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Outil Noeuds 

L'outil Noeuds  sert a selectionner et manipuler les noeuds afin de pouvoir modifier precisemment la forme des tracés ou des courbes.  En plus de permettre de modifier la position des noeuds, des poignées s'affichent de part et d'autre du noeud quand il est selectionné pour définir la direction des segments qui partent de ce noeud.

Comment l'Utiliser

NodeOptions2_2

NodeOptions2_1

Ajouter un Noeud

Creates a new node between two selected nodes. You can also double-click on the path at the place you want the node to be created.

Supprimer un Noeud

Removes selected nodes and joins adjacent nodes.  It is also possible to press Ctrl+Del or Ctrl+Backspace. 

To preserve the shape of the path better, either select the node and press Del or Bksp, or elseCtrl+Alt+Click on the node.

Joindre les Noeuds

Combines two end nodes into one node on a continuous path, moving both nodes to an average middle point; Shift+J can also be used (hovering the cursor over one node will preserve its position so that only the other node is moved).

Joindre les Noeuds avec un nouveau Segment

Adds a path segment between two open nodes. 

Split Path Between Two non-Endpoint Nodes

Deletes the path segment between two selected nodes, leaving the nodes open (or unconnected).

Break Path at Selected Nodes

Splits a single node into two nodes in the same position. The nodes can then be moved apart.

Make Selected Nodes Corner (Convert to Cusp)

Changes one or more selected nodes into cusp nodes or angled/corner nodes. Paths on cusp nodes have an angle rather than an arch, and node handles can be moved independently of each other.

Make Selected Nodes Smooth

Changes one or more selected nodes into smooth nodes. Also available by Shift+S.  Paths passing through smooth nodes have a continuous arch through the node point, but each handle of the node can have different lengths.

Make Selected Nodes Symmetric

Changes one or more selected nodes into symmetric nodes. Also available by Shift+Y. Paths passing through symmetric nodes have a continuous arc throught the node point, and handles have the same length.

Make Selected Segments Lines

Changes one or more selected segments (two adjacent nodes) into a straight path.

Make Selected Segments Curves

Changes one or more selected segments (two adjacent nodes) into a curved path.  Also available by Shift+U.

Convert Selected Object to Path

Converts an object that is not already a path, like a Live Shape or a text object, to path.  (This command effectively creates "outline" text, removing dependency on installed fonts.)

Convert Selected Object's Stroke to Paths

Creates an outline of a path, creating parallel combined paths separated by the width of the stroke.

Show the Bezier Handles of Selected Nodes

Toggle whether the node's handles are displayed while editing.

Show Next Path Effect Parameter for Editing

 Cycles the display of LPE controls, often indicated by a red or green path or specific handle types.

Invert Node selection

The ! key inverts node selection in the current subpath(s) (i.e. subpaths with at least one selected node); Alt ! inverts in the entire path. (This is similar to how these keys work in Selector, with current subpath(s) instead of the current layer.)

Hotkeys

Multiple select

Shift+Click to select several nodes in succession.

Near selection

Clicking on a selected path selects the two nodes closest to the click point (on either side). Shift+Click adds or removes these two nodes to the node selection (when only one path is selected; otherwise Shift+Click works as in Selector).

Adding nodes

Double-click or Shift+Alt+Click anywhere on the selected path (even if it is under other objects) creates a new node at the click point, without changing the shape of the path.

Tab selects the next node
Shift+Tab selects the previous node

Other

Rotate (direction of handles) by pressing [ or ] keys and scale (length of handles) by < or > keys.  Ctrl+ any of these keys will affect only the left or right node handle (according to whether the left or right Ctrl key is pressed).

