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glutwidget.cpp
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glutwidget.cpp
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#include <GL/glew.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include "bitmap.h"
#include "glutwidget.hpp"
#include "shader_utils.hpp"
#include <iostream>
#include <cmath>
#include <ctime>
#include <algorithm>
#define PI 3.1415926
int glutWidget::m_pos_attribute_location;
unsigned int glutWidget::m_vertexbuffer;
unsigned int glutWidget::m_frame;
unsigned int glutWidget::m_program;
unsigned int glutWidget::m_vertexsh;
unsigned int glutWidget::m_fragmentsh;
int glutWidget::x0 = 0;
int glutWidget::y0 = 0;
int glutWidget::camera = 0;
float glutWidget::rotx = 0;
float glutWidget::roty = 0;
float glutWidget::rotz = 0;
float glutWidget::cposx = 0;
float glutWidget::cposy = 0;
float glutWidget::cposz = 3;
float glutWidget::zoom = 10;
float glutWidget::walk_speed = 0.1;
static int degree = 20;
static float t;
static unsigned int m_texture;
static unsigned int street_texture;
static unsigned int car_texture;
static unsigned int structure_texture;
static unsigned int skybox_texture;
static unsigned int wall_texture;
/*
Initializes GLUT context
*/
glutWidget::glutWidget(int argc, char** argv)
{
m_frame = 0;
glutInitWindowSize(glutWidget::m_width, glutWidget::m_height);
glutInit(&argc,argv);
glutInitDisplayString("samples rgb double depth");
glutCreateWindow("City");
glutMouseFunc(mouseHandler); //what to call when user clicks or scrolls
glutKeyboardFunc(keyDown); //what to call when user presses a key
glutKeyboardUpFunc(keyUp); //what to call when user releases a key
glutSpecialFunc(specialKeyDown); //what to call when user presses a special key
glutSpecialFunc(specialKeyUp); //what to call when user releases a special key
glutMotionFunc(mouseMove); //what to call when user moves the mouse
glutDisplayFunc(render); //what to call when window needs redrawing
glutIdleFunc(update); //what to call when no user input given
initOpenGL();
}
/*
Checks whether graphics driver supports all required OpenGL features
*/
void glutWidget::checkExtensions()
{
//query some extensions to make sure they are present
if(glewGetExtension("GL_ARB_shading_language_100") != GL_TRUE)
{
std::cout << "ERROR: Shading language extension not present." << std::endl;
}
if(glewGetExtension("GL_ARB_vertex_program") != GL_TRUE)
{
std::cout << "ERROR: Vertex program extension not present." << std::endl;
}
if(glewGetExtension("GL_ARB_vertex_shader") != GL_TRUE)
{
std::cout << "ERROR: Vertex shader extension not present." << std::endl;
}
if(glewGetExtension("GL_ARB_fragment_program") != GL_TRUE)
{
std::cout << "ERROR: Fragment program extension not present." << std::endl;
}
if(glewGetExtension("GL_ARB_fragment_shader") != GL_TRUE)
{
std::cout << "ERROR: Fragment shader extension not present." << std::endl;
}
if(glewGetExtension("GL_ARB_vertex_buffer_object") != GL_TRUE)
{
std::cout << "ERROR: VBO extension not present." << std::endl;
}
}
/*
Initializes opengl states
*/
void glutWidget::initOpenGL()
{
glewExperimental = GL_TRUE;
GLenum err = glewInit(); //initialize GLEW - this enables us to use extensions
if(err != GLEW_OK)
{
std::cout << "ERROR: Loading GLEW failed." << std::endl;
