newpolaris’s gists

newpolaris / source.cpp

Last active May 6, 2023 16:31

bullet debug draw

	#include <iostream>
	#include <bullet/btBulletDynamicsCommon.h>
	#include <glad/glad.h>
	#include <GLFW/glfw3.h>
	#include <vector>
	#include <string>
	#include <glm/glm.hpp>
	#include <glm/gtc/matrix_transform.hpp>
	#include <glm/gtc/type_ptr.hpp>

newpolaris / gist:6f15e50c8818e5665cb6265e4207d1a2

Created April 27, 2022 15:27

dumb unique_ptr

newpolaris / GetProjectFromCameraMtx2

Created February 9, 2022 13:16

GetProjectFromCameraMtx2

	// http://jamesgregson.blogspot.com/2011/11/matching-calibrated-cameras-with-opengl.html
	// 결과는 거의 같은데, (3,3), (3,4), (4,3)이 여긴 죄다 양수임
	// https://ksimek.github.io/2013/06/03/calibrated_cameras_in_opengl/ 여기서는 음수임
	glm::mat4 GetProjectFromCameraMtx2(const glm::mat3& cameraMatrix, float near, float far)
	{
	float fx = cameraMatrix[0][0];
	float fy = cameraMatrix[1][1];
	float cx = cameraMatrix[2][0];
	float cy = cameraMatrix[2][1];
	Eigen::Matrix4d proj;

newpolaris / gist:02f1a164ce9e78f736b5e7a9a11bac5b

Created August 10, 2021 14:59

material.g4

newpolaris / gist:c2cc473d894cffff5f3b7a3933fb65c9

Last active December 1, 2022 14:50

Quat / Euler

	// 오차가 계속 누적되는 듯

	glm::vec3 angle = glm::eulerAngles(B.rotation);
	angle = glm::degrees(angle);
	ImGui::SliderFloat3("Rotation", (float*)&angle, -180.f, 180.f);
	angle.y = glm::clamp(angle.y, -91.f, 91.f);
	B.rotation = glm::radians(angle);

	y에 90을 넣어도, 다시 들어올때는 89.98 정도가 나옴
	eulerAngles 함수는 -90 ~ 90 이 제한임 // https://gamedev.stackexchange.com/questions/183771/euler-angle-and-quaternion-conversion-become-weird-when-yaw-is-bigger-than-90-de

newpolaris / RotationBetweenVectors.cpp

Last active June 18, 2021 06:13

	// acos and cross product version
	glm::mat4 RotationBetweenVectors() {
	glm::vec4 c = glm::vec4(center, 0.f, 1.0);
	glm::vec4 o = transform * glm::vec4(objectPoint, 0.0, 1.0);
	glm::vec4 t = glm::vec4(lineTo, 0.0, 1.0);

	auto t_ = glm::vec3(t - c);
	auto o_ = glm::vec3(o - c);
	auto a = glm::normalize(o_);
	auto b = glm::normalize(t_);

newpolaris / ShowVertexNumber.cs

Last active April 24, 2025 09:46

display vertex id in unity

	// Editor script that displays the number and UV coordinates of each individual vertex making up a triangle within a mesh
	// To install, place in the Assets folder of a Unity project
	// Open via Window > Show Vertex Info
	// Author: Luke Gane
	// Last updated: 2015-02-07

	using UnityEditor;
	using UnityEngine;

	public class ShowVertexNumber : EditorWindow {

newpolaris / gist:e9edd948af7eba0d5a87bc05abcba8b9

Created May 20, 2021 17:35

	// Dear ImGui: standalone example application for GLFW + OpenGL 3, using programmable pipeline
	// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
	// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
	// Read online: https://github.com/ocornut/imgui/tree/master/docs

	#define _CRT_SECURE_NO_WARNINGS

	#include "imgui.h"
	#include "imgui_impl_glfw.h"
	#include "imgui_impl_opengl3.h"

newpolaris / vimrc

Last active June 1, 2021 06:18

vimrc.vimrc

	" ============================================================================
	" newpolaris's vim
	"
	"---------------------------------------------- ----------------------
	set nocompatible " be iMproved, required
	filetype off " required

	" e! ++enc=euc-kr

	set nocompatible " be iMproved, required

newpolaris / datagen_plot.py

Last active May 3, 2021 03:08

polynomialRegiression

	// https://himbopsa.tistory.com/13

	import numpy as np
	import matplotlib.pyplot as plt

	x = 5 * np.random.rand(1,150)
	y = -2 * pow(x,3) + 9 pow(x,2) + -3 x + 7 + 4 * np.random.rand(1,150)

	xx = open("data_150.txt","w")
	xx.write("150")

Donghyun Kim newpolaris