Modify Length

[JKLINE]

There's a "modify length" button in Mastercam but I'm not seeing anything related in the NET-Hook API Reference.

I found the ExtendShortenContourParams but that's related to operations.

Am I missing it? Or will I need to create new geometry and delete the old geometry? (Or alter the endpoint location of the geometry)

[Roger Martin from CNC Software]

You will need to -> Create new geometry and delete the old geometry or alter the endpoint location of the geometry.

[JKLINE]

If someone needs it in the future ::

 

                foreach (var chain in selectedChains){
                    chain.Direction = chainDirection;
                    var chainData = chainDetails.GetData(chain);
                    var firstEntity = chainData.FirstEntity.GetEntityID();
                    var lastEntity = chainData.LastEntity.GetEntityID();
                    var firstIsFlipped = chainData.FirstEntityIsFlipped;
                    var lastIsFlipped = chainData.LastEntityIsFlipped;
                    if (firstIsFlipped == false){
                        var entity = Mastercam.Database.Geometry.RetrieveEntity(firstEntity);
                        if (entity is LineGeometry line){
                            Point3D lineStartPoint = (line.Data.Point1);
                            Point3D lineEndPoint = (line.Data.Point2);
                            var lineLength = VectorManager.Distance(lineStartPoint, lineEndPoint);  
                            var scale = ((lineLength-0.010)/lineLength);
                            entity.Scale(lineEndPoint, scale);
                            entity.Commit();
                        }
                        if (entity is ArcGeometry arc){
                            var arcStartPoint = (arc.Data.StartAngleDegrees);
                            var arcEndPoint = (arc.Data.EndAngleDegrees);
                            var arcRad = arc.Data.Radius;
                            var arcLength = ((arcEndPoint - arcStartPoint) * arcRad);
                            var scale = ((arcLength - 0.010)/arcLength);
                            arc.Data.StartAngleDegrees = (arcStartPoint * scale);
                            entity.Commit();
                        }
                    }

 

[JKLINE]

Correction

 

                var chainDirection = ChainDirectionType.CounterClockwise;// Going to be used to make sure all chains go the same direction
                ChainManager.StartChainAtLongest(selectedChains);
                foreach (var chain in selectedChains)
                {
                    chain.Direction = chainDirection;
                    var chainData = chainDetails.GetData(chain);
                    var firstEntity = chainData.FirstEntity.GetEntityID();
                    var lastEntity = chainData.LastEntity.GetEntityID();
                    var firstIsFlipped = chainData.FirstEntityIsFlipped;
                    var lastIsFlipped = chainData.LastEntityIsFlipped;
                    if (firstIsFlipped == false)
                    {
                        var entity = Mastercam.Database.Geometry.RetrieveEntity(firstEntity);
                        if (entity is LineGeometry line)
                        {
                            Point3D lineStartPoint = (line.Data.Point1);
                            Point3D lineEndPoint = (line.Data.Point2);
                            var lineLength = VectorManager.Distance(lineStartPoint, lineEndPoint);
                            var scale = ((lineLength - 0.010) / lineLength);
                            entity.Scale(lineEndPoint, scale);
                            entity.Commit();
                        }
                        if (entity is ArcGeometry arc)
                        {
                            var arcStartPoint = (arc.Data.StartAngleDegrees);
                            var arcEndPoint = (arc.Data.EndAngleDegrees);
                            var arcRad = arc.Data.Radius;
                            var arcLength = ((VectorManager.DegreesToRadians(arcStartPoint - arcEndPoint)) * arcRad);
                            var newArcLength = (arcLength - 0.010);
                            var circumference = 2 * Math.PI * arcRad;
                            var arcMeasure = ((newArcLength / circumference) * 360);
                            arc.Data.StartAngleDegrees = (arcEndPoint + arcMeasure);
                            entity.Color = 9;
                            entity.Commit();
                        }
                    }