CIMMaplexRotationProperties Class
Modify label Rotation - Point geometry
//Note: call within QueuedTask.Run()
//Get the layer's definition
var lyrDefn = featureLayer.GetDefinition() as CIMFeatureLayer;
//Get the label classes - we need the first one
var listLabelClasses = lyrDefn.LabelClasses.ToList();
var theLabelClass = listLabelClasses.FirstOrDefault();
//Modify label Rotation
CIMMaplexRotationProperties rotationProperties = new CIMMaplexRotationProperties
{
Enable = true, //Enable rotation
RotationField = "ELEVATION", //Field that is used to define rotation angle
AdditionalAngle = 15, //Additional rotation
RotationType = MaplexLabelRotationType.Arithmetic,
AlignmentType = MaplexRotationAlignmentType.Perpendicular,
AlignLabelToAngle = true
};
theLabelClass.MaplexLabelPlacementProperties.RotationProperties = rotationProperties;
lyrDefn.LabelClasses = listLabelClasses.ToArray(); //Set the labelClasses back
featureLayer.SetDefinition(lyrDefn); //set the layer's definition
System.Object
ArcGIS.Core.CIM.CIMObject
ArcGIS.Core.CIM.CIMMaplexRotationProperties
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.