How to make a "Line Jump" effect for polyline geometry

JasonHrubizna

I would like to be able to render polylines using  what I believe is called "Line Jump" effect.  I have explored the representation tools and not found a solution there (apart from manually drawing in the line jump effect everywhere it is needed, which is not an acceptable method!).

Here is an image showing the effect I am after:

It does not matter to me which of the intersecting lines ends up having the jump applied to it.

Does anyone have a solution suggestion?

thanks,

Jason

XanderBakker

Just to reflect a little over the complexity this may generate, see below a python snippet below:

<SPAN class="keyword token">def</SPAN> <SPAN class="token function">main</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">import</SPAN> arcpy

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># output fcs for validation</SPAN>
&nbsp;&nbsp;&nbsp; fc_in <SPAN class="operator token">=</SPAN> r<SPAN class="string token">'C:\GeoNet\JumpLines\data.gdb\test_in_v04'</SPAN>
&nbsp;&nbsp;&nbsp; fc_out <SPAN class="operator token">=</SPAN> r<SPAN class="string token">'C:\GeoNet\JumpLines\data.gdb\test_out_v04'</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_in <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_out <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">]</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># some settings</SPAN>
&nbsp;&nbsp;&nbsp; jump_size <SPAN class="operator token">=</SPAN> <SPAN class="number token">0.25</SPAN>
&nbsp;&nbsp;&nbsp; clearence <SPAN class="operator token">=</SPAN> <SPAN class="number token">0.05</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># define some coordinates and sr for the 2 lines</SPAN>
&nbsp;&nbsp;&nbsp; pnts1 <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="number token">10</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">10</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp; pnts2 <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="punctuation token">[</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">10</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">[</SPAN><SPAN class="number token">6</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">]</SPAN>
<SPAN class="comment token">##&nbsp;&nbsp;&nbsp; pnts1 = [[-1,0], [10, 10]]</SPAN>
<SPAN class="comment token">##&nbsp;&nbsp;&nbsp; pnts2 = [[8, 10], [1, 0]]</SPAN>
&nbsp;&nbsp;&nbsp; sr <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>SpatialReference<SPAN class="punctuation token">(</SPAN><SPAN class="number token">3857</SPAN><SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># create the 2 polylines and store the result</SPAN>
&nbsp;&nbsp;&nbsp; line1 <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>Polyline<SPAN class="punctuation token">(</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>Array<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">[</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>Point<SPAN class="punctuation token">(</SPAN><SPAN class="operator token">*</SPAN>pnt<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> pnt <SPAN class="keyword token">in</SPAN> pnts1<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> sr<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; line2 <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>Polyline<SPAN class="punctuation token">(</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>Array<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">[</SPAN>arcpy<SPAN class="punctuation token">.</SPAN>Point<SPAN class="punctuation token">(</SPAN><SPAN class="operator token">*</SPAN>pnt<SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">for</SPAN> pnt <SPAN class="keyword token">in</SPAN> pnts2<SPAN class="punctuation token">]</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> sr<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_in<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>line1<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_in<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>line2<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; arcpy<SPAN class="punctuation token">.</SPAN>CopyFeatures_management<SPAN class="punctuation token">(</SPAN>test_lines_in<SPAN class="punctuation token">,</SPAN> fc_in<SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># intersect lines and get first (only) intersecting point</SPAN>
&nbsp;&nbsp;&nbsp; mp <SPAN class="operator token">=</SPAN> line1<SPAN class="punctuation token">.</SPAN>intersect<SPAN class="punctuation token">(</SPAN>line2<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; pnt <SPAN class="operator token">=</SPAN> mp<SPAN class="punctuation token">.</SPAN>getPart<SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># create a buffer (circle) around intersecting point</SPAN>
&nbsp;&nbsp;&nbsp; pntg <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>PointGeometry<SPAN class="punctuation token">(</SPAN>pnt<SPAN class="punctuation token">,</SPAN> sr<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; jump_buf <SPAN class="operator token">=</SPAN> pntg<SPAN class="punctuation token">.</SPAN>buffer<SPAN class="punctuation token">(</SPAN>jump_size<SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># get the outline</SPAN>
&nbsp;&nbsp;&nbsp; jump_buf_line <SPAN class="operator token">=</SPAN> jump_buf<SPAN class="punctuation token">.</SPAN>boundary<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># split the outline with the (say) 1ste line and take the 1st part</SPAN>
&nbsp;&nbsp;&nbsp; cut_lst <SPAN class="operator token">=</SPAN> jump_buf_line<SPAN class="punctuation token">.</SPAN>cut<SPAN class="punctuation token">(</SPAN>line1<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; jump_line <SPAN class="operator token">=</SPAN> cut_lst<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_out<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>jump_line<SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># now cut the 1ste line with the outline</SPAN>
&nbsp;&nbsp;&nbsp; cut_lst <SPAN class="operator token">=</SPAN> line1<SPAN class="punctuation token">.</SPAN>cut<SPAN class="punctuation token">(</SPAN>jump_buf_line<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; keep_lines <SPAN class="operator token">=</SPAN> cut_lst<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_out<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>keep_lines<SPAN class="punctuation token">)</SPAN>


