ZealOS/docs/Demo/Graphics/PoleZeros.CC.html
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<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> ZEROS_NUM </span><span class=cFE>2</span><span class=cF0>
<a name="l2"></a></span><span class=cF9>Complex</span><span class=cF0> zeros[ZEROS_NUM] = {</span><span class=cF7>{</span><span class=cFE>10</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF7>}</span><span class=cF0>, </span><span class=cF7>{</span><span class=cF0>-</span><span class=cFE>30</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF7>}</span><span class=cF0>};
<a name="l3"></a>#</span><span class=cF1>define</span><span class=cF0> POLES_NUM </span><span class=cFE>2</span><span class=cF0>
<a name="l4"></a></span><span class=cF9>Complex</span><span class=cF0> poles[POLES_NUM] = {</span><span class=cF7>{</span><span class=cF0>-</span><span class=cFE>20</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>, -</span><span class=cFE>15</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF7>}</span><span class=cF0>, </span><span class=cF7>{</span><span class=cF0>-</span><span class=cFE>20</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>15</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF7>}</span><span class=cF0>};
<a name="l5"></a>
<a name="l6"></a></span><span class=cF1>F64</span><span class=cF0> scale;
<a name="l7"></a>
<a name="l8"></a></span><span class=cF9>Complex</span><span class=cF0> *PoleZeroFind(</span><span class=cF9>I64</span><span class=cF0> x, </span><span class=cF9>I64</span><span class=cF0> y)
<a name="l9"></a>{
<a name="l10"></a> </span><span class=cF9>I64</span><span class=cF0> i;
<a name="l11"></a> </span><span class=cF1>F64</span><span class=cF0> dd, best_dd = </span><span class=cF3>F64_MAX</span><span class=cF0>;
<a name="l12"></a> </span><span class=cF9>Complex</span><span class=cF0> *res = </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l13"></a>
<a name="l14"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; POLES_NUM; i++)
<a name="l15"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l16"></a> dd = </span><span class=cF5>Sqr</span><span class=cF0>(poles[i].x - x) + </span><span class=cF5>Sqr</span><span class=cF0>(poles[i].y - y);
<a name="l17"></a> </span><span class=cF1>if</span><span class=cF0> (dd &lt; best_dd)
<a name="l18"></a> {
<a name="l19"></a> best_dd = dd;
<a name="l20"></a> res = &amp;poles[i];
<a name="l21"></a> }
<a name="l22"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l23"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; ZEROS_NUM; i++)
<a name="l24"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l25"></a> dd = </span><span class=cF5>Sqr</span><span class=cF0>(zeros[i].x - x) + </span><span class=cF5>Sqr</span><span class=cF0>(zeros[i].y - y);
<a name="l26"></a> </span><span class=cF1>if</span><span class=cF0> (dd &lt; best_dd)
<a name="l27"></a> {
<a name="l28"></a> best_dd = dd;
<a name="l29"></a> res = &amp;zeros[i];
<a name="l30"></a> }
<a name="l31"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l32"></a>
<a name="l33"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l34"></a>}
<a name="l35"></a>
<a name="l36"></a></span><span class=cF1>F64</span><span class=cF0> </span><span class=cF5>F</span><span class=cF0>(</span><span class=cF9>Complex</span><span class=cF0> *x)
<a name="l37"></a>{
<a name="l38"></a> </span><span class=cF1>F64</span><span class=cF0> m, a;
<a name="l39"></a> </span><span class=cF9>Complex</span><span class=cF0> num, denom, n1;
<a name="l40"></a>
<a name="l41"></a> </span><span class=cF5>CPoly</span><span class=cF0>(&amp;num, ZEROS_NUM, zeros, x);
<a name="l42"></a> </span><span class=cF5>CPoly</span><span class=cF0>(&amp;denom, POLES_NUM, poles, x);
<a name="l43"></a> </span><span class=cF5>CDiv</span><span class=cF0>(&amp;n1, &amp;num, &amp;denom);
<a name="l44"></a>
<a name="l45"></a> </span><span class=cF5>R2P</span><span class=cF0>(&amp;m, &amp;a, n1.x, n1.y);
<a name="l46"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cFB>mouse</span><span class=cF0>.rb)
<a name="l47"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>pi</span><span class=cF0> + a;
<a name="l48"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l49"></a> </span><span class=cF1>return</span><span class=cF0> m;
<a name="l50"></a>}
<a name="l51"></a>
<a name="l52"></a></span><span class=cF1>F64</span><span class=cF0> MPDraw(</span><span class=cF9>CTask</span><span class=cF0> *task)
<a name="l53"></a>{
<a name="l54"></a> </span><span class=cF9>Complex</span><span class=cF0> xx;
