public void UpdateRenderer(List <StrokePoint> stroke, int maxChangedFromEnd)
{
int startIdx = Mathf.Max(0, stroke.Count - 1 - maxChangedFromEnd);
int endIdx = stroke.Count - 1;
for (int i = startIdx; i <= endIdx; i++)
{
StrokePoint strokePoint = stroke[i];
MeshPoint point = new MeshPoint(strokePoint.position);
point.Normal = strokePoint.normal;
point.Color = strokePoint.color;
if (i > _ribbon.Points.Count - 1)
{
_ribbon.Add(point, strokePoint.thickness);
}
else
{
_ribbon.Points[i] = point;
_ribbon.Radii[i] = strokePoint.thickness;
}
}
_stroke = stroke;
SetMeshDataFromRibbon(_mesh, _ribbon);
}
private void RefreshRenderTrail()
{
Vector3 endPosition = _lastStrokeBuffer.GetLatest().position;
for (int i = 0; i < _lastStrokeBuffer.Count; i++)
{
StrokePoint strokePoint = _lastStrokeBuffer.Get(i);
MeshPoint point = new MeshPoint(strokePoint.position);
point.Normal = strokePoint.normal;
point.Color = strokePoint.color;
if (i > _ribbon.Points.Count - 1)
{
_ribbon.Add(point, strokePoint.thickness);
}
else
{
// Offset from most recent + decay
Vector3 offsetFromEndPosition = endPosition - point.Position;
Vector3 targetOffset = (offsetFromEndPosition * (1 - _thicknessDecayMultiplier));
if (i > _prevDrawOffsets.Count - 1)
{
_prevDrawOffsets.Add(targetOffset);
}
point.Position = point.Position + Vector3.Slerp(_prevDrawOffsets[i], targetOffset, 0.1F);
_prevDrawOffsets[i] = Vector3.Slerp(_prevDrawOffsets[i], targetOffset, 0.1F);
_ribbon.Points[i] = point;
// Thickness + decay
int maxBufferSize = 16;
//int effBufferSize = Mathf.Min(maxBufferSize, _lastStrokeBuffer.Size - 1);
float thicknessCurveEvalPos = Mathf.Min(1F, (float)(_lastStrokeBuffer.Count - 1 - i) / maxBufferSize); // ([0-16]) / 8 --> 0, 1/8, 2/8, ... 1, 1, 1
float targetThickness = 0F;
if (_lastStrokeBuffer.Count > 1)
{
targetThickness = strokePoint.thickness * previewThicknessCurve.Evaluate(thicknessCurveEvalPos) * _thicknessDecayMultiplier;
}
if (i > _prevDrawRadii.Count - 1)
{
_prevDrawRadii.Add(targetThickness);
}
if (_lastStrokeBuffer.Count - 1 - i < maxBufferSize)
{
_ribbon.Radii[i] = Mathf.Lerp(_prevDrawRadii[i], targetThickness, 0.05F);
}
else
{
_ribbon.Radii[i] = 0F;
}
_prevDrawRadii[i] = _ribbon.Radii[i];
}
}
SetMeshDataFromRibbon(_mesh, _ribbon);
}
// shouldUpdateRenderers provides an optimization for updating multiple stroke points at once,
// where it's more efficient to do the updating without rendering and then refreshing renderers
// at the end.
private void UpdateStroke(StrokePoint strokePoint, bool shouldUpdateRenderers = true)
{
_strokeBuffer.Add(strokePoint);
_actualizedStrokeIdxBuffer.Add(-1);
// Apply all filters in order on current stroke buffer.
for (int i = 0; i < _strokeFilters.Count; i++)
{
_strokeFilters[i].Process(_strokeBuffer, _actualizedStrokeIdxBuffer);
}
if (_isActualizingStroke)
{
_actualizedStrokeIdxBuffer.SetLatest(_actualizedStrokeIdx++);
// Output points from the buffer to the actualized stroke output.
