Initial graph evaluations, added Float to Vec3 Node, minor editor tweaks.

src/AnimGraph/AnimGraphNodes.h

@@ -240,6 +240,37 @@ struct NodeSocketAccessor<MathAddNode> : public NodeSocketAccessorBase {
 };
 
 
+//
+// MathFloatToVec3Node
+//
+struct MathFloatToVec3Node : public AnimNode {
+  float* i_input0 = nullptr;
+  float* i_input1 = nullptr;
+  float* i_input2 = nullptr;
+  Vec3 o_output = {0.f, 0.f, 0.f};
+
+  void Evaluate() override {
+    assert (i_input0 != nullptr);
+    assert (i_input1 != nullptr);
+    assert (i_input2 != nullptr);
+
+    o_output[0] = *i_input0;
+    o_output[1] = *i_input1;
+    o_output[2] = *i_input2;
+  }
+};
+
+template <>
+struct NodeSocketAccessor<MathFloatToVec3Node> : public NodeSocketAccessorBase {
+  NodeSocketAccessor(AnimNode* node_) {
+    MathFloatToVec3Node* node = dynamic_cast<MathFloatToVec3Node*>(node_);
+    RegisterInput("Input0", &node->i_input0);
+    RegisterInput("Input1", &node->i_input1);
+    RegisterInput("Input2", &node->i_input2);
+    RegisterOutput("Output", &node->o_output);
+  }
+};
+
 static inline AnimNode* AnimNodeFactory(const std::string& name) {
   AnimNode* result;
   if (name == "Blend2") {
@@ -250,6 +281,10 @@ static inline AnimNode* AnimNodeFactory(const std::string& name) {
     result = new AnimSamplerNode;
   } else if (name == "BlendTree") {
     result = new BlendTreeNode;
+  } else if (name == "MathAddNode") {
+    result = new MathAddNode;
+  } else if (name == "MathFloatToVec3Node") {
+    result = new MathFloatToVec3Node;
   }
 
   if (result != nullptr) {
@@ -272,6 +307,10 @@ static inline NodeSocketAccessorBase* AnimNodeAccessorFactory(
     return new NodeSocketAccessor<AnimSamplerNode>(node);
   } else if (node_type_name == "BlendTree") {
     return new NodeSocketAccessor<BlendTreeNode>(node);
+  } else if (node_type_name == "MathAddNode") {
+    return new NodeSocketAccessor<MathAddNode>(node);
+  } else if (node_type_name == "MathFloatToVec3Node") {
+    return new NodeSocketAccessor<MathFloatToVec3Node>(node);
   } else {
     std::cerr << "Invalid node type name " << node_type_name << "."
               << std::endl;