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3d:: 3d balls

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This commit is contained in:
Zeno Rogue 2019-04-23 10:41:24 +02:00
parent c10939fac6
commit 884ab0cd5f
1 changed files with 39 additions and 0 deletions
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39
3d-models.cpp
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@ -644,6 +644,41 @@ void animate_bird(hpcshape& orig, hpcshape animated[30], ld body) {
} }
} }
void balltriangle(hyperpoint a, hyperpoint b, hyperpoint c, ld rad, int lev) {
if(lev == 0) {
hpcpush(a);
hpcpush(b);
hpcpush(c);
}
else {
hyperpoint cx = rspintox(mid(a,b)) * xpush0(rad);
hyperpoint ax = rspintox(mid(b,c)) * xpush0(rad);
hyperpoint bx = rspintox(mid(c,a)) * xpush0(rad);
balltriangle(ax, bx, cx, rad, lev-1);
balltriangle(ax, bx, c , rad, lev-1);
balltriangle(ax, b , cx, rad, lev-1);
balltriangle(a , bx, cx, rad, lev-1);
}
}
void make_ball(hpcshape& sh, ld rad, int lev) {
bshape(sh, sh.prio);
sh.flags |= POLY_TRIANGLES;
hyperpoint tip = xpush0(rad);
hyperpoint atip = xpush0(-rad);
for(int i=0; i<5; i++) {
hyperpoint a = cspin(1, 2, (72 * i ) * degree) * spin(1) * tip;
hyperpoint b = cspin(1, 2, (72 * i-72) * degree) * spin(1) * tip;
hyperpoint c = cspin(1, 2, (72 * i+36) * degree) * spin(M_PI-1) * tip;
hyperpoint d = cspin(1, 2, (72 * i-36) * degree) * spin(M_PI-1) * tip;
balltriangle(tip, a, b, rad, lev);
balltriangle(a, b, c, rad, lev);
balltriangle(b, c, d, rad, lev);
balltriangle(c, d, atip, rad, lev);
}
add_texture(sh);
}
void make_3d_models() { void make_3d_models() {
if(DIM == 2) return; if(DIM == 2) return;
shcenter = C0; shcenter = C0;
@ -815,6 +850,10 @@ void make_3d_models() {
disable(shJiangShi); disable(shJiangShi);
make_head_only(); make_head_only();
make_ball(shDisk, orbsize*.2, 2);
make_ball(shHeptaMarker, zhexf*.2, 1);
make_ball(shSnowball, zhexf*.1, 0);
} }
#undef S #undef S