GraphicsDevice.SetVertexBuffer(vb);
GraphicsDevice.DrawPrimitives(PrimitiveType.LineList, 0, vb.VertexCount);
}
}
void createLineSegment(ref int numVerts, ref int numHLineVerts, LineGeo geo, float lineWidth)
{
//Console.WriteLine(numVerts);
if (lineWidth > 0)
{
if (numVerts > 5 || numHLineVerts > 1)
{
if (numHLineVerts > 1)
{
VertexBuffer vb = new VertexBuffer(GraphicsDevice, lineVertDecl, numHLineVerts, BufferUsage.WriteOnly);
vb.SetData(hLineVerts, 0, numHLineVerts);
geo.hLineVb.Add(vb);
numHLineVerts = 0;
}
if (numVerts > 5)
{
VertexBuffer vb = new VertexBuffer(GraphicsDevice, lineVertDecl, numVerts, BufferUsage.WriteOnly);
vb.SetData(lineVerts, 0, numVerts);
geo.lineVb.Add(vb);
numVerts = 3;
}
}
}
}
//static string GetName<T>(T item) where T : class
//{
// return typeof(T).GetProperties()[0].Name;
//}
public override void createGeoChunk(out Geo geo, BoundingBox bbox, Midi.Track midiTrack, TrackProps trackProps, MaterialProps texMaterial)
{
LineGeo lineGeo = new LineGeo();
geo = lineGeo;
if (LineWidth == 0)
{
return;
}
List <Midi.Note> noteList = midiTrack.Notes;
//List<Midi.Note> noteList = getNotes(0, midiTrack, songDrawProps);
if (noteList.Count == 0)
{
return;
}
int vertIndex = 3;
int hLineVertIndex = 0;
int completeNoteListIndex = midiTrack.Notes.IndexOf(noteList[0]);
float vpLineWidth = VpLineWidth;
float maxNumBboxesPerScreenWidth = 1000;
float bboxMinSqLength = (float)Math.Pow(Project.Props.Camera.ViewportSize.X / maxNumBboxesPerScreenWidth, 2);
//for (int i = 0; i < 100; i++)
//{
// vertIndex = 30000;
// createLineSegment(ref vertIndex, ref hLineVertIndex, lineGeo, vpLineWidth);
//}
//return;
for (int n = 0; n < noteList.Count; n++)
{
//Get current note
Midi.Note note = noteList[n], nextNote;
if (note.start > Project.Notes.SongLengthT) //only if audio ends before the notes end
{
continue;
}
if (n < noteList.Count - 1)
{
nextNote = noteList[n + 1];
}
else if (completeNoteListIndex < midiTrack.Notes.Count - 1)
{
nextNote = midiTrack.Notes[completeNoteListIndex + 1];
}
else
{
nextNote = note;
}
Vector2 noteStart = Project.getScreenPos(note.start, note.pitch);
float noteEnd = Project.getScreenPos(note.stop, note.pitch).X;
Vector2 nextNoteStart = Project.getScreenPos(nextNote.start, nextNote.pitch);
if (noteEnd > nextNoteStart.X && completeNoteListIndex < midiTrack.Notes.Count - 1)
{
noteEnd = nextNoteStart.X;
}
bool endOfSegment = false;
if ((float)(nextNote.start - note.stop) > Qn_gapThreshold * Project.Notes.TicksPerBeat || note == nextNote)
{
if (nextNoteStart.X != noteStart.X)
{
nextNoteStart.Y = (int)MathHelper.Lerp(noteStart.Y, nextNoteStart.Y, (float)(noteEnd - noteStart.X) / (nextNoteStart.X - noteStart.X));
}
nextNoteStart.X = noteEnd;
endOfSegment = true;
}
float startDraw = noteStart.X;
float endDraw = nextNoteStart.X;
//Don't draw if length is 0
if (startDraw == endDraw)
{
continue;
}
float curvature = calcLinearLineAngle(n, trackProps.TrackView.Curve);
//if (n > 0)
//{
// float prevCurvature = calcLinearLineAngle(n - 1, trackProps.TrackView.Curve);
// if (prevCurvature > curvature)
// curvature = (prevCurvature + curvature) / 2; //Prevent too big jumps between levels of tesselation which will cause sharp bends
//}
if (n < noteList.Count - 1)
{
curvature = Math.Max(curvature, calcLinearLineAngle(n + 1, trackProps.TrackView.Curve));
}
//curvature /= (float)Math.PI; //Map to [0,1]
curvature = Math.Min(curvature, 0.97f * (float)Math.PI); //Clip below 180 degrees to avoid extreme tesselation
curvature = (float)Math.Pow(curvature, 2.25) * 1000;
float step;
if (curvature == 0)
{
step = (endDraw - startDraw) * 0.999f; //Only one point for the note
}
else
{
step = 1 / curvature;
}
if (step >= endDraw - startDraw)
{
