#include #include GLsizei wh = 800, ww = 800; float left_theta = 0.0, right_theta = 0.0; int page_num = 0, old_page_num = 0; int turning = 0; /*flag to know page is turning*/ /***sandi globals***/ float spositionx = 20, spositiony = 0; /*initial position of cone on page1*/ float scenter = 0, sbalance = 0; /*for the changing point of balance on page 1*/ float stheta = 18; /*amount to rotate board on page1*/ int slevel = 1; /*level of expertise for page1 */ GLubyte stexture_image[3*32]; GLfloat sgenparams[] = {1.0, 1.0, 1.0, 0.0}; /*** seema globals ***/ float p_rock_theta = 0.0, p_rock_vert = 0.0; float p_wood_theta = 0.0, p_wood_theta2 = 0.0, p_wood_vert = 0.0; int p_level = 1; /*** dave globals ***/ int dir=0, grow=0; /*book upright or flat & spring dir*/ float sprangle=15, springthick=0.7, springpos, springt, vinit = 70; /*spring consts*/ int dlevel, dtype=1; /* begin/adv and which choice */ int dchoice, bounce=0; /*ligth/heavy obj, # of bounces*/ float startpt; /*where bouncing object starts*/ int cancycle=0; void sandipage(void); void sandilight(void); void sandimouse(int, int, int, int); void sandimouse2(int, int); void sanditext(void); void sanditexture(void); void sandimake_texture(void); void unlight(void); void untexture(void); void spoly(int, int, int, int); void seema_page(); void seema_light(); void seema_text(); void mover(); void davemouse(int, int, int, int); void davelight(); void davepage(void); void davetext(); void spring(int, int, int); /* coils, diameter, ground */ void davespring(void); /* moving spring */ void davebounce(); /* drop things on spring */ void davethrow(); /* use spring to throw stuff */ void davemenu1(int); void davemenu2(int); void init(void) { glClearColor(1.0, 0.0, 0.0, 0.0); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45, ww/wh, 10.0, 900.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } /* function for drawing page */ void page(float x, float y) { glVertex3f(x, y, 0.0); glVertex3f(x+300.0, y, 0.0); glVertex3f(x+300.0, y+400.0, 0.0); glVertex3f(x, y+400.0, 0.0); } void display(void) { int i; char cover[] = "Physics for Kids"; char cover2[] = "by"; char cover3[] = "Sandi, Seema, and Dave"; char help1[] = "Welcome to our interactive physics book for children!"; char help2[] = "Use the LEFT and RIGHT arrow keys to advance the pages forwards and backwards."; char help3[] = "Each page will have its own instructions on the left side."; char help4[] = "To quit, use the RIGHT mouse button."; char back[] = "The End"; char page1[] = "Page 1"; char page2[] = "Page 2"; char page3[] = "Page 3"; glLoadIdentity(); gluLookAt(0.0, 0.0, 800.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glColor3f(1.0, 1.0, 1.0); glRasterPos3f(-290.0, -250.0, 1.0); for (i=0; i < strlen(help1); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, help1[i]); glRasterPos3f(-290.0, -270.0, 1.0); for (i=0; i < strlen(help2); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, help2[i]); glRasterPos3f(-290.0, -290.0, 1.0); for (i=0; i < strlen(help3); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, help3[i]); glRasterPos3f(-290.0, -310.0, 1.0); for (i=0; i < strlen(help4); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, help4[i]); /* draw left page if page = 0, i.e. cover page */ if (page_num!=0) { glPushMatrix(); glRotatef(left_theta, 0.0, 1.0, 0.0); glColor3f(1.0, 1.0, 1.0); glBegin(GL_QUADS); page(-300.0, -200.0); glEnd(); glColor3f(0.0, 0.0, 0.0); glBegin(GL_LINE_LOOP); page(-300.0, -200.0); glEnd(); if (page_num==4) { if(!turning) { glRasterPos3f(-190.0, 10.0, 1.0); for (i=0; i < strlen(back); i++) glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, back[i]); } old_page_num = 4; } glPopMatrix(); } /* draw right page if book not closed shut */ if (page_num!