Context Navigation

Editing Help/Action/FastDrawingMode

Adjust edit area height: Edit side-by-side

[[TranslatedPages(outdated=This page needs some rework. The OSM-wiki page is better structured and better readable.)]]

= Creating lines with mouse or pen using Fast Draw =
[[Image(/pluginicon/FastDraw.jar/images/favicon.png,link=,48,middle,margin.right=20)]] ''keyboard shortcut:'' **`Shift+F`** — is one of the [wikitr:/Help/Menu/Mode#Workingmode working modes], provided by the [osmwiki:JOSM/Plugins/FastDraw FastDraw] [wikitr:/Plugins plugin]

Suggested usage - tracing forests, rivers, lakes, twisted roads etc. Without clicking `A` button or left mouse click too much.

Please use simplification and validator! Do not upload huge and self-intersecting lines.

=== Usage with streams ===#Usagewithstreams
[[Image(fastdraw-stream.gif,nolink)]]

[#Shortcutsanddrawingmode Drawing mode], in simple words:
1. ''Enter the drawing mode, click pen toolbar icon (or `Shift+F`)''. Icon will be set to cross.
1. ''(optionally) press `Q` to open [#ConfigurationmenuQ configuration menu]
1. ''Point cursor at starting position. Move mouse. Press or hold: `Spacebar`'' or ''left mouse button'' - when you want to add more nodes. Icon will we switched to (icon: cross with 3 nodes), it means that nodes will be added.
[#Automaticsimplification Automatic simplification], in simple words: \\
4. ''`Enter`. shape will be automatically simplified with respect to ''fixed nodes'' (to reduce number of nodes).
5. ''(optionally) fine tune simplification using `Up` or `Down` buttons.''
6. ''`Enter` again. Regular OSM way is created and selected.''
After step 6, Drawing mode will be disabled and all respective shortcuts will be inaccessible (including `Q`)

=== Shortcuts and drawing mode ===#Shortcutsanddrawingmode
This sections covers steps 1,3 in detail:
* You can ''move nodes'' simply by dragging them
* `Backspace` - to delete one of previous nodes sequentially
* `Ctrl+Click` on free node makes it **fixed** (icon: a green dot) - that will not be affected by simplification; you may use it for corners or other significant parts of shape but this is not required
* If you point cross cursor over node that was entered by other JOSM tools, it will be added as ''fixed node''
* `Ctrl+Click` on ''fixed node'' (icon: a green dot inside red dot) -  makes it normal node
* `Shift+Click` (icon: red cross) - to delete selected node 
* `Shift+Click` (icon: red cross) - can also used to delete sequence of ''insignificant nodes'' between two ''fixed nodes''; it will be highlighted in blue. After you removed a segment, you will enter **redrawing mode**, a segment that is currently redrawn will be displayed in yellow:
 * You can use other shortcuts as usual;
 * To finish ''redrawing'' and save ''new nodes of a segment'' press `Shift+Click` or `Escape`
* `Ctrl+Shift+Click` (icon: red cross) - will remove all nodes, tool will be ready to use again
* `Escape`- to stop editing (you will be prompted to save your edits)
* Click on the first node (icon: rectangle with red corners) - will create continuous contour

If only one way is selected (not downloaded from server, to reduce possible problems), you can redraw or re-simplify it by pressing `Shift+F` twice. Unused points will be deleted when saving line `Enter` - `Enter`. Beware - tags are deleted. Undo `Ctrl+Z` works. This feature can be used to simplify alternatively created ways (tracks etc.) or for resimplifying with different parameters.

=== Automatic simplification ===#Automaticsimplification
This sections covers step 4-5 in detail:
* `Up`/`Down` - will multiply current value by epsilon multiplier (`fastdraw.epsilonmult`)
* ''Starting value of epsilon'' (`fastdraw.startingEps`) set in Configuration menu 
* ''Current value of epsilon'' displayed in the status bar
* Algorithm will repeat until there `fastdraw.pkmblocksize` nodes in a way and while (number of nodes)/(length of a way) is above "''Max points count per 1 km''" (`fastdraw.maxpkm`)
* epsilon value and starting epsilon value depends on current pixel sizes (zoom level of the map view matters)

=== Snapping to existing nodes, point fixation ===
* When dragging and clicking near existing nodes, these can be automatically included in drawn line (they become fixed and are not changed by simplification). You can turn off this behavior in settings `Q`.
* After clicking on starting line point you close the line, it can not be continued by mouse.
* `Ctrl+Click` on existing line point - fix or release this point.
* By using checkboxes in settings, you can force all nodes added by mouse clicks or Space bar to be fixed.

=== Advanced Preferences ===
* `fastdraw.pkmblocksize` - not shown in menu to end user (read above)

== See also ==
* [osmwiki:JOSM/Plugins/FastDraw FastDraw] OSM-wiki page
----
Back to [wikitr:/Help/Menu/Mode Mode Menu] \\
Back to [wikitr:/Help Main Help]

Note: See WikiFormatting and TracWiki for help on editing wiki content.

Change information

Your email or username:

E-mail address and name can be saved in the Preferences

Comment about this change (optional):

Attachments (2)

fastdraw-stream.gif (240.9 KB ) - added by openstreetmap.org-user-d1g 9 years ago. https://github.com/mapbox/mapping/wiki/Mapping%20with%20JOSM#plugins https://github.com/mapbox/mapping/issues/162
fastdraw-q-settings.png (12.9 KB ) - added by openstreetmap.org-user-d1g 9 years ago. https://github.com/mapbox/mapping/wiki/Mapping%20with%20JOSM#plugins https://github.com/mapbox/mapping/issues/162

Download all attachments as: .zip

Note: See TracWiki for help on using the wiki.