WIP: new anim graph editor can show loaded graph.

src/AnimGraph/AnimGraphEditor.cc

@@ -14,6 +14,7 @@
 #include "misc/cpp/imgui_stdlib.h"
 
 static AnimGraphResource sGraphGresource = AnimGraphResource();
+static bool sGraphLoadedThisFrame = false;
 
 ImNodesPinShape sGetSocketShapeFromSocketType(const SocketType& socket_type) {
   switch (socket_type) {
@@ -36,6 +37,14 @@ ImNodesPinShape sGetSocketShapeFromSocketType(const SocketType& socket_type) {
   return ImNodesPinShape_Quad;
 }
 
+int GetNodeInputSocketId(int node_index, int input_socket_index) {
+  return node_index * 1000 + input_socket_index;
+}
+
+int GetNodeOutputSocketId(int node_index, int output_socket_index) {
+  return node_index * 1000 + 100 + output_socket_index;
+}
+
 void NodeSocketEditor(Socket& socket) {
   int mode_current = static_cast<int>(socket.m_type);
   ImGui::InputText("Name", &socket.m_name);
@@ -181,9 +190,7 @@ void AnimGraphEditorRenderSidebar(
           100.f);
     } else if (property.m_type == SocketType::SocketTypeBool) {
       bool flag_value = property.GetValue<bool>();
-      if (ImGui::Checkbox(
+      if (ImGui::Checkbox(property.m_name.c_str(), &flag_value)) {
-          property.m_name.c_str(),
-          &flag_value)) {
         property.SetValue(flag_value);
       }
     } else if (property.m_type == SocketType::SocketTypeString) {
@@ -254,6 +261,7 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
   }
   if (ImGui::Button("Load")) {
     sGraphGresource.loadFromFile("editor_graph.json");
+    sGraphLoadedThisFrame = true;
 
     //    for (size_t i = 0, n = sGraphGresource.m_nodes.size(); i < n; i++) {
     //      const AnimNodeResource& node_resource = sGraphGresource.m_nodes[i];
@@ -283,6 +291,7 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
   ax::NodeEditor::SetCurrentEditor(context);
   ax::NodeEditor::Begin("Graph Editor");
 
+#if 1
   for (size_t node_id = 0, n = sGraphGresource.m_nodes.size(); node_id < n;
        node_id++) {
     AnimNodeResource& node_resource = sGraphGresource.m_nodes[node_id];
@@ -291,7 +300,11 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
       // continue;
     }
 
-
+    if (sGraphLoadedThisFrame) {
+      ax::NodeEditor::SetNodePosition(
+          node_id,
+          ImVec2(node_resource.m_position[0], node_resource.m_position[1]));
+    }
     ax::NodeEditor::BeginNode(node_id);
     ImGui::Text("%s", node_resource.m_type_name.c_str());
 
@@ -300,19 +313,21 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
         node_resource.m_socket_accessor->m_inputs;
     for (size_t j = 0, ni = node_inputs.size(); j < ni; j++) {
       Socket& socket = node_inputs[j];
-      int pin_id = static_cast<int>(node_id) + j * 1000;
+      ax::NodeEditor::BeginPin(
-      ax::NodeEditor::BeginPin(pin_id, ax::NodeEditor::PinKind::Input);
+          GetNodeInputSocketId(static_cast<int>(node_id), static_cast<int>(j)),
+          ax::NodeEditor::PinKind::Input);
       ImGui::Text("%s", socket.m_name.c_str());
       ax::NodeEditor::EndPin();
     }
 
     // Outputs
-    const std::vector<Socket>& node_outputs =
+    std::vector<Socket>& node_outputs =
         node_resource.m_socket_accessor->m_outputs;
     for (size_t j = 0, ni = node_outputs.size(); j < ni; j++) {
-      const Socket& socket = node_outputs[j];
+      Socket& socket = node_outputs[j];
-      int pin_id = static_cast<int>(node_id) + j * 1000 * 1000;
+      ax::NodeEditor::BeginPin(
-      ax::NodeEditor::BeginPin(pin_id, ax::NodeEditor::PinKind::Output);
+          GetNodeOutputSocketId(static_cast<int>(node_id), static_cast<int>(j)),
+          ax::NodeEditor::PinKind::Output);
       ImGui::Text("%s", socket.m_name.c_str());
       ax::NodeEditor::EndPin();
     }
@@ -320,37 +335,28 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
     ax::NodeEditor::EndNode();
   }
 
-#if 0
+  int link_id = 0;
-  int unique_id = 1;
+  for (size_t connection_id = 0, n = sGraphGresource.m_connections.size(); connection_id < n;
-  ax::NodeEditor::BeginNode(unique_id++);
+       connection_id++) {
+    const AnimGraphConnectionResource& connection_resource = sGraphGresource.m_connections[connection_id];
 
-  // Node A
+    const AnimNodeResource& source_node_resource = sGraphGresource.m_nodes[connection_resource.source_node_index];
-  ImGui::Text("Node A");
+    int source_socket_index = source_node_resource.m_socket_accessor->GetOutputIndex(connection_resource.source_socket_name.c_str());
-  ax::NodeEditor::BeginPin(unique_id++, ax::NodeEditor::PinKind::Input);
-  ImGui::Text("In");
-  ax::NodeEditor::EndPin();
-  ImGui::SameLine();
-  ax::NodeEditor::BeginPin(unique_id++, ax::NodeEditor::PinKind::Output);
-  ImGui::Text("Out");
-  ax::NodeEditor::EndPin();
 
-  ax::NodeEditor::EndNode();
+    const AnimNodeResource& target_node_resource = sGraphGresource.m_nodes[connection_resource.target_node_index];
+    int target_socket_index = target_node_resource.m_socket_accessor->GetInputIndex(connection_resource.target_socket_name.c_str());
 
-  // Node B
+    int source_socket_id = GetNodeOutputSocketId(static_cast<int>(connection_resource.source_node_index), source_socket_index);
-  ax::NodeEditor::BeginNode(unique_id++);
+    int target_socket_id = GetNodeInputSocketId(static_cast<int>(connection_resource.target_node_index), target_socket_index);
+
+    ax::NodeEditor::Link(link_id++, source_socket_id, target_socket_id);
+  }
 
-  ImGui::Text("Node B");
-  ax::NodeEditor::BeginPin(unique_id++, ax::NodeEditor::PinKind::Input);
-  ImGui::Text("In");
-  ax::NodeEditor::EndPin();
-  ImGui::SameLine();
-  ax::NodeEditor::BeginPin(unique_id++, ax::NodeEditor::PinKind::Output);
-  ImGui::Text("Out");
-  ax::NodeEditor::EndPin();
 
-  ax::NodeEditor::EndNode();
 #endif
 
+
+#if 1
   // Create Connections
   if (ax::NodeEditor::BeginCreate()) {
     ax::NodeEditor::PinId input_pin_id, output_pin_id;
@@ -362,9 +368,12 @@ void AnimGraphEditorUpdate(ax::NodeEditor::EditorContext* context) {
     }
   }
   ax::NodeEditor::EndCreate();
+#endif
 
   ax::NodeEditor::End();
 
+  sGraphLoadedThisFrame = false;
+
   ax::NodeEditor::SetCurrentEditor(nullptr);
 }