Method RayCastWire

Source/Editor/Utilities/Utils.cs:756–783

Checks if given ray intersects with the oriented bounding wire box. The box. The ray. The result intersection distance. The view position used to scale the wires thickness depending on the wire distance from the view. True ray hits bounds, otherwise fa

(ref OrientedBoundingBox box, ref Ray ray, out Real distance, ref Vector3 viewPosition)

        /// <param name="viewPosition">The view position used to scale the wires thickness depending on the wire distance from the view.</param>
        /// <returns>True ray hits bounds, otherwise false.</returns>
        public static unsafe bool RayCastWire(ref OrientedBoundingBox box, ref Ray ray, out Real distance, ref Vector3 viewPosition)
        {
            var corners = stackalloc Vector3[8];
            box.GetCorners(corners);

            var minDistance = Vector3.DistanceSquared(ref viewPosition, ref corners[0]);
            for (int i = 1; i < 8; i++)
                minDistance = Mathf.Min(minDistance, Vector3.DistanceSquared(ref viewPosition, ref corners[i]));
            minDistance = Mathf.Sqrt(minDistance);
            var margin = Mathf.Clamp(minDistance / 80.0f, 0.1f, 100.0f);

            if (GetWriteBox(ref corners[0], ref corners[1], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[0], ref corners[3], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[0], ref corners[4], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[1], ref corners[2], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[1], ref corners[5], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[2], ref corners[3], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[2], ref corners[6], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[3], ref corners[7], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[4], ref corners[5], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[4], ref corners[7], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[5], ref corners[6], margin).Intersects(ref ray, out distance) ||
                GetWriteBox(ref corners[6], ref corners[7], margin).Intersects(ref ray, out distance))
                return true;

            distance = 0;
            return false;
        }

        /// <summary>
        /// Initializes the object fields and properties with their default values based on <see cref="System.ComponentModel.DefaultValueAttribute"/>.