#include "allocate/factory.h"
#include "code/return.h"
#include "draw/opengl_service.h"

opengl_service_t::opengl_service_t(
	opengl_service_t::configuration_t* configuration_p
) {
	configuration_m = configuration_p;
}

void_t<opengl_service_t::error_t> opengl_service_t::draw_quad(
) {
	glClearColor(1.0, 1.0, 1.0, 1.0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(-1., 1., -1., 1., 1., 20.);

	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	gluLookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.);

	glBegin(GL_QUADS);
	glColor3f(1., 0., 0.); glVertex3f(-.75, -.75, 0.);
	glColor3f(0., 1., 0.); glVertex3f( .75, -.75, 0.);
	glColor3f(0., 0., 1.); glVertex3f( .75,  .75, 0.);
	glColor3f(1., 1., 0.); glVertex3f(-.75,  .75, 0.);
	glEnd();
	void_t<opengl_service_t::error_t> void_l;
	void_l.error_m = opengl_service_t::error_t::none;
	return void_l;
}

void_t<opengl_service_t::error_t> opengl_service_t::enable_depth_test(
) {
	glEnable(
		GL_DEPTH_TEST
	);
	void_t<opengl_service_t::error_t> void_l;
	void_l.error_m = opengl_service_t::error_t::none;
	return void_l;
}

void_t<opengl_service_t::error_t> opengl_service_t::resize_viewport(
	int x,
	int y,
	int width,
	int height
) {
	void_t<opengl_service_t::error_t> void_l;
	void_l.error_m = opengl_service_t::error_t::none;
	glViewport(
		0,
		0,
		width,
		height
	);
	return void_l;
}

return_t<opengl_service_t::error_t, opengl_service_t*> opengl_service_factory_t::create(
	opengl_service_t::configuration_t* configuration_p
) {
	opengl_service_t* opengl_service_l = new opengl_service_t(
		configuration_p
	);
	return_t<opengl_service_t::error_t, opengl_service_t*> return_l;
	return_l.error_m = opengl_service_t::error_t::none;
	return_l.value_m = opengl_service_l;
	return return_l;
}

void_t<opengl_service_t::error_t> opengl_service_factory_t::dispose(
	opengl_service_t* opengl_service_p
) {
	delete opengl_service_p;
	void_t<opengl_service_t::error_t> void_l;
	void_l.error_m = opengl_service_t::error_t::none;
	return void_l;
}