59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
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/*
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* Created by Brett Terpstra 6920201 on 20/03/23.
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* Copyright (c) Brett Terpstra 2023 All Rights Reserved
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*/
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#ifndef ASSIGN3_UTIL_H
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#define ASSIGN3_UTIL_H
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#include <chrono>
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#include <config.h>
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#include <string>
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#include <blt/math/vectors.h>
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#include <type_traits>
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const std::string WINDOW_TITLE = "Assignment 3: They said WHAT?!";
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static constexpr int TARGET_FPS = 60;
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static constexpr float FOV = 90;
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static constexpr float EPSILON = 1.0f;
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static constexpr float GRAVITY = 9.8f;
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static constexpr float TO_RAD = 3.14159265359 / 180.0;
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static inline auto getCurrentTimeNanoseconds() {
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return std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::high_resolution_clock::now().time_since_epoch()).count();
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}
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long getDelta();
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// blt:vec isn't a POD
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typedef struct {
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float x, y, z;
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} vec;
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inline vec operator+(const vec& l, const vec& r) {
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return {l.x + r.x, l.y + r.y, l.z + r.z};
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}
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// template voodoo magic to only allow floats / doubles / other arithmetic types
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// keeps the multiplication of a double type in double precision and downcast to float AFTER calc
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template<typename T, typename std::enable_if<std::is_arithmetic<T>::value>::type* = nullptr>
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inline vec operator*(const vec& v, T s) {
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return {(float) (v.x * s), (float) (v.y * s), (float) (v.z * s)};
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}
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inline vec operator-(const vec& l, const vec& r) {
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return {l.x - r.x, l.y - r.y, l.z - r.z};
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}
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inline vec operator-(const vec& l) {
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return {-l.x, -l.y, -l.z};
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}
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inline vec conv(const blt::vec3& v) {
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return vec{v.x(), v.y(), v.z()};
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}
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#endif //ASSIGN3_UTIL_H
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