int offset = Mathf.Min(_outputBufferEndOffset, _strokeBuffer.Count - 1);
for (int i = 0; i <= offset; i++)
{
int outputIdx = Mathf.Max(0, _outputBufferEndOffset - (_strokeBuffer.Count - 1)) + i;
StrokePoint bufferStrokePoint = _strokeBuffer.Get(_strokeBuffer.Count - 1 - (Mathf.Min(_strokeBuffer.Count - 1, _outputBufferEndOffset) - i));
if (outputIdx > _strokeOutput.Count - 1)
{
_strokeOutput.Add(bufferStrokePoint);
}
else
{
_strokeOutput[outputIdx] = bufferStrokePoint;
}
}
_outputBufferEndOffset += 1;
// Refresh stroke renderers.
if (shouldUpdateRenderers)
{
UpdateStrokeRenderers();
}
}
// Refresh stroke preview renderers.
if (shouldUpdateRenderers)
{
UpdateStrokeBufferRenderers();
}
}
private void ProcessAddStrokePoints(List <Vector3> points, List <float> effDeltaTimes)
{
if (points.Count != effDeltaTimes.Count)
{
Debug.LogError("[PinchStrokeProcessor] Points count must match effDeltaTimes count.");
return;
}
_cachedStrokePoints.Clear();
for (int i = 0; i < points.Count; i++)
{
Vector3 point = points[i];
float effDeltaTime = effDeltaTimes[i];
bool shouldAdd = !_firstStrokePointAdded ||
Vector3.Distance(_lastStrokePointAdded, point)
>= Mathf.Lerp(MIN_THICKNESS_MIN_SEGMENT_LENGTH, MAX_THICKNESS_MIN_SEGMENT_LENGTH, _thicknessFilter._lastNormalizedValue);
_timeSinceLastAddition += effDeltaTime;
if (shouldAdd)
{
StrokePoint strokePoint = new StrokePoint();
strokePoint.position = point;
strokePoint.rotation = Quaternion.identity;
strokePoint.handOrientation = _paintCursor.Rotation * Quaternion.Euler((_paintCursor.Handedness == Chirality.Left ? leftHandEulerRotation : rightHandEulerRotation));
strokePoint.deltaTime = _timeSinceLastAddition;
_cachedStrokePoints.Add(strokePoint);
_firstStrokePointAdded = true;
_lastStrokePointAdded = strokePoint.position;
_timeSinceLastAddition = 0F;
}
}
_strokeProcessor.UpdateStroke(_cachedStrokePoints);
}
public void UpdateRenderer(List <StrokePoint> stroke, int maxChangedFromEnd)
{
if (stroke.Count <= 1 || maxChangedFromEnd == 0)
{
return;
}
if (OnUpdateRenderer != null)
{
OnUpdateRenderer(stroke, maxChangedFromEnd);
}
int startIdx = Mathf.Max(0, (stroke.Count - 1) - maxChangedFromEnd - 1);
int endIdx = stroke.Count - 1;
// Lop off outdated vertices and indices.
int expectedNewNumRibbons = stroke.Count - 1;
int firstChangedRibbonIndex = expectedNewNumRibbons - 1 - maxChangedFromEnd;
int numRibbonSegmentsOutdated = _ribbonSegments.Count - firstChangedRibbonIndex;
int numVertsOutdated = 0;
int numRibbonVertsAccountFor = 0;
int numIndicesOutdated = 0;
for (int i = 0; i < numRibbonSegmentsOutdated; i++)
{
if (i >= 0 && i < _ribbonSegments.Count)
{
numVertsOutdated += _ribbonSegments[_ribbonSegments.Count - 1 - i].NumVerts();
numRibbonVertsAccountFor++;
numIndicesOutdated += _ribbonSegments[_ribbonSegments.Count - 1 - i].NumIndices();
}
}
for (int i = 0; i < numVertsOutdated; i++)
{
if (_verts.Count > 0)
{
_verts.RemoveAt(_verts.Count - 1);
_colors.RemoveAt(_colors.Count - 1);
_normals.RemoveAt(_normals.Count - 1);
}
}
for (int i = 0; i < numIndicesOutdated; i++)
{
if (_indices.Count > 0)
{
_indices.RemoveAt(_indices.Count - 1);
}
}
// Update Ribbon Segment representation.
for (int i = startIdx; i < endIdx; i++)
{
// Define the current ribbon segment.