Rotating objects or control handles of a node with Ctrl restricts rotation to 15 degree increments. Dragging nodes may be restricted to horizontal/vertical with Ctrl and to the directions of the node's handles (or there perpendiculars) with Ctrl+Alt. Dragging a node's control points with Alt locks the length of the handle, and with Shift, rotates the other handle by the same angle.  When several nodes are selected, pressing < or > scales, [ or ] rotates the selected nodes as if they were an “object”, around the center of that object.  So, for example, in a single-path silhouette portrait, you can select the nodes of the nose and rotate/scale the nose as a whole without breaking the path into pieces. Pressing Alt with these keys gives pixel-sized movement depending on zoom, the same as in Selector. Also, you can press h or v to flip the selected nodes horizontally or vertically.

Ctrl+click toggles cusp/smooth/symmetric, Ctrl+Alt+click deletes a node

Tips

  1. When an object is selected handles appear making it possible to handle the shape of the object in an intuitive and precise way.
  2. You can switch the not-yet-finalized (red) segment of the path being drawn from curve to line (Shift L) or back to curve  (Shift U).
  3. Esc deselects, cancels selection, and cancels drag or transformation of any kind (so far only in selector and node edit). Arrows, Ctrl+a, and Tab / Shift+Tab act on nodes in node editor exactly as they do on objects in Selector.  The first Escape or empty-space click deselects any selected nodes, the second one deselects the selected object removing the node display.
  4. The Node Tool selects objects regardless of grouping. This means you don't need to switch to selector for a Ctrl+click if you want to edit a grouped path.
  5. You can reverse the direction of selected path(s) either via Path > Reverse or by pressing 'r' in node tool (useful for markers and combining paths).
  6. Ctrl+click on a node handle retracts that handle back to its node. 
  7. If a node does not show one or both handles (i.e. they are retracted), you can drag a handle out by dragging away from the node with Shift.
  8. Pressing Ctrl+A with some nodes selected will select not all nodes in the path but all nodes in the subpath(s) containing the selected node(s). To select all nodes in the path unconditionally, either deselect any nodes before pressing Ctrl+A, or use Select all in all subpaths (Ctrl+Alt+A) in Node tool.
  9. Edit the selected path by dragging directly on the path.
  10. if you press Shift before starting to drag, you always get a node selection rubberband rectangle
  11. When you switch the type of the selected node to Smooth or Symmetric by pressing Shift+S / Shift+Y, you can now preserve the position of one of the two handles by hovering your mouse over it, so that only the other handle is rotated/scaled to match. 
  12. You can grow or shrink node selection by hovering the mouse pointer over a node and using mousewheel (up = grow, down = shrink) or the keys PageUp (grow) and PageDown (shrink). Growing adds the closest unselected node to the selection; shrinking deselects the farthest selected node. There are two modes that differ by how the closest/farthest nodes are chosen:
    • Spatial selection (mousewheel, PageUp / PageDown): distances to nodes are measured directly, regardless of which subpath a node belongs to.
    • Linear selection (Ctrl+mousewheel, Ctrl+PageUp/Ctrl+PageDown): node distances are measured along the path, and only the nodes belonging to the same subpath as the hovered node are considered (i.e. other subpaths are never selected).
  13. This technique is convenient for quickly selecting an area in a complex path starting from a center - for example, for node sculpting.
  14. If any of the nodes in the currently selected path is mouseovered, then horizontal/vertical flipping ('H' and 'V' keys), stepwise rotation ('[' and ']' keys) and scaling ('<' and '>' keys) now all use this specific node as center/axis. If there is no mouseovered node, the center of the bounding box is used instead (as is currently the case unconditionally). Nodes that are covered by one of their handles are also detected as mouseovered.
  15. Two entry fields are available on the Tool Controls bar which allow precise editing of the coordinates of selected nodes.
  16. The message, "To join, you must have two endnodes selected" warns that the command only works on endnodes.  To see if a line segment ends in an endnode, drag the middle of the line.  If a closed loop forms, with two paths between two nodes, then the nodes are not endnodes.  To convert a node into an endnode, select the line connected to the node by clicking once on the line, click a second time to select one of the overlapping line segments, and click on the split path tool to remove one of the line segments.

