X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.plant3d%2Fsrc%2Forg%2Fsimantics%2Fplant3d%2Fscenegraph%2Fcontrolpoint%2FPipingRules.java;h=b2376341985d60247dece769a5be4921be26a78b;hb=3608a1409bfa41489068f166bf30846633dbb76c;hp=10cf23e37537561774f08aaf04ed3a57f67a8397;hpb=8277a382f15615044cfaeb87a2088417bb079eab;p=simantics%2F3d.git diff --git a/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/controlpoint/PipingRules.java b/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/controlpoint/PipingRules.java index 10cf23e3..b2376341 100644 --- a/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/controlpoint/PipingRules.java +++ b/org.simantics.plant3d/src/org/simantics/plant3d/scenegraph/controlpoint/PipingRules.java @@ -138,8 +138,11 @@ public class PipingRules { public static void setEnabled(boolean enabled) { PipingRules.enabled = enabled; - if(!enabled) - currentUpdates.clear(); + if(!enabled) { + synchronized (ruleMutex) { + currentUpdates.clear(); + } + } } public static boolean isEnabled() { @@ -213,6 +216,17 @@ public class PipingRules { System.out.println("PipingRules.updateInlineControlPoint() " + pcp); PipeControlPoint start = pcp.findPreviousEnd(); updatePathLegNext(start, pcp, PathLegUpdateType.NONE); + + if (pcp.isOffset()) { + // Adjusting the rotation angle of an offset component may change variable angle turns + PipeControlPoint end = pcp.findNextEnd(); + if (end.isVariableAngle()) { + updatePathLegNext(end, end, PathLegUpdateType.NONE); + } + if (start.isVariableAngle()) { + updatePathLegPrev(start, start, PathLegUpdateType.NONE); + } + } } private static PipeControlPoint insertElbow(PipeControlPoint pcp1, PipeControlPoint pcp2, Vector3d pos) throws Exception{ @@ -277,6 +291,9 @@ public class PipingRules { scp.insert(pcp1, pcp2); scp.setWorldPosition(pos); + Vector3d dir = new Vector3d(); + dir.sub(pcp2.getWorldPosition(), pcp1.getWorldPosition()); + updateControlPointOrientation(scp, dir); scp.setLength(length); validate(scp.getPipeRun()); return scp; @@ -363,26 +380,18 @@ public class PipingRules { } - @SuppressWarnings("unused") - private static boolean calculateOffset(Vector3d startPoint, Vector3d endPoint, PipeControlPoint start, ArrayList list, PipeControlPoint end, Vector3d dir, Vector3d offset) { - boolean hasOffsets = false; - List offsets = new ArrayList(list.size()); - // Only start offset affects the calculation - if (start.isOffset()) - offsets.add(start); - for (PipeControlPoint icp : list) { - if (icp.isOffset()) { - offsets.add(icp); - } else if (icp.isDualSub()) - ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!")); - } + public static boolean calculateDirectedOffset(Vector3d startPoint, Vector3d endPoint, PipeControlPoint start, ArrayList list, PipeControlPoint end, Vector3d dir, Vector3d offset) { + return calculateOffset(startPoint, endPoint, start, list, end, dir, offset, true); + } + + public static boolean calculateOffset(Vector3d startPoint, Vector3d endPoint, PipeControlPoint start, ArrayList list, PipeControlPoint end, Vector3d dir, Vector3d offset) { + return calculateOffset(startPoint, endPoint, start, list, end, dir, offset, false); + } + + private static boolean calculateOffset(Vector3d startPoint, Vector3d endPoint, PipeControlPoint start, ArrayList list, PipeControlPoint end, Vector3d dir, Vector3d offset, boolean directed) { + List offsets = getOffsetPoints(start, list); if (offsets.size() == 0) { - dir.set(endPoint); - dir.sub(startPoint); - double l = dir.lengthSquared(); - if (l > MathTools.NEAR_ZERO) - dir.scale(1.0/Math.sqrt(l)); - offset.set(0.0, 0.0, 0.0); + setZeroOffset(startPoint, endPoint, dir, offset); return false; } else { Vector3d sp = new