<a name="l55"></a> </span><span class=cF9>I64</span><span class=cF0> x, y, w = task-&gt;pix_width, h = task-&gt;pix_height, cx = w / </span><span class=cFE>2</span><span class=cF0>, cy = h / </span><span class=cFE>2</span><span class=cF0>,
<a name="l56"></a> lo = </span><span class=cF5>Gs</span><span class=cF0>-&gt;num * h / </span><span class=cFB>mp_count</span><span class=cF0>, hi = (</span><span class=cF5>Gs</span><span class=cF0>-&gt;num + </span><span class=cFE>1</span><span class=cF0>) * h / </span><span class=cFB>mp_count</span><span class=cF0>;
<a name="l57"></a> </span><span class=cF1>F64</span><span class=cF0> yy, y_total = </span><span class=cFE>0</span><span class=cF0>;
<a name="l58"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc = </span><span class=cF5>DCAlias</span><span class=cF0>(, task);
<a name="l59"></a>
<a name="l60"></a> </span><span class=cF1>for</span><span class=cF0> (y = lo; y &lt; hi; y++)
<a name="l61"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l62"></a> </span><span class=cF1>for</span><span class=cF0> (x = </span><span class=cFE>0</span><span class=cF0>; x &lt; w; x++)
<a name="l63"></a> {
<a name="l64"></a> </span><span class=cF5>CEqu</span><span class=cF0>(&amp;xx, x - cx, cy - y);
<a name="l65"></a> yy = scale * </span><span class=cF5>F</span><span class=cF0>(&amp;xx);
<a name="l66"></a> dc-&gt;color = </span><span class=cF5>Clamp</span><span class=cF0>(yy, </span><span class=cFE>0</span><span class=cF0>, </span><span class=cFE>14</span><span class=cF0>);
<a name="l67"></a> y_total += </span><span class=cF5>Clamp</span><span class=cF0>(yy, -</span><span class=cFE>14</span><span class=cF0>, </span><span class=cFE>14</span><span class=cF0>);
<a name="l68"></a> </span><span class=cF5>GrPlot</span><span class=cF0>(dc, x, y);
<a name="l69"></a> }
<a name="l70"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l71"></a> </span><span class=cF5>DCDel</span><span class=cF0>(dc);
<a name="l72"></a>
<a name="l73"></a> </span><span class=cF1>return</span><span class=cF0> y_total;
<a name="l74"></a>}
<a name="l75"></a>
<a name="l76"></a></span><span class=cF1>U0</span><span class=cF0> Draw()
<a name="l77"></a>{
<a name="l78"></a> </span><span class=cF9>CJob</span><span class=cF0> *tmpm[</span><span class=cF3>MP_PROCESSORS_NUM</span><span class=cF0>];
<a name="l79"></a> </span><span class=cF1>F64</span><span class=cF0> y_total, old_y_total = </span><span class=cF3>F64_MAX</span><span class=cF0>;
<a name="l80"></a> </span><span class=cF9>I64</span><span class=cF0> i, w = </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_width, h = </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_height, cx = w / </span><span class=cFE>2</span><span class=cF0>, cy = h / </span><span class=cFE>2</span><span class=cF0>;
<a name="l81"></a> </span><span class=cF9>CDC</span><span class=cF0> *dc = </span><span class=cF5>DCAlias</span><span class=cF0>;
<a name="l82"></a>
<a name="l83"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF3>TRUE</span><span class=cF0>)
<a name="l84"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l85"></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=cFB>mp_count</span><span class=cF0>; i++)
<a name="l86"></a> tmpm[i] = </span><span class=cF5>JobQueue</span><span class=cF0>(&amp;MPDraw, </span><span class=cF5>Fs</span><span class=cF0>, i, </span><span class=cFE>0</span><span class=cF0>);
<a name="l87"></a> y_total = </span><span class=cFE>0</span><span class=cF0>;
<a name="l88"></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=cFB>mp_count</span><span class=cF0>; i++)
<a name="l89"></a> y_total += </span><span class=cF5>JobResGet</span><span class=cF0>(tmpm[i])(</span><span class=cF1>F64</span><span class=cF0>);
<a name="l90"></a>
<a name="l91"></a> </span><span class=cF1>if</span><span class=cF0> (!y_total)
<a name="l92"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l93"></a> scale *= </span><span class=cFE>7</span><span class=cF0> * </span><span class=cF3>GR_WIDTH</span><span class=cF0> * </span><span class=cF3>GR_HEIGHT</span><span class=cF0> / y_total;
<a name="l94"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>Abs</span><span class=cF7>(</span><span class=cF0>y_total - old_y_total</span><span class=cF7>)</span><span class=cF0> &lt; </span><span class=cFE>1</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0> * </span><span class=cF3>GR_WIDTH</span><span class=cF0> * </span><span class=cF3>GR_HEIGHT</span><span class=cF0>)
<a name="l95"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l96"></a> old_y_total = y_total;
