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i have two program that can run..but i can't combine it..
for your information i still studying..
the first program is:
#include <stdlib.h>
#include <gl glut.h="">
GLfloat vertices [][3] = {{-0.3, -0.3, 0.3}, {-0.23,0.3,0.3} ,
{0.3,0.3,0.3}, {0.3,-0.3,0.3}, {-0.3,-0.3,-0.3} ,
{-0.3,0.3,-0.3}, {0.3,0.3,-0.3},{0.3,-0.3,-0.3}};
GLfloat colors[][3] = {
{1.0,0.0,0.0},{0.0,1.0,1.0},
{1.0,1.0,0.0}, {0.0,1.0,0.0},
{0.0,0.0,1.0}, {1.0,0.0,1.0},
{0.0,0.0,0.0}, {1.0,1.0,1.0}};
void polygon (int a, int b, int c, int d)
{
glBegin(GL_POLYGON);
glColor3fv(colors[a]);
glTexCoord2f(0.0,0.0);
glVertex3fv(vertices[a]);
glColor3fv(colors[b]);
glTexCoord2f(0.0,1.0);
glVertex3fv(vertices[b]);
glColor3fv(colors[c]);
glTexCoord2f(1.0,1.0);
glVertex3fv(vertices[c]);
glColor3fv(colors[d]);
glTexCoord2f(1.0,0.0);
glVertex3fv(vertices[d]);
glEnd();
}
void colorcube()
{
polygon(0,3,2,1);
polygon(2,3,7,6);
polygon(3,0,4,7);
polygon(1,2,6,5);
polygon(4,5,6,7);
polygon(5,4,0,1);
}
static GLfloat theta[]={0.0,0.0,0.0};
static GLint axis = 2 ;
void display (void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glRotatef(theta[0],1.0,0.0,0.0);
glRotatef(theta[1],0.0,1.0,0.0);
glRotatef(theta[2],0.0,0.0,1.0);
colorcube();
glutSwapBuffers();
}
void spinCube()
{
theta [axis] += 5.0; //speed for cube
if (theta[axis] > 360.0) theta[axis] -= 360.0;
glutPostRedisplay();
}
void mouse (int btn, int state, int x, int y)
{
if(btn == GLUT_LEFT_BUTTON && state == GLUT_DOWN)
axis = 0;
if (btn == GLUT_MIDDLE_BUTTON && state == GLUT_DOWN)
axis = 1;
if (btn == GLUT_RIGHT_BUTTON && state == GLUT_DOWN)
axis = 2;
}
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);
}
int main(int argc, char **argv)
{
GLubyte image [64][64][3];
int i,j,r,c;
for (i =0; i<64; i++)
{
for (j=0; j<64; j++)
{
c = (((i&0x8) == 0)^((j&0x8)==0))*255;
image[i][j][0] = (GLubyte) c;
image[i][j][1] = (GLubyte) c;
image[i][j][2] = (GLubyte) c;
}
}
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(500,500);
glutCreateWindow("color cube");
glutReshapeFunc(myReshape);
glutDisplayFunc(display);
glutIdleFunc(spinCube);
glutMouseFunc(mouse);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,64,64,0,GL_RGB,GL_UNSIGNED_BYTE, image);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glClearColor(1.0,0.5,1.0,1.0);
glColor3f(1.0,1.0,1.0);
glutMainLoop();
}
and the second program is:
/* field.c - by Tom McReynolds, SGI */
/* Using the accumulation buffer for depth of field (camera focus blur). */
#include <gl glut.h="">
#include <stdlib.h>
#include <stdio.h>
const GLdouble FRUSTDIM = 100.f;
const GLdouble FRUSTNEAR = 320.f;
const GLdouble FRUSTFAR = 660.f;
/*
** Create a single component texture map
*/
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;
}
//enum {SPHERE = 1, CONE};
void
render(void)
{
/* material properties for objects in scene */
static GLfloat wall_mat[] = {1.f, 1.f, 1.f, 1.f};