exit(-1);
}
checkExtensions();
glClearColor(1, 1, 1, 0); //default "empty"/background color is set to white
glEnable(GL_DEPTH_TEST);
CBitmap skybox("skybox.bmp"); //read bitmap image
glGenTextures(1, &m_texture); //allocate 1 texture
glUniform1i(skybox_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, skybox_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, skybox.GetWidth(), skybox.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, skybox.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0);
CBitmap streets("streets.bmp"); //read bitmap image
glGenTextures(1, &street_texture); //allocate 1 texture
glUniform1i(street_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, street_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, streets.GetWidth(), streets.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, streets.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap car("car.bmp"); //read bitmap image
glGenTextures(1, &car_texture); //allocate 1 texture
glUniform1i(car_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, car_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, car.GetWidth(), car.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, car.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap structure("structure.bmp"); //read bitmap image
glGenTextures(1, &structure_texture); //allocate 1 texture
glUniform1i(structure_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, structure_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, structure.GetWidth(), structure.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, structure.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
CBitmap wall("wall.bmp"); //read bitmap image
glGenTextures(1, &wall_texture); //allocate 1 texture
glUniform1i(wall_texture, 0); //pass texture location to vertex shader
glBindTexture(GL_TEXTURE_2D, wall_texture); //bind this texture to be active
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, wall.GetWidth(), wall.GetHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, wall.GetBits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); //specify minificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); //specify magnificaton filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); //specify texture coordinate treatment
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); //specify texture coordinate treatment
glBindTexture(GL_TEXTURE_2D, 0); //bind default texture to be active
makeShaders(); //load data of fragment and vertex programs/shaders - compile shaders
glMatrixMode(GL_PROJECTION);
glLoadIdentity(); //initializes projection matrix with identity
gluPerspective(60,(float)m_width/(float)m_height,0.1,1000); //set up projection mode (field of view, aspect ratio, near and far clipping plane)
glMatrixMode(GL_MODELVIEW);
glLoadIdentity(); //initializes modelview matrix with identity
glEnable(GL_CULL_FACE);
}
/*
Redraws window contents
*/
void glutWidget::render()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clears color and depth bits of framebuffer
//Convenience variables
float t = (float) ((int) (((float) clock()) * 50.0 / CLOCKS_PER_SEC) % 30) / 30.0;
int t2 = ((int) (((float) clock()) * 50.0 / CLOCKS_PER_SEC) % 240) / 30;
float t3 = (float) clock() * 5.0 / CLOCKS_PER_SEC;
