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ZealOS/docs/Demo/Graphics/Bounce.CC.html
TomAwezome dd959b40c5 Add progress bar to DVDImageRead.
2021-08-17 02:47:37 -04:00

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
<meta name="generator" content="ZealOS V1.00">
<style type="text/css">
body {background-color:#fef1f0;}
.cF0{color:#000000;background-color:#fef1f0;}
.cF1{color:#0148a4;background-color:#fef1f0;}
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</style>
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<body>
<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//Uses </span><a href="https://zeal-operating-system.github.io/ZealOS/Demo/Lectures/FixedPoint.CC.html#l1"><span class=cF4>fixed-point-arithmetic</span></a><span class=cF2>.</span><span class=cF0>
<a name="l2"></a>
<a name="l3"></a></span><span class=cF9>I64</span><span class=cF0> x[</span><span class=cFE>16</span><span class=cF0>], y[</span><span class=cFE>16</span><span class=cF0>], dx[</span><span class=cFE>16</span><span class=cF0>], dy[</span><span class=cFE>16</span><span class=cF0>];
<a name="l4"></a>
<a name="l5"></a></span><span class=cF1>U0</span><span class=cF0> Init()
<a name="l6"></a>{
<a name="l7"></a> </span><span class=cF9>I64</span><span class=cF0> i;
<a name="l8"></a> </span><span class=cF1>F64</span><span class=cF0> theta;
<a name="l9"></a>
<a name="l10"></a> </span><span class=cF5>MemSet</span><span class=cF0>(x, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>x</span><span class=cF7>)</span><span class=cF0>);
<a name="l11"></a> </span><span class=cF5>MemSet</span><span class=cF0>(y, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cF1>sizeof</span><span class=cF7>(</span><span class=cF0>y</span><span class=cF7>)</span><span class=cF0>);
<a name="l12"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cFE>16</span><span class=cF0>; i++)
<a name="l13"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l14"></a> theta = </span><span class=cF5>Rand</span><span class=cF0>*</span><span class=cFE>2</span><span class=cF0>*</span><span class=cF3>pi</span><span class=cF0>;
<a name="l15"></a> dx[i] = </span><span class=cF3>I32_MAX</span><span class=cF0> * </span><span class=cF5>Cos</span><span class=cF0>(theta);
<a name="l16"></a> dy[i] = </span><span class=cF3>I32_MAX</span><span class=cF0> * </span><span class=cF5>Sin</span><span class=cF0>(theta);
<a name="l17"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l18"></a>}
<a name="l19"></a>
<a name="l20"></a></span><span class=cF1>U0</span><span class=cF0> Bounce()
<a name="l21"></a>{
<a name="l22"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc = </span><span class=cF5>DCAlias</span><span class=cF0>;
<a name="l23"></a> </span><span class=cF9>I64</span><span class=cF0> i, ch;
<a name="l24"></a>
<a name="l25"></a> Init;
<a name="l26"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l27"></a> </span><span class=cF7>{</span><span class=cF2>//Catch &lt;CTRL-ALT-c&gt;</span><span class=cF0>
<a name="l28"></a> </span><span class=cF1>do</span><span class=cF0>
<a name="l29"></a> {
<a name="l30"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; </span><span class=cFE>16</span><span class=cF0>; i++)
<a name="l31"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l32"></a> dc-&gt;color =i;
<a name="l33"></a> </span><span class=cF5>GrPlot</span><span class=cF0>(dc, x[i].i32[</span><span class=cFE>1</span><span class=cF0>], y[i].i32[</span><span class=cFE>1</span><span class=cF0>]);
<a name="l34"></a> x[i] += dx[i];
<a name="l35"></a> y[i] += dy[i];
<a name="l36"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF7>(</span><span class=cFE>0</span><span class=cF0> &lt;= x[i] &lt; </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_width &lt;&lt; </span><span class=cFE>32</span><span class=cF7>)</span><span class=cF0>)
<a name="l37"></a> {
<a name="l38"></a> x[i] -= dx[i];
<a name="l39"></a> dx[i] = -dx[i];
<a name="l40"></a> }
<a name="l41"></a> </span><span class=cF1>if</span><span class=cF0> (!</span><span class=cF7>(</span><span class=cFE>0</span><span class=cF0> &lt;= y[i] &lt; </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_height &lt;&lt; </span><span class=cFE>32</span><span class=cF7>)</span><span class=cF0>)
<a name="l42"></a> {
<a name="l43"></a> y[i] -= dy[i];
<a name="l44"></a> dy[i] = -dy[i];
<a name="l45"></a> }
<a name="l46"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l47"></a> </span><span class=cF5>Yield</span><span class=cF0>;
<a name="l48"></a> }
<a name="l49"></a> </span><span class=cF1>while</span><span class=cF0> (!</span><span class=cF7>(</span><span class=cF0>ch = </span><span class=cF5>CharScan</span><span class=cF7>)</span><span class=cF0> || </span><span class=cF7>(</span><span class=cF0>ch != </span><span class=cF3>CH_SHIFT_ESC</span><span class=cF0> &amp;&amp; ch != </span><span class=cF3>CH_ESC</span><span class=cF7>)</span><span class=cF0>);
<a name="l50"></a>
<a name="l51"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l52"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l53"></a> </span><span class=cF5>PutExcept</span><span class=cF0>;
<a name="l54"></a> </span><span class=cF5>DCFill</span><span class=cF0>(dc);
<a name="l55"></a> </span><span class=cF5>DCDel</span><span class=cF0>(dc);
<a name="l56"></a>}
<a name="l57"></a>
<a name="l58"></a>Bounce;
</span></pre></body>
</html>
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