StrokePoint curPoint = stroke[i];
StrokePoint nextPoint = stroke[i + 1];
Vector3 curSegmentDirection = (nextPoint.position - curPoint.position).normalized;
Vector3 prevSegmentDirection = curSegmentDirection;
bool hasPrevSegment = (i > 0);
if (hasPrevSegment)
{
prevSegmentDirection = (stroke[i].position - stroke[i - 1].position).normalized;
}
Vector3 nextSegmentDirection = curSegmentDirection;
bool hasNextSegment = (i < endIdx - 1);
if (hasNextSegment)
{
nextSegmentDirection = (stroke[i + 2].position - stroke[i + 1].position).normalized;
}
bool curSegmentHasStartCap = i == 0;
if (hasPrevSegment)
{
curSegmentHasStartCap = (Vector3.Dot(prevSegmentDirection, curSegmentDirection) < -0.8F);
}
Vector3 startFacing, startNormal;
if (curSegmentHasStartCap)
{
startFacing = -curSegmentDirection;
startNormal = curPoint.normal;
}
else
{
startFacing = -(prevSegmentDirection + curSegmentDirection).normalized;
startNormal = (stroke[i - 1].normal + curPoint.normal).normalized;
}
bool curSegmentHasEndCap = i == stroke.Count - 2;
if (hasNextSegment)
{
curSegmentHasEndCap = (Vector3.Dot(curSegmentDirection, nextSegmentDirection) < -0.8F);
}
Vector3 endFacing, endNormal;
if (curSegmentHasEndCap)
{
endFacing = curSegmentDirection;
endNormal = curPoint.normal;
}
else
{
endFacing = (curSegmentDirection + nextSegmentDirection).normalized;
endNormal = (curPoint.normal + nextPoint.normal).normalized;
}
RibbonSegment curRibbonSegment = new RibbonSegment(
curPoint.position,
startFacing,
startNormal,
curPoint.thickness,
nextPoint.position,
endFacing,
endNormal,
nextPoint.thickness,
curSegmentHasStartCap,
curSegmentHasEndCap
);
// Add or modify the constructed ribbon segment
if (i > _ribbonSegments.Count - 1)
{
// Add a new ribbon segment definition.
_ribbonSegments.Add(curRibbonSegment);
}
else
{
// Modify an existing ribbon segment definition.
_ribbonSegments[i] = curRibbonSegment;
}
}
// Construct and add new vertices and indices per RibbonSegment.
for (int i = startIdx; i < endIdx; i++)
{
AddRibbonSegmentIndices(_ribbonSegments[i], _verts.Count, _indices);
AddRibbonSegmentVerts(_ribbonSegments[i], _verts, _normals);
for (int j = 0; j < _ribbonSegments[i].NumVerts(); j++) // color vertices
{
_colors.Add(stroke[i].color);
}
}
_mesh.Clear();
_mesh.SetVertices(_verts);
_mesh.SetTriangles(_indices, 0);
_mesh.SetNormals(_normals);
_mesh.SetColors(_colors);
_mesh.RecalculateBounds();
_mesh.RecalculateNormals();
_mesh.UploadMeshData(false);
_cachedStrokeRenderered = stroke;
}
public void UpdateStroke(StrokePoint strokePoint)
{
UpdateStroke(strokePoint, true);
}