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<title>Mu - linux/apps/raytracing/vec.mu</title>
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<a href='https://github.com/akkartik/mu/blob/main/linux/apps/raytracing/vec.mu'>https://github.com/akkartik/mu/blob/main/linux/apps/raytracing/vec.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="PreProc">type</span> vec3 <span class="Delimiter">{</span>
<span id="L2" class="LineNr"> 2 </span> x: float
<span id="L3" class="LineNr"> 3 </span> y: float
<span id="L4" class="LineNr"> 4 </span> z: float
<span id="L5" class="LineNr"> 5 </span><span class="Delimiter">}</span>
<span id="L6" class="LineNr"> 6 </span>
<span id="L7" class="LineNr"> 7 </span><span class="PreProc">fn</span> <span class="muFunction">print-vec3</span> <a href='../../405screen.mu.html#L9'>screen</a>: (addr <a href='../../405screen.mu.html#L9'>screen</a>), _v: (addr vec3) <span class="Delimiter">{</span>
<span id="L8" class="LineNr"> 8 </span> <span class="PreProc">var</span> v/<span class="muRegEsi">esi</span>: (addr vec3) <span class="Special"><-</span> copy _v
<span id="L9" class="LineNr"> 9 </span> <a href='../../405screen.mu.html#L169'>print-string</a> <a href='../../405screen.mu.html#L9'>screen</a>, <span class="Constant">"("</span>
<span id="L10" class="LineNr"> 10 </span> <span class="PreProc">var</span> tmp/eax: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, x
<span id="L11" class="LineNr"> 11 </span> <a href='../../409print-float-hex.mu.html#L118'>print-float-hex</a> <a href='../../405screen.mu.html#L9'>screen</a>, *tmp
<span id="L12" class="LineNr"> 12 </span> <a href='../../405screen.mu.html#L169'>print-string</a> <a href='../../405screen.mu.html#L9'>screen</a>, <span class="Constant">", "</span>
<span id="L13" class="LineNr"> 13 </span> tmp <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, y
<span id="L14" class="LineNr"> 14 </span> <a href='../../409print-float-hex.mu.html#L118'>print-float-hex</a> <a href='../../405screen.mu.html#L9'>screen</a>, *tmp
<span id="L15" class="LineNr"> 15 </span> <a href='../../405screen.mu.html#L169'>print-string</a> <a href='../../405screen.mu.html#L9'>screen</a>, <span class="Constant">", "</span>
<span id="L16" class="LineNr"> 16 </span> tmp <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, z
<span id="L17" class="LineNr"> 17 </span> <a href='../../409print-float-hex.mu.html#L118'>print-float-hex</a> <a href='../../405screen.mu.html#L9'>screen</a>, *tmp
<span id="L18" class="LineNr"> 18 </span> <a href='../../405screen.mu.html#L169'>print-string</a> <a href='../../405screen.mu.html#L9'>screen</a>, <span class="Constant">")"</span>
<span id="L19" class="LineNr"> 19 </span><span class="Delimiter">}</span>
<span id="L20" class="LineNr"> 20 </span>
<span id="L21" class="LineNr"> 21 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-add-to</span> _v1: (addr vec3), _v2: (addr vec3) <span class="Delimiter">{</span>
<span id="L22" class="LineNr"> 22 </span> <span class="PreProc">var</span> v1/<span class="muRegEdi">edi</span>: (addr vec3) <span class="Special"><-</span> copy _v1
<span id="L23" class="LineNr"> 23 </span> <span class="PreProc">var</span> v2/<span class="muRegEsi">esi</span>: (addr vec3) <span class="Special"><-</span> copy _v2
<span id="L24" class="LineNr"> 24 </span> <span class="muComment"># v1.x += v2.x</span>
<span id="L25" class="LineNr"> 25 </span> <span class="PreProc">var</span> arg1/eax: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v1, x
<span id="L26" class="LineNr"> 26 </span> <span class="PreProc">var</span> arg2/<span class="muRegEcx">ecx</span>: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v2, x
<span id="L27" class="LineNr"> 27 </span> <span class="PreProc">var</span> result/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> copy *arg1
<span id="L28" class="LineNr"> 28 </span> result <span class="Special"><-</span> add *arg2
<span id="L29" class="LineNr"> 29 </span> copy-to *arg1, result
<span id="L30" class="LineNr"> 30 </span> <span class="muComment"># v1.y += v2.y</span>
<span id="L31" class="LineNr"> 31 </span> arg1 <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v1, y
<span id="L32" class="LineNr"> 32 </span> arg2 <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v2, y
<span id="L33" class="LineNr"> 33 </span> result <span class="Special"><-</span> copy *arg1
<span id="L34" class="LineNr"> 34 </span> result <span class="Special"><-</span> add *arg2
<span id="L35" class="LineNr"> 35 </span> copy-to *arg1, result
<span id="L36" class="LineNr"> 36 </span> <span class="muComment"># v1.z += v2.z</span>
<span id="L37" class="LineNr"> 37 </span> arg1 <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v1, z
<span id="L38" class="LineNr"> 38 </span> arg2 <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v2, z
<span id="L39" class="LineNr"> 39 </span> result <span class="Special"><-</span> copy *arg1
