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diff --git a/manuals/chickadee/Models.html b/manuals/chickadee/Models.html deleted file mode 100644 index 4d319a1..0000000 --- a/manuals/chickadee/Models.html +++ /dev/null @@ -1,167 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -<html> -<!-- Copyright (C) 2017-2023 David Thompson dthompson2@worcester.edu - -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 -or any later version published by the Free Software Foundation; -with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. -A copy of the license is included in the section entitled "GNU -Free Documentation License". - -A copy of the license is also available from the Free Software -Foundation Web site at http://www.gnu.org/licenses/fdl.html. - - -* Chickadee: (chickadee). Game programming toolkit for Guile. - -The document was typeset with -http://www.texinfo.org/ (GNU Texinfo). - --> -<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ --> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> -<title>Models (The Chickadee Game Toolkit)</title> - -<meta name="description" content="Models (The Chickadee Game Toolkit)" /> -<meta name="keywords" content="Models (The Chickadee Game Toolkit)" /> -<meta name="resource-type" content="document" /> -<meta name="distribution" content="global" /> -<meta name="Generator" content="makeinfo" /> -<link href="index.html" rel="start" title="Top" /> -<link href="Index.html" rel="index" title="Index" /> -<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents" /> -<link href="Graphics.html" rel="up" title="Graphics" /> -<link href="Lights.html" rel="next" title="Lights" /> -<link href="Tile-Maps.html" rel="prev" title="Tile Maps" /> -<style type="text/css"> -<!-- -a.summary-letter {text-decoration: none} -blockquote.indentedblock {margin-right: 0em} -div.display {margin-left: 3.2em} -div.example {margin-left: 3.2em} -div.lisp {margin-left: 3.2em} -kbd {font-style: oblique} -pre.display {font-family: inherit} -pre.format {font-family: inherit} -pre.menu-comment {font-family: serif} -pre.menu-preformatted {font-family: serif} -span.nolinebreak {white-space: nowrap} -span.roman {font-family: initial; font-weight: normal} -span.sansserif {font-family: sans-serif; font-weight: normal} -ul.no-bullet {list-style: none} -@media (min-width: 1140px) { - body { - margin-left: 14rem; - margin-right: 4rem; - max-width: 52rem; - } -} - -@media (min-width: 800px) and (max-width: 1140px) { - body { - margin-left: 6rem; - margin-right: 4rem; - max-width: 52rem; - } -} - -@media (max-width: 800px) { - body { - margin: 1rem; - } -} - ---> -</style> -<link rel="stylesheet" type="text/css" href="https://dthompson.us/css/dthompson.css" /> - - -</head> - -<body lang="en"> -<span id="Models"></span><div class="header"> -<p> -Next: <a href="Lights.html" accesskey="n" rel="next">Lights</a>, Previous: <a href="Tile-Maps.html" accesskey="p" rel="prev">Tile Maps</a>, Up: <a href="Graphics.html" accesskey="u" rel="up">Graphics</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p> -</div> -<hr /> -<span id="Models-1"></span><h4 class="subsection">5.3.8 Models</h4> - -<p><em>Disclaimer: Chickadee is alpha software, but 3D model support is -even more alpha than that. There are many missing features in both -the model loading and rendering components, so set your expectations -accordingly!</em> -</p> -<p>The <code>(chickadee graphics model)</code> module provides procedures to -load and render 3D models in the classic OBJ and more modern glTF 2.0 -formats. -</p> -<p>Here’s some basic boilerplate to render a 3D model: -</p> -<div class="lisp"> -<pre class="lisp"><span class="syntax-open">(</span><span class="syntax-symbol">use-modules</span> <span class="syntax-open">(</span><span class="syntax-symbol">chickadee</span> <span class="syntax-symbol">graphics</span> <span class="syntax-symbol">light</span><span class="syntax-close">)</span> - <span class="syntax-open">(</span><span class="syntax-symbol">chickadee</span> <span class="syntax-symbol">graphics</span> <span class="syntax-symbol">model</span><span class="syntax-close">)</span> - <span class="syntax-open">(</span><span class="syntax-symbol">chickadee</span> <span class="syntax-symbol">graphics</span> <span class="syntax-symbol">skybox</span><span class="syntax-close">)</span><span class="syntax-close">)</span> - -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">model</span> <span class="syntax-open">(</span><span class="syntax-symbol">load-gltf</span> <span class="syntax-string">"Suzanne.gltf"</span><span class="syntax-close">)</span><span