step = (endDraw - startDraw);// * 0.999f;
}
int iterations = (int)((endDraw - startDraw) / step);
if (iterations < 0)
{
throw new OverflowException($"Too many vertices for note {n}, track {trackProps.TrackView.TrackNumber}.");
}
step = (endDraw - startDraw) / (iterations + 1);
Vector3 bboxStart = Vector3.Zero;
for (float x = startDraw; x <= endDraw + 0.00001f; x += step)
{
Vector3 center, normal, vertexOffset;
getCurvePoint(out center, out normal, out vertexOffset, step, x, trackProps, vpLineWidth);
//normal.X = curvature/10f;
lineVerts[vertIndex].normal = lineVerts[vertIndex + 1].normal = normal;
//Create vertices
//adjustCurvePoint(center, vertexOffset, -1, trackProps, lineVerts, vertIndex, step, vpLineWidth);
//adjustCurvePoint(center, vertexOffset, 1, trackProps, lineVerts, vertIndex + 1, step, vpLineWidth);
//curvature = trackProps.TrackView.Curve.EvaluateCurvature(Project.getTimeT(x));
//center.Y = curvature / 10;
lineVerts[vertIndex].pos = center - vertexOffset;
lineVerts[vertIndex + 1].pos = center + vertexOffset;
lineVerts[vertIndex].center = lineVerts[vertIndex + 1].center = center;
float normStepFromNoteStart = (x - startDraw) / (nextNoteStart.X - noteStart.X);
//lineVerts[vertIndex].normStepFromNoteStart = lineVerts[vertIndex + 1].normStepFromNoteStart = normStepFromNoteStart;
lineVerts[vertIndex].normPos = new Vector2(normStepFromNoteStart, 0);
lineVerts[vertIndex + 1].normPos = new Vector2(normStepFromNoteStart, 1);
if (texMaterial.TexProps.Texture != null)
{
calcTexCoords(out lineVerts[vertIndex].texCoords, out lineVerts[vertIndex + 1].texCoords, texMaterial.TexProps, x - startDraw, normStepFromNoteStart, vpLineWidth, lineVerts[vertIndex].pos, lineVerts[vertIndex + 1].pos);
}
if (LineType == VisualMusic.LineType.Ribbon)
{
float hLineStart = center.X;
float hLineEnd = hLineStart;
do
{
hLineEnd += step;
} while ((int)center.Y == (int)Project.getCurveScreenY((float)hLineEnd + step, trackProps.TrackView.Curve) && hLineEnd < endDraw);
if (hLineEnd > hLineStart + vpLineWidth / 2)
{
hLineVerts[hLineVertIndex++] = lineVerts[vertIndex];
hLineVerts[hLineVertIndex++] = lineVerts[vertIndex + 1];
}
//float horizontalFactor = Math.Abs(normal.Y);
//float horizontalLimit = 0.98f;
//float minThickness = 0.001f;
//if (horizontalFactor > horizontalLimit)
//{ //todo use vertexoffset for non-ribbon instead of normal
// horizontalFactor = (horizontalFactor - horizontalLimit) / (1 - horizontalLimit); //[horizontalFactor, 1] -> [0, 1]
// lineVerts[vertIndex].pos.Y -= minThickness * horizontalFactor * Math.Sign(normal.X);
//}
}
if (x == startDraw && vertIndex > 3)
{
lineVerts[vertIndex].pos = lineVerts[vertIndex - 2].pos;
lineVerts[vertIndex + 1].pos = lineVerts[vertIndex - 1].pos;
}
//Create bounding box
if (bboxStart == Vector3.Zero)
{
bboxStart = lineVerts[vertIndex].center;
}
Vector3 bboxEnd = lineVerts[vertIndex].center;
if (Vector3.DistanceSquared(bboxStart, bboxEnd) > bboxMinSqLength)
{
Vector3 bboxCenter = (bboxStart + bboxEnd) / 2;
geo.bboxes.Add(new BoundingBoxEx(bboxCenter, bboxEnd - bboxCenter, bboxEnd - lineVerts[vertIndex].pos, new Vector3(0, 0, 0)));
bboxStart = bboxEnd;
}
vertIndex += 2;
if (vertIndex >= MaxLineVerts - 2 || hLineVertIndex >= MaxHLineVerts - 2)
{
createLineSegment(ref vertIndex, ref hLineVertIndex, lineGeo, vpLineWidth);
x -= step;
}
//break;
}
if (!(bool)Continuous)
{
endOfSegment = true; //One draw call per note. Can be used to avoid glitches between notes because of instant IN.normStepFromNoteStart interpolation from 1 to 0.
}
if (endOfSegment)
{
createLineSegment(ref vertIndex, ref hLineVertIndex, lineGeo, vpLineWidth);
}
completeNoteListIndex++;
}
createLineSegment(ref vertIndex, ref hLineVertIndex, lineGeo, vpLineWidth);
}