<a name="l97"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l98"></a> dc-&gt;color = </span><span class=cFE>15</span><span class=cF0>;
<a name="l99"></a> </span><span class=cF5>GrLine</span><span class=cF0>(dc, </span><span class=cFE>0</span><span class=cF0>, cy, w, cy);
<a name="l100"></a> </span><span class=cF5>GrLine</span><span class=cF0>(dc, cx, </span><span class=cFE>0</span><span class=cF0>, cx, h);
<a name="l101"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; ZEROS_NUM; i++)
<a name="l102"></a> </span><span class=cF5>GrPrint</span><span class=cF0>(dc, cx + zeros[i].x - </span><span class=cF3>FONT_WIDTH</span><span class=cF0> / </span><span class=cFE>2</span><span class=cF0>, cy - zeros[i].y - </span><span class=cF3>FONT_HEIGHT</span><span class=cF0> / </span><span class=cFE>2</span><span class=cF0>, </span><span class=cF6>&quot;o&quot;</span><span class=cF0>);
<a name="l103"></a> </span><span class=cF1>for</span><span class=cF0> (i = </span><span class=cFE>0</span><span class=cF0>; i &lt; POLES_NUM; i++)
<a name="l104"></a> </span><span class=cF5>GrPrint</span><span class=cF0>(dc, cx + poles[i].x - </span><span class=cF3>FONT_WIDTH</span><span class=cF0> / </span><span class=cFE>2</span><span class=cF0>, cy - poles[i].y - </span><span class=cF3>FONT_HEIGHT</span><span class=cF0> / </span><span class=cFE>2</span><span class=cF0>, </span><span class=cF6>&quot;x&quot;</span><span class=cF0>);
<a name="l105"></a> </span><span class=cF5>DCDel</span><span class=cF0>(dc);
<a name="l106"></a>}
<a name="l107"></a>
<a name="l108"></a></span><span class=cF1>U0</span><span class=cF0> PoleZeros()
<a name="l109"></a>{
<a name="l110"></a> </span><span class=cF9>I64</span><span class=cF0> message_code, arg1, arg2, p11, p22, cx, cy;
<a name="l111"></a> </span><span class=cF9>Complex</span><span class=cF0> *tmpc = </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l112"></a>
<a name="l113"></a> </span><span class=cF5>PopUpOk</span><span class=cF0>(</span><span class=cF6>&quot;Drag the poles and zeros with left mouse.\n&quot;</span><span class=cF0>
<a name="l114"></a> </span><span class=cF6>&quot;Hold right mouse for phase plot.\n&quot;</span><span class=cF0>);
<a name="l115"></a>
<a name="l116"></a> </span><span class=cF5>SettingsPush</span><span class=cF0>; </span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/System/TaskSettings.CC.html#l3"><span class=cF4>SettingsPush</span></a><span class=cF0>
<a name="l117"></a> </span><span class=cF5>Fs</span><span class=cF0>-&gt;win_inhibit = </span><span class=cF3>WIG_TASK_DEFAULT</span><span class=cF0> - </span><span class=cF3>WIF_SELF_FOCUS</span><span class=cF0> - </span><span class=cF3>WIF_SELF_BORDER</span><span class=cF0>;
<a name="l118"></a> </span><span class=cF5>GrPaletteSet</span><span class=cF0>(</span><span class=cFB>gr_palette_gray</span><span class=cF0>);
<a name="l119"></a> </span><span class=cFB>gr_palette</span><span class=cF0>[</span><span class=cF3>WHITE</span><span class=cF0>] = </span><span class=cFE>0xFF0000</span><span class=cF0>; </span><span class=cF2>//White is red</span><span class=cF0>
<a name="l120"></a>
<a name="l121"></a> </span><span class=cF5>AutoComplete</span><span class=cF0>;
<a name="l122"></a> </span><span class=cF5>WinBorder</span><span class=cF0>;
<a name="l123"></a> </span><span class=cF5>WinMax</span><span class=cF0>;
<a name="l124"></a> </span><span class=cF5>DocClear</span><span class=cF0>;
<a name="l125"></a> </span><span class=cF5>DCFill</span><span class=cF0>;
<a name="l126"></a> scale = </span><span class=cFE>1</span><span class=cF0>.</span><span class=cFE>0</span><span class=cF0>;
<a name="l127"></a>
<a name="l128"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l129"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l130"></a> Draw;
<a name="l131"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF3>TRUE</span><span class=cF0>)
<a name="l132"></a> {
<a name="l133"></a> message_code = </span><span class=cF5>MessageGet</span><span class=cF0>(&amp;arg1, &amp;arg2, </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_KEY_DOWN</span><span class=cF0> +
<a name="l134"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_L_DOWN</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_L_UP</span><span class=cF0> +
<a name="l135"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_R_DOWN</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_R_UP</span><span class=cF0> +
<a name="l136"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_MOVE</span><span class=cF0>);
