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tablefan.c
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tablefan.c
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#include<stdio.h>
#include<stdlib.h>
#include<GL/glut.h>
int global = 0,tex1=0;
void myinit()
{ glClearColor(1.0,1.0,1.0,1.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static GLfloat theta[]={0.0,0.0,0.0};
static GLint axis=2;
GLfloat *make_texture(int maxs, int maxt)
{
int s, t;
static GLfloat *texture;
texture = (GLfloat *)malloc(maxs * maxt * sizeof(GLfloat));
for(t = 0; t < maxt; t++) {
for(s = 0; s < maxs; s++) {
texture[s + maxs * t] = ((s >> 4) & 0x1) ^ ((t >> 4) & 0x1);
}
}
return texture;
}
void wings()
{ glBegin(GL_POLYGON);
glColor3f(0.0,0.0,0.0); /*default color of fan*/
glVertex2f(0.0,0.0);
glVertex2f(-0.25,0.5);
glVertex2f(0.25,0.5);
glVertex2f(0.0,0.0);
glVertex2f(0.5,0.25);
glVertex2f(0.5,-0.25);
glVertex2f(0.0,0.0);
glVertex2f(-0.5,-0.25);
glVertex2f(-0.5,0.25);
glVertex2f(0.0,0.0);
glVertex2f(0.25,-0.5);
glVertex2f(-0.25,-0.5);
glEnd();
if(global==1 && tex1==1) /*Black texture color*/
{
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-0.25,0.5);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(0.25,0.5);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.5,0.25);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,1);
glVertex2f(0.5,-0.25);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(-0.5,-0.25);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,1);
glVertex2f(-0.5,0.25);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(0.25,-0.5);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(-0.25,-0.5);
glEnd();
glDisable(GL_TEXTURE_2D);
}
if(global==2 && tex1==1) /*Brown texture color*/
{
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-0.25,0.5);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,0);
glVertex2f(0.25,0.5);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.5,0.25);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,1);
glVertex2f(0.5,-0.25);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(-0.5,-0.25);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,1);
glVertex2f(-0.5,0.25);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(0.25,-0.5);
glColor3f(0.6,0.3,0.1);
glTexCoord2i(0,0);
glVertex2f(-0.25,-0.5);
glEnd();
glDisable(GL_TEXTURE_2D);
}
if(global==3 && tex1==1) /*purple texture color*/
{
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-0.25,0.5);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,0);
glVertex2f(0.25,0.5);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.5,0.25);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,1);
glVertex2f(0.5,-0.25);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(-0.5,-0.25);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,1);
glVertex2f(-0.5,0.25);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(0.25,-0.5);
glColor3f(0.7,0.0,0.7);
glTexCoord2i(0,0);
glVertex2f(-0.25,-0.5);
glEnd();
glDisable(GL_TEXTURE_2D);
}
if(global==4 && tex1==1) /*Blue texture color*/
{
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-0.25,0.5);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.25,0.5);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.5,0.25);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,1);
glVertex2f(0.5,-0.25);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,0);
glVertex2f(-0.5,-0.25);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-0.5,0.25);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,0);
glVertex2f(0.0,0.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(0.25,-0.5);
glColor3f(0.0,0.0,1.0);
glTexCoord2i(0,0);
glVertex2f(-0.25,-0.5);
glEnd();
glDisable(GL_TEXTURE_2D);
}
if(global==1 && tex1==0)
{
glBegin(GL_POLYGON);
glColor3f(0.0,0.0,0.0); /*black color*/
glVertex2f(0.0,0.0);
glVertex2f(-0.25,0.5);
glVertex2f(0.25,0.5);