class="syntax-close">)</span> -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">camera-position</span> <span class="syntax-open">(</span><span class="syntax-symbol">vec3</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">3.0</span><span class="syntax-close">)</span><span class="syntax-close">)</span> -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">world</span> <span class="syntax-open">(</span><span class="syntax-symbol">make-identity-matrix4</span><span class="syntax-close">)</span><span class="syntax-close">)</span> -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">view</span> <span class="syntax-open">(</span><span class="syntax-symbol">look-at</span> <span class="syntax-symbol">camera-position</span> <span class="syntax-open">(</span><span class="syntax-symbol">vec3</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">0.0</span><span class="syntax-close">)</span> <span class="syntax-open">(</span><span class="syntax-symbol">vec3</span> <span class="syntax-symbol">0.0</span> <span class="syntax-symbol">1.0</span> <span class="syntax-symbol">0.0</span><span class="syntax-close">)</span><span class="syntax-close">)</span><span class="syntax-close">)</span> -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-symbol">projection</span> <span class="syntax-open">(</span><span class="syntax-symbol">perspective-projection</span> <span class="syntax-open">(</span><span class="syntax-symbol">/</span> <span class="syntax-symbol">pi</span> <span class="syntax-symbol">3.0</span><span class="syntax-close">)</span> <span class="syntax-open">(</span><span class="syntax-symbol">/</span> <span class="syntax-symbol">4.0</span> <span class="syntax-symbol">3.0</span><span class="syntax-close">)</span> <span class="syntax-symbol">0.1</span> <span class="syntax-symbol">5.0</span><span class="syntax-close">)</span><span class="syntax-close">)</span> - -<span class="syntax-open">(</span><span class="syntax-special">define</span> <span class="syntax-open">(</span><span class="syntax-symbol">draw</span> <span class="syntax-symbol">alpha</span><span class="syntax-close">)</span> - <span class="syntax-open">(</span><span class="syntax-symbol">with-projection</span> <span class="syntax-symbol">projection</span> - <span class="syntax-open">(</span><span class="syntax-symbol">draw-model</span> <span class="syntax-symbol">model</span> <span class="syntax-symbol">world</span> <span class="syntax-symbol">view</span> <span class="syntax-symbol">camera-position</span> -</pre></div> - -<dl> -<dt id="index-load_002dobj">Procedure: <strong>load-obj</strong> <em>file-name</em></dt> -<dd><p>Load the OBJ formatted model in <var>file-name</var> and return a 3D model -object. -</p> -<p>OBJ models are rendered using a Phong lighting model, which is a -work-in-progress. -</p></dd></dl> - -<dl> -<dt id="index-load_002dgltf">Procedure: <strong>load-gltf</strong> <em>file-name</em></dt> -<dd><p>Load the glTF 2.0 formatted model in <var>file-name</var> and return a 3D -model object. -</p> -<p>glTF models are rendered using a physically based lighting model, -which is currently a stub to be implemented later. -</p></dd></dl> - -<dl> -<dt id="index-model_003f">Procedure: <strong>model?</strong> <em>obj</em></dt> -<dd><p>Return <code>#t</code> if <var>obj</var> is a 3D model. -</p></dd></dl> - -<dl> -<dt id="index-draw_002dmodel">Procedure: <strong>draw-model</strong> <em>model [#:model-matrix] [#:view-matrix] [#:camera-position (vec3 0 0 0)] [#:skybox] [#:lights '()]</em></dt> -<dd> -<p>Render <var>model</var> with the transformation matrices <var>model-matrix</var> -and <var>view-matrix</var> applied. <var>camera-position</var> is the world -position of the camera, for correct specular lighting calculations. -<var>skybox</var> is used to apply ambient lighting to the model. -<var>lights</var> contains all of the dynamic lights (see <a href="Lights.html">Lights</a>) that -should have an effect on the model. -</p></dd></dl> - -<p>Models are composed of simpler data types: meshes, primitives, and -materials. Let’s start with materials. A material controls the -appearance of a 3D object. Is the object a rough stone? Or maybe a -smooth metal? Materials control all of this and more. -</p> -<p>There are two types of materials in Chickadee: Phong and PBR. -</p> -<hr /> -<div class="header"> -<p> -Next: <a href="Lights.html" accesskey="n" rel="next">Lights</a>, Previous: <a href="Tile-Maps.html" accesskey="p" rel="prev">Tile Maps</a>, Up: <a href="Graphics.html" accesskey="u" rel="up">Graphics</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html" title="Index" rel="index">Index</a>]</p> -</div> - - - -</body> -</html> |