private PlaneConvexSubset extrudeSideInfinite()

in commons-geometry-euclidean/src/main/java/org/apache/commons/geometry/euclidean/threed/Planes.java [839:889]
39 lines of code
7 McCabe index (conditional complexity)

        private PlaneConvexSubset extrudeSideInfinite(final LineConvexSubset lineSubset) {
            final Vector2D subLinePt = lineSubset.getLine().getOrigin();
            final Vector2D subLineDir = lineSubset.getLine().getDirection();

            final Vector3D linePt = basePlane.toSpace(subLinePt);
            final Vector3D lineDir = linePt.vectorTo(basePlane.toSpace(subLinePt.add(subLineDir)));

            final EmbeddingPlane sidePlane;
            if (extrudingOnPlusSide) {
                sidePlane = fromPointAndPlaneVectors(linePt, lineDir, extrusionVector, precision);
            } else {
                sidePlane = fromPointAndPlaneVectors(linePt, extrusionVector, lineDir, precision);
            }

            final Vector2D sideLineOrigin = sidePlane.toSubspace(linePt);
            final Vector2D sideLineDir = sideLineOrigin.vectorTo(sidePlane.toSubspace(linePt.add(lineDir)));

            final Vector2D extrudedSideLineOrigin = sidePlane.toSubspace(linePt.add(extrusionVector));

            final Vector2D sideExtrusionDir = sidePlane.toSubspace(sidePlane.getOrigin().add(extrusionVector))
                    .normalize();

            // construct a list of lines forming the bounds of the extruded subspace region
            final List<Line> lines = new ArrayList<>();

            // add the top and bottom lines (original and extruded)
            if (extrudingOnPlusSide) {
                lines.add(Lines.fromPointAndDirection(sideLineOrigin, sideLineDir, precision));
                lines.add(Lines.fromPointAndDirection(extrudedSideLineOrigin, sideLineDir.negate(), precision));
            } else {
                lines.add(Lines.fromPointAndDirection(sideLineOrigin, sideLineDir.negate(), precision));
                lines.add(Lines.fromPointAndDirection(extrudedSideLineOrigin, sideLineDir, precision));
            }

            // if we have a point on the original line, then connect the two
            final Vector2D startPt = lineSubset.getStartPoint();
            final Vector2D endPt = lineSubset.getEndPoint();
            if (startPt != null) {
                lines.add(Lines.fromPointAndDirection(
                        sidePlane.toSubspace(basePlane.toSpace(startPt)),
                        extrudingOnPlusSide ? sideExtrusionDir.negate() : sideExtrusionDir,
                        precision));
            } else if (endPt != null) {
                lines.add(Lines.fromPointAndDirection(
                        sidePlane.toSubspace(basePlane.toSpace(endPt)),
                        extrudingOnPlusSide ? sideExtrusionDir : sideExtrusionDir.negate(),
                        precision));
            }

            return subsetFromConvexArea(sidePlane, ConvexArea.fromBounds(lines));
        }