轉八轉八轉

#include <GL/glut.h>

float a=0;

float angle[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float angleOld[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

float angleNew[20]={90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glTranslatef(angle[3], angle[4], angle[5]);

glPushMatrix();

glColor3f(1,1,0);

glRotatef(angle[0],0,0,1);

glutSolidTeapot(0.3);

glPopMatrix();

glPushMatrix();

glTranslatef(0.5,0,0);

glRotatef(angle[1],0,0,1);

glutSolidTeapot(0.3);

glPopMatrix();

glPopMatrix();

glutSwapBuffers();  

}

void readNext()

{

a+=0.1;

for(int i=0;i<20;i++) angle[i] = angleOld[i] * (1-a) + angleNew[i] * a;

}

void timer(int t)

{

glutTimerFunc(50, timer, 0);

readNext();

glutPostRedisplay();

}

void keyboard(unsigned char key, int x, int y)

{

if(key=='r'){

readNext();

}

else if(key='p'){

glutTimerFunc(0, timer, 0);

}

glutPostRedisplay();

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("week15");

glutKeyboardFunc(keyboard);

glutDisplayFunc(display);

glutMainLoop();

}

______________________________________________________________________

#include <stdio.h>
#include <GL/glut.h>
float a=0;
float angle[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float angleOld[20]={0,90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
float angleNew[20]={90,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

int angleID=0;
FILE *fout=NULL, *fin=NULL;

void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(angle[3], angle[4], angle[5]);
glPushMatrix();
glColor3f(1,1,0);
glRotatef(angle[0],0,0,1);
glutSolidTeapot(0.3);
glPopMatrix();
glPushMatrix();
glTranslatef(0.5,0,0);
glRotatef(angle[1],0,0,1);
glutSolidTeapot(0.3);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}

void readNext()
{
if(fin==NULL) fin=fopen("animation.txt","r");
a+=0.05;
for(int i=0;i<20;i++) angle[i] = angleOld[i] * (1-a) + angleNew[i] * a;
if(a>=1.0)
{
a=0.0;
for(int i=0;i<20;i++){
angleOld[i] = angleNew[i];
fscanf(fin, "%f", &angleNew[i]);
}
}
}

void timer(int t)
{
glutTimerFunc(50, timer, 0);
readNext();
glutPostRedisplay();
}

int oldX=0, oldY=0;
void mouse(int button, int state, int x, int y)
{
oldX=x; oldY=y;
}

void motion(int x, int y)
{
angle[angleID]+=(x-oldX);
oldX = x;
glutPostRedisplay();
}

void keyboard(unsigned char key, int x, int y)
{

if(key=='0') angleID=0;
if(key=='1') angleID=1;
if(key=='2') angleID=2;
if(key=='3') angleID=3;
if(key=='s'){
for(int i=0;i<20;i++){
printf("%f", angle[i]);
fprintf(fout, "%f", angle[i]);
}
printf("\n");
fprintf(fout, "\n");
}

if(key=='r'){
readNext();
}
else if(key='p'){
glutTimerFunc(0, timer, 0);
}
glutPostRedisplay();
}

int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week15");

glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}