Android rayshader sample.

samples/android_sample/jni/vm_glue.h

+#ifndef VM_GLUE_H
+#define VM_GLUE_H
+
+#include <android_native_app_glue.h>
+#include "bin/dartutils.h"
+#include "include/dart_api.h"
+#include "jni/graphics.h"
+
+class VMGlue {
+ public:
+  explicit VMGlue(Graphics* graphics);
+
+  int InitializeVM();
+  int StartMainIsolate();
+  int CallSetup();
+  int CallUpdate();
+  int OnMotionEvent(const char* function, int64_t when,
+                    float move_x, float move_y);
+  int OnKeyEvent(const char* function, int64_t when, int32_t flags,
+             int32_t key_code, int32_t meta_state, int32_t repeat);
+  void FinishMainIsolate();
+
+ private:
+  int Invoke(const char *function, int argc, Dart_Handle* args);
+
+  static int ErrorExit(const char* format, ...);
+  static Dart_Handle SetupRuntimeOptions(CommandLineOptions* options,
+                                         const char* executable_name,
+                                         const char* script_name);
+  static bool CreateIsolateAndSetupHelper(const char* script_uri,
+                                          const char* main,
+                                          void* data,
+                                          char** error);
+  static bool CreateIsolateAndSetup(const char* script_uri,
+                                    const char* main,
+                                    void* data, char** error);
+  static void ShutdownIsolate(void* callback_data);
+
+  Graphics* graphics_;
+  Dart_Isolate isolate_;
+  bool initialized_vm_;
+  bool initialized_script_;
+};
+
+#endif
+