Vector3d(startPoint); @@ -392,8 +401,9 @@ public class PipingRules { double l = dir.lengthSquared(); if (l > MathTools.NEAR_ZERO) dir.scale(1.0/Math.sqrt(l)); + int iter = 100; - while (iter >= 0) { + while (true) { iter--; offset.set(0.0, 0.0, 0.0); @@ -401,11 +411,16 @@ public class PipingRules { Vector3d v = icp.getSizeChangeOffsetVector(dir); offset.add(v); } + + if (directed) + break; + Point3d nep = new Point3d(endPoint); nep.sub(offset); - if (nep.distance(ep) < 0.0000000001) { + if (nep.distance(ep) < 0.0000000001 || iter <= 0) { break; - } + } + ep = nep; dir.set(ep); dir.sub(sp); @@ -413,14 +428,37 @@ public class PipingRules { if (l > MathTools.NEAR_ZERO) dir.scale(1.0/Math.sqrt(l)); } - hasOffsets = true; + + if (DEBUG) + System.out.println("calcOffset s:"+ startPoint + " e:" + endPoint + " d:" + dir + " o:"+offset) ; + + return true; } - - if (DEBUG && hasOffsets) - System.out.println("calcOffset s:"+ startPoint + " e:" + endPoint + " d:" + dir + " o:"+offset) ; - return hasOffsets; } + public static void setZeroOffset(Vector3d startPoint, Vector3d endPoint, Vector3d dir, Vector3d offset) { + dir.set(endPoint); + dir.sub(startPoint); + double l = dir.lengthSquared(); + if (l > MathTools.NEAR_ZERO) + dir.scale(1.0/Math.sqrt(l)); + offset.set(0.0, 0.0, 0.0); + } + + public static List getOffsetPoints(PipeControlPoint start, ArrayList list) { + List offsets = new ArrayList(list.size()); + // Only start offset affects the calculation + if (start.isOffset()) + offsets.add(start); + for (PipeControlPoint icp : list) { + if (icp.isOffset()) { + offsets.add(icp); + } else if (icp.isDualSub()) + ErrorLogger.defaultLogError("Updating pipe run, found offset controlpoint " + icp, new Exception("ASSERT!")); + } + return offsets; + } + private static UpdateStruct2 createUS(PipeControlPoint start, Direction direction, int iter, ArrayList toRemove, PipeControlPoint updated) { ArrayList list = new ArrayList(); PipeControlPoint end = null; @@ -447,10 +485,24 @@ public class PipingRules { Vector3d endPoint = end.getWorldPosition(); Vector3d dir = new Vector3d(); hasOffsets = calculateOffset(startPoint, endPoint, start, list, end, dir, offset); - System.out.println(); return new UpdateStruct2(start, startPoint, list, end, endPoint, dir, offset, hasOffsets, iter, direction == Direction.PREVIOUS, toRemove, updated); } + private static Vector3d pathLegDirection(PipeControlPoint start) { + ArrayList list = new ArrayList(); + PipeControlPoint end = start.findNextEnd(list); + if (start == end) { + return start.getDirection(Direction.NEXT); + } + + Vector3d offset = new Vector3d(); + Vector3d startPoint = start.getWorldPosition(); + Vector3d endPoint = end.getWorldPosition(); + Vector3d dir = new Vector3d(); + calculateOffset(startPoint, endPoint, start, list, end, dir, offset); + return dir; + } + private static boolean asDirected(PipeControlPoint pcp, Direction direction) { if (pcp.isDirected()) return true; @@ -707,7 +759,7 @@ public class PipingRules { continue; double curr = gapObj.d; int d = 1; - while (curr < -MIN_INLINE_LENGTH) { + while (d < gaps.size() && curr < -MIN_INLINE_LENGTH) { GapObj next = i+d >= 0 ? gaps.get(i+d) : null; GapObj prev = i-d >= 0 ? gaps.get(i-d) : null; if (next != null && next.gap == Gap.SPACE) { @@ -726,12 +778,12 @@ public class PipingRules { pcp.first.setWorldPosition(p); } } - if (curr < -MIN_INLINE_LENGTH && prev != null && prev.gap == Gap.SPACE) { + else if (prev != null && prev.gap == Gap.SPACE) { double move = Math.min(-curr, prev.d); curr+= move; - next.d -= move; - if (next.d < MIN_INLINE_LENGTH) - next.gap = Gap.ATTACHED; + prev.d -= move; + if (prev.d < MIN_INLINE_LENGTH) + prev.gap = Gap.ATTACHED; Vector3d