public static List <ElementGroup> GetElementGroups(ProBuilderMesh mesh, bool collectCoincident)
{
var groups = new List <ElementGroup>();
var selectMode = ProBuilderEditor.selectMode;
if (selectMode.ContainsFlag(SelectMode.Vertex | SelectMode.TextureVertex))
{
foreach (var list in GetVertexSelectionGroups(mesh, collectCoincident))
{
var pos = PHandleUtility.GetActiveElementPosition(mesh, list);
var rot = PHandleUtility.GetVertexRotation(mesh, HandleOrientation.ActiveElement, list);
groups.Add(new ElementGroup(list, pos, rot));
}
}
else if (selectMode.ContainsFlag(SelectMode.Edge | SelectMode.TextureEdge))
{
foreach (var list in GetEdgeSelectionGroups(mesh))
{
var pos = PHandleUtility.GetActiveElementPosition(mesh, list);
var rot = PHandleUtility.GetEdgeRotation(mesh, HandleOrientation.ActiveElement, list);
List <int> indices;
if (collectCoincident)
{
indices = new List <int>();
mesh.GetCoincidentVertices(list, indices);
}
else
{
indices = list.SelectMany(x => new int[] { x.a, x.b }).ToList();
}
groups.Add(new ElementGroup(indices, pos, rot));
}
}
else if (selectMode.ContainsFlag(SelectMode.Face | SelectMode.TextureFace))
{
foreach (var list in GetFaceSelectionGroups(mesh))
{
var pos = PHandleUtility.GetActiveElementPosition(mesh, list);
var rot = PHandleUtility.GetFaceRotation(mesh, HandleOrientation.ActiveElement, list);
List <int> indices;
if (collectCoincident)
{
indices = new List <int>();
mesh.GetCoincidentVertices(list, indices);
}
else
{
indices = list.SelectMany(x => x.distinctIndexesInternal).ToList();
}
groups.Add(new ElementGroup(indices, pos, rot));
}
}
return(groups);
}
static EdgeAndDistance GetNearestEdgeOnMesh(ProBuilderMesh mesh, Vector3 mousePosition)
{
Ray ray = UHandleUtility.GUIPointToWorldRay(mousePosition);
var res = new EdgeAndDistance()
{
edge = Edge.Empty,
distance = Mathf.Infinity
};
SimpleTuple <Face, Vector3> s_DualCullModeRaycastBackFace = new SimpleTuple <Face, Vector3>();
SimpleTuple <Face, Vector3> s_DualCullModeRaycastFrontFace = new SimpleTuple <Face, Vector3>();
// get the nearest hit face and point for both cull mode front and back, then prefer the result that is nearest the camera.
if (PHandleUtility.FaceRaycastBothCullModes(ray, mesh, ref s_DualCullModeRaycastBackFace, ref s_DualCullModeRaycastFrontFace))
{
Vector3[] v = mesh.positionsInternal;
if (s_DualCullModeRaycastBackFace.item1 != null)
{
foreach (var edge in s_DualCullModeRaycastBackFace.item1.edgesInternal)
{
float d = UHandleUtility.DistancePointLine(s_DualCullModeRaycastBackFace.item2, v[edge.a], v[edge.b]);
if (d < res.distance)
{
res.edge = edge;
res.distance = d;
}
}
}
if (s_DualCullModeRaycastFrontFace.item1 != null)
{
var a = mesh.transform.TransformPoint(s_DualCullModeRaycastBackFace.item2);
var b = mesh.transform.TransformPoint(s_DualCullModeRaycastFrontFace.item2);
var c = SceneView.lastActiveSceneView.camera.transform.position;
if (Vector3.Distance(c, b) < Vector3.Distance(c, a))
{
foreach (var edge in s_DualCullModeRaycastFrontFace.item1.edgesInternal)
{
float d = UHandleUtility.DistancePointLine(s_DualCullModeRaycastFrontFace.item2, v[edge.a], v[edge.b]);
if (d < res.distance)
{
res.edge = edge;
res.distance = d;
}
}
}
}
if (res.edge.IsValid())
{
res.distance = UHandleUtility.DistanceToLine(
mesh.transform.TransformPoint(v[res.edge.a]),
mesh.transform.TransformPoint(v[res.edge.b]));
}
}
return(res);
}