<span id="L40" class="LineNr"> 40 </span> result <span class="Special"><-</span> add *arg2
<span id="L41" class="LineNr"> 41 </span> copy-to *arg1, result
<span id="L42" class="LineNr"> 42 </span><span class="Delimiter">}</span>
<span id="L43" class="LineNr"> 43 </span>
<span id="L44" class="LineNr"> 44 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-subtract-from</span> v1: (addr vec3), v2: (addr vec3) <span class="Delimiter">{</span>
<span id="L45" class="LineNr"> 45 </span> <span class="PreProc">var</span> tmp-storage: vec3
<span id="L46" class="LineNr"> 46 </span> <span class="PreProc">var</span> tmp/eax: (addr vec3) <span class="Special"><-</span> address tmp-storage
<span id="L47" class="LineNr"> 47 </span> copy-object v2, tmp
<span id="L48" class="LineNr"> 48 </span> vec3-negate tmp
<span id="L49" class="LineNr"> 49 </span> vec3-add-to v1, tmp
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span>
<span id="L52" class="LineNr"> 52 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-negate</span> v: (addr vec3) <span class="Delimiter">{</span>
<span id="L53" class="LineNr"> 53 </span> <span class="PreProc">var</span> negative-one/eax: int <span class="Special"><-</span> copy <span class="Constant">-1</span>
<span id="L54" class="LineNr"> 54 </span> <span class="PreProc">var</span> negative-one-f/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> convert negative-one
<span id="L55" class="LineNr"> 55 </span> vec3-scale-up v, negative-one-f
<span id="L56" class="LineNr"> 56 </span><span class="Delimiter">}</span>
<span id="L57" class="LineNr"> 57 </span>
<span id="L58" class="LineNr"> 58 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-scale-up</span> _v: (addr vec3), f: float <span class="Delimiter">{</span>
<span id="L59" class="LineNr"> 59 </span> <span class="PreProc">var</span> v/<span class="muRegEdi">edi</span>: (addr vec3) <span class="Special"><-</span> copy _v
<span id="L60" class="LineNr"> 60 </span> <span class="muComment"># v.x *= f</span>
<span id="L61" class="LineNr"> 61 </span> <span class="PreProc">var</span> dest/eax: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, x
<span id="L62" class="LineNr"> 62 </span> <span class="PreProc">var</span> result/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> copy *dest
<span id="L63" class="LineNr"> 63 </span> result <span class="Special"><-</span> multiply f
<span id="L64" class="LineNr"> 64 </span> copy-to *dest, result
<span id="L65" class="LineNr"> 65 </span> <span class="muComment"># v.y *= f</span>
<span id="L66" class="LineNr"> 66 </span> dest <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, y
<span id="L67" class="LineNr"> 67 </span> result <span class="Special"><-</span> copy *dest
<span id="L68" class="LineNr"> 68 </span> result <span class="Special"><-</span> multiply f
<span id="L69" class="LineNr"> 69 </span> copy-to *dest, result
<span id="L70" class="LineNr"> 70 </span> <span class="muComment"># v.z *= f</span>
<span id="L71" class="LineNr"> 71 </span> dest <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, z
<span id="L72" class="LineNr"> 72 </span> result <span class="Special"><-</span> copy *dest
<span id="L73" class="LineNr"> 73 </span> result <span class="Special"><-</span> multiply f
<span id="L74" class="LineNr"> 74 </span> copy-to *dest, result
<span id="L75" class="LineNr"> 75 </span><span class="Delimiter">}</span>
<span id="L76" class="LineNr"> 76 </span>
<span id="L77" class="LineNr"> 77 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-scale-down</span> _v: (addr vec3), f: float <span class="Delimiter">{</span>
<span id="L78" class="LineNr"> 78 </span> <span class="PreProc">var</span> v/<span class="muRegEdi">edi</span>: (addr vec3) <span class="Special"><-</span> copy _v
<span id="L79" class="LineNr"> 79 </span> <span class="muComment"># v.x /= f</span>
<span id="L80" class="LineNr"> 80 </span> <span class="PreProc">var</span> dest/eax: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, x
<span id="L81" class="LineNr"> 81 </span> <span class="PreProc">var</span> result/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> copy *dest
<span id="L82" class="LineNr"> 82 </span> result <span class="Special"><-</span> divide f
<span id="L83" class="LineNr"> 83 </span> copy-to *dest, result
<span id="L84" class="LineNr"> 84 </span> <span class="muComment"># v.y /= f</span>
<span id="L85" class="LineNr"> 85 </span> dest <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, y
<span id="L86" class="LineNr"> 86 </span> result <span class="Special"><-</span> copy *dest
<span id="L87" class="LineNr"> 87 </span> result <span class="Special"><-</span> divide f
<span id="L88" class="LineNr"> 88 </span> copy-to *dest, result
<span id="L89" class="LineNr"> 89 </span> <span class="muComment"># v.z /= f</span>
<span id="L90" class="LineNr"> 90 </span> dest <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, z