= 4) { glPushMatrix(); glRotatef(-right_theta, 0.0, 1.0, 0.0); glColor3f(1.0, 1.0, 1.0); glBegin(GL_POLYGON); page(0.0, -200.0); glEnd(); glColor3f(0.0, 0.0, 0.0); glBegin(GL_LINE_LOOP); page(0.0, -200.0); glEnd(); if (page_num==0 && !turning) { glRasterPos3f(90.0, 10.0, 1.0); for (i=0; i < strlen(cover); i++) glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, cover[i]); glRasterPos3f(142.0, -20.0, 1.0); for (i=0; i < strlen(cover2); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, cover2[i]); glRasterPos3f(75.0, -50.0, 1.0); for (i=0; i < strlen(cover3); i++) glutBitmapCharacter(GLUT_BITMAP_9_BY_15, cover3[i]); glPushMatrix(); glTranslatef(120, 17, 22); /* move to final position */ glRotatef(60, 0, 1, 0); /* make elipse */ glRotatef(dir, 0, 0, 1); /* rotate it */ glTranslatef(30, 0, 0); /* set orbit of 30*/ glColor3f(0.0, 1.0, 0.0); glutSolidSphere(3, 15, 15); glTranslatef(-60, 0, 0); glColor3f(0.0, 1.0, 1.0); glutSolidSphere(3, 15, 15); glPopMatrix(); glPushMatrix(); glTranslatef(120, 17, 22); /* move to final position */ glRotatef(-60, 0, 1, 0); /* make elipse */ glRotatef(dir+90, 0, 0, 1); /* rotate it */ glTranslatef(30, 0, 0); /* set orbit of 30*/ glColor3f(1.0, 1.0, 0.0); glutSolidSphere(3, 15, 15); glPopMatrix(); dir +=9; } /* if page=1, draw Sandi's page */ if (page_num==1) { if (!turning) { glRasterPos3f(250.0, 185.0, 1.0); for (i=0; i < strlen(page1); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, page1[i]); } glutSetMenu(1); glutAttachMenu(GLUT_LEFT_BUTTON); glutDetachMenu(GLUT_MIDDLE_BUTTON); old_page_num = 1; sanditext(); sandilight(); sandipage(); } /* if page=2, draw Seema's page */ if (page_num==2) { if (!turning) { glRasterPos3f(250.0, 185.0, 1.0); for (i=0; i < strlen(page2); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, page2[i]); } glutDetachMenu(GLUT_LEFT_BUTTON); glutDetachMenu(GLUT_MIDDLE_BUTTON); glutSetMenu(2); glutAttachMenu(GLUT_LEFT_BUTTON); glutSetMenu(3); glutAttachMenu(GLUT_MIDDLE_BUTTON); old_page_num=2; seema_text(); seema_light(); seema_page(); } /* if page=3, draw Dave's page */ if (page_num==3) { if (!turning) { glRasterPos3f(250.0, 185.0, 1.0); for (i=0; i < strlen(page3); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, page3[i]); } if(old_page_num != 3) { glutDetachMenu(GLUT_MIDDLE_BUTTON); glutDetachMenu(GLUT_LEFT_BUTTON); glutSetMenu(4); glutAttachMenu(GLUT_LEFT_BUTTON); old_page_num = 3; } davelight(); davetext(); davepage(); } glPopMatrix(); } glFlush(); glutSwapBuffers(); } void keys(int key, int x, int y) { /* right arrow key turns pages forward until back cover displayed */ /* if back cover displayed, next depression of this key displays front cover */ if (key == GLUT_KEY_RIGHT) { glutDetachMenu(GLUT_LEFT_BUTTON); glutDetachMenu(GLUT_MIDDLE_BUTTON); turning = 1; unlight(); while (right_theta < 190.0) { display(); unlight(); right_theta += 10.0; }; page_num = (page_num + 1) % 5; right_theta = 0.0; turning = 0; display(); } /* left arrow key turns pages back until front cover displayed */ /* if front cover displayed, next depression of this key does nothing */ if (key == GLUT_KEY_LEFT) { glutDetachMenu(GLUT_LEFT_BUTTON); glutDetachMenu(GLUT_MIDDLE_BUTTON); turning = 1; if (page_num > 0) { unlight(); while (left_theta < 190.0) { display(); unlight(); left_theta += 10.0; }; page_num = page_num - 1; left_theta = 0.0; turning = 0; display(); } } } void mouse(int button, int state, int x, int y) { if(page_num==1) { sandimouse(button, state, x, y); } else if(page_num==3) davemouse(button, state, x, y); } /*placing the cone and effects to the board*/ void sandimouse2(int x, int y) { spositionx = x-400-150-50; /*convert window to obj coords*/ /*don't let cone go past board edges*/ if(spositionx > 125) spositionx = 125; if(spositionx < -125) spositionx = -124; stheta = asin(45/(125 + fabs(spositionx))); stheta = (180*stheta)/ 3.14159; /*convert to radians*/ /*give 2 pixels of freedom for place of balance*/ if((spositionx == sbalance) || (spositionx > (sbalance-5) && spositionx < (sbalance+5))) { stheta = 0; } else if(spositionx < 0 && spositionx >sbalance) { stheta = asin(45/(125+spositionx)); stheta = (180*stheta)/3.14159; } else if(spositionx < sbalance) { stheta = -stheta; } unlight(); display(); } void sandimouse(int button, int state, int x, int y) { /*middle button places the cone*/ if(button==GLUT_MIDDLE_BUTTON && state == GLUT_DOWN) { sandimouse2(x, y); } } void davemouse(int button, int state, int x, int y) { if ((dtype==2) && ((bounce==0)||(bounce==4))) /*only for bouncing option */ { if((button==GLUT_MIDDLE_BUTTON) && (x>400)&&(x<452)&&(y<350)) dchoice = 1; else if((button==GLUT_MIDDLE_BUTTON) && (x<490) && (y<350)) dchoice = 2; else dchoice = 0; } } void sandipage(void) { GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 }; GLfloat mat_shininess[] = { 100.0 }; GLfloat mat_diffuse[] = {1.0, 0.0, 1.0, 1.0 }; GLfloat mat_specular2[] = { 1.0, 1.0, 1.0, 1.0 }; GLfloat mat_shininess2[] = { 50.0 }; GLfloat mat_diffuse2[] = {1.0, 0.0, 