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new parser features: angle_from_matrix, dist_from_matrix, solve

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Zeno Rogue
2025-12-11 02:34:15 +01:00
parent 4bc5a3e32a
commit 0bc1926c15
1 changed files with 24 additions and 0 deletions
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24
util.cpp
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@@ -245,6 +245,12 @@ cld exp_parser::parse(int prio) {
else if(eat("floor(")) res = floor(validate_real(parsepar())); else if(eat("floor(")) res = floor(validate_real(parsepar()));
else if(eat("frac(")) { res = parsepar(); res = res - floor(validate_real(res)); } else if(eat("frac(")) { res = parsepar(); res = res - floor(validate_real(res)); }
else if(eat("to01(")) { res = parsepar(); return atan(res) / ld(M_PI) + ld(0.5); } else if(eat("to01(")) { res = parsepar(); return atan(res) / ld(M_PI) + ld(0.5); }
else if(eat("angle_from_matrix(")) {
auto m = parsematrix(); eat(")"); return -atan2(m * C0);
}
else if(eat("dist_from_matrix(")) {
auto m = parsematrix(); eat(")"); return hdist0(m * C0);
}
else if(eat("min(")) { else if(eat("min(")) {
ld a = rparse(0); ld a = rparse(0);
while(skip_white(), eat(",")) a = min(a, rparse(0)); while(skip_white(), eat(",")) a = min(a, rparse(0));
@@ -381,6 +387,24 @@ cld exp_parser::parse(int prio) {
dynamicval<cld> d(extra_params[name], val); dynamicval<cld> d(extra_params[name], val);
res = parsepar(); res = parsepar();
} }
else if(eat("solve(")) {
string name = next_token();
force_eat("=");
cld minval = parse(0);
force_eat(",");
cld maxval = parse(0);
force_eat(",");
int bak_at = at;
for(int i=0; i<100; i++) {
res = (minval + maxval) / cld(2);
dynamicval<cld> d(extra_params[name], res);
at = bak_at;
cld result = parsepar();
println(hlog, res, " : ", result);
if(real(result) > 0) maxval = res;
else minval = res;
}
}
#if CAP_TEXTURE #if CAP_TEXTURE
else if(eat("txp(")) { else if(eat("txp(")) {
cld val = parsepar(); cld val = parsepar();