//These are the control points for the bezier curves
GLfloat curves[8][4][3] =
{
{
{-8, 0, -8.5},
{-7, 0, -8.5},
{-5, 0, -8.5},
{-4, 0, -8.5}
},
{
{-4, 0, -8.5},
{-3.5, 0, -8.5},
{-3.5, 0, -8.5},
{-3.5, 0, -8}
},
{
{-3.5, 0, -8},
{-3.5, 0, -7},
{-3.5, 0, -5},
{-3.5, 0, -4}
},
{
{-3.5, 0, -4},
{-3.5, 0, -3.5},
{-3.5, 0, -3.5},
{-4, 0, -3.5}
},
{
{-4, 0, -3.5},
{-5, 0, -3.5},
{-7, 0, -3.5},
{-8, 0, -3.5}
},
{
{-8, 0, -3.5},
{-8.5, 0, -3.5},
{-8.5, 0, -3.5},
{-8.5, 0, -4}
},
{
{-8.5, 0, -4},
{-8.5, 0, -5},
{-8.5, 0, -7},
{-8.5, 0, -8}
},
{
{-8.5, 0, -8},
{-8.5, 0, -8.5},
{-8.5, 0, -8.5},
{-8, 0, -8.5}
}
};
//Manually evaluate the bezier curves
float s = 1 - t;
float AB[2] = {curves[t2][0][0]*s + curves[t2][1][0]*t, curves[t2][0][2]*s + curves[t2][1][2]*t};
float BC[2] = {curves[t2][1][0]*s + curves[t2][2][0]*t, curves[t2][1][2]*s + curves[t2][2][2]*t};
float CD[2] = {curves[t2][2][0]*s + curves[t2][3][0]*t, curves[t2][2][2]*s + curves[t2][3][2]*t};
float ABC[2] = {AB[0]*s + BC[0]*t, AB[1]*s + BC[1]*t};
float BCD[2] = {BC[0]*s + CD[0]*t, BC[1]*s + CD[1]*t};
float pos[2] = {ABC[0]*s + BCD[0]*t, ABC[1]*s + BCD[1]*t};
float slope = (ABC[1] - BCD[1]) / (ABC[0] - BCD[0]);
float theta = atan(slope);
//Rotation/translation matrix
float matrix[4][4] =
{
{cos(theta), 0, -sin(theta), 0},
{0, 1, 0, 0},
{sin(theta), 0, cos(theta), 0},
{pos[0], 0.01, pos[1], 1}
};
//Keep the texture pointing in the right direction throughout the loop
if((ABC[0] - BCD[0]) < 0)
{
matrix[0][2] = -(matrix[0][2]);
matrix[2][0] = -(matrix[2][0]);
}
else if((ABC[0] - BCD[0]) > 0)
{
matrix[0][0] = -(matrix[0][0]);
matrix[2][2] = -(matrix[2][2]);
}
//Draw streets
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, street_texture);
glUseProgram(m_program);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2f(0,1);
glNormal3f(0,1,0);
glVertex3f(-10,0,-10);
glTexCoord2f(0,0);
glNormal3f(0,1,0);
glVertex3f(-10,0,10);
glTexCoord2f(1,1);
glNormal3f(0,1,0);
glVertex3f(10,0,-10);
glTexCoord2f(1,0);
glNormal3f(0,1,0);
glVertex3f(10,0,10);
glEnd();
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
//
//Draw cars
for (int i = 0; i < 9; i++) {
matrix[3][0] = pos[0] + ((i % 3) * 6);
matrix[3][2] = pos[1] + ((i / 3) * 6);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glMultMatrixf(matrix[0]);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, car_texture);
glUseProgram(m_program);
drawCar();
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glPopMatrix();
if (i+1 == camera) {
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(matrix[3][0],0.5,matrix[3][2],sin(roty)+matrix[3][0],sin(rotx)+0.2,-cos(roty)+matrix[3][2],0,1,0); //Camera rotation/translation is done here
}
}
//
//Draw structures
for (int i = 0; i < 9; i++) {
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glTranslatef((i % 3) * 6, 0, (i / 3) * 6);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, structure_texture);
glUseProgram(m_program);
drawStructure();
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glPopMatrix();
}
//
//Draw skybox
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, skybox_texture);
glUseProgram(m_program);
drawSkybox();
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
//
//Draw walls
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, wall_texture);
