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rogueviz:: objmodels:: OO design of the model class

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This commit is contained in:
Zeno Rogue
2023-02-15 14:49:53 +01:00
parent f252456578
commit c53972c4b0
4 changed files with 101 additions and 64 deletions
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98
rogueviz/objmodels.cpp
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@@ -21,8 +21,6 @@ bool model::available() {
return false;
}
bool root = false;
string ignore_mtlname = "XXX";
void model::load_obj(model_data& md) {
@@ -34,7 +32,7 @@ void model::load_obj(model_data& md) {
if(!fs.f)
throw hr_exception("failed to open model file: " + path + fname);
preparer();
prepare();
vector<hyperpoint> vertices;
vector<hyperpoint> normals;
@@ -73,9 +71,7 @@ void model::load_obj(model_data& md) {
if(s == "Kd") {
ld a, b, c;
scan(fsm, a, b, c);
part(nextcol, 3) = root ? sqrt(a) * 255.99 : a * 319.99;
part(nextcol, 2) = root ? sqrt(b) * 255.99 : b * 319.99;
part(nextcol, 1) = root ? sqrt(c) * 255.99 : c * 319.99;
nextcol = read_color(a, b, c);
}
if(s == "newmtl") {
emit_material();
@@ -208,44 +204,8 @@ void model::load_obj(model_data& md) {
for(auto& h: hys)
h -= ctr1;
}
hyperpoint norm = (hys[1] - hys[0]) ^ (hys[2] - hys[0]);
norm /= hypot_d(3, norm);
ld y = .5 + (.2 * norm[0] + .16 * norm[1] + .14 * norm[2]);
glvertex shade = glhr::makevertex(0, y, 0);
glvertex shadecol = glhr::makevertex(y, y, y);
auto n0 = tf(hys[0]);
auto n1 = tf(hys[1]);
auto n2 = tf(hys[2]);
auto mi = min(n0.first, min(n1.first, n2.first));
auto ma = max(n0.first, max(n1.first, n2.first));
if(ma - mi > 1) continue;
int parts = sd(hys);
auto tri = [&] (int a, int b) {
cgi.hpcpush(tf(hys[0] + (hys[1] - hys[0]) * a / parts + (hys[2] - hys[0]) * b / parts).second);
// cgi.hpcpush(tf(tot[0] + (tot[1] - tot[0]) * a / parts + (tot[2] - tot[0]) * b / parts).second);
if(textured) {
co->tv.tvertices.push_back(glhr::pointtogl(tot[0] + (tot[1] - tot[0]) * a / parts + (tot[2] - tot[0]) * b / parts));
co->tv.colors.push_back(shadecol);
}
else {
co->tv.tvertices.push_back(shade);
}
};
for(int a=0; a<parts; a++)
for(int b=0; b<parts-a; b++) {
tri(a, b);
tri(a+1, b);
tri(a, b+1);
if(a+b < parts-1) {
tri(a, b+1);
tri(a+1, b);
tri(a+1, b+1);
}
}
process_triangle(hys, tot, textured, co);
while(among(peek(fs), ' ', '\r', '\n')) scan(fs, bar);
if(isdigit(peek(fs))) { vis[1] = vis[2]; goto next_triangle; }
@@ -271,6 +231,56 @@ void model::load_obj(model_data& md) {
cgi.extra_vertices();
}
hyperpoint model::transform(hyperpoint h) { return direct_exp(h); }
int model::subdivision(vector<hyperpoint>& hys) {
if(euclid) return 1;
ld maxlen = prec * max(hypot_d(3, hys[1] - hys[0]), max(hypot_d(3, hys[2] - hys[0]), hypot_d(3, hys[2] - hys[1])));
return int(ceil(maxlen));
}
color_t model::read_color(ld a, ld b, ld c) {
color_t nextcol = 0xFFFFFFFF;
part(nextcol, 3) = a * 255.99;
part(nextcol, 2) = b * 255.99;
part(nextcol, 1) = c * 255.99;
return nextcol;
}
void model::process_triangle(vector<hyperpoint>& hys, vector<hyperpoint>& tot, bool textured, object *co) {
hyperpoint norm = (hys[1] - hys[0]) ^ (hys[2] - hys[0]);
norm /= hypot_d(3, norm);
ld y = .5 + (.2 * norm[0] + .16 * norm[1] + .14 * norm[2]);
glvertex shade = glhr::makevertex(0, y, 0);
glvertex shadecol = glhr::makevertex(y, y, y);
int parts = subdivision(hys);
auto tri = [&] (int a, int b) {
cgi.hpcpush(transform(hys[0] + (hys[1] - hys[0]) * a / parts + (hys[2] - hys[0]) * b / parts));
// cgi.hpcpush(tf(tot[0] + (tot[1] - tot[0]) * a / parts + (tot[2] - tot[0]) * b / parts).second);
if(textured) {
co->tv.tvertices.push_back(glhr::pointtogl(tot[0] + (tot[1] - tot[0]) * a / parts + (tot[2] - tot[0]) * b / parts));
co->tv.colors.push_back(shadecol);
}
else {
co->tv.tvertices.push_back(shade);
}
};
for(int a=0; a<parts; a++)
for(int b=0; b<parts-a; b++) {
tri(a, b);
tri(a+1, b);
tri(a, b+1);
if(a+b < parts-1) {
tri(a, b+1);
tri(a+1, b);
tri(a+1, b+1);
}
}
}
model_data& model::get() {
auto& md = (unique_ptr<model_data>&) cgi.ext[fname];