Make m and d members of sui since they are not separable

sample/simulate.cc

@@ -143,7 +143,7 @@ void simulate(void) {
 // run event loop
 int main(int argc, const char** argv) {
   // initialize everything
-  init(&m, &d, &sui);
+  init(&sui, &m, &d);
 
   // request loadmodel if file given (otherwise drag-and-drop)
   if (argc>1) {
@@ -162,7 +162,7 @@ int main(int argc, const char** argv) {
     // load model (not on first pass, to show "loading" label)
     if (sui.loadrequest==1) {
       {
-        loadmodel(&m, &d, &sui);
+        loadmodel(&sui);
 
         // allocate ctrlnoise
         free(ctrlnoise);
@@ -177,13 +177,13 @@ int main(int argc, const char** argv) {
     glfwPollEvents();
 
     // prepare to render
-    prepare(m, d, &sui);
+    prepare(&sui);
 
     // end exclusive access (allow simulation thread to run)
     mtx.unlock();
 
     // render while simulation is running
-    render(m, d, &sui);
+    render(&sui);
   }
 
   // stop simulation thread