void OnDrawGizmos()

in unity/Assets/PostProcessingV2/Runtime/PostProcessVolume.cs [156:223]

• 44 lines of code
• 9 McCabe index (conditional complexity)

        void OnDrawGizmos()
        {
            var colliders = m_TempColliders;
            GetComponents(colliders);

            if (isGlobal || colliders == null)
                return;
            
#if UNITY_EDITOR
            // Can't access the UnityEditor.Rendering.PostProcessing namespace from here, so
            // we'll get the preferred color manually
            unchecked
            {
                int value = UnityEditor.EditorPrefs.GetInt("PostProcessing.Volume.GizmoColor", (int)0x8033cc1a);
                Gizmos.color = ColorUtilities.ToRGBA((uint)value);
            }
#endif

            var scale = transform.localScale;
            var invScale = new Vector3(1f / scale.x, 1f / scale.y, 1f / scale.z);
            Gizmos.matrix = Matrix4x4.TRS(transform.position, transform.rotation, scale);

            // Draw a separate gizmo for each collider
            foreach (var collider in colliders)
            {
                if (!collider.enabled)
                    continue;

                // We'll just use scaling as an approximation for volume skin. It's far from being
                // correct (and is completely wrong in some cases). Ultimately we'd use a distance
                // field or at least a tesselate + push modifier on the collider's mesh to get a
                // better approximation, but the current Gizmo system is a bit limited and because
                // everything is dynamic in Unity and can be changed at anytime, it's hard to keep
                // track of changes in an elegant way (which we'd need to implement a nice cache
                // system for generated volume meshes).
                var type = collider.GetType();

                if (type == typeof(BoxCollider))
                {
                    var c = (BoxCollider)collider;
                    Gizmos.DrawCube(c.center, c.size);
                    Gizmos.DrawWireCube(c.center, c.size + invScale * blendDistance * 4f);
                }
                else if (type == typeof(SphereCollider))
                {
                    var c = (SphereCollider)collider;
                    Gizmos.DrawSphere(c.center, c.radius);
                    Gizmos.DrawWireSphere(c.center, c.radius + invScale.x * blendDistance * 2f);
                }
                else if (type == typeof(MeshCollider))
                {
                    var c = (MeshCollider)collider;

                    // Only convex mesh colliders are allowed
                    if (!c.convex)
                        c.convex = true;

                    // Mesh pivot should be centered or this won't work
                    Gizmos.DrawMesh(c.sharedMesh);
                    Gizmos.DrawWireMesh(c.sharedMesh, Vector3.zero, Quaternion.identity, Vector3.one + invScale * blendDistance * 4f);
                }

                // Nothing for capsule (DrawCapsule isn't exposed in Gizmo), terrain, wheel and
                // other colliders...
            }

            colliders.Clear();
        }