Unified handling of nodes in editor.

src/AnimGraphEditor.cc

@@ -101,93 +101,20 @@ void AnimGraphEditorUpdate() {
     ImGui::PopStyleVar(ImGuiStyleVar_WindowPadding);
   }
 
-  // Graph Output and Inputs
+  for (size_t i = 0, n = graph_resource.m_nodes.size(); i < n; i++) {
-  if (graph_resource.m_nodes.size() > 0) {
-    // Graph Output
-    AnimNodeResource& graph_output_node = graph_resource.getGraphOutputNode();
-    ImNodes::BeginNode(0);
-
-    // Header
-    ImNodes::BeginNodeTitleBar();
-    ImGui::TextUnformatted("Graph Output");
-    ImNodes::EndNodeTitleBar();
-
-    // Graph Outputs = Graph Node inputs
-    const std::vector<Socket>& graph_outputs =
-        graph_output_node.m_socket_accessor->m_inputs;
-    for (size_t j = 0, ni = graph_outputs.size(); j < ni; j++) {
-      const Socket& socket = graph_outputs[j];
-      ImNodes::BeginInputAttribute(
-          GenerateInputAttributeId(0, j),
-          sGetSocketShapeFromSocketType(socket.m_type),
-          ImColor(255, 255, 255, 255));
-      ImGui::Text(socket.m_name.c_str());
-      ImNodes::PushAttributeFlag(ImNodesAttributeFlags_EnableLinkDetachWithDragClick);
-      ImNodes::EndInputAttribute();
-    }
-
-    if (ImGui::Button("+Output")) {
-      static float bla = 0.f;
-      std::string socket_name = "Output";
-      socket_name +=
-          std::to_string(graph_output_node.m_socket_accessor->m_inputs.size());
-      graph_output_node.m_socket_accessor->RegisterInput<float>(
-          socket_name,
-          nullptr);
-    }
-
-    ImVec2 node_pos = ImNodes::GetNodeGridSpacePos(0);
-    graph_output_node.m_position[0] = node_pos[0];
-    graph_output_node.m_position[1] = node_pos[1];
-    ImNodes::EndNode();
-
-    // Graph Input
-    AnimNodeResource& graph_input_node = graph_resource.getGraphInputNode();
-    ImNodes::BeginNode(1);
-
-    // Header
-    ImNodes::BeginNodeTitleBar();
-    ImGui::TextUnformatted("Graph Input");
-    ImNodes::EndNodeTitleBar();
-
-    // Graph Input = Graph Node outputs
-    const std::vector<Socket>& graph_inputs =
-        graph_input_node.m_socket_accessor->m_outputs;
-    for (size_t j = 0, ni = graph_inputs.size(); j < ni; j++) {
-      const Socket& socket = graph_inputs[j];
-      ImNodes::BeginOutputAttribute(
-          GenerateOutputAttributeId(1, j),
-          sGetSocketShapeFromSocketType(socket.m_type),
-          ImColor(255, 255, 255, 255));
-      ImGui::Text(socket.m_name.c_str());
-      ImNodes::PushAttributeFlag(ImNodesAttributeFlags_EnableLinkDetachWithDragClick);
-      ImNodes::EndInputAttribute();
-    }
-
-    if (ImGui::Button("+Input")) {
-      static float bla = 0.f;
-      std::string socket_name = "Input";
-      socket_name +=
-          std::to_string(graph_input_node.m_socket_accessor->m_outputs.size());
-      graph_input_node.m_socket_accessor->RegisterOutput<float>(
-          socket_name,
-          nullptr);
-    }
-
-    node_pos = ImNodes::GetNodeGridSpacePos(1);
-    graph_input_node.m_position[0] = node_pos[0];
-    graph_input_node.m_position[1] = node_pos[1];
-    ImNodes::EndNode();
-  }
-
-  for (size_t i = 2, n = graph_resource.m_nodes.size(); i < n; i++) {
     AnimNodeResource& node_resource = graph_resource.m_nodes[i];
 
     ImNodes::BeginNode(i);
 
     // Header
     ImNodes::BeginNodeTitleBar();
-    ImGui::TextUnformatted(node_resource.m_type_name.c_str());
+    if (i == 0) {
+      ImGui::TextUnformatted("Graph Outputs");
+    } else if (i == 1) {
+      ImGui::TextUnformatted("Graph Inputs");
+    } else {
+      ImGui::TextUnformatted(node_resource.m_type_name.c_str());
+    }
     ImNodes::EndNodeTitleBar();
 
     // Inputs
@@ -219,6 +146,33 @@ void AnimGraphEditorUpdate() {
       ImNodes::EndInputAttribute();
     }
 
+    // Graph output node
+    if (i == 0) {
+      if (ImGui::Button("+Output")) {
+        AnimNodeResource& graph_output_node = graph_resource.getGraphOutputNode();
+
+        static float bla = 0.f;
+        std::string socket_name = "Output";
+        socket_name +=
+            std::to_string(graph_output_node.m_socket_accessor->m_inputs.size());
+        graph_output_node.m_socket_accessor->RegisterInput<float>(
+            socket_name,
+            nullptr);
+      }
+    } else if (i == 1) {
+      if (ImGui::Button("+Input")) {
+        AnimNodeResource& graph_input_node = graph_resource.getGraphInputNode();
+
+        static float bla = 0.f;
+        std::string socket_name = "Input";
+        socket_name +=
+            std::to_string(graph_input_node.m_socket_accessor->m_outputs.size());
+        graph_input_node.m_socket_accessor->RegisterOutput<float>(
+            socket_name,
+            nullptr);
+      }
+    }
+
     // Save state in node resource
     ImVec2 node_pos = ImNodes::GetNodeGridSpacePos(i);
     node_resource.m_position[0] = node_pos[0];