nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Update Point in Polyline. C#

RustamTimerbaev

            int hitPartIndex;             hitPartIndex = gcPolyline.GeometryCount;             hitPartIndex--;               IGeometry geometry = gcPolyline.get_Geometry(hitPartIndex);                var pointCollection = (IPointCollection4)geometry;                int indextransformPoint;               indextransformPoint = pointCollection.PointCount;               indextransformPoint--;                Double zOffset = Convert.ToDouble( textBox3.Text);                MessageBox.Show("zOffset = " + textBox3.Text);                            if (zOffset == 0 )                   return gcPolyline as IPolyline;             IPoint TestPoint;             TestPoint = pointCollection.get_Point(0);             TestPoint.X = pointCollection.get_Point(0).X;             TestPoint.Y = pointCollection.get_Point(0).Y;             TestPoint.Z = pointCollection.get_Point(0).Z + zOffset;              MessageBox.Show("test.z = " + TestPoint.Z.ToString());              var transform3D = (ITransform3D)TestPoint;             transform3D.Move3D(0, 0, zOffset);             pointCollection.UpdatePoint(indextransformPoint, TestPoint);

Here i have 2 message boxes. First: zOffset = 150. Second: test.z = 223. But in selected polyline Z-value not change, why?

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Accepted answers

RustamTimerbaev

richwawr, thank you for help. I found working example for this question.

        IApplication m_application;          public frmSetHeight()         {             InitializeComponent();         }          private void btnCancel_Click(object sender, EventArgs e)         {             this.Close();         }          private void btnOK_Click(object sender, EventArgs e)         {             m_application = AddHeight.ArcScene.Application;             ISxDocument pDoc =  ArcScene.Document;             IFeatureLayer pFtrLyr = GetCurrentFeatyreLayer();             IFeatureSelection pFtrSel = pFtrLyr as IFeatureSelection;                          IQueryFilter pFilter = new QueryFilterClass();             pFilter.WhereClause = "";             ICursor cursor;             pFtrSel.SelectionSet.Search(pFilter, false, out cursor);             IFeatureCursor pFtrCsr = cursor as IFeatureCursor;             IFeature pFtr = pFtrCsr.NextFeature();                          while(pFtr != null)             {                 ITransform3D trans3D = pFtr.Shape as ITransform3D;                 double dx = 0;                 double dy = 0;                 double dz = Convert.ToDouble(textBox1.Text);                  trans3D.Move3D(dx, dy,dz);                 pFtr.Store();                 pFtr = pFtrCsr.NextFeature();                              }                pDoc.Scene.SceneGraph.Invalidate (pFtrLyr, true, true );             pDoc.Scene.SceneGraph.RefreshViewers();         }          private IFeatureLayer GetCurrentFeatyreLayer()         {             var pLayer = ((ISxDocument)m_application.Document).SelectedLayer;             return pLayer as IFeatureLayer;         }

All comments

RustamTimerbaev

richwawr, thank you for help. I found working example for this question.

        IApplication m_application;          public frmSetHeight()         {             InitializeComponent();         }          private void btnCancel_Click(object sender, EventArgs e)         {             this.Close();         }          private void btnOK_Click(object sender, EventArgs e)         {             m_application = AddHeight.ArcScene.Application;             ISxDocument pDoc =  ArcScene.Document;             IFeatureLayer pFtrLyr = GetCurrentFeatyreLayer();             IFeatureSelection pFtrSel = pFtrLyr as IFeatureSelection;                          IQueryFilter pFilter = new QueryFilterClass();             pFilter.WhereClause = "";             ICursor cursor;             pFtrSel.SelectionSet.Search(pFilter, false, out cursor);             IFeatureCursor pFtrCsr = cursor as IFeatureCursor;             IFeature pFtr = pFtrCsr.NextFeature();                          while(pFtr != null)             {                 ITransform3D trans3D = pFtr.Shape as ITransform3D;                 double dx = 0;                 double dy = 0;                 double dz = Convert.ToDouble(textBox1.Text);                  trans3D.Move3D(dx, dy,dz);                 pFtr.Store();                 pFtr = pFtrCsr.NextFeature();                              }                pDoc.Scene.SceneGraph.Invalidate (pFtrLyr, true, true );             pDoc.Scene.SceneGraph.RefreshViewers();         }          private IFeatureLayer GetCurrentFeatyreLayer()         {             var pLayer = ((ISxDocument)m_application.Document).SelectedLayer;             return pLayer as IFeatureLayer;         }

RustamTimerbaev

Oh, ok, IGeometryBridge more hardest. Please see that, i think, error in function call.

