FBX -> Scene, part 2. Code changes, file renames (#1704)

* First pass FBX -> Scene File conversion. This is the simple pass, minimizing code changes and focused on comments. Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com> * Step 1 of part 2 of the FBX -> Scene rename Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com> * Renaming FbxSceneBuilder folder to SceneBuilder Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com> * Renamed files Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com> * More FBX -> Scene Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>
2021-07-01 15:46:55 -07:00
parent 328a0f09a5
commit 73522e90c9
83 changed files with 475 additions and 559 deletions
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
+ * 
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ *
+ */
+
+#include <SceneAPI/SceneBuilder/Importers/AssImpImporterUtilities.h>
+
+#include <AzCore/Debug/Trace.h>
+#include <AzCore/StringFunc/StringFunc.h>
+
+#include <assimp/scene.h>
+
+namespace AZ
+{
+    namespace SceneAPI
+    {
+        namespace SceneBuilder
+        {
+            bool IsSkinnedMesh(const aiNode& node, const aiScene& scene)
+            {
+                unsigned boneCount = 0;
+
+                for (unsigned mesh = 0; mesh < node.mNumMeshes; ++mesh)
+                {
+                    if (scene.mMeshes[node.mMeshes[mesh]]->HasBones())
+                    {
+                        ++boneCount;
+                    }
+                }
+
+                if (boneCount > 1 && boneCount != node.mNumMeshes)
+                {
+                    AZ_Error("AssImpImporterUtilities", false, "Node has %d meshes but only %d are skinned.  "
+                        "This is unexpected and may result in errors", node.mNumMeshes, boneCount);
+                }
+
+                return boneCount > 0;
+            }
+
+            bool IsPivotNode(const aiString& nodeName, size_t* pos)
+            {
+                AZStd::string_view name(nodeName.C_Str(), nodeName.length);
+
+                size_t myPos;
+
+                if (!pos)
+                {
+                    pos = &myPos;
+                }
+
+                *pos = AZ::StringFunc::Find(name, PivotNodeMarker);
+
+                return *pos != name.npos;
+            }
+
+            void SplitPivotNodeName(const aiString& nodeName, size_t pivotPos, AZStd::string_view& baseNodeName, AZStd::string_view& pivotType)
+            {
+                AZStd::string_view nodeNameView(nodeName.data, nodeName.length);
+                baseNodeName = AZStd::string_view(nodeNameView.substr(0, pivotPos));
+                pivotType = AZStd::string_view(nodeNameView.substr(pivotPos + sizeof PivotNodeMarker - 1));
+            }
+
+            aiMatrix4x4 GetConcatenatedLocalTransform(const aiNode* currentNode)
+            {
+                const aiNode* parent = currentNode->mParent;
+                aiMatrix4x4 combinedTransform = currentNode->mTransformation;
+
+                while (parent)
+                {
+                    size_t pos;
+
+                    if (IsPivotNode(parent->mName, &pos))
+                    {
+                        combinedTransform = parent->mTransformation * combinedTransform;
+                        parent = parent->mParent;
+                    }
+                    else
+                    {
+                        break;
+                    }
+                }
+
+                return combinedTransform;
+            }
+        } // namespace SceneBuilder
+    } // namespace SceneAPI
+} // namespace AZ