<span id="L91" class="LineNr"> 91 </span> result <span class="Special"><-</span> copy *dest
<span id="L92" class="LineNr"> 92 </span> result <span class="Special"><-</span> divide f
<span id="L93" class="LineNr"> 93 </span> copy-to *dest, result
<span id="L94" class="LineNr"> 94 </span><span class="Delimiter">}</span>
<span id="L95" class="LineNr"> 95 </span>
<span id="L96" class="LineNr"> 96 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-unit</span> in: (addr vec3), out: (addr vec3) <span class="Delimiter">{</span>
<span id="L97" class="LineNr"> 97 </span> <span class="PreProc">var</span> len/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> vec3-length in
<span id="L98" class="LineNr"> 98 </span><span class="CommentedCode">#? print-string 0, "len: "</span>
<span id="L99" class="LineNr"> 99 </span><span class="CommentedCode">#? print-float-hex 0, len</span>
<span id="L100" class="LineNr">100 </span><span class="CommentedCode">#? print-string 0, "\n"</span>
<span id="L101" class="LineNr">101 </span> copy-object in, out
<span id="L102" class="LineNr">102 </span> vec3-scale-down out, len
<span id="L103" class="LineNr">103 </span><span class="Delimiter">}</span>
<span id="L104" class="LineNr">104 </span>
<span id="L105" class="LineNr">105 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-length</span> v: (addr vec3)<span class="PreProc"> -> </span>_/<span class="Constant">xmm0</span>: float <span class="Delimiter">{</span>
<span id="L106" class="LineNr">106 </span> <span class="PreProc">var</span> result/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> vec3-length-squared v
<span id="L107" class="LineNr">107 </span> result <span class="Special"><-</span> square-root result
<span id="L108" class="LineNr">108 </span> <span class="PreProc">return</span> result
<span id="L109" class="LineNr">109 </span><span class="Delimiter">}</span>
<span id="L110" class="LineNr">110 </span>
<span id="L111" class="LineNr">111 </span><span class="PreProc">fn</span> <span class="muFunction">vec3-length-squared</span> _v: (addr vec3)<span class="PreProc"> -> </span>_/<span class="Constant">xmm0</span>: float <span class="Delimiter">{</span>
<span id="L112" class="LineNr">112 </span> <span class="PreProc">var</span> v/<span class="muRegEsi">esi</span>: (addr vec3) <span class="Special"><-</span> copy _v
<span id="L113" class="LineNr">113 </span> <span class="muComment"># result = v.x * v.x</span>
<span id="L114" class="LineNr">114 </span> <span class="PreProc">var</span> src/eax: (addr float) <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, x
<span id="L115" class="LineNr">115 </span> <span class="PreProc">var</span> tmp/<span class="Constant">xmm1</span>: float <span class="Special"><-</span> copy *src
<span id="L116" class="LineNr">116 </span> tmp <span class="Special"><-</span> multiply tmp
<span id="L117" class="LineNr">117 </span> <span class="PreProc">var</span> result/<span class="Constant">xmm0</span>: float <span class="Special"><-</span> copy tmp
<span id="L118" class="LineNr">118 </span> <span class="muComment"># result += v.y * v.y</span>
<span id="L119" class="LineNr">119 </span> src <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, y
<span id="L120" class="LineNr">120 </span> tmp <span class="Special"><-</span> copy *src
<span id="L121" class="LineNr">121 </span> tmp <span class="Special"><-</span> multiply tmp
<span id="L122" class="LineNr">122 </span> result <span class="Special"><-</span> add tmp
<span id="L123" class="LineNr">123 </span> <span class="muComment"># result += v.z * v.z</span>
<span id="L124" class="LineNr">124 </span> src <span class="Special"><-</span> <a href='../../131table.subx.html#L26'>get</a> v, z
<span id="L125" class="LineNr">125 </span> tmp <span class="Special"><-</span> copy *src
<span id="L126" class="LineNr">126 </span> tmp <span class="Special"><-</span> multiply tmp
<span id="L127" class="LineNr">127 </span> result <span class="Special"><-</span> add tmp
<span id="L128" class="LineNr">128 </span> <span class="PreProc">return</span> result
<span id="L129" class="LineNr">129 </span><span class="Delimiter">}</span>
<span id="L130" class="LineNr">130 </span>
<span id="L131" class="LineNr">131 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='vec.mu.html#L131'>vec3-dot</a></span> _v1: (addr vec3), _v2: (addr vec3)<span class="PreProc"> -> </span>_/<span class="Constant">xmm0</span>: float <span class="Delimiter">{</span>
<span id="L132" class="LineNr">132 </span><span class="Delimiter">}</span>
<span id="L133" class="LineNr">133 </span>
<span id="L134" class="LineNr">134 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='vec.mu.html#L134'>vec3-cross</a></span> _v1: (addr vec3), _v2: (addr vec3), out: (addr vec3) <span class="Delimiter">{</span>
<span id="L135" class="LineNr">135 </span><span class="Delimiter">}</span>
</pre>
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