glVertex2f(0.0,0.0);
glVertex2f(0.5,0.25);
glVertex2f(0.5,-0.25);
glVertex2f(0.0,0.0);
glVertex2f(-0.5,-0.25);
glVertex2f(-0.5,0.25);
glVertex2f(0.0,0.0);
glVertex2f(0.25,-0.5);
glVertex2f(-0.25,-0.5);
glEnd();
}
if(global==2 && tex1==0)
{
glBegin(GL_POLYGON); /*Brown color*/
glColor3f(0.6,0.3,0.1);
glVertex2f(0.0,0.0);
glVertex2f(-0.25,0.5);
glVertex2f(0.25,0.5);
glVertex2f(0.0,0.0);
glVertex2f(0.5,0.25);
glVertex2f(0.5,-0.25);
glVertex2f(0.0,0.0);
glVertex2f(-0.5,-0.25);
glVertex2f(-0.5,0.25);
glVertex2f(0.0,0.0);
glVertex2f(0.25,-0.5);
glVertex2f(-0.25,-0.5);
glEnd();
}
if(global==3 && tex1==0)
{
glBegin(GL_POLYGON); /*Purple color*/
glColor3f(0.7,0.0,0.7);
glVertex2f(0.0,0.0);
glVertex2f(-0.25,0.5);
glVertex2f(0.25,0.5);
glVertex2f(0.0,0.0);
glVertex2f(0.5,0.25);
glVertex2f(0.5,-0.25);
glVertex2f(0.0,0.0);
glVertex2f(-0.5,-0.25);
glVertex2f(-0.5,0.25);
glVertex2f(0.0,0.0);
glVertex2f(0.25,-0.5);
glVertex2f(-0.25,-0.5);
glEnd();
}
if(global==4 && tex1==0)
{
glBegin(GL_POLYGON); /*Blue color*/
glColor3f(0.0,0.0,1.0);
glVertex2f(0.0,0.0);
glVertex2f(-0.25,0.5);
glVertex2f(0.25,0.5);
glVertex2f(0.0,0.0);
glVertex2f(0.5,0.25);
glVertex2f(0.5,-0.25);
glVertex2f(0.0,0.0);
glVertex2f(-0.5,-0.25);
glVertex2f(-0.5,0.25);
glVertex2f(0.0,0.0);
glVertex2f(0.25,-0.5);
glVertex2f(-0.25,-0.5);
glEnd();
}
}
void display(void)
{
static GLfloat wall_mat[] = {1.f, 1.f, 1.f, 1.f}; /* Giving textures*/
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, wall_mat);
/* floor */
/* make the floor textured */
glEnable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(1.2,-0.7);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 1);
glVertex2f(2.7,-2.0);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0,1);
glVertex2f(-2.7,-2.0);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0,0);
glVertex2f(-1.2,-0.7);
glEnd();
glDisable(GL_TEXTURE_2D);
glBegin(GL_POLYGON); /*background wall*/
glNormal3f(1.f, 0.f, 0.f);
glColor3f(1.0,1.0,1.0);
glVertex2f(1.2,-0.7);
glVertex2f(-1.2,-0.7);
glVertex2f(-1.2,1.5);
glVertex2f(1.2,1.5);
glEnd();
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON); /*wall at right side*/
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(2.7,-2.0);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(1.2,-0.7);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(1.2,1.5);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(2.7,2.0);
glEnd();
glBegin(GL_POLYGON); /*wall at left side*/
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(-2.7,-2.0);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(-1.2,-0.7);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(-1.2,1.5);
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(-2.7,2.0);
glEnd();
glBegin(GL_POLYGON); /*Roof*/
glColor3f(1.0,1.0,1.0);
glTexCoord2i(0, 0);
glVertex2f(-2.7,2.0);
glTexCoord2i(0, 0);
glVertex2f(2.7,2.0);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(1.2,1.5);
glTexCoord2i(0, 0);
glVertex2f(-1.2,1.5);
glEnd();
glDisable(GL_TEXTURE_2D);
glEnable(GL_TEXTURE_2D);
glBegin(GL_POLYGON); /*stand for fan*/
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(0.0,0.0);
glColor3f(1.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(0.4,-1.0);
glColor3f(1.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(0.0,-1.2);
glColor3f(0.0,0.0,0.0);
glTexCoord2i(0, 0);
glVertex2f(-0.4,-1.0);
glEnd();
glDisable(GL_TEXTURE_2D);
glBegin(GL_LINES); /*lines outlining fan*/
glColor3f(0.0,0.0,0.0);
glVertex2f(0.0,0.0);
glVertex2f(0.0,-1.2);
glVertex2f(0.0,0.0);
glVertex2f(0.4,-1.0);
glVertex2f(0.4,-1.0);
glVertex2f(0.0,-1.2);
glVertex2f(0.0,-1.2);
glVertex2f(-0.4,-1.0);
glVertex2f(-0.4,-1.0);
glVertex2f(0.0,0.0);
glEnd();
/*buttons*/
glBegin(GL_POLYGON); /*start button*/
glColor3f(1.0,0.7,0.0);
glVertex2f(-0.1,-0.7);
glVertex2f(-0.1,-0.75);
glVertex2f(-0.15,-0.75);
glVertex2f(-0.15,-0.7);
glEnd();
