[mod_converter] Allow to process and print loaded .mod files from Viewer.exe from AIM2 SDK.

src/mod_converter/mod_converter.cpp

@@ -86,9 +86,10 @@ auto read_model(const path &fn)
     model m;
     if (fn.extension() == ".mod") // single block file from m2 sdk viewer
     {
-        block bl;
+        block bl = {};
+        bl.printable = true; // allow to output
         bl.h.name = to_printable_string(fn.stem());
-        bl.loadPayload(b);
+        bl.loadPayloadAndProcess(b);
         m.blocks.push_back(bl);
     }
     else

src/model/model.cpp

@@ -482,6 +482,12 @@ void block::load(const buffer &b)
     pmd = process_block(md);
 }
 
+void block::loadPayloadAndProcess(const buffer &b)
+{
+    loadPayload(b);
+    pmd = process_block(md);
+}
+
 void block::loadPayload(const buffer &data)
 {
     // anims
@@ -692,6 +698,9 @@ bool block::isEngineFx() const
 
 bool block::canPrint() const
 {
+    if (printable)
+        return true;
+
     // block all lods except 0
     if (!(h.all_lods == 15 || h.LODs.lod1))
         return false;

src/model/model.h

@@ -343,6 +343,7 @@ struct block
 
     void load(const buffer &b);
     void loadPayload(const buffer &b);
+    void loadPayloadAndProcess(const buffer &b);
     void linkFaces();
 
     std::string printMtl() const;
@@ -354,6 +355,7 @@ struct block
 
     //
     processed_model_data pmd;
+    bool printable = false;
 };
 
 struct model