0.0, 1.0 }; GLfloat mat_specular3[] = { 1.0, 0.0, 0.5, 1.0 }; GLfloat mat_shininess3[] = { 20.0 }; GLfloat mat_diffuse3[] = {0.7, 0.4, 0.6, 1.0 }; char weight1[] = "1"; char weight2[] = "2"; if(turning) { glScalef(1.0,1.0,0.1); } sanditexture(); /*give the table its properties*/ glPushMatrix(); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse3); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular3); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess3); glPopMatrix(); /*draw the table*/ glPushMatrix(); glTranslatef(150, -100, 10); glRotatef(10, 1.0, 0.0, 0.0); glScalef(7, .2, 1); glutSolidCube(40); glPopMatrix(); untexture(); /*give the base its properties*/ glPushMatrix(); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); glPopMatrix(); /*draw the base*/ glPushMatrix(); glTranslatef(150,-100,10); /*place on lower rt page*/ glTranslatef(spositionx, spositiony, 10); /*amount to move from mouse*/ glRotatef(-90, 1.0, 0.0, 0.0); /*for correct orientation of cone*/ glutSolidCone(25, 45, 50, 50); glPopMatrix(); /*give the bar its properties*/ sanditexture(); glPushMatrix(); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse2); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular2); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess2); glPopMatrix(); /*draw the bar*/ glPushMatrix(); glTranslatef(150, -100, 10); /*place on lower rt page*/ glTranslatef(0, 50, 10); /*to position above cone*/ /*when the cone is moved, need to rotate board about the point where the cone is now. So, translate that point to orgin, rotate as needed, and translate back*/ glTranslatef(spositionx, 0 , 0); glRotatef(stheta, 0.0, 0.0, 1.0); glTranslatef(-spositionx, 0, 0); glScalef(5,.2,1); /*change a cube into a board*/ glutSolidCube(50); glPopMatrix(); untexture(); /*level 2: weights added*/ if(slevel==2 || slevel ==3) { /*same explanations as for the board*/ glPushMatrix(); glTranslatef(150, -100, 10); glTranslatef(spositionx, 0.0, 0.0); glRotatef(stheta, 0.0 , 0.0, 1.0); glTranslatef(100, 60, 10); /*position on board*/ glTranslatef(-spositionx, 0.0, 0.0); glRasterPos3f(-5.0, 0.0, 25.0); glutBitmapCharacter(GLUT_BITMAP_8_BY_13, weight1[0]); glutSolidCube(20); glPopMatrix(); glPushMatrix(); glTranslatef(150, -100, 10); glTranslatef(spositionx, 0.0, 0.0); glRotatef(stheta, 0.0, 0.0, 1.0); glTranslatef(-100, 65, 10); /*position on board*/ glTranslatef(-spositionx, 0.0, 0.0); glRasterPos3f(-3.0, 0.0, 35.0); glutBitmapCharacter(GLUT_BITMAP_8_BY_13, weight2[0]); glutSolidCube(30); glPopMatrix(); } } void sanditext(void) { int i; char text1[] = "BALANCE"; char text2[] = "Can you balance this board?"; char text7[] = "Now there are weights on the board."; char text8[] = "The larger one weighs 2 kg and the"; char text9[] = "smaller weighs 1kg."; char text10[] = "How does this change the balance?"; char text11[] = "For the board to balance, this must be true: "; char text12[] = "d1*w1 = d2*w2"; char text13[] = "where d1 and d2 are the distance from"; char text14[] = "the cone, and w1 and w2 are the weights"; char text15[] = "of the sides."; char text3[] = "Click the MIDDLE mouse button on"; char text4[] = "the spot for the cone to balance the beam."; char text5[] = "Use the menu on the LEFT button to"; char text6[] = "choose different levels."; if(!turning) { glRasterPos3f(-195, 165, 1.0); for (i=0; i < strlen(text1); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text1[i]); glRasterPos3f(-290, 110, 1.0); for (i=0; i < strlen(text2); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text2[i]); /* glRasterPos3f(-290, 95, 1.0); for (i=0; i < strlen(text5); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text5[i]); glRasterPos3f(-290, 80, 1.0); for (i=0; i < strlen(text6); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text6[i]);*/ /*help info at bottom of page*/ glPushAttrib(GL_ALL_ATTRIB_BITS); glColor3f(0.0, 0.5, 0.0); glRasterPos3f(-290, -100, 1.0); for (i=0; i < strlen(text3); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text3[i]); glRasterPos3f(-290, -115, 1.0); for (i=0; i < strlen(text4); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text4[i]); glRasterPos3f(-290, -135, 1.0); for (i=0; i < strlen(text5); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text5[i]); glRasterPos3f(-290, -150, 1.0); for (i=0; i < strlen(text6); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text6[i]); glPopAttrib(); if(slevel == 2 || slevel ==3) { glRasterPos3f(-290, 70, 1.0); for (i=0; i < strlen(text7); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text7[i]); glRasterPos3f(-290, 55, 1.0); for (i=0; i < strlen(text8); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text8[i]); glRasterPos3f(-290, 40, 1.0); for (i=0; i < strlen(text9); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text9[i]); glRasterPos3f(-290, 25, 1.0); for (i=0; i < strlen(text10); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text10[i]); } if(slevel == 3) { glRasterPos3f(-290, 0, 1.0); for (i=0; i < strlen(text11); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text11[i]); glRasterPos3f(-290, -15, 1.0); for (i=0; i < strlen(text12); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text12[i]); glRasterPos3f(-290, -30, 1.0); for (i=0; i < strlen(text13); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text13[i]); glRasterPos3f(-290, -45, 1.0); for (i=0; i < strlen(text14); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text14[i]); glRasterPos3f(-290, -60, 1.0); for (i=0; i < strlen(text15); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text15[i]); } } } void sandilight(void) { GLfloat light_position[] = { 1.0, 0.0, 1.0, 0.0 }; GLfloat light_spec[] = {1.0, 1.0, 1.0, 1.0 }; GLfloat light_diff[] = {1.0, 1.0, 1.0, 1.0 }; glLightfv(GL_LIGHT0, GL_POSITION, light_position); glLightfv(GL_LIGHT0, GL_SPECULAR, light_spec); /* glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diff);*/ glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glDepthFunc(GL_LESS); glEnable(GL_DEPTH_TEST); } void sandimake_texture(void) { int j; for (j = 0; j < 32; j++) { stexture_image[3*j] = (j<=4) ? 255 : 0; stexture_image[3*j+1] = (j>4) ? 205 : 0; stexture_image[3*j+2] = 1; } } void sanditexture(void) { sandimake_texture(); glPushMatrix(); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexImage1D(GL_TEXTURE_1D, 0, 3, 32, 0, GL_RGB, GL_UNSIGNED_BYTE, stexture_image); glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); glTexGenfv(GL_S, GL_OBJECT_PLANE, sgenparams); glPopMatrix(); glEnable(GL_TEXTURE_GEN_S); glEnable(GL_TEXTURE_1D); } void sandimenu(int id) { if(id==1) { slevel=1; sbalance = 0; scenter = 150; sandimouse2(620,400); /*reposition the balance*/ unlight(); display(); } if(id==2) { slevel=2; sbalance = -42; scenter = 150-42; sandimouse2(620,400); /*reposition the balance*/ unlight(); display(); } if(id==3) { slevel = 3; sbalance = -42; scenter = 150-42; sandimouse2(620,400); unlight(); display(); } } void seema_menu(int id) { if (id==1) p_level = 1; if (id==2) p_level = 2; if (id==3) p_level = 3; unlight(); display(); } void seema_light() { glEnable(GL_SMOOTH); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glDepthFunc(GL_LESS); glEnable(GL_DEPTH_TEST); } void seema_page() { GLfloat light_position[] = {0.0, 0.0, 1.0, 1.0 }; GLfloat light_position2[] = { -3.0, 1.0, 1.0, 0.0 }; GLfloat light_position3[] = { -5.0, 1.0, 3.0, 0.0 }; GLfloat glass_amb[] = { 0.15, 0.15, 0.15, 0.20 }; GLfloat glass_diff[] = { 0.15, 0.15, 0.15, 0.20 }; GLfloat glass_spec[] = {1.0, 1.0, 1.0, 0.20 }; GLfloat glass_emission[] = { 0.15, 0.15, 0.15, 0.20 }; GLfloat glass_shini[] = { 100.0 }; GLfloat water_amb[] = { 0.2, 0.2, 0.2, 0.50}; GLfloat water_diff[] = { 0.0, 0.2, 1.0, 0.50}; GLfloat water_spec[] = { 1.0, 1.0, 1.0, 0.50}; GLfloat water_emission[] = { 0.0, 0.3, 1.0, 0.50 }; GLfloat water_shini[] = { 15.0 }; GLfloat wood_amb[] = { 0.2, 0.2, 0.2, 1.0}; GLfloat wood_diff[] = { 0.5, 0.0, 0.0, 1.0 }; GLfloat wood_spec[] = { 1.0, 1.0, 1.0, 1.0 }; GLfloat wood_emission[] = { 0.0, 0.0, 0.0, 1.0 }; GLfloat rock_diff[] = { 0.8, 0.8, 0.8, 1.0 }; GLUquadricObj *glass, *water_cyl, *water_disk_top, *water_disk_bottom; if(turning) { glScalef(1.0,1.0,0.1); } glMaterialfv(GL_FRONT, GL_AMBIENT, wood_amb); glMaterialfv(GL_FRONT, GL_SPECULAR, wood_spec); glMaterialfv(GL_FRONT, GL_SHININESS, water_shini); glPushMatrix(); glLightfv(GL_LIGHT0, GL_POSITION, light_position2); glMaterialfv(GL_FRONT, GL_DIFFUSE, wood_diff); glTranslatef(140.0, -70.0, 50.0); if (p_wood_theta2 == 90.0) glRotatef(-40.0, 1.0, 0.0, 0.0); glRotatef(-p_wood_theta2, 0.0, 0.0, 1.0); glTranslatef(-140.0, 70.0, -50.0); glTranslatef(0.0, -p_wood_vert, 0.0); glTranslatef(230.0, 0.0, 230.0); glRotatef(p_wood_theta, 0.0, 0.0, 1.0); glTranslatef(-230.0, 