Skip to content

Instantly share code, notes, and snippets.

View mwalczyk's full-sized avatar

Michael Walczyk mwalczyk

285 followers · 18 following
View GitHub Profile
@Dan-Piker
Dan-Piker / Moebius3d
Last active February 15, 2025 06:56
Moebius transformations in 3d
//Moebius transformations in 3d, by reverse stereographic projection to the 3-sphere,
//rotation in 4d space, and projection back.
//by Daniel Piker 09/08/20
//Feel free to use, adapt and reshare. I'd appreciate a mention if you post something using this.
//You can also now find this transformation as a component in Grasshopper/Rhino
//I first wrote about these transformations here:
//https://spacesymmetrystructure.wordpress.com/2008/12/11/4-dimensional-rotations/
//If you want to transform about a given circle. Points on the circle and its axis stay on those curves.
//You can skip these 2 lines if you want to always use the origin centred unit circle.
@algal
algal / loadPoints.swift
Created December 28, 2018 19:41
Read vertex positions with Model I/O
// known-good: Swift 4.2, macOS
import Foundation
import ModelIO
private func LogDebug(_ s:Any) -> Void { print(s) }
private func LogInfo(_ s:Any) -> Void { print(s) }
private func LogError(_ s:Any) -> Void { print(s) }
struct POINT3D {
var x:Float
@martinruenz
martinruenz / ffmpeg-snippets.md
Last active March 7, 2025 22:28
ffmpeg snippets / cheatsheet
@osvik
osvik / SNAP-SVG-CHEAT-SHEET.md
Last active July 17, 2024 18:54
@tilkinsc
tilkinsc / load_dds.c
Last active February 22, 2026 07:33
C OpenGL DDS Loading Tutorial
/*
Can load easier and more indepth with https://github.com/Hydroque/DDSLoader
Because a lot of crappy, weird DDS file loader files were found online. The resources are actually VERY VERY limited.
Written in C, can very easily port to C++ through casting mallocs (ensure your imports are correct), goto can be replaced.
https://www.gamedev.net/forums/topic/637377-loading-dds-textures-in-opengl-black-texture-showing/
http://www.opengl-tutorial.org/beginners-tutorials/tutorial-5-a-textured-cube/
^ Two examples of terrible code
@csukuangfj
csukuangfj / QGraphicsSceneTest.cpp
Last active April 9, 2025 10:20 — forked from benjbaron/QGraphicsSceneTest.cpp
Qt QGraphicsScene click, select, move, resize, delete QGraphicsItems
// Copyright 2017. All Rights Reserved.
// Author: csukuangfj@gmail.com (Fangjun Kuang)
#include <QtGui>
#include <QGraphicsRectItem>
#include <QGraphicsView>
#include <QApplication>
#include <QGraphicsSceneMouseEvent>
class CustomItem : public QGraphicsEllipseItem
@jFransham
jFransham / Rust Optimization.md
Last active March 19, 2026 01:54
@thestonefox
thestonefox / ViveCursor.cs
Last active June 5, 2019 20:54
A basic implementation of a laser pointer for the HTC Vive controllers in Unity3D
using UnityEngine;
using System.Collections;
public class ViveCursor : MonoBehaviour {
public enum AxisType
{
XAxis,
ZAxis
}
@kyrs
kyrs / opencv_tensor.cc
Last active February 15, 2024 12:44
File Takes an Image Mat file as an input and convert it to tensor.
/*
Following file take opencv mat file as an input and run inception model on it
Created by : Kumar Shubham
Date : 27-03-2016
*/
//Loading Opencv fIles for processing
#include <opencv2/opencv.hpp>
@zhangzhensong
zhangzhensong / cvgltexture.cpp
Last active April 24, 2025 23:11
Converting OpenCV Mat to OpenGL texture
// don't forget to include related head files
void BindCVMat2GLTexture(cv::Mat& image, GLuint& imageTexture)
{
if(image.empty()){
std::cout << "image empty" << std::endl;
}else{
//glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glGenTextures(1, &imageTexture1);
glBindTexture(GL_TEXTURE_2D, imageTexture1);