void rt_camera_setup(SceneHandle voidscene, flt zoom, flt aspectratio,
int antialiasing, int raydepth,
apivector camcent, apivector viewvec, apivector upvec) {
scenedef * scene = (scenedef *) voidscene;
cameradefault(&scene->camera);
rt_camera_zoom(voidscene, zoom);
rt_camera_position(voidscene, camcent, viewvec, upvec);
rt_aspectratio(voidscene, aspectratio);
rt_aa_maxsamples(voidscene, antialiasing);
rt_camera_raydepth(voidscene, raydepth);
}
/*
* main loop for creating animations by playing recorded camera fly-throughs
*/
static int animate_scene(argoptions opt, SceneHandle scene, int node) {
char outfilename[1000];
FILE * camfp;
dispHandle * dh = NULL;
if (node == 0)
dh = tachyon_display_create(scene);
/* if we have a camera file, then animate.. */
if ((camfp = fopen(opt.camfilename, "r")) != NULL) {
floatvec cv, cu, cc;
apivector cmv, cmu, cmc;
int frameno = 0;
float fps;
rt_timerhandle fpstimer;
rt_timerhandle animationtimer;
rt_set_ui_message(NULL);
rt_set_ui_progress(NULL);
if (node == 0)
printf("Running Camera File: %s\n", opt.camfilename);
fpstimer=rt_timer_create();
animationtimer=rt_timer_create();
rt_timer_start(animationtimer);
while (!feof(camfp)) {
fscanf(camfp, "%f %f %f %f %f %f %f %f %f",
&cv.x, &cv.y, &cv.z, &cu.x, &cu.y, &cu.z, &cc.x, &cc.y, &cc.z);
cmv.x = cv.x;
cmv.y = cv.y;
cmv.z = cv.z;
cmu.x = cu.x;
cmu.y = cu.y;
cmu.z = cu.z;
cmc.x = cc.x;
cmc.y = cc.y;
cmc.z = cc.z;
if (frameno != 0) {
rt_timer_stop(fpstimer);
fps = 1.0f / rt_timer_time(fpstimer);
} else {
fps = 0.0;
}
rt_timer_start(fpstimer);
outfilename[0] = '\0';
if (opt.nosave == 1) {
if (node == 0) {
printf("\rRendering Frame: %9d %10.4f FPS ", frameno, fps);
fflush(stdout);
}
}
else {
sprintf(outfilename, opt.outfilename, frameno);
if (node == 0) {
printf("\rRendering Frame to %s (%10.4f FPS) ", outfilename, fps);
fflush(stdout);
}
}
rt_outputfile(scene, outfilename);
rt_camera_position(scene, cmc, cmv, cmu);
rt_renderscene(scene);
if (dh != NULL)
tachyon_display_draw(dh);
frameno++;
}
rt_timer_stop(animationtimer);
fps = frameno / rt_timer_time(animationtimer);
if (node == 0) {
printf("\rCompleted animation of %d frames \n", frameno);
printf("Animation Time: %10.4f seconds (Averaged %7.4f FPS)\n",
rt_timer_time(animationtimer), fps);
}
rt_timer_destroy(fpstimer);
fclose(camfp);
} else {
if (node == 0) {
printf("Couldn't open camera file: %s\n", opt.camfilename);
printf("Aborting render.\n");
}
rt_deletescene(scene); /* free the scene */
rt_finalize(); /* close down the rendering library and MPI */
return -1;
}
if (node == 0) {
printf("\nFinished Running Camera.\n");
if (dh !=NULL)
tachyon_display_delete(dh);
}
rt_deletescene(scene); /* free the scene */
rt_finalize(); /* close down the rendering library and MPI */
return 0;
}
int tachyon_spaceball_update(sbHandle * bh, SceneHandle scene) {
int tx, ty, tz, rx, ry, rz, buttons;
float qq[4];
float xx[3]={1.0, 0.0, 0.0};
float yy[3]={0.0, 1.0, 0.0};
float zz[3]={0.0, 0.0, 1.0};
float m[4][4];
float t[3];
static float transdivisor = 5000.0;
static float angdivisor = 20000.0;
if (bh->sball == NULL)
return -1;
if (sball_getstatus(bh->sball, &tx, &ty, &tz, &rx, &ry, &rz, &buttons)) {
/* negate rotations given by spaceball */
rx = -rx;
ry = -ry;
rz = -rz;
if (buttons) {
if (buttons & SBALL_BUTTON_PICK) {
bh->curtrans[0] = 0.0;
bh->curtrans[1] = 0.0;
bh->curtrans[2] = 0.0;
trackball(bh->curquat, 0.0, 0.0, 0.0, 0.0);
transdivisor = 5000.0;
angdivisor = 20000.0;
bh->camviewvec = bh->orig_camviewvec;
bh->camupvec = bh->orig_camupvec;
bh->camcent = bh->orig_camcent;
}
if (buttons & SBALL_BUTTON_1) {
transdivisor /= 1.2;
angdivisor /= 1.2;
}
else if (buttons & SBALL_BUTTON_2) {
transdivisor *= 1.2;
angdivisor *= 1.2;
}
if (buttons & SBALL_BUTTON_3)
transdivisor /= 1.2;
else if (buttons & SBALL_BUTTON_4)
transdivisor *= 1.2;
if (buttons & SBALL_BUTTON_5)
angdivisor *= 1.2;
else if (buttons & SBALL_BUTTON_6)
angdivisor /= 1.2;
if (buttons & SBALL_BUTTON_7) {
return 1; /* quit the fly through */
}
} /* end of button handling */
t[0] = tx / transdivisor;
t[1] = ty / transdivisor;
t[2] = tz / transdivisor;
/*
* convert rotations and translations from the
* spaceball's coordinate frame into the camera's frame.
