static void SnapGridIntersection(UVSnapSettings snapSettings, SurfaceReference surfaceReference, Vector3 intersectionPoint, float preferenceFactor, ref Vector3 snappedPoint, ref float bestDist)
{
if ((snapSettings & UVSnapSettings.GeometryGrid) == UVSnapSettings.None)
{
return;
}
var grid = UnitySceneExtensions.Grid.defaultGrid;
var gridSnappedPoint = Snapping.SnapPoint(intersectionPoint, grid);
var worldPlane = surfaceReference.WorldPlane.Value;
var xAxis = grid.Right;
var yAxis = grid.Up;
var zAxis = grid.Forward;
var snapAxis = Axis.X | Axis.Y | Axis.Z;
if (Mathf.Abs(Vector3.Dot(xAxis, worldPlane.normal)) >= kAlignmentEpsilon)
{
snapAxis &= ~Axis.X;
}
if (Mathf.Abs(Vector3.Dot(yAxis, worldPlane.normal)) >= kAlignmentEpsilon)
{
snapAxis &= ~Axis.Y;
}
if (Mathf.Abs(Vector3.Dot(zAxis, worldPlane.normal)) >= kAlignmentEpsilon)
{
snapAxis &= ~Axis.Z;
}
if (Mathf.Abs(worldPlane.GetDistanceToPoint(gridSnappedPoint)) < kDistanceEpsilon)
{
bestDist = (gridSnappedPoint - intersectionPoint).magnitude * preferenceFactor;
snappedPoint = gridSnappedPoint;
}
else
{
float dist;
var ray = new Ray(gridSnappedPoint, xAxis);
if ((snapAxis & Axis.X) != Axis.None && worldPlane.UnsignedRaycast(ray, out dist))
{
var planePoint = ray.GetPoint(dist);
var abs_dist = (planePoint - intersectionPoint).magnitude * preferenceFactor;
if (abs_dist < bestDist)
{
bestDist = abs_dist;
snappedPoint = planePoint;
}
}
ray.direction = yAxis;
if ((snapAxis & Axis.Y) != Axis.None && worldPlane.UnsignedRaycast(ray, out dist))
{
var planePoint = ray.GetPoint(dist);
var abs_dist = (planePoint - intersectionPoint).magnitude * preferenceFactor;
if (abs_dist < bestDist)
{
bestDist = abs_dist;
snappedPoint = planePoint;
}
}
ray.direction = zAxis;
if ((snapAxis & Axis.Z) != Axis.None && worldPlane.UnsignedRaycast(ray, out dist))
{
var planePoint = ray.GetPoint(dist);
var abs_dist = (planePoint - intersectionPoint).magnitude * preferenceFactor;
if (abs_dist < bestDist)
{
bestDist = abs_dist;
snappedPoint = planePoint;
}
}
}
}