/*****************************************************************
  glutText0.cpp
  by Dave Pape
  22 April 2003

*****************************************************************/
#include <stdlib.h>
#include <math.h>
#include <unistd.h>
#include <stdio.h>
#include <GL/glut.h>
#include <GL/gl.h>
#include <dms/dms.h>

using namespace dms;

void drawEverything(void);

void key(unsigned char k, int x, int y);
void specialkey(int k, int x, int y);
void idle(void);


PerspCamera camera;
Light light;

int main(int argc, char *argv[])
    {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(512,512);
    glutCreateWindow(argv[0]);
    
    glutDisplayFunc(drawEverything);
    glutKeyboardFunc(key);
    glutSpecialFunc(specialkey);
    glutIdleFunc(idle);
    
    camera.setPosition(0, 0, 10);
    light.setInfinitePosition(1, 1, 1);
    
    glutMainLoop();
    return 0;
    }


char * bitmapText0 = "Bitmap Text - TimesRoman 24";
char * bitmapText1 = "Bitmap Text - Helvetica 10";
char * strokeText0 = "Stroke Text - Roman";
char * strokeText1 = "Stroke Text - MonoRoman";

void drawEverything(void)
    {
    glClearColor(0.5, 0.7, 1.0, 0.0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glEnable(GL_DEPTH_TEST);
    
    camera.apply();
    light.apply();
    glEnable(GL_LIGHTING);
    glutSolidTeapot(1);
    glDisable(GL_LIGHTING);

    glColor4f(1, 0, 0, 1);

    glPushMatrix();
     glTranslatef(-1, -1.5, 0);
     glScalef(0.005, 0.005, 0.005);
     for (char *p=strokeText0; *p; p++)
        glutStrokeCharacter(GLUT_STROKE_ROMAN, *p);
    glPopMatrix();
    glPushMatrix();
     glTranslatef(-1, -3, 0);
     glScalef(0.005, 0.005, 0.005);
     for (char *p=strokeText1; *p; p++)
        glutStrokeCharacter(GLUT_STROKE_MONO_ROMAN, *p);
    glPopMatrix();

    glRasterPos3f(-1, 1, 0);
    for (char *p=bitmapText0; *p; p++)
        glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, *p);
    glRasterPos3f(-1, 2, 0);
    for (char *p=bitmapText1; *p; p++)
        glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, *p);

    glutSwapBuffers();

    checkGLError("end-of-frame");
    }


void key(unsigned char k, int x, int y)
    {
    if (k == 27)
        exit(0);
    }


void specialkey(int k, int x, int y)
    {
    if (k == GLUT_KEY_LEFT)
        camera.turn(3);
    else if (k == GLUT_KEY_RIGHT)
        camera.turn(-3);
    else if (k == GLUT_KEY_UP)
        camera.pitch(2);
    else if (k == GLUT_KEY_DOWN)
        camera.pitch(-2);
    else if (k == GLUT_KEY_HOME)
        camera.moveForward(0.25);
    else if (k == GLUT_KEY_END)
        camera.moveForward(-0.25);
    else if (k == GLUT_KEY_PAGE_UP)
        camera.zoom(-1);
    else if (k == GLUT_KEY_PAGE_DOWN)
        camera.zoom(1);
    }


void idle(void)
    {
    glutPostRedisplay();
    }