mv = new Vector3d(dir); mv.normalize(); mv.scale(-move); @@ -742,6 +794,9 @@ public class PipingRules { pcp.first.setWorldPosition(p); } } + else { + d++; + } } } } else { @@ -865,7 +920,8 @@ public class PipingRules { double l2next = icp.getInlineLength(); double l2 = l2prev + l2next; double l2s = l2 * l2; - if (l > l2s) { + double diff = l - l2s; + if (diff >= MIN_INLINE_LENGTH) { if (allowInsertRemove) { dir.normalize(); double length = Math.sqrt(l) - l2; // true length of the variable length component @@ -887,7 +943,11 @@ public class PipingRules { Vector3d dir = new Vector3d(); dir.sub(currentPos, prevPos); - boolean simple = currentUpdates.contains(icp); + boolean simple; + synchronized (ruleMutex) { + simple = currentUpdates.contains(icp); + } + if (simple) { // Update based on position -> adjust length double currentLength = (dir.length() - prev.getInlineLength()) * 2.0; @@ -926,12 +986,17 @@ public class PipingRules { } } - private static void ppNoOffset(UpdateStruct2 u) throws Exception { + /** + * Recalculates offset vector based on current direction, and calls checkExpandPathLeg + * @param u + * @param updateEnds + * @throws Exception + */ + private static void ppNoOffset(UpdateStruct2 u, boolean updateEnds) throws Exception { if (DEBUG) System.out.println("PipingRules.ppNoOffset() " + u); Vector3d offset = new Vector3d(); if (u.hasOffsets) { - u.dir.normalize(); for (PipeControlPoint icp : u.list) { if (icp.isOffset()) { offset.add(icp.getSizeChangeOffsetVector(u.dir)); @@ -940,7 +1005,7 @@ public class PipingRules { } } u.offset = offset; - checkExpandPathLeg(u, PathLegUpdateType.NONE); + checkExpandPathLeg(u, PathLegUpdateType.NONE, updateEnds); } private static void ppNoDir(PipeControlPoint start, Vector3d startPoint, ArrayList list, PipeControlPoint end, Vector3d endPoint, boolean hasOffsets, int iter, boolean reversed, ArrayList toRemove, PipeControlPoint updated) throws Exception { @@ -950,7 +1015,7 @@ public class PipingRules { Vector3d dir = new Vector3d(); Vector3d offset = new Vector3d(); hasOffsets = calculateOffset(startPoint, endPoint, start, list, end, dir, offset); - ppNoOffset(new UpdateStruct2(start, startPoint, list, end, endPoint, dir, null, hasOffsets, iter, reversed, toRemove, updated)); + ppNoOffset(new UpdateStruct2(start, startPoint, list, end, endPoint, dir, null, hasOffsets, iter, reversed, toRemove, updated),true); } private static void checkExpandPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception { @@ -990,7 +1055,7 @@ public class PipingRules { position = u.startPoint; dcpStart = true; if (!u.reversed) - canMoveOther = true; + canMoveOther = true; inlineEnd = u.end.isInline(); } else { @@ -998,10 +1063,10 @@ public class PipingRules { other = u.start; position = u.endPoint; if (u.reversed) - canMoveOther = true; + canMoveOther = true; inlineEnd = u.start.isInline(); } - + Vector3d directedDirection = direction(dcp, dcpStart ? Direction.NEXT : Direction.PREVIOUS); if (directedDirection == null) { //updateTurnControlPointTurn(dcp, dcp.getPrevious(), dcp.getNext()); @@ -1011,30 +1076,44 @@ public class PipingRules { return; } } - Point3d directedEndPoint = new Point3d(u.endPoint); - if (u.hasOffsets) - directedEndPoint.add(u.offset); + + Point3d otherPosition = new Point3d(dcpStart ? u.endPoint : u.startPoint); + if (u.hasOffsets) { + Vector3d dir = new Vector3d(), offset = new Vector3d(); + calculateDirectedOffset(u.startPoint, u.endPoint, u.start, u.list, u.end, dir, offset); + u.dir = dir; + u.offset = offset; + + if (dcpStart) + otherPosition.add(offset); + else + otherPosition.sub(offset); + } double mu[] = new double[2]; Vector3d closest; Vector3d t = new Vector3d(); - if (dcpStart) { - closest = MathTools.closestPointOnStraight(directedEndPoint, u.startPoint, directedDirection, mu); - t.sub(closest, directedEndPoint); - } else { - closest = MathTools.closestPointOnStraight(u.startPoint, directedEndPoint, directedDirection, mu); - t.sub(closest, u.startPoint); - } + closest = MathTools.closestPointOnStraight(otherPosition, position, directedDirection, mu); + t.sub(closest, otherPosition); double distance = t.length(); boolean aligned = (distance < ALLOWED_OFFSET); + double requiredSpace = 0.0; + if (other.isVariableAngle()) { + requiredSpace = spaceForTurn(other, dcp); + } + if (mu[0] < requiredSpace) { + // At the moment, if next component is directly behind the nozzle, we must force moving the other component. + // Trying to solve the situation by adding new turn creates infinite loop... + aligned = false; + canMoveOther = true; + } if (aligned) { - if (u.start.isInline() || u.end.isInline() || u.start.asFixedAngle() || u.end.asFixedAngle()) - processPathLeg(u, true, false); - checkExpandPathLeg(u, lengthChange, inlineEnd); - + //if (u.start.isInline() || u.end.isInline() || u.start.asFixedAngle() || u.end.asFixedAngle()) + // processPathLeg(u, true, false); + checkExpandPathLeg(u, lengthChange, inlineEnd || u.start.isInline() || u.end.isInline() || u.start.asFixedAngle() || u.end.asFixedAngle()); } else { if (u.iter > 0) { backIter(u); @@ -1053,28 +1132,40 @@ public class PipingRules { if (other.isVariableAngle()) { // TODO calculate needed space from next run end. - double space = spaceForTurn(other); - if (mu[0] < space) { + if (mu[0] < requiredSpace) { if (dcpStart) { closest.set(u.startPoint); } else { closest.set(u.endPoint); } Vector3d v = new Vector3d(directedDirection); - v.scale(space); + v.scale(requiredSpace); closest.add(v); } if (canMoveOther) { if (DEBUG) System.out.println("PipingRules.updateDirectedPipeRun() moved end " + other + " to " + closest); + + // Not aligned - we need to recalculate the offset to reflect new end points. + Vector3d offset; + if (u.hasOffsets) { + offset = new Vector3d(); + Vector3d newDir = new Vector3d(); + calculateDirectedOffset(position, closest, u.start, u.list, u.end, newDir, offset); + closest.add(offset); + } else { + offset = new Vector3d(); + } + other.setWorldPosition(closest); + if (dcpStart) { - ppNoOffset(new UpdateStruct2(u.start, u.startPoint, u.list, u.end, new Vector3d(closest), directedDirection, null, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated)); + checkExpandPathLeg(new UpdateStruct2(u.start, u.startPoint, u.list, u.end, new Vector3d(closest), directedDirection, offset, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated), PathLegUpdateType.NONE, true); if (u.end.getNext() != null) updatePathLegNext(u.end, u.updated, PathLegUpdateType.NEXT); } else { - ppNoOffset(new UpdateStruct2(u.start, new Vector3d(closest), u.list, u.end, u.endPoint, directedDirection, null, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated)); + checkExpandPathLeg(new UpdateStruct2(u.start, new Vector3d(closest), u.list, u.end, u.endPoint, directedDirection, offset, u.hasOffsets, u.iter, u.reversed, u.toRemove, u.updated), PathLegUpdateType.NONE, true); if (u.start.getPrevious() != null) updatePathLegPrev(u.start, u.updated, PathLegUpdateType.PREV); } @@ -1082,7 +1173,6 @@ public class PipingRules { // TODO : calculate needed space from next run end. if (allowInsertRemove) insertElbowUpdate(u, dcp, nextToMoved, dcpStart, position, directedDirection); - else triedIR = true; } @@ -1134,8 +1224,6 @@ public class PipingRules { } } } - - } private static void updateDualDirectedPathLeg(UpdateStruct2 u, PathLegUpdateType lengthChange) throws