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upd: docs for vectors, libvecn.cpp

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This commit is contained in:
Cogi Asd
2024-07-08 19:36:09 +03:00
parent 98504b9f48
commit 97b0d99ce6
2 changed files with 62 additions and 52 deletions
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src/logic/scripting/lua/libvecn.cpp
+18 -44
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@@ -1,7 +1,9 @@
#include "api_lua.hpp"
#define GLM_ENABLE_EXPERIMENTAL
#include <sstream>
#include <glm/glm.hpp>
#include <glm/gtx/quaternion.hpp>
template<int n, template<class> class Operation>
static int l_binop(lua::State* L) {
@@ -87,9 +89,8 @@ static int l_dot(lua::State* L) {
if (lua::gettop(L) != 2) {
throw std::runtime_error("invalid arguments number (2 expected)");
}
return lua::pushnumber(L, glm::dot(lua::tovec<n>(L, 1), // vector a
lua::tovec<n>(L, 2) // vector b
));
return lua::pushnumber(L, glm::dot(lua::tovec<n>(L, 1),
lua::tovec<n>(L, 2)));
}
template<int n>
@@ -97,56 +98,34 @@ static int l_rotate(lua::State* L) {
if (lua::gettop(L) != 2) {
throw std::runtime_error("invalid arguments number (2 expected)");
}
const auto& vec = lua::tovec<n>(L, 1); // vector
const auto& angle = lua::tonumber(L, 2); // scalar (in radians)
const auto& angle = lua::tonumber(L, 2); // scalar (angle)
const float _cos = std::cos(angle);
const float _sin = std::sin(angle);
const auto _cos = std::cos(angle);
const auto _sin = std::sin(angle);
glm::vec<n, float> result_vector = vec;
glm::vec<n, float> result_vector;
for (int i = 0; i < n - 1; ++i) {
float temp = result_vector[i] * _cos - result_vector[i + 1] * _sin;
result_vector[i + 1] = result_vector[i] * _sin + result_vector[i + 1] * _cos;
result_vector[i] = temp;
switch (n) {
case 2:
result_vector.x = vec.x * _cos - vec.y * _sin;
result_vector.y = vec.x * _sin + vec.y * _cos;
break;
// TODO
}
return lua::setvec(L, 1, result_vector);
}
template<int n>
static int l_cross(lua::State* L) {
if (lua::gettop(L)!= 2) {
static int l_inverse(lua::State* L) {
if (lua::gettop(L) != 1) {
throw std::runtime_error("invalid arguments number (2 expected)");
}
const auto& a = lua::tovec<n>(L, 1);
const auto& b = lua::tovec<n>(L, 2);
glm::vec<n, float> result_vector;
if (n == 2) {
result_vector.x = a.x * b.y - a.y * b.x;
return lua::pushnumber(L, result_vector.x);
} else {
for (int i = 0; i < n; ++i) {
int j = (i + 1) % n;
int k = (i + 2) % n;
result_vector[i] = a[j] * b[k] - a[k] * b[j];
}
return lua::setvec(L, 1, result_vector);
}
}
template<int n>
static int l_inverse(lua::State* L) {
if (lua::gettop(L)!= 1) {
throw std::runtime_error("invalid arguments number (1 expected)");
}
const auto& vec = lua::tovec<n>(L, 1);
const auto& _vector = lua::tovec<n>(L, 1); //vector
glm::vec<n, float> result_vector;
for (int i = 0; i < n; i++) {
result_vector[i] = -vec[i];
result_vector[i] = -_vector[i];
}
return lua::setvec(L, 1, result_vector);
}
@@ -180,7 +159,6 @@ const luaL_Reg vec2lib [] = {
{"round", lua::wrap<l_unaryop<2, glm::round>>},
{"tostring", lua::wrap<l_tostring<2>>},
{"inv", lua::wrap<l_inverse<2>>},
{"cross", lua::wrap<l_cross<2>>},
{"rot", lua::wrap<l_rotate<2>>},
{"pow", lua::wrap<l_pow<2>>},
{"dot", lua::wrap<l_dot<2>>},
@@ -198,8 +176,6 @@ const luaL_Reg vec3lib [] = {
{"round", lua::wrap<l_unaryop<3, glm::round>>},
{"tostring", lua::wrap<l_tostring<3>>},
{"inv", lua::wrap<l_inverse<3>>},
{"cross", lua::wrap<l_cross<3>>},
{"rot", lua::wrap<l_rotate<3>>},
{"pow", lua::wrap<l_pow<3>>},
{"dot", lua::wrap<l_dot<3>>},
{NULL, NULL}
@@ -216,8 +192,6 @@ const luaL_Reg vec4lib [] = {
{"round", lua::wrap<l_unaryop<4, glm::round>>},
{"tostring", lua::wrap<l_tostring<4>>},
{"inv", lua::wrap<l_inverse<4>>},
{"cross", lua::wrap<l_cross<4>>},
{"rot", lua::wrap<l_rotate<4>>},
{"pow", lua::wrap<l_pow<4>>},
{"dot", lua::wrap<l_dot<4>>},
{NULL, NULL}