karlgluck

void demoExtractBackBufferPixels(LPDIRECT3DDEVICE9 d3d_device) {
  
  // TODO: In your app, add FAILED() macros to check the HRESULTs passed back
  //       by each of the API calls. I leave these out for clarity.
  
  // Grab the backbuffer from the Direct3D device
  LPDIRECT3DSURFACE9 back_buffer = NULL;
  d3d_device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back_buffer);
  
  // Get the buffer's description and make an offscreen surface in system memory.

karlgluck

[console]::beep(260,200)
[console]::beep(320,200)
[console]::beep(380,150)
[console]::beep(520,200)
Start-Sleep -Milliseconds 200
[console]::beep(520,150)
[console]::beep(700,800)

karlgluck

Extensible Merkle Trees

I present a simple algorithm that lets one use an undetermined number of OTS's for the same public key at the expense of a larger signature. My scheme would allow at least 4.2 billion one-time signatures to be used with a single public key using today's technology.

Background

The Merkle signature scheme (MSS) is a well-known way to use a one-time signature (OTS) like the Lamport-Diffie OTS to create a public key cryptosystem. Briefly, one creates a hash tree of height h from 2^h OTS public keys leading to a root public key. To sign a message, one then simply creates a signature from one of the leaf OTS's as usual and provides evidence of its presence in the tree by giving the sequence of hashes that lead from it to the root public key of the MSS.

karlgluck

// Copyright 2018 Karl Gluck
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in

karlgluck

public class ECSEntity
{
    public ArrayList Components;

    public static ECSEntity Acquire ()
    {
        throw new System.NotImplementedException();
        ECSEntity retval = null;
        return retval;
    }

karlgluck

private static Vector3 ViewportToWorldPointUnity (Vector3 point, float fieldOfView, float aspect, Vector3 from, Vector3 to, Vector3 up)
{
    // The zNear / zFar magic numbers are what Unity's viewport always uses regardless of camera settings
    var matP = Matrix4x4.Perspective (fieldOfView, aspect, 0.6f /* zNear */, 1000f /* zFar */);

    // For some reason we have to reverse these coordinates
    from = -from;
    to = -to;

karlgluck

How to set up Gvim + OmniSharp-vim on Windows 10

Install Gvim

Right-click the C:\Program Files (x86)\Vim folder and change its Security permissions to allow full control & editing -> You shouldn't have to give admin permissions to do anything else in this guide

Install pathogen.vim

Clone OmniSharp-vim to C:\Program Files (x86)\Vim\vimfiles\bundle\omnisharp-vim

karlgluck

public static bool IsPointInside (Vector2 point, Vector2[] polygonBoundary)
{
    int i = 0, j = 1;
    int retval = 0;
    while (j < polygonBoundary.Length)
    {
        var pointI = polygonBoundary[i];
        var pointJ = polygonBoundary[j];
        int side = (pointJ.x - pointI.x) * (point.y - pointI.y) - (point.x -  pointI.x) * (pointJ.y - pointI.y);
        int upward   = ((side > 0) & (pointI.y <= point.y) & (pointJ.y >  point.y)) ? +1 : 0;

karlgluck

using System;
using System.Collections;
using System.Reflection;
using UnityEngine.Scripting;

// [Bind] is used to annotate a static field or property of type Func or Action. It causes
// the value of that member to be mapped to a function somewhere else in the program with the
// same name as that field. The target function can be a static function or an instance
// function whose class has a static property/field of its own type named "Singleton".
//

karlgluck

function doGet(request)
{
  var lock = LockService.getPublicLock();
  lock.waitLock(15000);
  var ss = SpreadsheetApp.openById(request.parameter.id);
  var sheet = ss.getSheetByName('Sheet1');
  var obj;
  var dataRange = sheet.getRange(1, 1, sheet.getLastRow(), sheet.getLastColumn());
  var dataValues = dataRange.getValues();
  if (request.parameter.k && request.parameter.v) {