---- Version originale du manuel DocBook, pour compléter ----

2. Sélection de noeud

icône de l'outil Sélection de noeud

Apercu

Comme l'outil Sélection, l'outil Sélection de noeud ou Noeud a un rôle essentiel dans Inkscape et en général dans tout logiciel de dessin vectoriel. Cet outil permet d'activer un noeud ou plusieurs, ainsi que les points de contrôle de manière à pouvoir modifier précisément l'aspect de formes ou de courbes. Les noeuds sont les points le long du chemin qui définissent la forme du chemin. Les poignées de noeud s'étendent du noeud quand celui-ci est sélectionné et définissent la direction des segments de chemin provenant de ce noeud. La fonction primaire de l'outil de noeud est de manipuler la position des noeuds et des poignées de noeud qui composent tous les chemins. Avec l'outil Noeud, un artiste Inkscape peut cliquer et traîner des noeuds dans différentes positions, et manoeuvrer les poignées du noeud afin de changer la forme du chemin.

Utilisation

Cette commande peut être appelée de plusieurs façons comprenant :

  • A l'aide de la Boite Outils :

  • A l'aide du raccourci clavier : F2

Pour utiliser correctement cette fonction, il convient de respecter les étapes suivantes.

Options

Ajout de noeud

Crée un nouveau noeud entre deux noeuds sélectionnés.

Soustraction de noeud

Enlève des noeuds sélectionnés et joint des noeuds adjacents.

Joindre les noeuds

Lorsque deux noeuds sont séparés permet de les relier par un chemin continu.

Ajouter un segment

Ajoute un segment de chemin entre deux noeuds ouverts.

Supprimer le segment

Efface le chemin entre deux noeuds sélectionnés, laissant le chemin ouvert.

Casser le noeud

Scinde un noeud en deux, à la même position. Les deux noeuds peuvent ensuite être manipulés séparément.

Adoucir un noeud

Modifie le noeud ppour qu'il devienne anguleux.

Adoucir le noeud

Modifie le noeud pour qu'il devienne moins anguleux et plus régulier.

 

 

Rend symétrique

Positionne les poignées du noeuds à égale distance du noeud et dans l'alignement de manière à obtenir une courbe parfaitement symétrique.

Transforme en ligne droite

Modifie les points de contrôle adjacents pour que le segment soit droit.

Rend courbe

Modifie les points de contrôle adjacents pour que le segment soit courbe.

Objet en chemin

Convertit n'importe quel objet (forme, texte...) en chemin.

Chemin de contour

Ajoute un chemin autour du chemin sélectionné et à une distance définie de manière à créer un contour.

Modificateurs

Sélection multiple

Maj permet de sélectionner successivement plusieurs Noeuds ou points de contrôle qui vont être cliqués les uns après les autres; recliquer sur un objet désélectionné permet d'annuler sa sélection, sans que celle-ci annule celle des autres objets quelque soit l'ordre de sélection. Cette opération permet d'apporter des modifications simultanément à tous les points sélectionnés.

Sélection rapprochée

Cliquer sur un chemin sélectionne les deux noeuds les plus proches. Shift-clic ajoute ou enlève ces deux noeuds (quand seulement un chemin est choisi ; autrement Shift-clic fonctionne comme dans le sélecteur).

Ajout de noeud

Le double clic ou leShift-Alt-clic n'importe où sur le chemin choisi (même si il est sous d'autres objets) crée un nouveau noeud au point de clic, sans changer la forme du chemin.

Tab

Sélectionne le noeud suivant

Shift Tab

Sélectionne le noeud précédent

Infos additionnelles

Lorsqu'un objet est sélectionnés des poignées de sélections de noeud et de points de contrôle apparaissent permettant de manipuler la forme de l'objet de manière intuitive et précise.