Profiling.cpp

/* 
 * File:   Profiling.cpp
 * Author: gabriel
 * 
 * Created on May 18, 2011, 1:01 AM
 */

#include <GL/glew.h>

#include "externs.h"
#include "Profiling.h"
#include "ChangeMode.h"

Profiling::Profiling() {
    old_count = new_count = glutGet(GLUT_ELAPSED_TIME);
    frames = fps = 0;
	
	if (conf.rint("window:fullscreen") == 1) {
		start_coord_y = glutGameModeGet(GLUT_GAME_MODE_HEIGHT) - 50;
		coords = new Vertex(glutGameModeGet(GLUT_GAME_MODE_WIDTH) - 100, start_coord_y, 0);
	}
	else {
		start_coord_y = glutGet(GLUT_WINDOW_HEIGHT) - 50;
		coords = new Vertex(glutGet(GLUT_WINDOW_WIDTH) - 100, start_coord_y, 0);
	}
    for (int i = 0; i < TIME_SIZE; i++) {
        name[i] = NULL;
        start[i] = end[i] = 0;
    }
    printed = false;
}

void Profiling::update() {
	new_count = glutGet(GLUT_ELAPSED_TIME);
	frames++;
	if (new_count - old_count > 1000) {
		fps = frames * 1000 / (new_count - old_count);
		frames = 0;
		old_count = new_count;
	}
}

void Profiling::print(char* string) {
	ChangeMode::setOrthographicProjection();

	glPushMatrix();
	glLoadIdentity();

	int len, i;
    glColor3f(1.0f, 1.0f, 1.0f);
    glRasterPos2i(coords->x, coords->y);

	len = strlen(string);
	for (i = 0; i < len; i++) {
		glutBitmapCharacter(GLUT_BITMAP_HELVETICA_10, string[i]);
	}

	coords->y = coords->y - 15;

	glPopMatrix();

	ChangeMode::resetPerspectiveProjection();
}

void Profiling::reset_time() {
	coords->y = start_coord_y;
	//faz reset a todos excepto ao tempo de startup
//	coords->y = 0;
//	for (int i = 0; i < TIME_SIZE; i++)
//		if (i != TIME_STARTUP)
//			start[i] = end[i] = 0.0;
}

void Profiling::print_fps() {
	char string[15];
	sprintf(string, "FPS: %d", fps);
	print(string);
}

void Profiling::print_time() {
    char buff[50];
    for (int i = 0; i < TIME_SIZE && start[i] != 0.0; i++) {
        sprintf(buff, "%s: %d", name[i], end[i] - start[i]);
        print(buff);
    }
}

void Profiling::start_time(TIMES num, char* new_name) {
    if (InputManager::getOpState(PROFILING_MODE) == KEY_OFF) {
        start[num] = glutGet(GLUT_ELAPSED_TIME);
        if (name[num] == NULL) {
            name[num] = (char *) calloc(50, sizeof (char));
            strcpy(this->name[num], new_name);
        }
    }
}

void Profiling::end_time(TIMES num) {
    if (InputManager::getOpState(PROFILING_MODE) == KEY_OFF) {
        end[num] = glutGet(GLUT_ELAPSED_TIME);
    }
}

void Profiling::render() {
    print_fps();
    print_time();
}