Firefly v0.3a

08 September 2023

Overview

Firefly is an Offline Path tracer, written using C++. It simulates light rays to produce realistic images, based on XML Scenes.

Usage

Either Build the project from source following the instructions in the Repository, or download the latest release for your platform from Here

./Firefly -w [Width] -h [Height] -f [Output File] -s [Scene] -a [Anti-Aliasing Count] -d [Ray Depth]

An Example Render

Scenes

Firefly Scenes are defined in XML, following a simple syntax:

<World name="Example Scene">

    <!--Define the Camera View-->
    <Views>
        <Camera id="Main Camera">
            <Position x="0.0" y="0.0" z="0.0"/>
            <Orientation x="0.0" y="0.0" z="-1.0"/>
            <FocalLength>1.0</FocalLength>
            <FoV>110</FoV>
            <DefocusAngle>0</DefocusAngle>
        </Camera>
    </Views>

    <!--Define the Scene-->
    <Scene>
        <!--A Lambertian Sphere-->
        <Object id="Lambert" type="FF_SPHERE">
            <Position x="0.0" y="-42.0" z="-10.0"/>
            <Radius>40</Radius>
            <Material type="Lambert">
                <Albedo r="0" g="1" b="0" a="1"/>
            </Material>
        </Object>

        <!--A Metallic Sphere-->
        <Object id="Metal" type="FF_SPHERE">
            <Position x="4.5" y="3.25" z="-10.0" />
            <Radius>2.5/</Radius>
            <Material type="Metal">
                <Albedo r="0" g="0" b="1" a="1" />
                <Fuzziness>0.5</Fuzziness>
            </Material>
        </Object>
        <!--A Dielectric Sphere-->
        <Object id="Dielectric" type="FF_SPHERE">
            <Position x="4.5" y="-3.25" z="-10.0" />
            <Radius>2.5/</Radius>
            <Material type="Dielectric">
                <Tint r="1" g="0" b="1" a="1"/>
                <IR>3.0</IR>
                <Fresnel>1.0</Fresnel>
            </Material>
        </Object>
    </Scene>
</World>

An offline Path-Tracer Written in C++.

Download v0.3a