Exception { @@ -1146,14 +1234,19 @@ public class PipingRules { PipeControlPoint dcp2 = u.end; Point3d position1 = new Point3d(u.startPoint); Point3d position2 = new Point3d(u.endPoint); + + Vector3d dir = new Vector3d(), offset = new Vector3d(); + calculateDirectedOffset(new Vector3d(position1), new Vector3d(position2), u.start, u.list, u.end, dir, offset); + Point3d position1offset = new Point3d(position1); - position1offset.sub(u.offset); + position1offset.add(offset); Point3d position2offset = new Point3d(position2); - position2offset.add(u.offset); + position2offset.sub(offset); Vector3d dir1 = direction(dcp1, Direction.NEXT); Vector3d dir2 = direction(dcp2, Direction.PREVIOUS); - Vector3d p1 = MathTools.closestPointOnStraight(position1offset, position2, dir2); - Vector3d p2 = MathTools.closestPointOnStraight(position2offset, position1, dir1); + + Vector3d p1 = MathTools.closestPointOnStraight(position1, position2offset, dir2); + Vector3d p2 = MathTools.closestPointOnStraight(position2, position1offset, dir1); double d1 = position1.distance(new Point3d(p1)); double d2 = position2.distance(new Point3d(p2)); @@ -1193,9 +1286,9 @@ public class PipingRules { p1.add(v); if (!u.reversed) - p2 = MathTools.closestPointOnStraight(new Point3d(p1), position2, dir2); + p2 = MathTools.closestPointOnStraight(new Point3d(p1), position2offset, dir2); else - p2 = MathTools.closestPointOnStraight(new Point3d(p1), position1, dir1); + p2 = MathTools.closestPointOnStraight(new Point3d(p1), position1offset, dir1); // By default, the elbows are placed next to each other, by using 90 deg angles. // If the distance between elbows is not enough, we must move the other elbow (and create more shallow angle elbows) @@ -1237,11 +1330,71 @@ public class PipingRules { } - private static double spaceForTurn(PipeControlPoint tcp) { - // TODO : this returns now space for 90 deg turn. - // The challenge: position of tcp affects the turn angle, which then affects the required space. Perhaps we need to iterate... - // Additionally, if the path legs contain offset, using just positions of opposite path leg ends is not enough, - return ((TurnComponent)tcp.getPipelineComponent()).getTurnRadius(); + private static double spaceForTurn(PipeControlPoint tcp, PipeControlPoint dcp) { + // TODO : if the path legs contain offset, using just positions of opposite path leg ends is not enough. + // TODO : current iterative way for calculating required space may return longer length that is required. + double tr = ((TurnComponent)tcp.getPipelineComponent()).getTurnRadius(); + if (dcp == null) + return tr; // space for 90 deg + PipeControlPoint ne = tcp.findNextEnd(); + PipeControlPoint pe = tcp.findPreviousEnd(); + PipeControlPoint other = null; + if (dcp == ne) + other = pe; + else if (dcp == pe) + other = ne; + else + return tr; // space for 90 deg + if (other == null) + return tr; // space for 90 deg + Vector3d dir = dcp.getDirectedControlPointDirection(); + Vector3d dir2; + if (other == ne) { + dir2 = pathLegDirection(tcp); + } else { + dir2 = pathLegDirection(pe); + dir2.negate(); + } + + double d = dir.dot(dir2); + if (d > 0.9999) + return 0.0; // point following turn is directly in the front of the nozzle. + else if (d < -0.9999) + return tr*2.0; // point following turn is directly behind the nozzle, in theory, we should return Double.Inf... + + double curr = 0.0; + int iter = 10; + Vector3d tp0 = tcp.getPosition(); + try { + Vector3d dp = dcp.getWorldPosition(); + while (iter > 0) { + Vector3d tp = new Vector3d(dir); + tp.scaleAdd(curr, dp); + tcp._setPosition(tp); // no firing of listeners here + if (other == ne) { + dir2 = pathLegDirection(tcp); + } else { + dir2 = pathLegDirection(pe); + dir2.negate(); + } + + double a = dir.angle(dir2); + + // other is directly between dcp and tcp, a zero angle turn should do + if (Math.PI - a <= MathTools.NEAR_ZERO) + return 0.0; + + double R = tr * Math.tan(a * 0.5); + if (R <= curr) + break; + curr = R*1.001; + iter--; + } + } + finally { + tcp._setPosition(tp0); // return the original value + } + return curr; } private static void insertElbowUpdate(UpdateStruct2 u, PipeControlPoint dcp, PipeControlPoint next, boolean dcpStart, Vector3d position, Vector3d directedDirection) throws Exception{ @@ -1251,27 +1404,19 @@ public class PipingRules { // closest.add(directedDirection); PipeControlPoint tcp = null; - Vector3d closest; + Vector3d closest = new Vector3d(directedDirection); + closest.scaleAdd(dcp.getPipeRun().getTurnRadius(), position); if (dcpStart) { - closest = MathTools.closestPointOnStraight(next.getWorldPosition(), position, directedDirection); tcp = insertElbow(dcp, next, closest); } else { - closest = MathTools.closestPointOnStraight(dcp.getWorldPosition(), position, directedDirection); tcp = insertElbow(next, dcp, closest); } - // TODO properly calculate required distance between start and inserted elbow. - double d = MathTools.distance(position, closest); - double s = spaceForTurn(tcp); - if (d < s) { - d = s - d; - Vector3d p = new Vector3d(directedDirection); - p.scale(d); - p.add(closest); - tcp.setPosition(p); - closest = p; - } - + double s = spaceForTurn(tcp,dcp); + Vector3d p = new Vector3d(directedDirection); + p.scaleAdd(s, position); + tcp.setPosition(p); + closest = p; if (DEBUG) System.out.println("PipingRules.updateDirectedPipeRun() inserted " + tcp); @@ -1645,9 +1790,9 @@ public class PipingRules { private static void updateEndComponentControlPoint(PipeControlPoint ecp, Vector3d dir) throws Exception { if (DEBUG) System.out.println("PipingRules.updateEndComponentControlPoint() " + ecp); - //FIXME : end control point cannot be fixed! - //if (!ecp.isFixed()) - updateControlPointOrientation(ecp, dir); + + if (!ecp.isFixed()) // prevent overriding nozzle orientations.. + updateControlPointOrientation(ecp, dir); for (PipeControlPoint pcp : ecp.getChildPoints()) { // TODO update position @@ -1713,15 +1858,15 @@ public class PipingRules { return tcp.getTurnAngle(); return Math.PI; // FIXME : argh } - double turnAngle = prev.angle(next); - - double angle = Math.PI - turnAngle; + + final boolean isDegenerate = prev.lengthSquared() < MathTools.NEAR_ZERO || next.lengthSquared() < MathTools.NEAR_ZERO; + double turnAngle = isDegenerate ? 0.0 : prev.angle(next); Vector3d turnAxis = new Vector3d(); turnAxis.cross(prev, next); if (turnAxis.lengthSquared() > MathTools.NEAR_ZERO) { double elbowRadius = ((TurnComponent)tcp.getPipelineComponent()).getTurnRadius(); - double R = elbowRadius / Math.tan(angle * 0.5); + double R = elbowRadius * Math.tan(turnAngle * 0.5); turnAxis.normalize(); tcp.setTurnAngle(turnAngle); @@ -1763,7 +1908,7 @@ public class PipingRules { return Math.PI; // FIXME : argh } - Quat4d q = PipeControlPoint.getControlPointOrientationQuat(dir, tcp.getRotationAngle() != null ? tcp.getRotationAngle() : 0.0); + Quat4d q = tcp.getControlPointOrientationQuat(dir, tcp.getRotationAngle() != null ? tcp.getRotationAngle() : 0.0); Vector3d v = new Vector3d(); MathTools.rotate(q, MathTools.Y_AXIS,v); tcp.setTurnAxis(v); @@ -1844,7 +1989,6 @@ public class PipingRules { List list2 = pcps.get(i+1); PipeControlPoint prev = list.get(list.size()-1); PipeControlPoint next = list2.get(0); - System.out.println(); if (prev == next) { // Reverse the component on the boundary. InlineComponent ic = (InlineComponent)prev.getPipelineComponent();