glBegin(GL_POLYGON); /*stop button*/
glColor3f(0.0,1.0,0.0);
glVertex2f(-0.2,-0.7);
glVertex2f(-0.2,-0.75);
glVertex2f(-0.25,-0.75);
glVertex2f(-0.25,-0.7);
glEnd();
glBegin(GL_POLYGON); /*1st speed button*/
glColor3f(0.0,0.0,0.7);
glVertex2f(-0.15,-0.78);
glVertex2f(-0.15,-0.82);
glVertex2f(-0.2,-0.82);
glVertex2f(-0.2,-0.78);
glEnd();
glBegin(GL_POLYGON); /*2nd speed button*/
glColor3f(0.0,0.0,0.8);
glVertex2f(-0.15,-0.84);
glVertex2f(-0.15,-0.88);
glVertex2f(-0.2,-0.88);
glVertex2f(-0.2,-0.84);
glEnd();
glBegin(GL_POLYGON); /*3rd speed button*/
glColor3f(0.0,0.0,1.0
);
glVertex2f(-0.15,-0.90);
glVertex2f(-0.15,-0.94);
glVertex2f(-0.2,-0.94);
glVertex2f(-0.2,-0.90);
glEnd();
/*circled envelop*/
glColor3f(0.0,0.1,0.9); /*outer*/
glutSolidSphere(0.65,100,15);
glColor3f(1.0,1.0,1.0); /*inner*/
glutSolidSphere(0.62,100,15);
glRotatef(theta[0],1.0,0.0,0.0); /*rotation of the fan*/
glRotatef(theta[1],0.0,1.0,0.0);
glRotatef(theta[2],0.0,0.0,1.0);
wings();
glColor3f(1.5,0.0,0.2); /*circle in middle*/
glutSolidSphere(0.06,100,15);
glFlush();
}
void idle() /*speed at start*/
{theta[axis]+=0.05;
if(theta[axis]>360.0)
theta[axis]-=360.0;
glutPostRedisplay();
}
void idle1() /*speed at 1st level*/
{theta[axis]+=0.5;
if(theta[axis]>360.0)
theta[axis]-=360.0;
glutPostRedisplay();
}
void idle2() /*speed at 2nd level*/
{theta[axis]+=1.0;
if(theta[axis]>360.0)
theta[axis]-=360.0;
glutPostRedisplay();
}
void idle3() /*speed at 3rd level*/
{theta[axis]+=2.0;
if(theta[axis]>360.0)
theta[axis]-=360.0;
glutPostRedisplay();
}
void keys(unsigned char key,int x,int y) /*keyboard function to implement the fan rotation*/
{
if(key=='s')
{ glutIdleFunc(idle);
}
if(key=='1')
{glutIdleFunc(idle1);
}
if(key=='2')
{glutIdleFunc(idle2);
}
if(key=='3')
{glutIdleFunc(idle3);
}
if(key=='q')
{glutIdleFunc(NULL);
}
}
void myreshape(int w,int h)
{glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if(w<=h)
glOrtho(-2.0,2.0,-2.0*(GLfloat)h/(GLfloat)w,2.0*(GLfloat)h/(GLfloat)w,-10.0,10.0);
else
glOrtho(-2.0*(GLfloat)w/(GLfloat)h,2.0*(GLfloat)w/(GLfloat)h,-2.0,2.0,-10.0,10.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glutPostRedisplay();
}
void demo_menu(int id)
{ switch(id)
{ case 3:exit(0);
break;
}
glutPostRedisplay();
}
void color1(int id)
{ switch(id)
{ case 1:global=1;
break;
case 2:global=2;
break;
case 3:global=3;
break;
case 4:global=4;
break;
}
glutPostRedisplay();
}
void func1(int id)
{ switch(id)
{ case 1:glutIdleFunc(idle);
break;
case 2:glutIdleFunc(NULL);
break;
case 3:glutIdleFunc(idle1);
break;
case 4:glutIdleFunc(idle2);
break;
case 5:glutIdleFunc(idle3);
break;
}
glutPostRedisplay();
}
void tex2(int id)
{ switch(id)
{ case 1:tex1=1;
break;
case 2:tex1=0;
break;
}
glutPostRedisplay();
}
const int TEXDIM = 256;
void main(int argc,char **argv)
{ int color,func,text;
GLfloat *tex;
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
glutInitWindowPosition(0,0);
glutInitWindowSize(800,600);
glutCreateWindow(" The Table Fan");
glutReshapeFunc(myreshape);
myinit();
color = glutCreateMenu(color1);
glutAddMenuEntry("Black",1);
glutAddMenuEntry("Brown",2);
glutAddMenuEntry("Purple",3);
glutAddMenuEntry("Blue",4);
func = glutCreateMenu(func1);
glutAddMenuEntry("Start",1);
glutAddMenuEntry("Stop",2);
glutAddMenuEntry("Speed1",3);
glutAddMenuEntry("Speed2",4);
glutAddMenuEntry("Speed3",5);
text = glutCreateMenu(tex2);
glutAddMenuEntry("Enable",1);
glutAddMenuEntry("Disable",2);
glutCreateMenu(demo_menu);
glutAddSubMenu("Fan color",color);
glutAddSubMenu("Fan texture",text);
glutAddSubMenu("Functions",func);
glutAddMenuEntry("Quit",3);
glutAttachMenu(GLUT_RIGHT_BUTTON);
glutDisplayFunc(display);
//glutMouseFunc(mouse);
glutKeyboardFunc(keys);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
tex = make_texture(TEXDIM, TEXDIM);
glTexImage2D(GL_TEXTURE_2D, 0, 1, TEXDIM, TEXDIM, 0, GL_RED, GL_FLOAT, tex);
free(tex);
glutMainLoop();
}