OctaForge
/
libcubescript
1
0
Fork 1
Code Issues 1 Pull Requests Releases Wiki Activity
libcubescript/lib_math.cc

199 lines
6.4 KiB
C++
Raw Blame History

#include "cubescript.hh"
#include <math.h>
namespace cscript {
static constexpr CsFloat PI = 3.14159265358979f;
static constexpr CsFloat RAD = PI / 180.0f;
void cs_init_lib_math(CsState &cs) {
cs.add_command("sin", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(sin(args[0].get_float() * RAD));
});
cs.add_command("cos", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(cos(args[0].get_float() * RAD));
});
cs.add_command("tan", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(tan(args[0].get_float() * RAD));
});
cs.add_command("asin", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(asin(args[0].get_float()) / RAD);
});
cs.add_command("acos", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(acos(args[0].get_float()) / RAD);
});
cs.add_command("atan", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(atan(args[0].get_float()) / RAD);
});
cs.add_command("atan2", "ff", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(atan2(args[0].get_float(), args[1].get_float()) / RAD);
});
cs.add_command("sqrt", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(sqrt(args[0].get_float()));
});
cs.add_command("loge", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(log(args[0].get_float()));
});
cs.add_command("log2", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(log(args[0].get_float()) / M_LN2);
});
cs.add_command("log10", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(log10(args[0].get_float()));
});
cs.add_command("exp", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(exp(args[0].get_float()));
});
#define CS_CMD_MIN_MAX(name, fmt, type, op) \
cs.add_command(#name, #fmt "1V", [&cs](TvalRange args, TaggedValue &res) { \
auto v = !args.empty() ? args[0].fmt : 0; \
for (ostd::Size i = 1; i < args.size(); ++i) v = op(v, args[i].fmt); \
res.set_##type(v); \
})
CS_CMD_MIN_MAX(min, i, int, ostd::min);
CS_CMD_MIN_MAX(max, i, int, ostd::max);
CS_CMD_MIN_MAX(minf, f, float, ostd::min);
CS_CMD_MIN_MAX(maxf, f, float, ostd::max);
#undef CS_CMD_MIN_MAX
cs.add_command("abs", "i", [&cs](TvalRange args, TaggedValue &res) {
res.set_int(abs(args[0].get_int()));
});
cs.add_command("absf", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(fabs(args[0].get_float()));
});
cs.add_command("floor", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(floor(args[0].get_float()));
});
cs.add_command("ceil", "f", [&cs](TvalRange args, TaggedValue &res) {
res.set_float(ceil(args[0].get_float()));
});
cs.add_command("round", "ff", [&cs](TvalRange args, TaggedValue &res) {
double step = args[1].get_float();
double r = args[0].get_float();
if (step > 0) {
r += step * ((r < 0) ? -0.5 : 0.5);
r -= fmod(r, step);
} else {
r = (r < 0) ? ceil(r - 0.5) : floor(r + 0.5);
}
res.set_float(CsFloat(r));
});
#define CS_CMD_MATH(name, fmt, vtype, type, op, initval, unaryop) \
cs.add_command(name, #fmt "1V", [&cs](TvalRange args, TaggedValue &res) { \
type val; \
if (args.size() >= 2) { \
val = args[0].fmt; \
type val2 = args[1].fmt; \
op; \
for (ostd::Size i = 2; i < args.size(); ++i) { \
val2 = args[i].fmt; \
op; \
} \
} else { \
val = (args.size() > 0) ? args[0].fmt : initval; \
unaryop; \
} \
res.set_##type(val); \
});
#define CS_CMD_MATHIN(name, op, initval, unaryop) \
CS_CMD_MATH(#name, i, CsInt, int, val = val op val2, initval, unaryop)
#define CS_CMD_MATHI(name, initval, unaryop) \
CS_CMD_MATHIN(name, name, initval, unaryop)
#define CS_CMD_MATHFN(name, op, initval, unaryop) \
CS_CMD_MATH(#name "f", f, CsFloat, float, val = val op val2, initval, unaryop)
#define CS_CMD_MATHF(name, initval, unaryop) \
CS_CMD_MATHFN(name, name, initval, unaryop)
CS_CMD_MATHI(+, 0, {});
CS_CMD_MATHI(*, 1, {});
CS_CMD_MATHI(-, 0, val = -val);
CS_CMD_MATHI(^, 0, val = ~val);
CS_CMD_MATHIN(~, ^, 0, val = ~val);
CS_CMD_MATHI(&, 0, {});
CS_CMD_MATHI(|, 0, {});
CS_CMD_MATHI(^~, 0, {});
CS_CMD_MATHI(&~, 0, {});
CS_CMD_MATHI(|~, 0, {});
CS_CMD_MATH("<<", i, CsInt, int, {
val = (val2 < 32) ? (val << ostd::max(val2, 0)) : 0;
}, 0, {});
CS_CMD_MATH(">>", i, CsInt, int, val >>= ostd::clamp(val2, 0, 31), 0, {});
CS_CMD_MATHF(+, 0, {});
CS_CMD_MATHF(*, 1, {});
CS_CMD_MATHF(-, 0, val = -val);
#define CS_CMD_DIV(name, fmt, vtype, type, op) \
CS_CMD_MATH(#name, fmt, vtype, type, { if (val2) op; else val = 0; }, 0, {})
CS_CMD_DIV(div, i, CsInt, int, val /= val2);
CS_CMD_DIV(mod, i, CsInt, int, val %= val2);
CS_CMD_DIV(divf, f, CsFloat, float, val /= val2);
CS_CMD_DIV(modf, f, CsFloat, float, val = fmod(val, val2));
#undef CS_CMD_DIV
CS_CMD_MATH("pow", f, CsFloat, float, val = pow(val, val2), 0, {});
#undef CS_CMD_MATHF
#undef CS_CMD_MATHFN
#undef CS_CMD_MATHI
#undef CS_CMD_MATHIN
#undef CS_CMD_MATH
#define CS_CMD_CMP(name, fmt, type, op) \
cs.add_command(name, #fmt "1V", [&cs](TvalRange args, TaggedValue &res) { \
bool val; \
if (args.size() >= 2) { \
val = args[0].fmt op args[1].fmt; \
for (ostd::Size i = 2; i < args.size() && val; ++i) \
val = args[i-1].fmt op args[i].fmt; \
} else \
val = ((args.size() > 0) ? args[0].fmt : 0) op 0; \
res.set_int(CsInt(val)); \
})
#define CS_CMD_CMPIN(name, op) CS_CMD_CMP(#name, i, CsInt, op)
#define CS_CMD_CMPI(name) CS_CMD_CMPIN(name, name)
#define CS_CMD_CMPFN(name, op) CS_CMD_CMP(#name "f", f, CsFloat, op)
#define CS_CMD_CMPF(name) CS_CMD_CMPFN(name, name)
CS_CMD_CMPIN(=, ==);
CS_CMD_CMPI(!=);
CS_CMD_CMPI(<);
CS_CMD_CMPI(>);
CS_CMD_CMPI(<=);
CS_CMD_CMPI(>=);
CS_CMD_CMPFN(=, ==);
CS_CMD_CMPF(!=);
CS_CMD_CMPF(<);
CS_CMD_CMPF(>);
CS_CMD_CMPF(<=);
CS_CMD_CMPF(>=);
#undef CS_CMD_CMPF
#undef CS_CMD_CMPFN
#undef CS_CMD_CMPI
#undef CS_CMD_CMPIN
#undef CS_CMD_CMP
}
} /* namespace cscript */
Reference in New Issue View Git Blame Copy Permalink