feat: show/hide Mesh Group Child Nodes Bounds

The border and origin will now be displayed by default. Users can switch between these options in the editor. If the meshgroup does not have Drawables, a pop-up window will remind the user.

source/creator/viewport/common/mesheditor/package.d

@@ -40,8 +40,11 @@ private:
     bool mirrorVert = false;
     VertexToolMode toolMode = VertexToolMode.Points;
 
+    bool showMeshgroupNodeChild = true;
+
 public:
     bool deformOnly;
+    bool hasPopupMeshgroupNoDrawables = false;
 
     this(bool deformOnly) {
         this.deformOnly = deformOnly;
@@ -326,5 +329,12 @@ public:
         return true;
     }
 
+    void setShowMeshgroupNodeChild(bool show) {
+        this.showMeshgroupNodeChild = show;
+    }
+
+    bool getShowMeshgroupNodeChild() {
+        return showMeshgroupNodeChild;
+    }
 }
 

source/creator/viewport/vertex/package.d

@@ -37,9 +37,41 @@ void incViewportVertexTools() {
     editor.viewportTools();
 }
 
+class MeshGroupNodeDrawer {
+    Node node;
+    this(Node node) {
+        this.node = node;
+    }
+
+    void draw() {
+        import inochi2d.core.dbg;
+
+        if (!editor.getShowMeshgroupNodeChild())
+            return;
+
+        node.drawBounds();
+
+        auto trans = node.transform.matrix();
+        inDbgSetBuffer([vec3(0, 0, 0)], [0]);
+        inDbgPointsSize(10);
+        inDbgDrawPoints(vec4(0, 0, 0, 1), trans);
+        inDbgPointsSize(6);
+        inDbgDrawPoints(vec4(0.5, 0.8, 0.5, 1), trans);
+    }
+}
+
 void incViewportVertexOptions() {
     igPushStyleVar(ImGuiStyleVar.ItemSpacing, ImVec2(0, 0));
     igPushStyleVar(ImGuiStyleVar.WindowPadding, ImVec2(4, 4));
+        igBeginGroup();
+            if (incButtonColored("\ue3eb##mesh-group-view-node", ImVec2(0, 0), editor.getShowMeshgroupNodeChild() ? ImVec4.init : ImVec4(0.6, 0.6, 0.6, 1))) {
+                editor.setShowMeshgroupNodeChild(!editor.getShowMeshgroupNodeChild());
+            }
+            incTooltip(_("Show Mesh Group Child Nodes Bounds"));
+        igEndGroup();
+
+        igSameLine(0, 4);
+
         igBeginGroup();
             if (igButton("")) {
                 foreach (d; incSelectedNodes) {
@@ -206,6 +238,7 @@ void incViewportVertexDraw(Camera camera) {
                 mat4 transform = mgroup.transform.matrix.inverse;
                 mgroup.setOneTimeTransform(&transform);
                 Node[] subParts;
+                Node[] subNodes;
                 void findSubDrawable(Node n) {
                     if (auto m = cast(MeshGroup)n) {
                         foreach (child; n.children)
@@ -218,6 +251,8 @@ void incViewportVertexDraw(Camera camera) {
                         subParts ~= d;
                         foreach (child; n.children)
                             findSubDrawable(child);
+                    } else {
+                        subNodes ~= n;
                     }
                 }
                 findSubDrawable(mgroup);
@@ -228,9 +263,26 @@ void incViewportVertexDraw(Camera camera) {
                     a.zSort, 
                     b.zSort) > 0, SwapStrategy.stable)(subParts);
 
+                foreach (part; subNodes) {
+                    auto nd = new MeshGroupNodeDrawer(part);
+                    nd.draw();
+                }
+
                 foreach (part; subParts) {
                     part.drawOne();
                 }
+
+                if (subParts.length == 0 && !editor.hasPopupMeshgroupNoDrawables) {
+                    import creator.widgets.dialog;
+                    editor.hasPopupMeshgroupNoDrawables = true;
+                    incDialog(
+                        "NO_DRAWABLES",
+                        __("No Drawables"),
+                        _("This meshgroup has no drawables to deform. To deform, replace the child with a meshgroup or other type."),
+                        DialogLevel.Info, DialogButtons.OK
+                    );
+                }
+
                 mgroup.setOneTimeTransform(null);
             }
         }