0.0, -230.0); glTranslatef(230, 90, 50); glRotatef(40.0, 1.0, 0.0, 0.0); glScalef(6.0, 1.0, 2.5); glutSolidCube(10); glPopMatrix(); glPushMatrix(); glLightfv(GL_LIGHT0, GL_POSITION, light_position3); glMaterialfv(GL_FRONT, GL_DIFFUSE, rock_diff); glTranslatef(0.0, -p_rock_vert, 0.0); glTranslatef(50.0, 0.0, 50.0); glRotatef(-p_rock_theta, 0.0, 0.0, 1.0); glTranslatef(-50.0, 0.0, -50.0); glTranslatef(50.0, 90.0, 50.0); glutSolidSphere(25.0, 8.0, 8.0); glPopMatrix(); glPushMatrix(); glLightfv(GL_LIGHT0, GL_POSITION, light_position); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE); /* rotate gluCylinder upright and translate */ /* coord sys +z dir = glu -y dir */ /* coord sys +y dir = glu +z dir */ glMaterialfv(GL_FRONT, GL_AMBIENT, water_amb); glMaterialfv(GL_FRONT, GL_DIFFUSE, water_diff); glMaterialfv(GL_FRONT, GL_SPECULAR, water_spec); glMaterialfv(GL_FRONT, GL_EMISSION, water_emission); glMaterialfv(GL_FRONT, GL_SHININESS, water_shini); glEnable(GL_BLEND); glDepthMask(GL_FALSE); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glRotatef(-90.0, 1.0, 0.0, 0.0); glTranslatef(140.0, -50.0, -150.0); water_cyl = gluNewQuadric(); gluQuadricDrawStyle(water_cyl, GLU_FILL); gluCylinder(water_cyl, 49.0, 49.0, 75.0, 20.0, 20.0); water_disk_bottom = gluNewQuadric(); gluQuadricDrawStyle(water_disk_bottom, GLU_FILL); gluDisk(water_disk_bottom, 0.0, 49.0, 20.0, 20.0); glPushMatrix(); glTranslatef(0.0, 0.0, 75.0); water_disk_top = gluNewQuadric(); gluQuadricDrawStyle(water_disk_top, GLU_FILL); gluDisk(water_disk_top, 0.0, 49.0, 20.0, 20.0); glPopMatrix(); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE); glMaterialfv(GL_FRONT, GL_AMBIENT, glass_amb); glMaterialfv(GL_FRONT, GL_DIFFUSE, glass_diff); glMaterialfv(GL_FRONT, GL_SPECULAR, glass_spec); glMaterialfv(GL_FRONT, GL_EMISSION, glass_emission); glMaterialfv(GL_FRONT, GL_SHININESS, glass_shini); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glass = gluNewQuadric(); gluQuadricDrawStyle(glass, GLU_FILL); gluCylinder(glass, 50.0, 50.0, 125.0, 20.0, 20.0); glDepthMask(GL_TRUE); glDisable(GL_BLEND); glPopMatrix(); glMaterialfv(GL_FRONT, GL_EMISSION, wood_emission); } void seema_text() { int i; char text1[] = "BUOYANCY"; char text2[] = "What makes an object float?"; char text3[] = "Will the rock and wood float or sink?"; char text4[] = "An object will float if it weighs less"; char text5[] = "than the water it displaces (or pushes "; char text6[] = "out of the way). It will sink if it weighs"; char text7[] = "more than the displaced water."; char text8[] = "Water pushes up on an object with a"; char text9[] = "buoyant force Fb."; char text10[] = "Fb = weight of water displaced by object"; char text11[] = "mg = weight of object"; char text12[] = "If (Fb > mg) ==> object will float."; char text13[] = "If (Fb < mg) ==> object will sink."; char text14[] = "Use the menu on the MIDDLE BUTTON to choose"; char text15[] = "which object to drop in the water."; char text16[] = "Use menu on the LEFT BUTTON to select a"; char text17[] = "difficulty level."; if(!turning) { glRasterPos3f(-190, 175, 1.0); for (i=0; i < strlen(text1); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text1[i]); glRasterPos3f(-290, 150, 1.0); for (i=0; i < strlen(text2); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text2[i]); glRasterPos3f(-290, 135, 1.0); for (i=0; i < strlen(text3); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text3[i]); if (p_level==2 || p_level==3) { glRasterPos3f(-290, 105, 1.0); for (i=0; i < strlen(text4); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text4[i]); glRasterPos3f(-290, 90, 1.0); for (i=0; i < strlen(text5); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text5[i]); glRasterPos3f(-290, 75, 1.0); for (i=0; i < strlen(text6); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text6[i]); glRasterPos3f(-290, 60, 1.0); for (i=0; i < strlen(text7); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text7[i]); } if (p_level==3) { glRasterPos3f(-290, 30, 1.0); for (i=0; i < strlen(text8); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text8[i]); glRasterPos3f(-290, 15, 1.0); for (i=0; i < strlen(text9); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text9[i]); glRasterPos3f(-290, 0, 1.0); for (i=0; i < strlen(text10); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text10[i]); glRasterPos3f(-290, -15, 1.0); for (i=0; i < strlen(text11); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text11[i]); glRasterPos3f(-290, -35, 1.0); for (i=0; i < strlen(text12); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text12[i]); glRasterPos3f(-290, -50, 1.0); for (i=0; i < strlen(text13); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text13[i]); } glPushAttrib(GL_ALL_ATTRIB_BITS); glColor3f(0.0, 0.5, 0.0); glRasterPos3f(-290, -100, 1.0); for (i=0; i < strlen(text14); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text14[i]); glRasterPos3f(-290, -115, 1.0); for (i=0; i < strlen(text15); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text15[i]); glRasterPos3f(-290, -135, 1.0); for (i=0; i < strlen(text16); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text16[i]); glRasterPos3f(-290, -150, 1.0); for (i=0; i < strlen(text17); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text17[i]); glPopAttrib(); } } void seema_drop_menu(int id) { if (id==1) { do { unlight(); p_rock_theta += 10.0; display(); } while (p_rock_theta!= 90.0); if (p_rock_theta==90.0) { do { unlight(); p_rock_vert += 25.0; display(); } while (p_rock_vert!= 125.0); } p_rock_theta = 0.0; p_rock_vert = 0.0; } if (id==2) { do { unlight(); p_wood_theta += 10.0; display(); } while (p_wood_theta!= 90.0); if (p_wood_theta==90.0) { do { unlight(); p_wood_vert += 35.0; display(); } while (p_wood_vert!=70.0); } if (p_wood_vert == 70.0) { do { unlight(); p_wood_theta2 += 30.0; display(); } while (p_wood_theta2!=90.0); } p_wood_theta = 0.0; p_wood_vert = 0.0; p_wood_theta2 = 0.0; } } void davepage(void) { if(turning) { glScalef(1.0,1.0,0.1); } glTranslatef(140.0, 0.0, 50.0); glRotatef(90.0, 1.0, 0.0, 0.0); glScalef(.9, .9, .9); if(dtype==1) /*learn about the spring */ davespring(); else if (dtype==2) /*learn about dropping weights */ { if (bounce<4) /*bounce 4 times*/ davebounce(); else if (dchoice !=0) /*restart*/ { vinit = 0; davebounce(); } else { vinit = 100; bounce=0; } } /* else if (dtype==3) */ /*learn about throwing things*/ /* davethrow();*/ } void davetext() { int i; char text1[] = "SPRINGS"; char text2[] = "A spring is a special object that is able"; char text3[] = "to store energy by being pressed or pulled."; char text4[] = "When released, the spring creates a force."; char text5[] = "The harder it is pressed or pulled the"; char text6[] = "more force it has to give."; char text7[] = "The force of the spring is proportional"; char text8[] = "to the displacement of the spring"; char text9[] = "from it's normal unstretched position."; char text10[] = "This force also depends on the"; char text11[] = "material the spring is made of."; char text12[] = " F = kx"; char text13[] = "Use the LEFT button to choose the example"; char text30[] = "or learning level."; char text14[] = "The spring can be used to move objects."; char text15[] = "The lighter the object, the less force"; char text16[] = "it has to push the object away."; char text17[] = "Force is proportional to the displacement"; char text18[] = "of the spring and the mass of the object."; char text19[] = " F = kx = ma "; char text20[] = "Changing kinetic to potential energy gives"; char text21[] = " 1/2 mv^2 = mgh "; char text22[] = "So, the final velocity of the object is"; char text23[] = " v = sqrt(2gh)"; char text24[] = "The general equation of motion is:"; char text25[] = " x = vt + 1/2 gt^2 "; char text26[] = "Click the MIDDLE button on an object to"; char text27[] = "drop it on the spring. The globe is light,"; char text28[] = "and the block is heavy. After it stops,"; char text29[] = "click on the screen to restart."; if (dtype == 1) /* spring choice */ { if(!turning) { glRasterPos3f(-190, 175, 1.0); for (i=0; i < strlen(text1); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text1[i]); if (dlevel == 1) /*beginner */ { glRasterPos3f(-290, 150, 1.0); for (i=0; i < strlen(text2); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text2[i]); glRasterPos3f(-290, 135, 1.0); for (i=0; i < strlen(text3); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text3[i]); glRasterPos3f(-290, 105, 1.0); for (i=0; i < strlen(text4); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text4[i]); glRasterPos3f(-290, 90, 1.0); for (i=0; i < strlen(text5); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text5[i]); glRasterPos3f(-290, 75, 1.0); for (i=0; i < strlen(text6); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text6[i]); } if (dlevel==2) { glRasterPos3f(-290, 30, 1.0); for (i=0; i < strlen(text7); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text7[i]); glRasterPos3f(-290, 15, 1.0); for (i=0; i < strlen(text8); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text8[i]); glRasterPos3f(-290, 0, 1.0); for (i=0; i < strlen(text9); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text9[i]); glRasterPos3f(-290, -25, 1.0); for (i=0; i < strlen(text10); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text10[i]); glRasterPos3f(-290, -40, 1.0); for (i=0; i < strlen(text11); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text11[i]); glRasterPos3f(-290, -55, 1.0); for (i=0; i < strlen(text12); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text12[i]); } glRasterPos3f(-290, -160, 1.0); for (i=0; i < strlen(text13); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text13[i]); glRasterPos3f(-290, -175, 1.0); for (i=0; i < strlen(text30); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text30[i]); } } else if (dtype == 2) /* bouncing demo */ { if(!turning) { glRasterPos3f(-190, 175, 1.0); for (i=0; i < strlen(text1); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text1[i]); if (dlevel == 1) { glRasterPos3f(-290, 135, 1.0); for (i=0; i < strlen(text14); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text14[i]); glRasterPos3f(-290, 120, 1.0); for (i=0; i < strlen(text15); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text15[i]); glRasterPos3f(-290, 105, 1.0); for (i=0; i < strlen(text16); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text16[i]); } else if (dlevel==2) { glRasterPos3f(-290, 90, 1.0); for (i=0; i < strlen(text17); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text17[i]); glRasterPos3f(-290, 75, 1.0); for (i=0; i < strlen(text18); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text18[i]); glRasterPos3f(-290, 60, 1.0); for (i=0; i < strlen(text19); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text19[i]); glRasterPos3f(-290, 35, 1.0); for (i=0; i < strlen(text20); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text20[i]); glRasterPos3f(-290, 20, 1.0); for (i=0; i < strlen(text21); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text21[i]); glRasterPos3f(-290, 0, 1.0); for (i=0; i < strlen(text22); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text22[i]); glRasterPos3f(-290, -15, 1.0); for (i=0; i < strlen(text23); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text23[i]); glRasterPos3f(-290, -40, 1.0); for (i=0; i < strlen(text24); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text24[i]); glRasterPos3f(-290, -55, 1.0); for (i=0; i < strlen(text25); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text25[i]); } glRasterPos3f(-290, -125, 1.0); for (i=0; i < strlen(text26); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text26[i]); glRasterPos3f(-290, -140, 1.0); for (i=0; i < strlen(text27); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text27[i]); glRasterPos3f(-290, -155, 1.0); for (i=0; i < strlen(text28); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text28[i]); glRasterPos3f(-290, -170, 1.0); for (i=0; i < strlen(text29); i++) glutBitmapCharacter(GLUT_BITMAP_8_BY_13, text29[i]); } } } void davemenu1(int choice) { switch (choice) { case 1: /* spring choice */ dtype=1; dlevel=0; unlight(); display(); break; case 2: /* bouncing choice */ dtype=2; dlevel=0; springpos=0.0; unlight(); display(); break; /* case 3: dtype=3; davethrow(); break; case -1: exit(1); break; */ default: dtype=0; break; } } void davemenu2(int choice) { dlevel = choice; } void davelight() { GLfloat light_position[] = { 5.0, 10.0, 1.0, 0.0 }; glLightfv(GL_LIGHT0, GL_POSITION, light_position); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glDepthFunc(GL_LESS); glEnable(GL_DEPTH_TEST); } /* generic function to draw a spring */ void spring(int springlength, int springrad, int depth) { int i; float finangle = sprangle*2*3.14159/360.0; /*material properties of spring*/ GLfloat mat_specular[] = { 1.0, 1.0, 0.7, 1.0 }; GLfloat mat_shininess[] = { 80.0 }; GLfloat mat_diffuse[] = {0.5, 0.5, 0.5, 1.0 }; glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); glTranslatef(0, 0, depth); /*move down to right level*/ for (i=0; i springthick*springlength-2) { sprangle -=2.0; } else grow = 0; } else