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<a name="Line"></a>
<a name="14_2"></a><h2>Lines</h2>
<p>
Click the line button in the CAD toolbar to show the line toolbar
(Figure 29).</p>
<p class="figure">
<a href="img/toolbar_line.png"><img border="0" src="img/toolbar_line_t.png"></a></p><p class="figure_label">
<b>Figure 29: </b>The line
toolbar.</p>
<a name="Sequence of Lines"></a>
<a name="Line"></a>
<a name="Line - Sequence"></a>
<a name="14_2_1"></a><h3>Sequence Of Lines</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_2p.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - 2 Points</p>
<p>
<b>Command:</b>
</p>
<p class="code">
line</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
This tool lets you draw a sequence of one or more straight
lines.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Specify the startpoint of the first line segment. You can use the
mouse or enter a co-ordinate in the console.</li>
<li>Specify the endpoint of the first line segment.</li>
<li>Specify the endpoints of additional line segments. Type
<code>c</code>
or
<code>close</code>
or click the 'Close' button in the Options Toolbar to close the sequence.
If you need to undo a single line segment, you can do so by entering
<code>u</code>
or
<code>undo</code>
or clicking the 'Undo' button.</li>
</ol>
</p>
<a name="Line"></a>
<a name="Angle"></a>
<a name="Line - Angle"></a>
<a name="14_2_2"></a><h3>Line With Given Angle</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_angle.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Angle</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_angle.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
Use this tool to create lines with a given angle. The line will have to
be trimmed to the desired length after creating it.</p>
<p>
<ol>
<li>Enter the angle and length of the line in the options toolbar. You
can also use the command line:
<code>angle</code>
,
<code>ang</code>
or
<code>a</code>
to change the angle.
<code>length</code>
,
<code>len</code>
or
<code>l</code>
to change the length.</li>
<li>Place the line with the mouse or by entering a co-ordinate in the
command line.</li>
</ol>
</p>
<a name="Line"></a>
<a name="Horizontal"></a>
<a name="Vertical"></a>
<a name="Line - Horizontal"></a>
<a name="Line - Vertical"></a>
<a name="14_2_3"></a><h3>Horizontal / Vertical Line</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_hv.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Horizontal / Vertical</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_hv.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
Use this tool to create horizontal (vertical) lines. This tool
essentially behaves like the one described above, except that you cannot
input an angle.</p>
<a name="Rectangle"></a>
<a name="Line - Rectangle"></a>
<a name="14_2_4"></a><h3>Rectangle</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_rectangle.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Rectangle</p>
<p>
<b>Command:</b>
</p>
<p class="code">
rec, rectang, rectangle</p>
<p>
<b>Description:</b>
</p>
<p>
Use this tool to create rectangular shapes more quickly than with the
line tool. A rectangle consists of four separate lines.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Specify the first corner of the rectangle.</li>
<li>Drag the mouse to the second corner and click to specify the second
corner of the rectangle. Alternatively you can enter the co-ordinate of
the second corner in the command prompt. E.g. to create a rectangle with
width 50 and height 25, enter
<code>@50,25</code>
.</li>
</ol>
</p>
<a name="Parallel"></a>
<a name="Parallel Line"></a>
<a name="Line - Parallel"></a>
<a name="14_2_5"></a><h3>Parallel</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_parallel.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Parallel</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_parallel.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
With this tool you can create parallels to existing line, arc and
circle entities.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Enter the distance of the parallel from the original entity into the
options toolbar shown at the top or enter
<code>distance</code>
,
<code>dist</code>
or
<code>d</code>
in the command line, followed by the distance.</li>
<li>Click the entity to which you want to create a parallel. The parallel
is created on the side on which the mouse cursor is located while
selecting the entity.</li>
</ol>
</p>
<a name="Bisector"></a>
<a name="Angle Bisector"></a>
<a name="Line - Bisector"></a>
<a name="14_2_6"></a><h3>Bisector</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_bisector.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Bisector</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_bisector.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
Use this tool for creating angle bisectors between two line
entities.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>In the options toolbar enter the length of the bisector(s), starting
from the intersection point of the two lines. In the second text box,
type the number of angle bisectors you want to create. The default is '1'
but you can also create multiple bisectors as shown in Figure
30. To specify the length in the command line, enter
<code>length</code>
,
<code>len</code>
or
<code>l</code>
, followed by the length. To specify the number of bisectors in the
command line, enter
<code>number</code>
,
<code>num</code>
or
<code>n</code>
, followed by the number.</li>
<li>Click the first line entity which defines the angle.</li>
<li>Click the second line entity so that the preview shows the angle
bisector(s) you want to create.</li>
</ol>
</p>
