https://github.com/vaiorabbit/rmath3d

Ruby Math Module for 3D Applications
https://github.com/vaiorabbit/rmath3d

3d math matrix ruby vector

Last synced: 7 months ago
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Ruby Math Module for 3D Applications

• Host: GitHub
• URL: https://github.com/vaiorabbit/rmath3d
• Owner: vaiorabbit
• License: other
• Created: 2013-07-15T12:15:49.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2020-07-23T15:16:01.000Z (over 5 years ago)
• Last Synced: 2025-03-28T14:39:15.278Z (8 months ago)
• Topics: 3d, math, matrix, ruby, vector
• Language: C
• Size: 115 KB
• Stars: 11
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: ChangeLog
  • License: LICENSE.txt

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README

          


# rmath3d : Ruby Math Module for 3D Applications #

rmath3d is a math module for 3D game programming and computer graphics.

*   Last Update: Jul 23, 2020

*   Since: Jul 20, 2008

* rmath3d (C Extension Library Implementation) [![Gem Version](https://badge.fury.io/rb/rmath3d.svg)](https://badge.fury.io/rb/rmath3d) [![Gem](https://img.shields.io/gem/dt/rmath3d.svg)](https://rubygems.org/gems/rmath3d)

* rmath3d_plain (Pure Ruby Implementation) [![Gem Version](https://badge.fury.io/rb/rmath3d_plain.svg)](https://badge.fury.io/rb/rmath3d_plain) [![Gem](https://img.shields.io/gem/dt/rmath3d_plain.svg)](https://rubygems.org/gems/rmath3d_plain)

## Features ##

### Supports frequently-used vector and matrix classes ###

*   RMtx2 (2x2 matrix)

*   RMtx3 (3x3 matrix)

*   RMtx4 (4x4 matrix)

*   RQuat (Quaternion)

*   RVec2 (2-element vector)

*   RVec3 (3-element vector)

*   RVec4 (4-element vector)

### Two implementations that are interchangeable with each other ###

1. rmath3d.{so|bundle} : Ruby extension library for faster execution.

2. rmath3d_plain.rb    : Ruby implemantation for debugging use.

## Tested Environment ##

Notice: This library provides native extension. You must setup develop environment (or DevKit) before installation.

*   Ruby

    *   ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x64-mingw32]

    *   Ruby 2.3 and prior versions are no longer supported.

## Building rmath3d.{so|bundle} ##

Via RubyGems ( https://rubygems.org/gems/rmath3d ):

    $ gem install rmath3d

for pure ruby version:

    $ gem install rmath3d_plain

### From source package ###

    $ rake install

### For mkmf users ###

    $ ruby extconf.rb

    $ make

For Windows users, type commands below via the "Visual Studio 200{5|8}

Command Prompt". This process requires "cl.exe", "link.exe and

"mt.exe" to be exist in the program PATH:

    X:\> ruby extconf.rb

    X:\> nmake

You might encounter the "MSC version unmatch: _MSC_VER: XXXX is

expected." error at the time compiling "rmath3d.c". See the

instruction in the extconf.rb to avoid this error.

### Embedding manifest file (For Windows users) ###

Make sure that your rmath3d.so has "rmath3d.so.manifest" embedded into itself.

Otherwise, while using rmath3d.so in your application, you might come

across an error dialog saying:

    ---------------------------

    Microsoft Visual C++ Runtime Library

    ---------------------------

    Runtime Error!

    

    Program: d:\ruby\bin\ruby.exe

    

    R6034

    An application has made an attempt to load the C runtime library incorrectly.

    Please contact the application's support team for more information.

    

    ---------------------------

    OK   

    ---------------------------

To ensure the file status, try checking if the string "manifest" can

be found in the file:

    X:\> strings rmath3d.so | grep manifest

If you don't see any outputs, it's time to embed "rmath3d.so.manifest". 

    X:\> mt -manifest rmath3d.so.manifest -outputresource:rmath3d.so;2

or run the "embed_manifest.bat" instead. Then check again the status.

    X:\> strings rmath3d.so | grep manifest

    

    

    X:\> 

If you see some similar output like that, the manifest file

"rmath3d.so.manifest" is successfully embedded.

## About rmath3d_plain.rb ##

rmath3d_plain.rb is a pure Ruby version of rmath3d.so: all the functionality of

rmath3d.so is implemented with plain Ruby code.

It is possible to trace the bugs caused by rmath3d.so by replacing the code

    gem 'rmath3d'

    require 'rmath3d/rmath3d'

with

    gem 'rmath3d'

    require 'rmath3d/rmath3d_plain'

rmath3d_plain.rb performs more strict type checking, that might be some burden

for its execution speed. So don't expect the performance efficiency

when you use rmath3d_plain.rb instead of rmath3d.so.

## Notes ##

### Collaboration with ruby-opengl ###

The instances of RMtx4 can be used directly as the arguments of the

ruby-opengl functions that accept matrices.

For example, this code snippet using RMath:

    eye = RVec3.new(0.0, 15.0, 15.0)

    at  = RVec3.new(0.0,  0.0,  0.0)

    up  = RVec3.new(0.0,  1.0,  0.0)

    mtxLookAt = RMtx4.new.lookAtRH( eye, at, up )

    glMatrixMode( GL_PROJECTION )

    glLoadMatrix( @mtxProj )

    

    mtxProj = RMtx4.new.perspectiveFovRH( 30.0*Math::PI/180.0, WINDOW_WIDTH/WINDOW_HEIGHT, 0.1, 1000.0 )

    glMatrixMode( GL_MODELVIEW )

    glLoadMatrix( @mtxLookAt )

has the same transformation effect with the OpenGL fixed pipeline:

    glMatrixMode( GL_PROJECTION )

    gluPerspective( 30.0*Math::PI/180.0, WINDOW_WIDTH/WINDOW_HEIGHT, 0.1, 1000.0 )

    

    glMatrixMode( GL_MODELVIEW )

    gluLookAt( 0.0,15.0,15.0, 0.0,0.0,0.0, 0.0,1.0,0.0 )

### Compatibility with matrix.rb ###

Currently, there is no combenient way to convert between matrix.rb's

+Matrix+ and +RMtx{3|4}".

(The matrix.rb is a standard Ruby library that provides N-dimensional

+Vector+ class and "N x M" +Matrix+ class.)

## Information ##

*   RubyGems

	*   https://rubygems.org/gems/rmath3d

*   Github

	*   https://github.com/vaiorabbit/rmath3d

 

## License ##

All source codes are available under the terms of the zlib/libpng license

(see LICENSE.txt).