Added Global Inverse Matrix for SHRig

SHADE_Engine/src/Animation/SHAnimatorComponent.cpp

@@ -166,7 +166,7 @@ namespace SHADE
     const int BONE_MTX_IDX = rig->GetNodeIndex(node);
     if (BONE_MTX_IDX >= 0)
     {
-      boneMatrices[BONE_MTX_IDX] = boneMatrices[BONE_MTX_IDX] * transformMatrix * node->OffsetMatrix;
+      boneMatrices[BONE_MTX_IDX] = rig->GetGlobalInverseMatrix() * transformMatrix * node->OffsetMatrix;
     }
 
     // Apply pose to children

SHADE_Engine/src/Animation/SHRig.cpp

@@ -34,6 +34,10 @@ namespace SHADE
 
     // Do a recursive depth first traversal to populate the rig
     rootNode = recurseCreateNode(asset, asset.root);
+    if (rootNode)
+    {
+      globalInverseMatrix = rootNode->OffsetMatrix;
+    }
   }
 
   /*-----------------------------------------------------------------------------------*/
@@ -82,7 +86,7 @@ namespace SHADE
 
     // Fill the node with data
     const auto& NODE_DATA = asset.nodeDataCollection.at(sourceNode->idRef);
-    newNode->OffsetMatrix = NODE_DATA.transform;
+    newNode->OffsetMatrix = SHMatrix::Inverse(NODE_DATA.transform);
 
     // Populate maps
     if (!NODE_DATA.name.empty())

SHADE_Engine/src/Animation/SHRig.h

@@ -80,6 +80,7 @@ namespace SHADE
     /// </summary>
     /// <returns>Handle to the root node of the rig.</returns>
     Handle<SHRigNode> GetRootNode() const noexcept { return rootNode; }
+    const SHMatrix& GetGlobalInverseMatrix() const noexcept { return globalInverseMatrix; }
     /// <summary>
     /// Retrieves a node via name.
     /// </summary>
@@ -108,6 +109,7 @@ namespace SHADE
     std::unordered_map<std::string, Handle<SHRigNode>> nodesByName;
     std::vector<Handle<SHRigNode>> nodes;
     std::unordered_map<Handle<SHRigNode>, int> nodeIndexMap;
+    SHMatrix globalInverseMatrix;
     SHResourceLibrary<SHRigNode> nodeStore;
 
     /*---------------------------------------------------------------------------------*/