&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># determine where jump line crosses second line</SPAN>
&nbsp;&nbsp;&nbsp; mp <SPAN class="operator token">=</SPAN> line2<SPAN class="punctuation token">.</SPAN>intersect<SPAN class="punctuation token">(</SPAN>jump_line<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; pnt <SPAN class="operator token">=</SPAN> mp<SPAN class="punctuation token">.</SPAN>getPart<SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># create a buffer (circle) around intersecting point for clearence</SPAN>
&nbsp;&nbsp;&nbsp; pntg <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>PointGeometry<SPAN class="punctuation token">(</SPAN>pnt<SPAN class="punctuation token">,</SPAN> sr<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; clear_buf <SPAN class="operator token">=</SPAN> pntg<SPAN class="punctuation token">.</SPAN>buffer<SPAN class="punctuation token">(</SPAN>clearence<SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># get the outline clearence</SPAN>
&nbsp;&nbsp;&nbsp; clear_buf_line <SPAN class="operator token">=</SPAN> clear_buf<SPAN class="punctuation token">.</SPAN>boundary<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># now cut the 2nd line with the outline of clearence</SPAN>
&nbsp;&nbsp;&nbsp; cut_lst <SPAN class="operator token">=</SPAN> line2<SPAN class="punctuation token">.</SPAN>cut<SPAN class="punctuation token">(</SPAN>clear_buf_line<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; keep_lines <SPAN class="operator token">=</SPAN> cut_lst<SPAN class="punctuation token">[</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">]</SPAN>
&nbsp;&nbsp;&nbsp; test_lines_out<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN>keep_lines<SPAN class="punctuation token">)</SPAN>

&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># store resulting lines</SPAN>
&nbsp;&nbsp;&nbsp; arcpy<SPAN class="punctuation token">.</SPAN>CopyFeatures_management<SPAN class="punctuation token">(</SPAN>test_lines_out<SPAN class="punctuation token">,</SPAN> fc_out<SPAN class="punctuation token">)</SPAN>


<SPAN class="keyword token">if</SPAN> __name__ <SPAN class="operator token">==</SPAN> <SPAN class="string token">'__main__'</SPAN><SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; main<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

This code hardly contains any intelligence and will only work in very specific situation. When you run the code and look at the result you will see this:

Input lines:

Resulting lines after process:

Looks almost acceptable, right? However, when crossing lines have more similar angles like this:

The result will have flaws:

 

Maybe it is better to use color to distinguish the lines:

Or use schematics or the new ArcGIS Utility Network Management extension diagrams to visualize the lines in a more understandable way.