vec3_t anm_get_node_scaling(struct anm_node *node, anm_time_t tm)
{
vec3_t v;
anm_time_t tm0 = animation_time(node, tm, 0);
struct anm_animation *anim0 = anm_get_active_animation(node, 0);
struct anm_animation *anim1 = anm_get_active_animation(node, 1);
if(!anim0) {
return v3_cons(1, 1, 1);
}
v.x = anm_get_value(anim0->tracks + ANM_TRACK_SCL_X, tm0);
v.y = anm_get_value(anim0->tracks + ANM_TRACK_SCL_Y, tm0);
v.z = anm_get_value(anim0->tracks + ANM_TRACK_SCL_Z, tm0);
if(anim1) {
vec3_t v1;
anm_time_t tm1 = animation_time(node, tm, 1);
v1.x = anm_get_value(anim1->tracks + ANM_TRACK_SCL_X, tm1);
v1.y = anm_get_value(anim1->tracks + ANM_TRACK_SCL_Y, tm1);
v1.z = anm_get_value(anim1->tracks + ANM_TRACK_SCL_Z, tm1);
v.x = v.x + (v1.x - v.x) * node->cur_mix;
v.y = v.y + (v1.y - v.y) * node->cur_mix;
v.z = v.z + (v1.z - v.z) * node->cur_mix;
}
return v;
}
void sbbut(int bn, int state)
{
if(state == GLUT_DOWN) {
pos = v3_cons(0, 0, -6);
rot = quat_cons(1, 0, 0, 0);
glutPostRedisplay();
}
}
scalar_t noise3(scalar_t x, scalar_t y, scalar_t z)
{
int i, j;
int bx0, bx1, by0, by1, bz0, bz1;
int b00, b10, b01, b11;
scalar_t rx0, rx1, ry0, ry1, rz0, rz1;
scalar_t sx, sy, sz;
scalar_t u, v, a, b, c, d;
if(!tables_valid) {
init_noise();
tables_valid = 1;
}
setup(x, bx0, bx1, rx0, rx1);
setup(y, by0, by1, ry0, ry1);
setup(z, bz0, bz1, rz0, rz1);
i = perm[bx0];
j = perm[bx1];
b00 = perm[i + by0];
b10 = perm[j + by0];
b01 = perm[i + by1];
b11 = perm[j + by1];
/* calculate hermite interpolating factors */
sx = s_curve(rx0);
sy = s_curve(ry0);
sz = s_curve(rz0);
/* interpolate along the top slice of the cell */
u = v3_dot(grad3[b00 + bz0], v3_cons(rx0, ry0, rz0));
v = v3_dot(grad3[b10 + bz0], v3_cons(rx1, ry0, rz0));
a = lerp(u, v, sx);
u = v3_dot(grad3[b01 + bz0], v3_cons(rx0, ry1, rz0));
v = v3_dot(grad3[b11 + bz0], v3_cons(rx1, ry1, rz0));
b = lerp(u, v, sx);
c = lerp(a, b, sy);
/* interpolate along the bottom slice of the cell */
u = v3_dot(grad3[b00 + bz0], v3_cons(rx0, ry0, rz1));
v = v3_dot(grad3[b10 + bz0], v3_cons(rx1, ry0, rz1));
a = lerp(u, v, sx);
u = v3_dot(grad3[b01 + bz0], v3_cons(rx0, ry1, rz1));
v = v3_dot(grad3[b11 + bz0], v3_cons(rx1, ry1, rz1));
b = lerp(u, v, sx);
d = lerp(a, b, sy);
/* interpolate between slices */
return lerp(c, d, sz);
}
void keyb(unsigned char key, int x, int y)
{
switch(key) {
case 'q':
case 'Q':
case 27:
exit(0);
case ' ':
/* reset initial view */
pos = v3_cons(0, 0, -6);
rot = quat_cons(1, 0, 0, 0);
glutPostRedisplay();
default:
break;
}
}