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
/*
** Note: wall verticies are ordered so they are all front facing
** this lets me do back face culling to speed things up.
*/
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, wall_mat);
/* floor */
/* make the floor textured */
glEnable(GL_TEXTURE_2D);
/*
** Since we want to turn texturing on for floor only, we have to
** make floor a separate glBegin()/glEnd() sequence. You can't
** turn texturing on and off between begin and end calls
*/
glBegin(GL_QUADS);
glNormal3f(0.f, 1.f, 0.f);
glTexCoord2i(0, 0);
glVertex3f(-100.f, -100.f, -320.f);
glTexCoord2i(1, 0);
glVertex3f( 100.f, -100.f, -320.f);
glTexCoord2i(1, 1);
glVertex3f( 100.f, -100.f, -640.f);
glTexCoord2i(0, 1);
glVertex3f(-100.f, -100.f, -640.f);
glEnd();
glDisable(GL_TEXTURE_2D);
/* walls */
glBegin(GL_QUADS);
/* left wall */
glNormal3f(1.f, 0.f, 0.f);
glVertex3f(-100.f, -100.f, -320.f);
glVertex3f(-100.f, -100.f, -640.f);
glVertex3f(-100.f, 100.f, -640.f);
glVertex3f(-100.f, 100.f, -320.f);
/* right wall */
glNormal3f(-1.f, 0.f, 0.f);
glVertex3f( 100.f, -100.f, -320.f);
glVertex3f( 100.f, 100.f, -320.f);
glVertex3f( 100.f, 100.f, -640.f);
glVertex3f( 100.f, -100.f, -640.f);
/* ceiling */
glNormal3f(0.f, -1.f, 0.f);
glVertex3f(-100.f, 100.f, -320.f);
glVertex3f(-100.f, 100.f, -640.f);
glVertex3f( 100.f, 100.f, -640.f);
glVertex3f( 100.f, 100.f, -320.f);
/* back wall */
glNormal3f(0.f, 0.f, 1.f);
glVertex3f(-100.f, -100.f, -640.f);
glVertex3f( 100.f, -100.f, -640.f);
glVertex3f( 100.f, 100.f, -640.f);
glVertex3f(-100.f, 100.f, -640.f);
glEnd();
glPushMatrix();
glTranslatef(-80.f, -60.f, -420.f);
// glCallList(SPHERE);
glPopMatrix();
glPushMatrix();
glTranslatef(-20.f, -80.f, -600.f);
// glCallList(CONE);
glPopMatrix();
if(glGetError()) /* to catch programming errors; should never happen */
printf("Oops! I screwed up my OpenGL calls somewhere\n");
glFlush(); /* high end machines may need this */
}
enum {NONE, FIELD};
int rendermode = NONE;
void
menu(int selection)
{
rendermode = selection;
glutPostRedisplay();
}
GLdouble focus = 420.;
/* Called when window needs to be redrawn */
void redraw(void)
{
int i, j;
int min, max;
int count;
GLfloat scale, dx, dy;
switch(rendermode) {
case NONE:
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-FRUSTDIM, FRUSTDIM, -FRUSTDIM, FRUSTDIM, FRUSTNEAR, FRUSTFAR);
glMatrixMode(GL_MODELVIEW);
render();
break;
case FIELD:
min = -2;
max = -min + 1;
count = -2 * min + 1;
count *= count;
scale = 2.f;
glClear(GL_ACCUM_BUFFER_BIT);
for(j = min; j < max; j++) {
for(i = min; i < max; i++) {
dx = scale * i * FRUSTNEAR/focus;
dy = scale * j * FRUSTNEAR/focus;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-FRUSTDIM + dx,
FRUSTDIM + dx,
-FRUSTDIM + dy,
FRUSTDIM + dy,
FRUSTNEAR,
FRUSTFAR);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(scale * i, scale * j, 0.f);
render();
glAccum(GL_ACCUM, 1.f/count);
}
}
glAccum(GL_RETURN, 1.f);
break;
}
glutSwapBuffers();
}
/* ARGSUSED1 */
void key(unsigned char key, int x, int y)
{
if(key == '\033')
exit(0);
}
const int TEXDIM = 256;
/* Parse arguments, and set up interface between OpenGL and window system */
int
main(int argc, char *argv[])
{
GLfloat *tex;
static GLfloat lightpos[] = {50.f, 50.f, -320.f, 1.f};
static GLfloat sphere_mat[] = {1.f, .5f, 0.f, 1.f};
static GLfloat cone_mat[] = {0.f, .5f, 1.f, 1.f};
GLUquadricObj *sphere, *cone, *base;
glutInit(&argc, argv);
glutInitWindowSize(512, 512);
glutInitDisplayMode(GLUT_RGBA|GLUT_DEPTH|GLUT_ACCUM|GLUT_DOUBLE);
(void)glutCreateWindow("depth of field");
glutDisplayFunc(redraw);
glutKeyboardFunc(key);
glutCreateMenu(menu);
glutAddMenuEntry("Normal", NONE);
glutAddMenuEntry("Depth of Field", FIELD);
glutAttachMenu(GLUT_RIGHT_BUTTON);
/* turn on features */
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
/* place light 0 in the right place */
glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
/* remove back faces to speed things up */
glCullFace(GL_BACK);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
// glNewList(SPHERE, GL_COMPILE);
/* make display lists for sphere and cone; for efficiency */
sphere = gluNewQuadric();
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, sphere_mat);
gluSphere(sphere, 20.f, 20, 20);
gluDeleteQuadric(sphere);
glEndList();
// glNewList(CONE, GL_COMPILE);
cone = gluNewQuadric();
base = gluNewQuadric();
glRotatef(-90.f, 1.f, 0.f, 0.f);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, cone_mat);
gluDisk(base, 0., 20., 20, 1);
gluCylinder(cone, 20., 0., 60., 20, 20);
gluDeleteQuadric(cone);
gluDeleteQuadric(base);
glEndList();
/* load pattern for current 2d texture */
tex = make_texture(TEXDIM, TEXDIM);
glTexImage2D(GL_TEXTURE_2D, 0, 1, TEXDIM, TEXDIM, 0, GL_RED, GL_FLOAT, tex);
free(tex);
glutMainLoop();
return 0; /* ANSI C requires main to return int. */
}
please help..thanks
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