/// <summary>
/// Updates the extrusion with the given <see cref="_discretization"/> and <see cref="Extrusion"/> values.
/// Updates the <see cref="MeshFilter"/> component with the resulting Mesh.
/// </summary>
public void UpdateExtrusion()
{
if (_meshFilter == null)
{
_meshFilter = GetComponent <MeshFilter>();
}
if (_meshRenderer == null)
{
_meshRenderer = GetComponent <MeshRenderer>();
}
bool doExtrusion = Math.Abs(_extrusion) > ExtrusionNumericalPrecision.MinimumExtrusionDistanceExclusive;
if (doExtrusion)
{
try
{
_lineExtrusionConfiguration = GetLineExtrusionConfiguration(_extrusion);
_extrusionResults = SegmentedLineExtrusionFromIntersection.ExtrudeSegmentedLineBothDirections(this, _lineExtrusionConfiguration);
var linePointsWithUVs = LineSegmentation.GetLinePointsUV(this);
var segmentwiseLinePointList = new SegmentwiseLinePointListUV(linePointsWithUVs);
_extrudedMesh = ExtrusionTriangulator2D.TriangulatePolygon(_extrusionResults, segmentwiseLinePointList, _lineExtrusionConfiguration);
var verts = _extrudedMesh.vertices;
for (int i = 0; i < verts.Length; i++)
{
verts[i] = transform.InverseTransformPoint(verts[i]);
}
_extrudedMesh.vertices = verts;
_meshFilter.mesh = _extrudedMesh;
bool singleContour = _extrusionResults.Contours.Count <= 1;
_meshRenderer.material = singleContour ? _singleContourMaterial : _multipleContourMaterial;
(singleContour ? OnSingleContourExtrusionUpdated : OnMultipleContourExtrusionUpdated).Invoke();
}
catch (Exception e)
{
Debug.LogWarning(string.Format("Error in extrusion of amount {0}: {1}\n{2}.", _extrusion, e.Message, e.StackTrace));
_extrudedMesh = new Mesh();
_meshFilter.mesh = _extrudedMesh;
}
finally
{
}
}
else
{
_extrudedMesh = new Mesh();
_meshFilter.mesh = _extrudedMesh;
}
}
/// <summary>
/// Return <see cref="LineExtrusionResults"/> containing contiguous lines of extruded points.
/// </summary>
/// <param name="originalLine">The line points to be extruded.</param>
/// <param name="lineExtrusionConfiguration">The extrusion configuration.</param>
public static LineExtrusionResults ExtrudeSegmentedLineBothDirections(ILineSegmentation originalLine, LineExtrusionConfiguration lineExtrusionConfiguration)
{
var originalLinePointsUV = LineSegmentation.GetLinePointsUV(originalLine);
LineExtrusionResults results;
if (originalLinePointsUV.Count >= 2)
{
var extrudedSubspaceTotal = SegmentedLineExtrusionFromSegments.GetExtrudedSubspaceAllSides(originalLinePointsUV, lineExtrusionConfiguration.ExtrusionAmount);
results = GetExtrudedLines(originalLinePointsUV, extrudedSubspaceTotal, lineExtrusionConfiguration);
}
else
{
results = LineExtrusionResults.Empty;
}
return(results);
}
/// <summary> Draw scene GUI for the spline and extrusion. </summary>
protected override void OnSceneGUI()
{
base.OnSceneGUI();
var bezierSpline2D = target as BezierSpline2DSegmentable;
var segmentedLine = LineSegmentation.GetLinePointsUV(bezierSpline2D);
bool draw = true;
if (draw)
{
Handles.color = Color.grey;
for (int i = 0; i < segmentedLine.Count - 1; i++)
{
var p0 = segmentedLine[i].Point;
var p1 = segmentedLine[i + 1].Point;
Handles.DrawLine(p0, p1);
Handles.RectangleHandleCap(-1, p0, Quaternion.identity, 0.001f, EventType.Repaint);
}
var extrudedSegmentContours = bezierSpline2D.ExtrusionResults.Contours;
var colors = new List <Color>()
{
Color.red, Color.yellow, Color.blue, Color.magenta, Color.cyan, Color.green, Color.grey,
Color.red * 0.5f, Color.yellow * 0.5f, Color.blue * 0.5f, Color.magenta * 0.5f, Color.cyan * 0.5f, Color.green * 0.5f, Color.grey * 0.5f,
};
for (int i = 0; i < extrudedSegmentContours.Count; i++)
{
Handles.color = colors[i % colors.Count];
var points = extrudedSegmentContours[i];
for (int j = 0; j < points.Length - 1; j++)
{
var p0 = points[j].Vector;
var p1 = points[j + 1].Vector;
Handles.DrawLine(p0, p1);
Handles.RectangleHandleCap(-1, p0, Quaternion.identity, 0.001f, EventType.Repaint);
}
Handles.RectangleHandleCap(-1, extrudedSegmentContours[i][extrudedSegmentContours[i].Length - 1].Vector, Quaternion.identity, 0.001f, EventType.Repaint);
}
var removedColors = new List <Color>()
{
Color.black, Color.blue * 0.25f, Color.green * 0.25f, Color.red * 0.25f,
};
var removedContours = bezierSpline2D.ExtrusionResults.RemovedContours;
for (int i = 0; i < removedContours.Count; i++)
{
Handles.color = removedColors[i % removedColors.Count];
var points = removedContours[i];
for (int j = 0; j < points.Length - 1; j++)
{
var p0 = points[j].Vector;
var p1 = points[j + 1].Vector;
Handles.DrawLine(p0, p1);
Handles.RectangleHandleCap(-1, p0, Quaternion.identity, 0.001f, EventType.Repaint);
}
Handles.RectangleHandleCap(-1, removedContours[i][removedContours[i].Length - 1].Vector, Quaternion.identity, 0.001f, EventType.Repaint);
}
bool drawExtrudedOriginal = false;
if (drawExtrudedOriginal)
{
var extrudedOrig = SegmentedLineExtrusionFromSegments.GetExtrudedSubspaceAllSides(segmentedLine, bezierSpline2D.Extrusion);
for (int i = 0; i < extrudedOrig.Count - 1; i++)
{
float fraction = i / (float)extrudedOrig.Count;
Handles.color = (Color.green * fraction + Color.black * (1f - fraction)) * 0.2f;
Handles.DrawLine(extrudedOrig[i].Point, extrudedOrig[i + 1].Point);
Handles.RectangleHandleCap(-1, extrudedOrig[i].Point, Quaternion.identity, 0.00125f, EventType.Repaint);
}
Handles.RectangleHandleCap(-1, extrudedOrig[extrudedOrig.Count - 1].Point, Quaternion.identity, 0.00125f, EventType.Repaint);
}
}
}