objtimeshift

docs/FAQ.md

@@ -173,6 +173,14 @@ sudo strip --remove-section=.note.ABI-tag /usr/lib64/libQt5Core.so.5
 
 Reference: https://askubuntu.com/questions/1034313/ubuntu-18-4-libqt5core-so-5-cannot-open-shared-object-file-no-such-file-or-dir
 
+### Q
+
+Any error around TBB.
+
+### A
+
+Consider uninstall OneAPI (`/opt/intel/oneapi`), OpenVDB requires the old version of TBB, not the stupid OneTBB.
+
 ## CUDA problem
 
 ### Q

zeno/src/nodes/neo/ObjTimeShift.cpp

@@ -0,0 +1,51 @@
+#include <zeno/zeno.h>
+#include <zeno/types/ListObject.h>
+
+namespace zeno {
+namespace {
+
+struct ObjTimeShift : INode {
+    std::vector<std::shared_ptr<IObject>> m_objseq;
+
+    virtual void apply() override {
+        auto obj = get_input<IObject>("obj");
+        auto offset = get_input2<int>("offset");
+        std::shared_ptr<IObject> prevObj;
+        auto &objseq = has_input("customList") ?
+            get_input<ListObject>("customList")->arr : m_objseq;
+        if (offset < 0) {
+            objseq.resize(1);
+            prevObj = std::move(objseq[0]);
+            objseq[0] = obj->clone();
+        } else {
+            objseq.push_back(obj->clone());
+            if (offset < objseq.size())
+                prevObj = objseq[objseq.size() - 1 - offset];
+            else
+                prevObj = objseq[0];
+        }
+        set_output("obj", std::move(obj));
+        set_output("prevObj", std::move(prevObj));
+    }
+};
+
+ZENDEFNODE(ObjTimeShift, {
+    {
+    {"IObject", "obj"},
+    {"int", "offset", "1"},
+    {"ListObject", "customList"},
+    },
+    {
+    {"IObject", "obj"},
+    {"IObject", "prevObj"},
+    },
+    {
+    },
+    {"primitive"},
+});
+
+//struct ObjCacheToDisk : INode {
+//};
+
+}
+}