glUseProgram(m_program);
drawWalls();
glUseProgram(0);
glDisable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
//
if (!camera) {
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(cposx,0.25,cposz,sin(roty)+cposx,sin(rotx)+cposy,-cos(roty)+cposz,0,1,0); //Camera rotation/translation is done here
}
glutSwapBuffers(); //swaps front and back buffer for double buffering
}
/*
Handles user event: a mouse button was pressed
*/
void glutWidget::mouseHandler(int button, int state, int x, int y)
{
if (state == GLUT_UP)
return;
switch(button)
{
case 0: //Left click
x0 = x;
y0 = y;
break;
case 2: //Right click
break;
case 3: //Scroll up
break;
case 4: //Scroll down
break;
}
}
/*
Handles user event: a key was pressed
*/
void glutWidget::keyDown(unsigned char key, int, int)
{
switch(key)
{
case '0':
camera = 0;
break;
case '1':
camera = 1;
break;
case '2':
camera = 2;
break;
case '3':
camera = 3;
break;
case '4':
camera = 4;
break;
case '5':
camera = 5;
break;
case '6':
camera = 6;
break;
case '7':
camera = 7;
break;
case '8':
camera = 8;
break;
case '9':
camera = 9;
break;
case 'q':
case 27:
stop(); //quit the main loop, exit program
break;
case 'c':
break;
case 'h':
break;
case 'w':
cposx += walk_speed * sin(roty);
cposz -= walk_speed * cos(roty);
break;
case 'a':
cposx -= walk_speed * cos(roty);
cposz -= walk_speed * sin(roty);
break;
case 's':
cposx -= walk_speed * sin(roty);
cposz += walk_speed * cos(roty);
break;
case 'd':
cposx += walk_speed * cos(roty);
cposz += walk_speed * sin(roty);
break;
}
}
/*
Handles user event: a key was released
*/
void glutWidget::keyUp(unsigned char key, int, int)
{
}
/*
Handles user event: a special key was pressed
*/
void glutWidget::specialKeyDown(int key, int, int)
{
}
/*
Handles user event: a special key was released
*/
void glutWidget::specialKeyUp(int key, int, int)
{
switch(key)
{
case GLUT_KEY_UP:
break;
case GLUT_KEY_DOWN:
break;
case GLUT_KEY_LEFT:
break;
case GLUT_KEY_RIGHT:
break;
}
}
void glutWidget::mouseMove(int x, int y)
{
float dx = ((x - x0)) / 5.0;
float dy = ((y - y0)) / 5.0;
roty += dx * (3.14159265 / 180.0);
rotx -= dy * (3.14159265 / 180.0);
if(rotx > 3.14159265 / 2)
rotx = 3.14159265 / 2;
else if(rotx < -3.14159265 / 2)
rotx = -3.14159265 / 2;
x0 = x;
y0 = y;
}
/*
Forces program to stop, cleans up, and exits
*/
void glutWidget::stop()
{
//clean up shaders
glDetachShader(m_program,m_fragmentsh);
glDeleteProgram(m_program);
glDeleteShader(m_fragmentsh);
exit(0);
}
/*
Reads in and compiles shader objects
*/
void glutWidget::makeShaders()
{
m_program = glCreateProgram();
char *shadercode = readShader("shaders/vertexshader.vert"); //reads shader code (you can edit shader code with a text editor)
m_vertexsh = glCreateShader(GL_VERTEX_SHADER_ARB);
glShaderSource(m_vertexsh, 1, (const GLcharARB **)&shadercode,NULL);
delete[] shadercode;
glCompileShader(m_vertexsh); //compiles shader
printInfoLog(m_vertexsh); //prints errors during shader compilation
shadercode = readShader("shaders/fragmentshader.frag"); //reads shader code (you can edit shader code with a text editor)
m_fragmentsh = glCreateShader(GL_FRAGMENT_SHADER_ARB);
glShaderSource(m_fragmentsh, 1, (const GLcharARB **)&shadercode,NULL);
delete[] shadercode;
glCompileShader(m_fragmentsh); //compiles shader
