sky now interacts better with stars and other high objects

This commit is contained in:
Zeno Rogue 2021-07-30 17:07:07 +02:00
parent 3cabddeb65
commit c9a1e52aaf
1 changed files with 63 additions and 14 deletions

77
sky.cpp
View File

@ -137,20 +137,34 @@ void compute_skyvertices(const vector<sky_item>& sky) {
for(int i=0; i<c->type; i++) {
static const int prec = 2;
if(1) {
cellwalker cw0(c, i);
cellwalker cw2 = cw0;
cw2--; cw2 += wstep;
if(!colors.count(cw2.at)) {
this_poly.clear();
transmatrix T1 = unshift(si.T);
transmatrix T1 = Id;
transmatrix T2 = unshift(si.T);
auto cw = cw0;
while(colors.count(cw.at)) {
auto& co = colors[cw.at];
this_poly.emplace_back(T1 * skypoint, co.first);
this_poly.emplace_back(T1 * hellpoint, co.second);
T1 = T1 * currentmap->adj(cw.at, cw.spin);
auto co = at_or_null(colors, cw.at);
while(co) {
this_poly.emplace_back(T2 * T1 * skypoint, co->first);
this_poly.emplace_back(T2 * T1 * hellpoint, co->second);
auto cw1 = cw;
cw += wstep; cw++;
auto co1 = at_or_null(colors, cw.at);
if(!co1) break;
transmatrix A = currentmap->adj(cw1.at, cw1.spin);
hyperpoint a = tC0(A);
for(int i=1; i<prec; i++) {
hyperpoint h = T1 * normalize(C0 * (prec-i) + a * i);
this_poly.emplace_back(T2 * orthogonal_move(h, cgi.SKY), gradient(co->first, co1->first, 0, i, prec));
this_poly.emplace_back(T2 * orthogonal_move(h, -cgi.SKY), gradient(co->second, co1->second, 0, i, prec));
}
T1 = T1 * A;
co = co1;
}
int k = isize(this_poly);
@ -175,21 +189,56 @@ void compute_skyvertices(const vector<sky_item>& sky) {
}
while(cw != cw0);
this_poly.clear();
vector<hyperpoint> vertices;
vector<color_t> vcolors;
transmatrix T1 = unshift(si.T);
transmatrix T1 = Id;
do {
this_poly.emplace_back(T1 * skypoint, colors[cw.at].first);
vertices.push_back(tC0(T1));
vcolors.push_back(colors[cw.at].first);
T1 = T1 * currentmap->adj(cw.at, cw.spin);
cw += wstep; cw++;
}
while(cw != cw0);
int k = isize(vertices);
int k = isize(this_poly);
for(int j=2; j<k; j++) {
skyvertices.push_back(this_poly[0]);
skyvertices.push_back(this_poly[j-1]);
skyvertices.push_back(this_poly[j]);
println(hlog, "bb ", k);
color_t ccolor;
for(int i=0; i<k; i++) ccolor = gradient(ccolor, vcolors[i], 0, 1, i+1);
println(hlog, "vertices = ", vertices);
println(hlog, "ccolor = ", ccolor);
hyperpoint ctr = Hypc;
for(auto& p: vertices) ctr = ctr + p;
normalize(ctr);
for(int j=0; j<k; j++) {
int j1 = (j+1) % k;
glhr::colored_vertex cv[prec+1][prec+1];
for(int x=0; x<=prec; x++) for(int y=0; y<=prec; y++) if(x+y <= prec) {
hyperpoint h = ctr * (prec-x-y) + vertices[j] * x + vertices[j1] * y;
h = normalize(h);
color_t co = gradient(ccolor, gradient(vcolors[j], vcolors[j1], 0, y, x+y), prec, x+y, 0);
// co = (hrand(0x1000000) << 8) | 0xFF;
// co = minecolors[(x+2*y) % 7] << 8 | 0xFF;
h = unshift(si.T) * orthogonal_move(h, cgi.SKY);
cv[y][x] = {h, co};
}
for(int x=0; x<=prec; x++)
for(int y=0; y<=prec; y++) if(x+y < prec) {
skyvertices.emplace_back(cv[y][x]);
skyvertices.emplace_back(cv[y+1][x]);
skyvertices.emplace_back(cv[y][x+1]);
if(true) if(x+y < prec-1) {
skyvertices.emplace_back(cv[y+1][x+1]);
skyvertices.emplace_back(cv[y][x+1]);
skyvertices.emplace_back(cv[y+1][x]);
}
}
}
}