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aml_lua_binding.cpp
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aml_lua_binding.cpp
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//
// Created by af on 17.01.21.
//
#include "aml_lua_binding.h"
#include <iostream>
int amlAdd4xN(lua_State *L) { // TODO detect the length of the table
if (lua_istable(L, 1) && lua_istable(L, 2)) {
double a0 = 0;
double a1 = 0;
double a2 = 0;
double a3 = 0;
double b0 = 0;
double b1 = 0;
double b2 = 0;
double b3 = 0;
lua_pushinteger(L, 1);
int type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a0 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 2);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a1 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 3);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a2 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 4);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a3 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
lua_pop(L, 1);
//
//
lua_pushinteger(L, 1);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
b0 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 2);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
b1 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 3);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
b2 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 4);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
b3 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
lua_pop(L, 1);
//
VectorDouble4D a(b0, b1, b2, b3);//I know confusing
VectorDouble4D b(a0, a1, a2, a3);//doesn't mater for addition but subtraction
a += b;
a0 = a[0];
a1 = a[1];
a2 = a[2];
a3 = a[3];
lua_newtable(L);
lua_pushnumber(L, a0);
lua_seti(L, -2, 1);
lua_pushnumber(L, a1);
lua_seti(L, -2, 2);
lua_pushnumber(L, a2);
lua_seti(L, -2, 3);
lua_pushnumber(L, a3);
lua_seti(L, -2, 4);
return 1;
} else {
std::cout << "no table given" << std::endl;
return 0;
}
}
int amlMap4xN(lua_State *L) {
if (lua_istable(L, -1) && lua_isnumber(L, -2) && lua_isnumber(L, -3) && lua_isnumber(L, -4) &&
lua_isnumber(L, -5)) {
double a0 = 0;
double a1 = 0;
double a2 = 0;
double a3 = 0;
lua_pushinteger(L, 1);
int type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a0 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 2);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a1 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 3);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a2 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
//
lua_pushinteger(L, 4);
type = lua_gettable(L, -2);
if (type == LUA_TNUMBER) {
a3 = lua_tonumber(L, -1);
}
lua_pop(L, 1);
lua_pop(L, 1);
//
//
VectorDouble4D a(a0, a1, a2, a3);
double lowerInput = lua_tonumber(L, -3);
double upperInput = lua_tonumber(L, -4);
double lowerOutput = lua_tonumber(L, -1);
double upperOutput = lua_tonumber(L, -2);
a.map(upperInput, lowerInput, upperOutput, lowerOutput);
a0 = a[0];
a1 = a[1];
a2 = a[2];
a3 = a[3];
lua_newtable(L);
lua_pushnumber(L, a0);
lua_seti(L, -2, 1);
lua_pushnumber(L, a1);
lua_seti(L, -2, 2);
lua_pushnumber(L, a2);
lua_seti(L, -2, 3);
lua_pushnumber(L, a3);
lua_seti(L, -2, 4);
return 1;
} else {
std::cout << "no table given" << std::endl;
return 0;
}
}
void initAmlLua(lua_State *L) {
lua_register(L, "addVec4", amlAdd4xN);
lua_register(L, "mapVec4", amlMap4xN);
}