fract’ol

Computer Graphics Fractals

Summary: This project is about creating graphically beautiful fractals.

Version: 2

$fractol$

I Foreword
II Introduction
III Objectives
IV Common Instructions
V Mandatory part
- V.1 Rendering
- V.2 Graphic management
VI Bonus part
VII Submission and peer-evaluation

Chapter I

Foreword

Here’s what Wikipedia has to say on hydraulic fracturing :

The "hydraulic fracturing," is the targeted disruption of geological formations with low permeability by means of injection under high pressure of a fluid to micro-cracking and crack the rock. This fracturing can be performed near the surface or at depth (over 1 km or more than 4 km in the case of shale gas) and from vertical wells, sloped or horizontal.

This relatively old technique (1947), developed for conventional oil deposits, is re- newed by its association with horizontal drilling (developed from 1980). It is the gradual mastery of the economic viability of this association for non-conventional deposits, who guided the recent development of the operation of these: it made available formerly in- accessible resources, or which have been exploited at exorbitant costs and slowly.

It is carried out by fracturing the rock with a "stress" mécanique3 using a fluid in- jected under high pressure from a surface drilling, to increase the macro-porosity and the micro-porosity. The fluid could be the water, a slurry or a technical fluid whose viscosity was adjusted.

This project is not called fract’oil and accordingly has no relation to hydraulic frac- turing.

Chapter II

Introduction

The term fractal was first used by mathematician Benoit Mandelbrot in 1974. He based it on the Latin word fractus which means "broken" or "fractured".

A fractal is an abstract mathematical object, like a curve or a surface, which pattern remains the same at every scale.

Various natural phenomena – like the romanesco cabbage – have some fractal features.

Now, it’s your turn to generate some magnificent fractals!

Chapter III

Objectives

It’s time for you to create a basic computer graphics project!

You are going to use the school graphical library: theMiniLibX! This library was developed internally and includes basic necessary tools to open a window, create images and deal with keyboard and mouse events.

This will be the opportunity for you to get familiar with theMiniLibX, to discover or use the mathematical notion of complex numbers , to take a peek at the concept of optimization in computer graphics and practice event handling.

Don’t forget to watch the videos on e-learning!

Chapter IV

Common Instructions

Your project must be written in C.
Your project must be written in accordance with the Norm. If you have bonus files/functions, they are included in the norm check and you will receive a 0 if there is a norm error inside.
Your functions should not quit unexpectedly (segmentation fault, bus error, double free, etc) apart from undefined behaviors. If this happens, your project will be considered non functional and will receive a 0 during the evaluation.
All heap allocated memory space must be properly freed when necessary. No leaks will be tolerated.
If the subject requires it, you must submit a Makefilewhich will compile your source files to the required output with the flags-Wall,-Wextraand-Werror, use cc, and your Makefile must not relink.
YourMakefilemust at least contain the rules$(NAME),all,clean,fcleanand re.
To turn in bonuses to your project, you must include a rulebonusto your Makefile, which will add all the various headers, librairies or functions that are forbidden on the main part of the project. Bonuses must be in a different file_bonus.{c/h}if the subject does not specify anything else. Mandatory and bonus part evaluation is done separately.
If your project allows you to use your libft, you must copy its sources and its associatedMakefilein alibftfolder with its associated Makefile. Your project’s Makefilemust compile the library by using itsMakefile, then compile the project.
We encourage you to create test programs for your project even though this work won’t have to be submitted and won’t be graded. It will give you a chance to easily test your work and your peers’ work. You will find those tests especially useful during your defence. Indeed, during defence, you are free to use your tests and/or the tests of the peer you are evaluating.
Submit your work to your assigned git repository. Only the work in the git reposi- tory will be graded. If Deepthought is assigned to grade your work, it will be done

fract’ol Computer Graphics Fractals

after your peer-evaluations. If an error happens in any section of your work during
Deepthought’s grading, the evaluation will stop.

Chapter V

Mandatory part

Program name fractol
Turn in files Makefile, *.h, *.c
Makefile NAME, all, clean, fclean, re
Arguments The type of fractal to display and any other option
available
External functs.

open, close, read, write, malloc, free, perror, strerror, exit
All functions of the math library (-lm compiler option, man man 3 math)
All functions of the MiniLibX
ft_printf and any equivalent YOU coded

Libft authorized Yes
Description This project is about creating a small fractal
exploration program. First, you have to know what
a fractal is.

Your project must comply with the following rules:

You must use theMiniLibX. Either the version available on the school machines, or installing it using its sources.
You have to turn in aMakefilewhich will compile your source files. It must not relink.
Global variables are forbidden.

fract’ol Computer Graphics Fractals

V.1 Rendering

Your program must offer the Julia set and the Mandelbrot set.
The mouse wheel zooms in and out, almost infinitely (within the limits of the computer). This is the very principle of fractals.
You must be able to create different Julia sets by passing different parameters to the program.
A parameter is passed on the command line to define what type of fractal will be displayed in a window.

◦ You can handle more parameters to use them as rendering options.
◦ If no parameter is provided, or if the parameter is invalid, the program displays
a list of available parameters and exits properly.

You must use at least a few colors to show the depth of each fractal. It’s even better if you hack away on psychedelic effects.

V.2 Graphic management

Your program has to display the image in a window.
The management of your window must remain smooth (changing to another win- dow, minimizing, and so forth).
PressingESCmust close the window and quit the program in a clean way.
Clicking on the cross on the window’s frame must close the window and quit the program in a clean way.
The use of theimagesof theMiniLibXis mandatory.

Chapter VI

Bonus part

Usually, you would be encouraged to develop your own original extra features. However, there will be much more interesting graphic projects later. They are waiting for you!! Don’t lose too much time on this assignment!

You will get some extra points with the following features:

One more different fractal (more than a hundred different types of fractals are referenced online).
The zoom follows the actual mouse position.
In addition to the zoom: moving the view by pressing the arrows keys.
Make the color range shift.

The bonus part will only be assessed if the mandatory part is
PERFECT. Perfect means the mandatory part has been integrally done
and works without malfunctioning. If you have not passed ALL the
mandatory requirements, your bonus part will not be evaluated at all.

Chapter VII

Submission and peer-evaluation

Turn in your assignment in yourGitrepository as usual. Only the work inside your repos- itory will be evaluated during the defense. Don’t hesitate to double check the names of your files to ensure they are correct.

As these assignments are not verified by a program, feel free to organize your files as you wish, as long as you turn in the mandatory files and comply with the requirements.

Tiagochicoo/fractol