benjaminbojko

//
//  LinkedTextView.h
//
//  Created by Benjamin Bojko on 10/22/14.
//
//  The MIT License (MIT)
//
//  Copyright (c) 2014 Benjamin Bojko
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy

benjaminbojko

iOS Background Download Gotchas

I've been doing some thorough investigations into setting up a solid background download process. Here are some of the gotchas I stumbled upon and wanted to capture:

Background Tasks

• Only download and upload tasks are allowed to run in the background (no data tasks)
• Once a download task completes, your app will have to move that task from its temporary location to a permament location (or process the data somehow); The temporary file will be deleted once the URLSession:downloadTask:didFinishDownloadingToURL: delegate method returns.

App Suspension

• If your app is suspended, it will be re-launched whenever a background task completes

benjaminbojko

#include "cinder/app/AppNative.h"
#include "cinder/gl/Texture.h"

#include "CinderOpenCV.h"

using namespace ci;
using namespace ci::app;

static std::string const VideoStreamAddress = "rtsp://user:pass@domain.com/path/to/stream";

benjaminbojko

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" InitialTargets="CreateUserConfig; AddCinderDir">
  <ImportGroup Label="PropertySheets" />
  <ItemDefinitionGroup />

  <PropertyGroup Label="FileReferences">
    <!-- Default Cinder path relative to this file; Override in custom props file -->
    <CinderDir>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)\..'))</CinderDir>
    <UserFile>$([System.IO.Path]::GetFullPath('$(MSBuildThisFileDirectory)\UserConfig.props'))</UserFile>
  </PropertyGroup>

benjaminbojko

vector<float> degs = {60, 120, 180, 240, 300, 360, 420, 480, -60, -120, -180, -240, -300, -360, -420, -480};

// angleAxis -> angle
for (float deg : degs) {
  float rad = glm::radians(deg);
  glm::quat rot = glm::angleAxis(rad, glm::vec3(0, 0, 1));
  std::cout << "angleAxis -> angle: " + to_string(deg) + " deg -> " + to_string(glm::degrees(glm::angle(rot))) + " deg" << std::endl;
}

// angleAxis -> roll

benjaminbojko

#pragma once

#include "cinder/Tween.h"

//==================================================
// Anim<T> + T
// 

template<typename T>
inline T operator + (const ci::Anim<T> & tween, const T & value) {

benjaminbojko

// Modified version of an Apple Docs example that accomodates for the extra milliseconds used in NodeJS/JS dates
// https://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/DataFormatting/Articles/dfDateFormatting10_4.html#//apple_ref/doc/uid/TP40002369-SW1
- (NSDate *)dateForRFC3339DateTimeString:(NSString *)rfc3339DateTimeString {

	NSDateFormatter *rfc3339DateFormatter = [[NSDateFormatter alloc] init];

	[rfc3339DateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'SSS'Z'"];
	[rfc3339DateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];

	// Convert the RFC 3339 date time string to an NSDate.

benjaminbojko

/// based on http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview
[UIView animateWithDuration:0.3f delay:0.0f options:UIViewAnimationOptionBeginFromCurrentState|UIViewAnimationOptionCurveEaseIn animations:^{
	CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;
	rotationAndPerspectiveTransform.m34 = 1.0 / -500;
	rotationAndPerspectiveTransform = CATransform3DRotate(rotationAndPerspectiveTransform, M_PI_2, 0.0f, 1.0f, 0.0f);
	[self.view.layer setTransform:rotationAndPerspectiveTransform];
	
} completion:^(BOOL finished) {
	
	// REFRESH YOUR VIEW HERE

benjaminbojko

//
//  UITextView+LayoutHelpers.h
//
//  Created by Benjamin Bojko on 10/24/14.
//  Copyright (c) 2014 Benjamin Bojko. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UITextView (LayoutHelpers)

benjaminbojko

Color Workflow Tools

No matter how well organized or spec'ed out a PSD is, there's always that point where you have to manually bring colors from design to code. Here are a few tools that have helped me get a seamless 360° workflow for dealing with colors in OS X.

Alfred 2 Colors Workflow

Amazing workflow by Tyler Eich that allows you to preview, modify and convert colors in a bunch of different color spaces and formats (rgb, hsl, hex, ...). Great if you want to convert those hex values to RGB for CSS.

• Link: http://www.alfredforum.com/topic/805-colors%E2%80%94convert-color-formats-access-the-os-x-color-panel/