![]() ![]() ![]() When using explicitFeatureSnap and this switch is on, features between multiple surfaces will be captured. Snap mesh onto the feature lines defined in eMesh file. Switch turning on the implicit feature specification. If not specified, feature snapping will be disabled. Number of relaxation iterations used for snapping onto the features. If the mesh does not conform the geometry and all the iterations are spend, user may try to increase the number of iterations. Number of relaxation iterations during the snapping. Multiplied by local cell-edge length specifies region along the surface within which the points are attracted by the surface Implicit algorithm behaves correctly on simple meshes without sharp corners and baffles. In such case snappyHexMesh does not read eMesh file and defines the sharp edges itself. Other option is to use implicit feature definition. Therefore more iterations are typically needed.įeatures may be specified explicitly using surfaceFeatureExtract utility which creates the eMesh file (located in constant/triSurface directory) with the feature line specification. While during the surface snapping the points are displaced in the normal direction to the surface, displacement to the edge is more complicated. The mesh is snapped to the features after the surface snapping step. Each step is reversible.Īfter the successful snapping or running out of iterations mesh is cleaned from unnecessary non-orthogonal planar faces. This process is repeated until the maximum number of iterations is reached. After mesh quality check the next attempt to move the point towards the geometry takes place. If the mesh quality is violated, vertices are moved back in a given fraction of the step (keyword errorReduction in the shQualit圜ontrols dictionary). Only those vertexes are attracted to the surface which are located in the region defined by the local edge length multiplied by the tolerance entry from the snapControls dictionary (by default set to 2). Then, in the morphing stage displace the vertexes towards the surface. The algorithm first smooth the mesh on the patches and in the volume. The parameters need to be set for snapping onto the surfaces and features separately. The good practice is to start with the default values and adjust them only after inspecting the mesh. The sequence ensures that the resulting mesh achieves a minimum quality, at the expense of full geometry conformation. If the adaptations invalidate the mesh quality criteria the step is undone and replayed using modified parameters. the surfaces and features, in an iterative process. Snapping involves projecting and morphing the mesh to, e.g. These controls are located in the snapControls sub-dictionary. I have included snips from before and after a tilt to better show my predicament.Īny potential solution or advice is greatly appreciated.The snapping phase attempts to adapt the castellated mesh to conform to the input geometry. Is there a way to tilt already extruded polyline data and keep the surface intersection points in place? Using Multipatch or another method in ArcGIS Pro. 2.8 to 2.8.2, and now it doesn't even allow a simple vertical shift in anchor position holding Ctrl but only allows me to snap to a vertex and there are none in the middle of the plane where my map surface is.) (Not that it would help if that did work, as the move anchor feature was seemingly altered during the update from v. I have tried using CTRL to move the rotation anchor, but even tilting from the surface level there is still a significant data offset. None of these lines are perfectly straight and tilting them through the surface offsets the data's location at the surface. ![]() 2.8.2) and found that converting them to multipatch allowed for the full xyz-axis rotation feature however, I also need the lines intersecting at the surface to remain anchored to preserve the data's map location on the surface. I am trying to tilt extruded polylines (walls essentially) using the Rotate Alignment Tool under Edit in ArcGIS Pro (v. ![]()
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