From 15740faf9fe9fe4be08965098bbf2947e096aeeb Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 14 Aug 2019 22:50:43 +0800
Subject: +Unity Runtime code
---
Runtime/Utilities/LODUtility.cpp | 86 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 86 insertions(+)
create mode 100644 Runtime/Utilities/LODUtility.cpp
(limited to 'Runtime/Utilities/LODUtility.cpp')
diff --git a/Runtime/Utilities/LODUtility.cpp b/Runtime/Utilities/LODUtility.cpp
new file mode 100644
index 0000000..d2268fb
--- /dev/null
+++ b/Runtime/Utilities/LODUtility.cpp
@@ -0,0 +1,86 @@
+#include "UnityPrefix.h"
+
+#include "LODUtility.h"
+#include "Runtime/Filters/Renderer.h"
+#include "Runtime/Math/Vector3.h"
+#include "Runtime/Camera/LODGroup.h"
+#include "Runtime/Filters/AABBUtility.h"
+#include "Runtime/Camera/LODGroupManager.h"
+
+void CalculateLODGroupBoundingBox ( LODGroup& group )
+{
+ Matrix4x4f worldToLocal = group.GetComponent(Transform).GetWorldToLocalMatrix();
+
+ MinMaxAABB minmax;
+ minmax.Init();
+ for (int i=0;i<group.GetLODCount();i++)
+ {
+ for (int r=0;r<group.GetLOD(i).renderers.size();r++)
+ {
+ Renderer* renderer = group.GetLOD(i).renderers[r].renderer;
+ if (renderer && renderer->GetGameObjectPtr())
+ {
+ AABB localBounds;
+ if (CalculateLocalAABB (renderer->GetGameObject(), &localBounds))
+ {
+ Matrix4x4f relativeTransform;
+ Matrix4x4f rendererLocalToWorld = renderer->GetTransform().GetLocalToWorldMatrix();
+
+ MultiplyMatrices4x4(&worldToLocal, &rendererLocalToWorld, &relativeTransform);
+
+ AABB lodGroupRelativeBoundds;
+ TransformAABBSlow (localBounds, relativeTransform, lodGroupRelativeBoundds);
+
+ minmax.Encapsulate(lodGroupRelativeBoundds);
+ }
+ }
+ }
+ }
+
+ float size;
+ if (minmax.IsValid())
+ {
+ group.SetLocalReferencePoint (minmax.GetCenter());
+ Vector3f extent = minmax.GetExtent() * 2.0F;
+ size = std::max(std::max(extent.x, extent.y), extent.z);
+ }
+ else
+ {
+ group.SetLocalReferencePoint (Vector3f (0, 0, 0));
+ size = 1;
+ }
+
+ float scale = group.GetWorldSpaceScale();
+ if (scale > 0.0001F)
+ size /= scale;
+
+ group.SetSize (size);
+}
+
+void ForceLODLevel (const LODGroup& group, int index)
+{
+ int LODCount = group.GetLODCount();
+ if (index >= LODCount)
+ if (index >= LODCount)
+ {
+ WarningString("SetLODs: Attempting to force a LOD outside the number available LODs");
+ return;
+ }
+
+ // mask of 0 = no force
+ // now create a mask for the rest
+ UInt32 lodMask = 0;
+ if (index >= 0)
+ lodMask = 1 << index;
+
+ LODGroupManager& m = GetLODGroupManager();
+ int lodGroupIndex = group.GetLODGroup();
+ if (lodGroupIndex < 0)
+ {
+ WarningString("SetLODs: Attempting to force a LOD outside the number available LODs");
+ return;
+ }
+
+ m.SetForceLODMask (lodGroupIndex, lodMask);
+}
+
--
cgit v1.1-26-g67d0