printInfoLog(m_fragmentsh); //prints errors during shader compilation
glAttachShader(m_program,m_vertexsh);
glAttachShader(m_program,m_fragmentsh);
glLinkProgram(m_program); //compiles fragment and vertex shader into a shader program
printInfoLog(m_program); //prints errors during program compilation
}
/*
Starts the main loop
*/
void glutWidget::run()
{
glutMainLoop();
}
/*
Called whenever no user input given
*/
void glutWidget::update()
{
m_frame++;
glutPostRedisplay(); //marks window for redrawing
}
void glutWidget::drawCar() {
glBegin(GL_QUADS);
//Right lower
glTexCoord2f(0,0.02);
glNormal3f(0,0,1);
glVertex3f(-.5,0,.19);
glTexCoord2f(1,0.02);
glNormal3f(0,0,1);
glVertex3f(.5,0,.19);
glTexCoord2f(1,0.21);
glNormal3f(0,0,1);
glVertex3f(.5,.21,.19);
glTexCoord2f(0,0.21);
glNormal3f(0,0,1);
glVertex3f(-.5,.21,.19);
//Right upper
glTexCoord2f(0,0.21);
glNormal3f(0,0,1);
glVertex3f(-.5,.21,.19);
glTexCoord2f(0.77,0.21);
glNormal3f(0,0,1);
glVertex3f(.27,.21,.19);
glTexCoord2f(0.59,0.32);
glNormal3f(0,0,1);
glVertex3f(.09,.32,.16);
glTexCoord2f(0.07,0.32);
glNormal3f(0,0,1);
glVertex3f(-.43,.32,.16);
//Left lower
glTexCoord2f(0,0.21);
glNormal3f(0,0,-1);
glVertex3f(-.5,.21,-.19);
glTexCoord2f(1,0.21);
glNormal3f(0,0,-1);
glVertex3f(.5,.21,-.19);
glTexCoord2f(1,0.02);
glNormal3f(0,0,-1);
glVertex3f(.5,0,-.19);
glTexCoord2f(0,0.02);
glNormal3f(0,0,-1);
glVertex3f(-.5,0,-.19);
//Left upper
glTexCoord2f(0.07,0.32);
glNormal3f(0,0,-1);
glVertex3f(-.43,.32,-.16);
glTexCoord2f(0.59,0.32);
glNormal3f(0,0,-1);
glVertex3f(.09,.32,-.16);
glTexCoord2f(0.77,0.21);
glNormal3f(0,0,-1);
glVertex3f(.27,.21,-.19);
glTexCoord2f(0,0.21);
glNormal3f(0,0,-1);
glVertex3f(-.5,.21,-.19);
//Front grill
glTexCoord2f(0.57,0.79);
glNormal3f(1,0,0);
glVertex3f(.5,0,.19);
glTexCoord2f(0.94,0.79);
glNormal3f(1,0,0);
glVertex3f(.5,0,-.19);
glTexCoord2f(0.94,0.97);
glNormal3f(1,0,0);
glVertex3f(.5,.21,-.19);
glTexCoord2f(0.57,0.97);
glNormal3f(1,0,0);
glVertex3f(.5,.21,.19);
//Hood
glTexCoord2f(0.92,0.42);
glNormal3f(0,1,0);
glVertex3f(.5,.21,.19);
glTexCoord2f(0.92,0.69);
glNormal3f(0,1,0);
glVertex3f(.5,.21,-.19);
glTexCoord2f(0.71,0.69);
glNormal3f(0,1,0);
glVertex3f(.27,.21,-.19);
glTexCoord2f(0.71,0.42);
glNormal3f(0,1,0);
glVertex3f(.27,.21,.19);
//Windshield
glTexCoord2f(0.70,0.42);
glNormal3f(0,1,0);
glVertex3f(.27,.21,.19);
glTexCoord2f(0.70,0.69);
glNormal3f(0,1,0);
glVertex3f(.27,.21,-.19);
glTexCoord2f(0.54,0.69);
glNormal3f(0,1,0);
glVertex3f(.09,.32,-.16);
glTexCoord2f(0.54,0.42);
glNormal3f(0,1,0);
glVertex3f(.09,.32,.16);
//Roof
glTexCoord2f(0.50,0.46);
glNormal3f(0,1,0);
glVertex3f(.09,.32,.16);
glTexCoord2f(0.50,0.67);
glNormal3f(0,1,0);
glVertex3f(.09,.32,-.16);
glTexCoord2f(0.07,0.67);
glNormal3f(0,1,0);
glVertex3f(-.43,.32,-.16);
glTexCoord2f(0.07,0.46);
glNormal3f(0,1,0);
glVertex3f(-.43,.32,.16);
//Back lower
glTexCoord2f(0.08,0.73);
glNormal3f(-1,0,0);
glVertex3f(-.5,0,-.19);
glTexCoord2f(0.44,0.73);
glNormal3f(-1,0,0);
glVertex3f(-.5,0,.19);
glTexCoord2f(0.44,0.88);
glNormal3f(-1,0,0);
glVertex3f(-.5,.21,.19);
glTexCoord2f(0.08,0.88);
glNormal3f(-1,0,0);
glVertex3f(-.5,.21,-.19);
//Back upper
glTexCoord2f(0.08,0.88);
glNormal3f(-1,0,0);
glVertex3f(-.5,.21,-.19);
glTexCoord2f(0.44,0.88);
glNormal3f(-1,0,0);
glVertex3f(-.5,.21,.19);