<a name="l137"></a>pz_message:
<a name="l138"></a> cx = </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_width / </span><span class=cFE>2</span><span class=cF0>;
<a name="l139"></a> cy = </span><span class=cF5>Fs</span><span class=cF0>-&gt;pix_height / </span><span class=cFE>2</span><span class=cF0>;
<a name="l140"></a> </span><span class=cF1>switch</span><span class=cF0> (message_code)
<a name="l141"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l142"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_MS_L_DOWN</span><span class=cF0>:
<a name="l143"></a> tmpc = PoleZeroFind(arg1 - cx, cy - arg2);
<a name="l144"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l145"></a>
<a name="l146"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_MS_MOVE</span><span class=cF0>:
<a name="l147"></a> </span><span class=cF1>if</span><span class=cF0> (tmpc)
<a name="l148"></a> {
<a name="l149"></a> p11 = arg1;
<a name="l150"></a> p22 = arg2;
<a name="l151"></a> </span><span class=cF2>//get to last mouse move</span><span class=cF0>
<a name="l152"></a> </span><span class=cF1>while</span><span class=cF0> (message_code = </span><span class=cF5>MessageScan</span><span class=cF7>(</span><span class=cF0>&amp;arg1, &amp;arg2, </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_KEY_DOWN</span><span class=cF0> +
<a name="l153"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_L_DOWN</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_L_UP</span><span class=cF0> +
<a name="l154"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_R_DOWN</span><span class=cF0> + </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_R_UP</span><span class=cF0> +
<a name="l155"></a> </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_MS_MOVE</span><span class=cF7>)</span><span class=cF0>)
<a name="l156"></a> </span><span class=cF1>if</span><span class=cF0> (message_code == </span><span class=cF3>MESSAGE_MS_MOVE</span><span class=cF0>)
<a name="l157"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l158"></a> p11 = arg1;
<a name="l159"></a> p22 = arg2;
<a name="l160"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l161"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l162"></a> </span><span class=cF1>goto</span><span class=cF0> pz_message;
<a name="l163"></a>
<a name="l164"></a> tmpc-&gt;x = p11 - cx;
<a name="l165"></a> tmpc-&gt;y = cy - p22;
<a name="l166"></a> Draw;
<a name="l167"></a> }
<a name="l168"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l169"></a>
<a name="l170"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_MS_L_UP</span><span class=cF0>:
<a name="l171"></a> </span><span class=cF1>if</span><span class=cF0> (tmpc)
<a name="l172"></a> {
<a name="l173"></a> tmpc-&gt;x = arg1 - cx;
<a name="l174"></a> tmpc-&gt;y = cy - arg2;
<a name="l175"></a> tmpc = </span><span class=cF3>NULL</span><span class=cF0>;
<a name="l176"></a> Draw;
<a name="l177"></a> }
<a name="l178"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l179"></a>
<a name="l180"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_MS_R_DOWN</span><span class=cF0>:
<a name="l181"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_MS_R_UP</span><span class=cF0>:
<a name="l182"></a> Draw;
<a name="l183"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l184"></a>
<a name="l185"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>MESSAGE_KEY_DOWN</span><span class=cF0>:
<a name="l186"></a> </span><span class=cF1>if</span><span class=cF0> (arg1 == </span><span class=cF3>CH_SHIFT_ESC</span><span class=cF0> || arg1 == </span><span class=cF3>CH_ESC</span><span class=cF0>)
<a name="l187"></a> </span><span class=cF1>goto</span><span class=cF0> pz_done;
<a name="l188"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l189"></a> </span><span class=cF5>Refresh</span><span class=cF0>;
<a name="l190"></a> }
<a name="l191"></a>pz_done:
<a name="l192"></a> </span><span class=cF5>MessageGet</span><span class=cF0>(,, </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cF3>MESSAGE_KEY_UP</span><span class=cF0>);
<a name="l193"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l194"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l195"></a> </span><span class=cF5>PutExcept</span><span class=cF0>;
<a name="l196"></a> </span><span class=cF5>SettingsPop</span><span class=cF0>;
<a name="l197"></a> </span><span class=cF5>DCFill</span><span class=cF0>;
<a name="l198"></a>}
<a name="l199"></a>
<a name="l200"></a>PoleZeros;
</span></pre></body>
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