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<a name="mglPoint-class"></a>
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<a name="mglPoint-class-1"></a>
<h2 class="section">9.4 mglPoint class</h2>
<a name="index-mglPoint"></a>

<p>Structure describes point in space. This structure is defined in <code>#include &lt;mgl2/type.h&gt;</code>
</p>
<dl>
<dt><a name="index-x_002c-y_002c-z_002c-c-of-mglPoint"></a><u>Parameter of mglPoint:</u> <code>mreal</code> <b>x, y, z, c</b></dt>
<dd><p>Point coordinates {x,y,z} and one extra value <var>c</var> used for amplitude, transparency and so on. By default all values are zero.
</p></dd></dl>

<dl>
<dt><a name="index-mglPoint-on-mglPoint"></a><u>Method on mglPoint:</u> <code></code> <b>mglPoint</b><i> (<code>mreal</code> X=<code>0</code>, <code>mreal</code> Y=<code>0</code>, <code>mreal</code> Z=<code>0</code>, <code>mreal</code> C=<code>0</code>)</i></dt>
<dd><p>Constructor sets the color by mreal values of Red, Green, Blue and Alpha channels. These values should be in interval [0,1].
</p></dd></dl>

<dl>
<dt><a name="index-IsNAN-on-mglPoint"></a><u>Method on mglPoint:</u> <code>bool</code> <b>IsNAN</b><i> ()</i></dt>
<dd><p>Returns <code>true</code> if point contain NAN values.
</p></dd></dl>
<dl>
<dt><a name="index-norm-on-mglPoint"></a><u>Method on mglPoint:</u> <code>mreal</code> <b>norm</b><i> ()</i></dt>
<dd><p>Returns the norm <em>\sqrtx^2+y^2+z^2</em> of vector.
</p></dd></dl>
<dl>
<dt><a name="index-Normalize-on-mglPoint"></a><u>Method on mglPoint:</u> <code>void</code> <b>Normalize</b><i> ()</i></dt>
<dd><p>Normalizes vector to be unit vector.
</p></dd></dl>
<dl>
<dt><a name="index-val-on-mglPoint"></a><u>Method on mglPoint:</u> <code>mreal</code> <b>val</b><i> (<code>int</code> i)</i></dt>
<dd><p>Returns point component: <var>x</var> for <var>i</var>=0, <var>y</var> for <var>i</var>=1, <var>z</var> for <var>i</var>=2, <var>c</var> for <var>i</var>=3.
</p></dd></dl>


<dl>
<dt><a name="index-operator_002b-4"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator+</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Point of summation (summation of vectors).
</p></dd></dl>
<dl>
<dt><a name="index-operator_002d-4"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator-</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Point of difference (difference of vectors).
</p></dd></dl>
<dl>
<dt><a name="index-operator_002a-5"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator*</b><i> (<code>mreal</code> a, <code>const mglPoint &amp;</code>b)</i></dt>
<dt><a name="index-operator_002a-6"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator*</b><i> (<code>const mglPoint &amp;</code>a, <code>mreal</code> b)</i></dt>
<dd><p>Multiplies (scale) points by number.
</p></dd></dl>
<dl>
<dt><a name="index-operator_002f-3"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator/</b><i> (<code>const mglPoint &amp;</code>a, <code>mreal</code> b)</i></dt>
<dd><p>Multiplies (scale) points by number 1/b.
</p></dd></dl>
<dl>
<dt><a name="index-operator_002a-7"></a><u>Library Function:</u> <code>mreal</code> <b>operator*</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Scalar product of vectors.
</p></dd></dl>

<dl>
<dt><a name="index-operator_002f-4"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator/</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Return vector of element-by-element product.
</p></dd></dl>

<dl>
<dt><a name="index-operator_005e"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator^</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Cross-product of vectors.
</p></dd></dl>
<dl>
<dt><a name="index-operator_0026"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator&amp;</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>The part of <var>a</var> which is perpendicular to vector <var>b</var>.
</p></dd></dl>
<dl>
<dt><a name="index-operator_007c"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator|</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>The part of <var>a</var> which is parallel to vector <var>b</var>.
</p></dd></dl>

<dl>
<dt><a name="index-operator_0021-1"></a><u>Library Function:</u> <code>mglPoint</code> <b>operator!</b><i> (<code>const mglPoint &amp;</code>a)</i></dt>
<dd><p>Return vector perpendicular to vector <var>a</var>.
</p></dd></dl>
<dl>
<dt><a name="index-mgl_005fnorm"></a><u>Library Function:</u> <code>mreal</code> <b>mgl_norm</b><i> (<code>const mglPoint &amp;</code>a)</i></dt>
<dd><p>Return the norm sqrt(|<var>a</var>|^2) of vector <var>a</var>.
</p></dd></dl>

<dl>
<dt><a name="index-operator_003d_003d"></a><u>Library Function:</u> <code>bool</code> <b>operator==</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Return true if points are the same.
</p></dd></dl>
<dl>
<dt><a name="index-operator_0021_003d"></a><u>Library Function:</u> <code>bool</code> <b>operator!=</b><i> (<code>const mglPoint &amp;</code>a, <code>const mglPoint &amp;</code>b)</i></dt>
<dd><p>Return true if points are different.
</p></dd></dl>




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