<p class="figure">
<img border="0" src="img/bisector01.png"></p><p class="figure_label">
<b>Figure 30: </b>Construction of
Bisectors.</p>
<a name="Tangent"></a>
<a name="Line - Tangent"></a>
<a name="14_2_7"></a><h3>Tangent From Point to Arc / Circle</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_tangent1.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Tangent (P,C)</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Description:</b>
</p>
<p>
Create tangents from a co-ordinate to an existing arc or circle entity
with this tool.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Use the mouse to specify the location of the startpoint of the line
or enter a co-ordinate in the command line.</li>
<li>Click the arc or circle entity to which you want to create the
tangent. Usually, two tangents are possible. When moving the mouse
around, you can see a preview of the tangent that will be created.</li>
</ol>
</p>
<a name="Tangent"></a>
<a name="Line - Tangent"></a>
<a name="14_2_8"></a><h3>Tangent From Arc to Arc / Circle to Circle</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_tangent2.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Tangent (C,C)</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Description:</b>
</p>
<p>
Create tangents from one existing arc or circle entity to another one
with this tool.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Click the first arc or circle entity to which you want to create the
tangent.</li>
<li>Click the second arc or circle entity to which you want to create the
tangent. Usually, four tangents are possible. When moving the mouse
around, you can see a preview of the tangent that will be created.</li>
</ol>
</p>
<a name="Orthogonal"></a>
<a name="Line - Orthogonal"></a>
<a name="14_2_9"></a><h3>Line Orthogonal to Another Entity</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_orthogonal.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Orthogonal</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Description:</b>
</p>
<p>
This tool lets you create lines orthogonal to existing entities. The
existing entity can be a line or an arc / circle.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Click the existing entity.</li>
<li>Place the line with the mouse or enter a co-ordinate in the command
line.</li>
</ol>
</p>
<a name="Relative Angle"></a>
<a name="Line - Relative Angle"></a>
<a name="14_2_10"></a><h3>Line with Relative Angle to Another Entity</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_relangle.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Relative Angle</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Description:</b>
</p>
<p>
Create lines with a relative angle to existing entities with this tool.
The existing entity can be a line or an arc / circle. Lines with a relative
angle of 0 degrees to an arc are tangents.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Enter the angle in the options toolbar.</li>
<li>Click the existing entity.</li>
<li>Place the line with the mouse or enter a co-ordinate in the command
line.</li>
</ol>
</p>
<a name="Freehand Line"></a>
<a name="Line - Freehand"></a>
<a name="14_2_11"></a><h3>Freehand Line</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_freehand.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Freehand</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Description:</b>
</p>
<p>
With this tool you can draw freehand lines. Please use this tool
sparingly since technical drawings usually require absolute accuracy.
However, on some occasions this tool might come in handy (e.g. for broken
edges like shown in Figure 31).</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Place the mouse at the startpoint of the freehand line, press the
left mouse button and keep it down.</li>
<li>Now move the mouse around to draw the line. At the endpoint of the
freehand line, let go of the mouse button.</li>
</ol>
</p>
<p class="figure">
<img border="0" src="imgs/linefreehand01.png"></p><p class="figure_label">
<b>Figure 31: </b>Example
use for the freehand line tool.</p>
<a name="Polygon"></a>
<a name="Line - Polygon"></a>
<a name="14_2_12"></a><h3>Polygon with Center and Corner</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_polygon.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Polygon (Cen,Cor)</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_polygon.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
Creates polygons with the center and one corner given.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Enter the degree of the polygon (number of edges / corners) in the
options toolbar. Valid numbers range from 3 to 9999.</li>
<li>Set the center of the polygon using the mouse or enter a co-ordinate
in the command line.</li>
<li>Set the first corner of the polygon.</li>
</ol>
</p>
<a name="Polygon"></a>
<a name="Line - Polygon"></a>
<a name="14_2_13"></a><h3>Polygon with Two Corners</h3>
<p>
<b>CAD Toolbar:</b>
</p>
<p>
<img border="0" src="imgs/toolbar_line_polygon2.png"><br>
</p>
<p>
<b>Menu:</b>
</p>
<p class="code">
Draw - Line - Polygon (Cor,Cor)</p>
<p>
<b>Command:</b>
</p>
<p class="code">
?</p>
<p>
<b>Options Toolbar:</b>
</p>
<p>
<img border="0" src="img/options_line_polygon.png"><br>
</p>
<p>
<b>Description:</b>
</p>
<p>
Creates polygons with two corners given.</p>
<p>
<b>Procedure:</b>
</p>
<p>
<ol>
<li>Enter the degree of the polygon (number of edges / corners) in the
options toolbar. Valid numbers range from 3 to 9999.</li>
<li>Set the first corner of the polygon using the mouse or enter a
co-ordinate in the command line.</li>
<li>Set the second corner of the polygon.</li>
</ol>
</p>
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