/* dodecahedron:
*
* Draws an dodecahedron with center at 0.0. The radius
* is sqrt(3).
*/
static void dodecahedron(GLdouble center[3], GLdouble sc, GLenum type)
{
static int inited = 0;
if ( inited == 0) {
inited = 1;
initdodec();
}
m_pushmatrix();
m_translate(center[0], center[1], center[2]);
m_scale(sc, sc, sc);
pentagon(0, 1, 9, 16, 5, type);
pentagon(1, 0, 3, 18, 7, type);
pentagon(1, 7, 11, 10, 9, type);
pentagon(11, 7, 18, 19, 6, type);
pentagon(8, 17, 16, 9, 10, type);
pentagon(2, 14, 15, 6, 19, type);
pentagon(2, 13, 12, 4, 14, type);
pentagon(2, 19, 18, 3, 13, type);
pentagon(3, 0, 5, 12, 13, type);
pentagon(6, 15, 8, 10, 11, type);
pentagon(4, 17, 8, 15, 14, type);
pentagon(4, 12, 5, 16, 17, type);
m_popmatrix();
}
void sm_frame(sm_t *sm,int from,int to,float frame) {
int i,frame0,frame1;
if(from == -1) from = 0;
if(to == -1) to = sm->num_frame;
frame0 = (int)frame;
frame -= frame0;
frame0 += from;
if(frame0 >= to) frame0 = ((frame0 - from) % (to - from)) + from;
frame1 = frame0 + 1;
if(frame1 >= to) frame1 = from;
for(i = 0; i < sm->num_bone; i++) {
float m0[16],m1[16];
float xyz0[3],xyz1[3],xyz[3],rot[4];
v_scale(sm->frame[frame0][i].xyz,1.0 - frame,xyz0);
v_scale(sm->frame[frame1][i].xyz,frame,xyz1);
v_add(xyz0,xyz1,xyz);
q_slerp(sm->frame[frame0][i].rot,sm->frame[frame1][i].rot,frame,rot);
m_translate(xyz,m0);
q_to_matrix(rot,m1);
m_multiply(m0,m1,sm->bone[i].matrix);
}
for(i = 0; i < sm->num_surface; i++) {
int j;
sm_surface_t *s = sm->surface[i];
for(j = 0; j < s->num_vertex; j++) {
int k;
v_set(0,0,0,s->vertex[j].xyz);
v_set(0,0,0,s->vertex[j].normal);
for(k = 0; k < s->vertex[j].num_weight; k++) {
float v[3];
sm_weight_t *w = &s->vertex[j].weight[k];
v_transform(w->xyz,sm->bone[w->bone].matrix,v);
v_scale(v,w->weight,v);
v_add(s->vertex[j].xyz,v,s->vertex[j].xyz);
v_transform_normal(w->normal,sm->bone[w->bone].matrix,v);
v_scale(v,w->weight,v);
v_add(s->vertex[j].normal,v,s->vertex[j].normal);
}
}
}
}
