Determining an Element's Envelope Without Adding to GroupElement/Layout

TheBobScript — Thu, 06 Jan 2022 23:23:09 GMT

I need to determine the width of a graphic (typically CIMTextGraphic) so that I can place subsequent graphics as they relate to the location of the preceding graphic.

I can do this by creating a (throw-away/temporary) GroupElement and then retrieving the envelope like so:

Coordinate2D pnt = new Coordinate2D(xCanvas, yCanvas); GroupElement dummyGE; GroupElement groupElement; List<CIMGraphic> newElements = new List<CIMGraphic>(); await QueuedTask.Run(() => { dummyGE = LayoutElementFactory.Instance.CreateGroupElement(myLayout)); //create foreign text CIMTextGraphic tg = new CIMTextGraphic { Symbol = myTextSymbol.MakeSymbolReference(), Text = "Hallo Venn!", Shape = pnt.ToMapPoint() }; CIMGraphicElement graphic = new CIMGraphicElement() { Graphic = tg }; LayoutElementFactory.Instance.CreateElement(dummyGE, graphic); Element tmpElem = dummyGE.Elements[dummyGE.Elements.Count - 1]; Envelope tmpEnv = tmpElem.GetBounds(); pnt = new Coordinate2D(xCanvas + (tmpEnv.Width + 1), yCanvas); tg.Shape = pnt.ToMapPoint(); newElements.Add(tg); //create english text tg = new CIMTextGraphic { Symbol = myTextSymbol.MakeSymbolReference(), Text = "Hello Friend!", Shape = pnt.ToMapPoint() }; graphic = new CIMGraphicElement() { Graphic = tg }; LayoutElementFactory.Instance.CreateElement(dummyGE, graphic); tmpElem = dummyGE.Elements[dummyGE.Elements.Count - 1]; tmpEnv = tmpElem.GetBounds(); pnt = new Coordinate2D(xCanvas + (tmpEnv.Width + 1), yCanvas); tg.Shape = pnt.ToMapPoint(); newElements.Add(tg); myLayout.DeleteElement(dummyGE); groupElement = LayoutElementFactory.Instance.CreateGroupElement(myLayout); LayoutElementFactory.Instance.CreateGraphicElements(groupElement, newElements, null); });

Using this method is detrimental to performance. If I am iteratively using the above code it can take nearly a minute to add ~100 elements.

If I don't need to determine the location based on preceding elements I can avoid the creation of the 'dummy' element; I just add the new element to the CIMGraphic list and once I have all elements added, use a single call (LayoutElementFactory.Instance.CreateGraphicElements) to add to a GroupElement/Layout. That works great, but it doesn't help me when trying to create elements as the relate to other new elements.

Anyone out there have a method to determine the extent of an element without adding it the layout?

topic Determining an Element's Envelope Without Adding to GroupElement/Layout in ArcGIS Pro SDK Questions

Determining an Element's Envelope Without Adding to GroupElement/Layout