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<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Intersection (of non-intersecting linesegments)</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/select2lines.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">You first
have to select two line segments. The tool will always lets
you select two segments. If you select a third one, it
deletes the first segment selection. Please bear in mind that
you have appropriate snapping settings values. You can select
segments either from lines or polygons.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/pointandline.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">You can
now create an intersection point that will be drawn in
a memory layer. It will create also a line that joins the two
points furthest away with the intersection point.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">Arc
Intersection</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/select2points.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This tool
lets you calculate an arc intersection from two distances to
two points. You have to select two points. If you select a
third one, the first selection will be canceled. Please bear
in mind that you have appropriate snapping settings values
and the "on the fly" crs transformation should not be
enabled.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/arcintersection.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">When you
have selected two points you can calculate the arc
intersection by entering the distance (in meters) to the two
selected points. The intersection point(s) will be drawn in a
memory layer.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Orthogonal Line</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/selectpointandline.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This one
is for creating a orthogonal line (and the intersection
point) from a point to a linesegment. You first have to
select a vertex (which has to be in the current layer) and
then the segment from a background layer. The selector will
toggle between vertex and segment selections. Please bear in
mind that you have appropriate snapping settings</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/ortholine.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">When you
have selected a vertex and a segment you can create the
orthogonal line and the intersection point. These two objects
will be drawn in a memory layer.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Rectangular Points</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/selectsinglesegment.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This
function lets draw points from orthogonal measurements to a
base line. You first have to select the line segment.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/rectangularpoints.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">If you
selected the base line you can simply enter the abscissa (x)
and the ordinate (y). The origin is always the left point of
base line. But you can invert the origin by checking the
checkbox.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Orthogonal Traverse</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/select2points.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">With this
function you can draw/calculate an orthogonal traverse
between two points which you have to select first.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/orthogonaltraverse.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">After
selecting the two points you can calculate the orthogonal
traverse by entering the distances you measured in one line,
e.g. "3.5 -2.46 -12.33 4.5". This describes an orthogonal
traverse with four distances. If you want to turn left you
have to use negative values.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Show Azimuth</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/select2points.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">With this
function you can calculate the azimuth
between two points which you have to select first.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/showazimuth.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">After
selecting the two points you can calculate the azimuth just by
pushing the button.</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Rotate Feature</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/selectvertexandfeature.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This function is
for rotating features. You first have to select the feature you want to rotate
and a vertex which will be the centre of rotation. The vertex does not have
to be on the current layer.</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/rotatefeature.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">After
selecting the feature and the vertex you can enter the angle of
rotation (in degrees).</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Parallel Line</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/selectsinglesegment.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">With this function you can create parallel lines. First
you have to select a single line segment.
</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/parallelline.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">After
selecting the line segment you can either create a parallel line by entering a fixed length or selecting a vertex point.</i></div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Circular Arc</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/select3points.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This function creates a
segmentized circular arc. You first have to select three points which will define the circular arc;
the starting point, one point on the circular arc and the end point.
</div>
</div>
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/circulararc.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">After
selecting the three points you can create the segmentized circular arc. You can choose the
method of the segmentation (pitch or angle) and the tolerance in <i>CadTool - Settings.</i></div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Modify Circular Arc</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/modifycirculararc.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">You can modify the circular arc you created with the
function above. This tool is only available if there is a linestring layer in editing mode. You can either move one of the arc points - which will change the diameter of the circular arc - or
move the starting/end point. The latter method will define the circular arc with the moving point, the mean arc point and the
other starting/end point.
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Circular Arc Digitizing</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/capturecirculararc.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This function is only available if there is a polygon or a linestring layer in editing mode otherwise
the button is greyed out. You have to hold the ctrl key pressed when adding the three arc points (starting point, arc points, end point).
After adding the third one it will draw the circular arc.
There will no attribute window pop up.
</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Spline Digitizing</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/spline.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This function is only available if there is a polygon or a linestring layer in editing mode. Digitized points are interpolated using Hermite spline with optional <i>tightness</i>. The spline is converted to linestring using <i>tolerance</i>. Both <i>tightness</i> and tolerance may be changed in settings.
</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">
Orthogonal Digitizing</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/ortho.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">This function is only available if there is a polygon or a linestring layer in editing mode otherwise
the button is greyed out. You have to press the ctrl key to draw lines or polygons with square angles.
To close a polygon you have 2 alternatives:
<ol>
<li>You can release the ctrl key before closing the polygon with a right mouse click. You have
to draw by eye when you want a square angle.</li>
<li>When you have the ctrl key pressed when closing the polygon, the first point of the polygon
will be moved till the last angle is square.</li>
</ol>
There will no attribute window pop up.
</div>
</div>
</div>
</div>
<div style="background-color:white; color:#422808; padding:0px; margin:0px 0px 20px 0px;">
<div style="font-weight:bold; margin:0px 0px 5px 0px;">Cad
Console</div>
<div style="margin-left:0px; margin-bottom:1em; font-size:10pt">
<div id="function">
<div id="head">
<img style="border: 1px solid black;"
src="images/cadconsole.png" />
</div>
<div style="margin:0px 0px 5px 0px; color:#000000;">The cad
console supports some commands:
<ol>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">ortho <i>on/off</i></span>: Toggles ortho mode on and off so
you don't need to push the ctrl-button all the time.
</li>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">ortho <i>abscissa ordinate</i></span>: Adds an orthogonal vertex
point with <span style="font-family: 'Droid Sans Mono', arial, monospace;">abscissa</span> = abscissa and <span style="font-family: 'Droid Sans Mono', arial, monospace;">ordinate</span> = ordinate.
</li>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">polar <i>angle distance</i></span>: Adds a polar vertex point with <span style="font-family: 'Droid Sans Mono', arial, monospace;">angle</span>
= angle and <span style="font-family: 'Droid Sans Mono', arial, monospace;">distance</span> = distance.
The angle is always relative to the last segment.
</li>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">length <i>length/off</i></span>: Sets the digitizer to a restricted digitizing length for the following segments.
</li>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">close line</span>: Close the digitized line.
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">close poly</span>: Close the digitized polygon.
</li>
<li> <span style="font-family: 'Droid Sans Mono', arial, monospace;">exit</span>: Exits the cad console.
</li>
</ol>
These commands only work if you use the orthogonal digitizer tool. For adding vertex points (No. 2, 3, 5 and 6) you need at least one digitized segment.
</div>
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