            IPolyline pl = null;
            IFeature feature;
            pl = (IPolyline)feature.Shape;
            feature.Shape = ModifyVertexOfAPolyline((IGeometryCollection)pl);

ModifyVertexOfAPolyline:

        private IPolyline ModifyFirstVertexOfAPolyline(IGeometryCollection gcPolyline)
        {
            int hitPartIndex = 0;
            hitPartIndex = gcPolyline.GeometryCount;
            hitPartIndex--;
              IGeometry geometry = gcPolyline.get_Geometry(hitPartIndex);

              var pointCollection = (IPointCollection4)geometry;

              int indextransformPoint = 1;
              indextransformPoint = pointCollection.PointCount;
              MessageBox.Show("indexTransformPoint = " + indextransformPoint.ToString() + 
                  "\nhitPartIndex = " + hitPartIndex.ToString());

              indextransformPoint--;

              Double zOffset = Convert.ToDouble( textBox3.Text);
              if (zOffset == 0 )
                  return gcPolyline as IPolyline;
            IPoint TestPoint;
            TestPoint = pointCollection.get_Point(indextransformPoint);
            IZAware zAware = TestPoint as IZAware;
            zAware.ZAware = true;
            TestPoint.X = pointCollection.get_Point(indextransformPoint).X;
            TestPoint.Y = pointCollection.get_Point(indextransformPoint).Y;
            TestPoint.Z = pointCollection.get_Point(indextransformPoint).Z + zOffset;
            var transform3D = (ITransform3D)TestPoint;
            transform3D.Move3D(0, 0, zOffset);
            TestPoint = (IPoint)transform3D;
            var newTestPoint = (IPoint)transform3D;
            pointCollection.UpdatePoint(indextransformPoint, TestPoint);
            MessageBox.Show(pointCollection.get_Point(indextransformPoint).Z.ToString());
            m_application.RefreshWindow();
            return pointCollection as IPolyline;
        }

I am so stupid in this SDK, sorry...

-------------------Added-------------------
Top code example updated. This is "new" version:

            IPolyline pl = null;
            IFeature feature;
            pl = (IPolyline)feature.Shape;
            feature.Shape = ModifyVertexOfAPolyline((IGeometryCollection)pl);
            feature.Store();

After execute this, all selected shapes rewrited to this: [ATTACH=CONFIG]15185[/ATTACH]
In identify window: [ATTACH=CONFIG]15186[/ATTACH]

901.jpg

900.jpg

RichWawrzonek

In your geometry bridge code you create a new testBridge object but don't add any geometries to it. So when you try to use ReplacePoints method there are no points to replace.

RustamTimerbaev

Hmm, doesn't work too. And another question, how to use IGeometryBridge? Please see code in previous post. It's correct?
I think, i may use this method.

RichWawrzonek

I would have put the zaware code before you set the z value of TestPoint

RustamTimerbaev

            int hitPartIndex = 0;
            hitPartIndex = gcPolyline.GeometryCount;
            hitPartIndex--;
              IGeometry geometry = gcPolyline.get_Geometry(hitPartIndex);
           
              var pointCollection = (IPointCollection4)geometry;

              int indextransformPoint = 1;
              indextransformPoint = pointCollection.PointCount;
              MessageBox.Show("indexTransformPoint = " + indextransformPoint.ToString() + 
                  "\nhitPartIndex = " + hitPartIndex.ToString());

              indextransformPoint--;

              Double zOffset = Convert.ToDouble( textBox3.Text);

              MessageBox.Show("zOffset = " + textBox3.Text);

              if (zOffset == 0 )
                  return gcPolyline as IPolyline;
            IPoint TestPoint;
            TestPoint = pointCollection.get_Point(indextransformPoint);
            TestPoint.X = pointCollection.get_Point(indextransformPoint).X;
            TestPoint.Y = pointCollection.get_Point(indextransformPoint).Y;
            TestPoint.Z = pointCollection.get_Point(indextransformPoint).Z + zOffset;

            
            var transform3D = (ITransform3D)TestPoint;
            transform3D.Move3D(0, 0, zOffset);

            var newTestPoint = (IPoint)transform3D;

            IZAware zAware = newTestPoint as IZAware;
            zAware.ZAware = true;

            pointCollection.UpdatePoint(indextransformPoint, newTestPoint);

            MessageBox.Show(pointCollection.get_Point(indextransformPoint).Z.ToString());

            m_application.RefreshWindow();

Doesn't work 😞

And, for example, i use IGeometryBridge:

IPoint[] array = new IPoint[1];

            array[0] = newTestPoint;

            IGeometryBridge testBridge = new GeometryEnvironmentClass();
            //MessageBox.Show("until testBridge");
            try
            {
                testBridge.ReplacePoints(pointCollection, 0, 1, array);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            //MessageBox.Show("after testBridge");

But here i see only Exception errors...

RichWawrzonek

You need to cast your TestPoint to the IZAware interface and set the ZAware property = true

Something like this should work:

IZAware zAware = TestPoint as IZAware;
zAware.ZAware = true;

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