grow=0; spring(springlength, 20, 50); } /* show that different weights bounce differently */ void davebounce() { /* wall and floor */ GLfloat dwall_specular[] = { 1.0, 1.0, 0.7, 1.0 }; GLfloat dwall_shininess[] = { 20.0 }; GLfloat dwall_diffuse[] = {0.0, 0.0, 0.7, 1.0 }; /* red block */ GLfloat heavy_specular[] = { 1.0, 0.0, 0.0, 1.0 }; GLfloat heavy_shininess[] = { 20.0 }; GLfloat heavy_diffuse[] = {1.0, 0.0, 0.0, 1.0 }; /*golden sphere- emit light */ GLfloat light_specular[] = { 0.0, 1.0, 1.0, 1.0 }; GLfloat light_shininess[] = { 100.0 }; GLfloat light_diffuse[] = {0.9, 0.9, 0.0, 1.0 }; /* turns off light emission */ GLfloat no_emission[] = {0.0, 0.0, 0.0, 1.0 }; int springlength = 4; glPushMatrix(); if ((bounce < 4) && (dchoice !=0)) { if (grow == 0) /* in the shrinking phase */ { if (sprangle > springthick*springlength) { sprangle -=2.0; } else grow = 1; } if(grow == 1) /* in the growing phase */ { if (sprangle < 10) { sprangle +=2.0; } else { grow = 2; if (dchoice==1) vinit = vinit/1.3; else if (dchoice==2) vinit = vinit/1.7; springt=0.0; /*sets for next parabola*/ } } if(grow == 2 ) /*parabolic motion */ { if(springpos >= 0.0) { /* x = vo*t - 1/2*g*t^2 */ springpos = (vinit*springt) - (.5*9.81*(springt*springt)); springt+=.25; if (springpos < 0.0) /* if it goes below the ground */ springpos = -1.0; /* stop it */ } else { grow=0; springpos=0.0; bounce++; } } } spring(springlength, 15, 100); glPopMatrix(); glPushMatrix(); glMaterialfv(GL_FRONT, GL_DIFFUSE, dwall_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, dwall_specular); glMaterialfv(GL_FRONT, GL_SHININESS, dwall_shininess); glTranslatef(-100, 0, 50); glScalef(1.0, 1.0, 2.0); glutSolidCube(100.0); glTranslatef(100, 0, 50); glScalef(3.0, 1.0, 0.5); glutSolidCube(100.0); glPopMatrix(); glPushMatrix(); /* red cube */ glMaterialfv(GL_FRONT, GL_DIFFUSE, heavy_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, heavy_specular); glMaterialfv(GL_FRONT, GL_SHININESS, heavy_shininess); glTranslatef(-100.0, 0.0, -60.0); if (dchoice==2) { glTranslatef(95.0, 0.0, 100.0); if (grow==2) glTranslatef(0, 0, -springpos); else glTranslatef(0, 0, 46-(2*startpt)); } glutSolidCube(20.0); glPopMatrix(); glPushMatrix(); /* golden sphere */ glMaterialfv(GL_FRONT, GL_DIFFUSE, light_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, light_specular); glMaterialfv(GL_FRONT, GL_SHININESS, light_shininess); glMaterialfv(GL_FRONT, GL_EMISSION, light_diffuse); glTranslatef(-130.0, 0.0, -60.0); if (dchoice==1) { glTranslatef(125.0, 0.0, 100.0); if (grow==2) glTranslatef(0,0,-springpos); else glTranslatef(0,0, 49-(2*startpt)); } glutSolidSphere(10.0, 15, 15); glPopMatrix(); glMaterialfv(GL_FRONT, GL_EMISSION, no_emission); } void unlight(void) { glDisable(GL_LIGHTING); glDisable(GL_LIGHT0); } void untexture(void) { glDisable(GL_TEXTURE_GEN_S); glDisable(GL_TEXTURE_1D); } void mover() /*idle subroutine calls display*/ { /*only for dave's page */ if (((page_num == 3)||(page_num==0)) && (!turning)) { unlight(); display(); } } void quit(int id) { exit(1); } void main(int argc, char **argv) { int submenu1; glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH); glutInitWindowSize(800, 800); glutInitWindowPosition(0,0); glutCreateWindow(" prog4 "); init(); glutDisplayFunc(display); glutSpecialFunc(keys); glutMouseFunc(mouse); glutIdleFunc(mover); glutCreateMenu(sandimenu); glutAddMenuEntry("Beginner", 1); glutAddMenuEntry("Intermediate", 2); glutAddMenuEntry("Advanced",3); glutAttachMenu(GLUT_LEFT_BUTTON); glutCreateMenu(seema_menu); glutAddMenuEntry("Beginner", 1); glutAddMenuEntry("Intermediate", 2); glutAddMenuEntry("Advanced",3); glutAttachMenu(GLUT_LEFT_BUTTON); glutCreateMenu(seema_drop_menu); glutAddMenuEntry("Rock", 1); glutAddMenuEntry("Wood", 2); glutAttachMenu(GLUT_MIDDLE_BUTTON); /* submenu1 = glutCreateMenu(davemenu2); glutAddMenuEntry("Beginner", 1); glutAddMenuEntry("Advanced", 0);*/ glutCreateMenu(davemenu1); /* first submenu */ glutAddMenuEntry("Spring", 1); glutAddMenuEntry("Bounce", 2); /* glutAddSubMenu("Change Level", submenu1);*/ glutAddMenuEntry("Change Level", 0); glutChangeToSubMenu(3, "Change Level", 5); glutCreateMenu(davemenu2); glutAddMenuEntry("Beginner", 1); glutAddMenuEntry("Advanced", 2); glutAttachMenu(GLUT_LEFT_BUTTON); glutCreateMenu(quit); glutAddMenuEntry("Quit",1); glutAttachMenu(GLUT_RIGHT_BUTTON); glEnable(GL_DEPTH_TEST); glutMainLoop(); }