FISHERR – HW4 – MADEUP

Butterfly

Butterflies

The first model I “Madeup” was a scene of blue butterflies. I used a parametric equation for the butterflies and populated the scene with many of them.

 

Hearts

Hearts

The second model I “Madeup” was a variation on the “heart” parametric equation. I designed the loop for generating the curve, and did some revolutions, translation, rotations, and scaling to create the heart-based shapes.

Thought Process:

For this assignment, I initially began testing the application by running old examples to get a feel for the way the code runs.  I tested trying out a variety of options for generating shapes, but I eventually decided that I wanted a more systematic and logical model. I researched parametric equations and was able to understand how to implement them via loops and sine/cosine functions.  The parametric equations made sense to use in Madeup and allowed for a straightforward design and implementation. Without such equations, the logic of designing a model by random tweaking is quite difficult.

Challenges:

There was a slight learning curve with Madeup since I had used it personally. It can still be a challenge to understand how the parameters are used in functions. One challenge that I came across was trying to visualize the model for non-parametric models. As logical as the program is, creativity is needed to understand how the models will be rendered.  I overcame this challenge by playing with different functions and seeing what the result was.  Lastly, there was some issues with rendering the program for code that uses a lot of processing power. I had to cut back on code in order to save computational resources, so I think there is a need to understand the stress limits of what the program is designed for.

 Feature Requests:

  1. Be able to save/export the code to a text file or a “.mdup” file.
  2. Be able to render models using more than one color in a single program
  3. Possibly be able to inspect the model for coordinates. For example, being able to toggle displaying a 3D grid with units.
  4. Display more helpful messages if there is a syntax error, at least if it is not running at all.
  5. Display statistics for the shapes that are used like faces and vertices.

Bugs:

  1. Underscores are unable to be be parsed by the language. For example, I could not declare a variable with “x_1” or “y_2” since the program would not run.
  2. At one time I got this error:# A fatal error has been detected by the Java Runtime Environment:# SIGSEGV (0xb) at pc=0x00007facede165f0, pid=16185, tid=140380725032704# JRE version: 6.0_27-b27# Java VM: OpenJDK 64-Bit Server VM (20.0-b12 mixed mode linux-amd64 compressed oops)

    # Derivative: IcedTea6 1.12.6

    # Distribution: Ubuntu 12.04 LTS, package 6b27-1.12.6-1ubuntu0.12.04.4

    # Problematic frame:

    # V [libjvm.so+0x3ef5f0] DictionaryEntry::contains_protection_domain(oopDesc*) const+0x40

    # An error report file with more information is saved as:

    # /tmp/hs_err_pid16185.log

    # If you would like to submit a bug report, please include

    # instructions how to reproduce the bug and visit:

    # https://bugs.launchpad.net/ubuntu/+source/openjdk-6/

    Aborted (core dumped)

 

fisherr_hw4_bug1

3.  Another error I got was:

terminate called after throwing an instance of ‘std::bad_alloc’

what(): std::bad_alloc

Aborted (core dumped)

which I don’t know if this was a problem with the code I used or something in the Madeup program with using too much memory.

fisherr_hw4_bug2

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