void mainloop()
{
const int MAXOBJ = 30;
AniObj obj[MAXOBJ]; //定义对象数组
int n;
for (n = 0; n < MAXOBJ; ++n)
{
initobj(&obj[n]); //初始化
}
for ( ; is_run(); delay_fps(60) )
{
for (n = 0; n < MAXOBJ; ++n)
{
updateobj(&obj[n]); //更新位置
}
cleardevice();
for (n = 0; n < MAXOBJ; ++n)
{
drawobj(&obj[n]); //绘画
}
}
for (n = 0; n < MAXOBJ; ++n)
{
releaseobj(&obj[n]); //释放
}
}
static void
draw(void)
{
static char frbuf[80] = "";
dojoy();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
if (fog)
glEnable(GL_FOG);
else
glDisable(GL_FOG);
glPushMatrix();
calcposobs();
gluLookAt(obs[0], obs[1], obs[2],
obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
0.0, 0.0, 1.0);
drawbase();
drawobj();
glColor3f(1.0, 1.0, 1.0);
glDisable(GL_TEXTURE_2D);
glPushMatrix();
glTranslatef(lightpos[0], lightpos[1], lightpos[2]);
glCallList(lightdlist);
glPopMatrix();
glPopMatrix();
glDisable(GL_DEPTH_TEST);
glDisable(GL_FOG);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glColor3f(0.0f, 0.3f, 1.0f);
if (showcheckmap) {
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, checkid);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBegin(GL_QUADS);
glTexCoord2f(1.0f, 0.0f);
glVertex2i(10, 30);
glTexCoord2f(1.0f, 1.0f);
glVertex2i(10 + 90, 30);
glTexCoord2f(0.0f, 1.0f);
glVertex2i(10 + 90, 30 + 90);
glTexCoord2f(0.0f, 0.0f);
glVertex2i(10, 30 + 90);
glEnd();
glDisable(GL_TEXTURE_2D);
glBegin(GL_LINE_LOOP);
glVertex2i(10, 30);
glVertex2i(10 + 90, 30);
glVertex2i(10 + 90, 30 + 90);
glVertex2i(10, 30 + 90);
glEnd();
glRasterPos2i(105, 65);
printstring(GLUT_BITMAP_HELVETICA_18, "Plane Texture Map");
}
if (showreflectmap) {
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, reflectid);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBegin(GL_QUADS);
glTexCoord2f(1.0f, 0.0f);
glVertex2i(540, 30);
glTexCoord2f(1.0f, 1.0f);
glVertex2i(540 + 90, 30);
glTexCoord2f(0.0f, 1.0f);
glVertex2i(540 + 90, 30 + 90);
glTexCoord2f(0.0f, 0.0f);
glVertex2i(540, 30 + 90);
glEnd();
glDisable(GL_TEXTURE_2D);
glBegin(GL_LINE_LOOP);
glVertex2i(540, 30);
glVertex2i(540 + 90, 30);
glVertex2i(540 + 90, 30 + 90);
glVertex2i(540, 30 + 90);
glEnd();
glRasterPos2i(360, 65);
printstring(GLUT_BITMAP_HELVETICA_18, "Sphere Texture Map");
}
glDisable(GL_TEXTURE_2D);
glRasterPos2i(10, 10);
printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
glRasterPos2i(360, 470);
printstring(GLUT_BITMAP_HELVETICA_10,
"Ray V1.0 Written by David Bucciarelli ([email protected])");
if (help)
printhelp();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
updatemaps();
glutSwapBuffers();
Frames++;
{
GLint t = glutGet(GLUT_ELAPSED_TIME);
if (t - T0 >= 2000) {
GLfloat seconds = (t - T0) / 1000.0;
GLfloat fps = Frames / seconds;
sprintf(frbuf, "Frame rate: %f", fps);
T0 = t;
Frames = 0;
}
}
}
