crown-engine/samples/android/triangle.cpp

#include "Crown.h"
#include "OS.h"
#include <jni.h>
#include <GLES/gl.h>

namespace crown
{

extern "C"
{
	JNIEXPORT void JNICALL Java_crown_android_CrownLib_frame(JNIEnv* env, jobject obj);
};

class MainScene : public AccelerometerListener
{
	
public:

	MainScene()
	{
		get_input_manager()->register_accelerometer_listener(this);
	}

	void accelerometer_changed(const AccelerometerEvent& event)
	{
		Log::I("Accelerometer changed");
	}

	void draw_triangle()
	{
		static GLfloat vertices[] = {	-1.0f, -1.0f, -2.0f,
										1.0f, -1.0f, -2.0f,
										0.0f, 1.0f, -2.0f};

		GetDevice()->GetRenderer()->SetMatrix(MT_MODEL, Mat4::IDENTITY);

		Mat4 projection;
		projection.build_projection_perspective_rh(90.0f, 800.0f/480.0f, 0.1f, 100.0f);
		GetDevice()->GetRenderer()->SetMatrix(MT_PROJECTION, projection);

		GetDevice()->GetRenderer()->SetClearColor(Color4::RED);

		glEnableClientState(GL_VERTEX_ARRAY);
		glVertexPointer(3, GL_FLOAT, 0, vertices);

		glDrawArrays(GL_TRIANGLES, 0, 9);

		glDisableClientState(GL_VERTEX_ARRAY);
	}

	void frame()
	{
		Device* mDevice = GetDevice();

		os::event_loop();

		get_input_manager()->event_loop();

		GetDevice()->GetRenderer()->_BeginFrame();
		draw_triangle();
		GetDevice()->GetRenderer()->_EndFrame();

		os::swap_buffers();
	}
};

MainScene* scene = new MainScene();



JNIEXPORT void JNICALL Java_crown_android_CrownLib_frame(JNIEnv* env, jobject obj)
{
	scene->frame();
}

} // namespace crown