Skip to main content

luaur_vm/functions/
math_map.rs

1use crate::functions::lua_l_checknumber::lua_l_checknumber;
2use crate::functions::lua_pushnumber::lua_pushnumber;
3use crate::type_aliases::lua_state::lua_State;
4
5#[no_mangle]
6pub unsafe fn math_map(l: *mut lua_State) -> i32 {
7    let x = lua_l_checknumber(l, 1);
8    let inmin = lua_l_checknumber(l, 2);
9    let inmax = lua_l_checknumber(l, 3);
10    let outmin = lua_l_checknumber(l, 4);
11    let outmax = lua_l_checknumber(l, 5);
12
13    let result = outmin + (x - inmin) * (outmax - outmin) / (inmax - inmin);
14    lua_pushnumber(l, result);
15    1
16}