*/
bh->newtrans[0] =
t[0] * bh->orig_camrightvec.x +
t[1] * bh->orig_camupvec.x +
t[2] * bh->orig_camviewvec.x;
bh->newtrans[1] =
t[0] * bh->orig_camrightvec.y +
t[1] * bh->orig_camupvec.y +
t[2] * bh->orig_camviewvec.y;
bh->newtrans[2] =
t[0] * bh->orig_camrightvec.z +
t[1] * bh->orig_camupvec.z +
t[2] * bh->orig_camviewvec.z;
/*
* rotate around camera's coordinate frame
*/
xx[0] = bh->orig_camrightvec.x;
xx[1] = bh->orig_camrightvec.y;
xx[2] = bh->orig_camrightvec.z;
yy[0] = bh->orig_camupvec.x;
yy[1] = bh->orig_camupvec.y;
yy[2] = bh->orig_camupvec.z;
zz[0] = bh->orig_camviewvec.x;
zz[1] = bh->orig_camviewvec.y;
zz[2] = bh->orig_camviewvec.z;
/* do rotations */
axis_to_quat(xx, rx / angdivisor, bh->lastquat);
axis_to_quat(yy, ry / angdivisor, qq);
add_quats(qq, bh->lastquat, bh->lastquat);
axis_to_quat(zz, rz / angdivisor, qq);
add_quats(qq, bh->lastquat, bh->lastquat);
add_quats(bh->lastquat, bh->curquat, bh->curquat);
}
else {
usleep(5); /* if no movement then sleep for a tiny bit.. */
}
build_rotmatrix(m, bh->curquat);
/*
* translate along the new axes
*/
t[0] = m[0][0] * bh->newtrans[0] + m[0][1] * bh->newtrans[1] + m[0][2] * bh->newtrans[2];
t[1] = m[1][0] * bh->newtrans[0] + m[1][1] * bh->newtrans[1] + m[1][2] * bh->newtrans[2];
t[2] = m[2][0] * bh->newtrans[0] + m[2][1] * bh->newtrans[1] + m[2][2] * bh->newtrans[2];
bh->camcent.x += t[0];
bh->camcent.y += t[1];
bh->camcent.z += t[2];
/*
* rotate view system with spaceball
*/
bh->camviewvec.x = m[0][0] * bh->orig_camviewvec.x + m[0][1] * bh->orig_camviewvec.y + m[0][2] * bh->orig_camviewvec.z;
bh->camviewvec.y = m[1][0] * bh->orig_camviewvec.x + m[1][1] * bh->orig_camviewvec.y + m[1][2] * bh->orig_camviewvec.z;
bh->camviewvec.z = m[2][0] * bh->orig_camviewvec.x + m[2][1] * bh->orig_camviewvec.y + m[2][2] * bh->orig_camviewvec.z;
bh->camupvec.x = m[0][0] * bh->orig_camupvec.x + m[0][1] * bh->orig_camupvec.y + m[0][2] * bh->orig_camupvec.z;
bh->camupvec.y = m[1][0] * bh->orig_camupvec.x + m[1][1] * bh->orig_camupvec.y + m[1][2] * bh->orig_camupvec.z;
bh->camupvec.z = m[2][0] * bh->orig_camupvec.x + m[2][1] * bh->orig_camupvec.y + m[2][2] * bh->orig_camupvec.z;
/*
* update camera parameters before we render again
*/
rt_camera_position(scene, bh->camcent, bh->camviewvec, bh->camupvec);
return 0;
}
