[[TranslatedPages]] = Draw Nodes = [[Image(source:/trunk/images/mapmode/node/autonode.png)]] ''Keyboard shortcut:'' '''{{{A}}}''' [[TOC(inline)]] This mode behaves differently depending on how you use it. == Try it yourself == Open [https://josm.openstreetmap.de/attachment/wiki/Help/Action/Draw/josmwiki-actiondraw.osm josmwiki-actiondraw.osm] using menu item [/Help/Menu/File "File > Open"]. == Standard Mode == === Create a node === When selection is empty, If you click on a blank area of the screen you add a new node independent of any existing way: [[Image(ex1-empty-selection-click-on-blank.gif,nolink)]] === Click on node will stop mode === To stop drawing mode, click on selected object (a node) again. This can be done so quickly and some users confuse it with double click. No, you don't need double click: [[Image(ex1-select-deselect-without-double-click.gif,nolink)]] === Draw a segment === With empty selection, if you select one node and then click on a blank area of the screen you add a new node and create a new way (with one segment): ''Note: click on second node in segment used to stop drawing mode'' [[Image(ex1-selected-node-draw-a-segment.gif​,nolink)]] === Click on node will start new segment similar to empty === * If you are currently not drawing, then you can select node with a left mouse click * If the node is an end node of a line then also the line gets selected (leaf node + way in selection); this will be explained in [#Continuousdrawing] In demo below, left mouse click was used to select first drawing mode, then clicked 6 times at nodes: [[Image(ex1-click-to-select-a-node-or-exit-drawing-on-leaf-node.gif​,nolink)]] === Common nodes with another way === This is often necessary when you edit highways. If a node is previously selected and you click between two nodes in an existing way the new node is added on the existing way, between two existing nodes, and a way is drawn between the previously selected node and the ''new node''. The ''new node'' will belong to both ways. It's often refereed as "common node". Simplest scenario: [[Image(ex1-common-nodes-with-another-way.gif,nolink)]] === Click on overlapping segments will create common node === (stub, possibly imprecise text) If two ways cross, and there currently is no node in common at the junction, and you click near the intersection of the two ways, then the node will be inserted into both ways, which will then share a common point. === Common nodes are bigger === It help you distinguish them from other nodes. First drawn way have a common nodes with old way and second drawn way has no common nodes (details [#Ctrlmodifier how second way was drawn will be explained below]): [[Image(ex2-common-nodes-wtih-other-way-and-without-common-nodes.gif​,nolink)]] === Double click stops drawing on leaf node === Drawing stops, if you make a double click when creating the last node. This way you don't have to click on last node, but you have to know about this special case: [[Image(ex1-double-click.gif,nolink)]] === Continuous drawing === Previous way will be continued if both are true: 1. nothing was selected OR way in question was selected 2. draw mode applied to leaf nodes If draw mode applied to non-leaf nodes, it will create a new way instead of continuing old one: [[Image(ex1-will-continue-way-on-leaf-nodes-and-wont-at-middle.gif​,nolink)]] ==== Left click on drawn way will stop continuous drawing ==== It doesn't matter if you click on nodes or create a new node in a way: [[Image(ex1-click-on-self-when-drawing-will-deselect.gif,nolink)]] === Snaps to existing nodes or ways === Note how nodes and way change colour to yellow when hovering over them: [[Image(ex1-snapping.gif,nolink)]] If you click near an '''existing node''' it draws a "segment" between what was previously selected and the existing node, and this allows you to re-use existing nodes to make a new way / area (so that certain nodes and "segments" can be reused in more than one way/ area): [[Image(ex2-snapping.gif,nolink)]] == Angle snapping == You can choose the direction of next segment to make specific angle between segments (0,30,45,90, degrees etc.). To enable this mode press '''{{{A}}}''' again and see helper lines while moving mouse. To fix the direction and move mouse far from snapping line, please hold '''{{{A}}}''' key. Right click on any way segment when snapping allows to use that segment as reference (for example, to draw segment that is parallel, perpendicular or 45 degrees-aligned to the reference segment). Instead of the right click you can also hold {{{Ctrl}}} while moving mouse over desired reference segment. To choose angles, disable showing helper geometry, or disable snapping, use right-click on Angle symbol in statusbar and select corresponding item in [Help/StatusBar#anglemenu popup menu]. == Modifiers == === Alt modifier === [[Image(ex1-alt.gif,nolink)]] If you hold down the {{{Alt}}} key when using this mode it starts a new way, rather than continuing an existing way. === Shift modifier === [[Image(ex1-shift.gif,nolink)]] If you hold down the {{{Shift}}} key while using this mode, it disables the "auto-connect" feature. So segments will not be drawn between new nodes. === Ctrl modifier === [[Image(ex1-ctrl.gif,nolink)]] If you hold down the {{{Ctrl}}} key whilst using this mode, it disables the snapping to an existing way, allowing you to draw nodes close to, but not part of an existing way. === Combination of modifiers === You may optionally use one or many modifiers at once to get desired result. Here is Ctrl modifier used with Shift at once: [[Image(ex1-ctrl+shift.gif,nolink)]] == See also == * [[Image(source:/trunk/images/addnode.png)]][wiki:/Help/Action/AddNode Add node ...] * [[Image(source:trunk/images/mapmode/improvewayaccuracy.png,nolink)]] [Action/ImproveWayAccuracy Improve Way Accuracy mode] (W) ---- Back to [wiki:/Help/EditToolbar Edit Toolbar][[BR]] Back to [wiki:/Help Main Help]