glTexCoord2f(0.42,1);
glNormal3f(-1,0,0);
glVertex3f(-.43,.32,.16);
glTexCoord2f(0.12,1);
glNormal3f(-1,0,0);
glVertex3f(-.43,.32,-.16);
glEnd();
}
void glutWidget::drawStructure() {
glBegin(GL_QUADS);
//Front
glTexCoord2f(0,0);
glNormal3f(0,0,1);
glVertex3f(-8,0,-4);
glTexCoord2f(1,0);
glNormal3f(0,0,1);
glVertex3f(-4,0,-4);
glTexCoord2f(1,1);
glNormal3f(0,0,1);
glVertex3f(-4,5,-4);
glTexCoord2f(0,1);
glNormal3f(0,0,1);
glVertex3f(-8,5,-4);
//Right
glTexCoord2f(0,0);
glNormal3f(1,0,0);
glVertex3f(-4,0,-4);
glTexCoord2f(1,0);
glNormal3f(1,0,0);
glVertex3f(-4,0,-8);
glTexCoord2f(1,1);
glNormal3f(1,0,0);
glVertex3f(-4,5,-8);
glTexCoord2f(0,1);
glNormal3f(1,0,0);
glVertex3f(-4,5,-4);
//Back
glTexCoord2f(0,0);
glNormal3f(0,0,-1);
glVertex3f(-4,0,-8);
glTexCoord2f(1,0);
glNormal3f(0,0,-1);
glVertex3f(-8,0,-8);
glTexCoord2f(1,1);
glNormal3f(0,0,-1);
glVertex3f(-8,5,-8);
glTexCoord2f(0,1);
glNormal3f(0,0,-1);
glVertex3f(-4,5,-8);
//Left
glTexCoord2f(0,0);
glNormal3f(-1,0,0);
glVertex3f(-8,0,-8);
glTexCoord2f(1,0);
glNormal3f(-1,0,0);
glVertex3f(-8,0,-4);
glTexCoord2f(1,1);
glNormal3f(-1,0,0);
glVertex3f(-8,5,-4);
glTexCoord2f(0,1);
glNormal3f(-1,0,0);
glVertex3f(-8,5,-8);
glEnd();
}
void glutWidget::drawSkybox() {
glBegin(GL_QUADS);
//Back
glTexCoord2f(.5,1.0/3.0);
glVertex3f(500,-500,-500);
glTexCoord2f(.5,2.0/3.0);
glVertex3f(500,500,-500);
glTexCoord2f(.25,2.0/3.0);
glVertex3f(-500,500,-500);
glTexCoord2f(.25,1.0/3.0);
glVertex3f(-500,-500,-500);
//Front
glTexCoord2f(1,0.334);
glVertex3f(-500,-500,500);
glTexCoord2f(1,0.665);
glVertex3f(-500,500,500);
glTexCoord2f(.75,0.665);
glVertex3f(500,500,500);
glTexCoord2f(.75,0.334);
glVertex3f(500,-500,500);
//Left
glTexCoord2f(0,0.334);
glVertex3f(-500,-500,500);
glTexCoord2f(.25,0.334);
glVertex3f(-500,-500,-500);
glTexCoord2f(.25,0.665);
glVertex3f(-500,500,-500);
glTexCoord2f(0,0.665);
glVertex3f(-500,500,500);
//Right
glTexCoord2f(.5,0.334);
glVertex3f(500,-500,-500);
glTexCoord2f(.75,0.334);
glVertex3f(500,-500,500);
glTexCoord2f(.75,0.665);
glVertex3f(500,500,500);
glTexCoord2f(.5,0.665);
glVertex3f(500,500,-500);
//Top
glTexCoord2f(.251,2.0/3.0);
glVertex3f(-500,500,-500);
glTexCoord2f(.499,2.0/3.0);
glVertex3f(500,500,-500);
glTexCoord2f(.499,1.0);
glVertex3f(500,500,500);
glTexCoord2f(.251,1.0);
glVertex3f(-500,500,500);
//Bottom
glTexCoord2f(.251,1.0/3.0);
glVertex3f(-500,-500,-500);
glTexCoord2f(.251,0.0/3.0);
glVertex3f(-500,-500,500);
glTexCoord2f(.499,0.0/3.0);
glVertex3f(500,-500,500);
glTexCoord2f(.499,1.0/3.0);
glVertex3f(500,-500,-500);
glEnd();
}
void glutWidget::drawWalls() {
glBegin(GL_QUADS);
glTexCoord2f(0,0);
glVertex3f(-10,0,-10);
glTexCoord2f(0,20);
glVertex3f(10,0,-10);
glTexCoord2f(1,20);
glVertex3f(10,0.5,-10);
glTexCoord2f(1,0);
glVertex3f(-10,0.5,-10);
glTexCoord2f(0,0);
glVertex3f(10,0,-10);
glTexCoord2f(0,20);
glVertex3f(10,0,10);
glTexCoord2f(1,20);
glVertex3f(10,0.5,10);
glTexCoord2f(1,0);
glVertex3f(10,0.5,-10);
glTexCoord2f(0,0);
glVertex3f(10,0,10);
glTexCoord2f(0,20);
glVertex3f(-10,0,10);
glTexCoord2f(1,20);
glVertex3f(-10,0.5,10);
glTexCoord2f(1,0);
glVertex3f(10,0.5,10);
glTexCoord2f(0,0);
glVertex3f(-10,0,10);
glTexCoord2f(0,20);
glVertex3f(-10,0,-10);
glTexCoord2f(1,20);
glVertex3f(-10,0.5,-10);
glTexCoord2f(1,0);
glVertex3f(-10,0.5,10);
glEnd();
}