Smoothing is how much path simplifying nodes are applied to the spiro being created. Note - The pencil tool's spiro rendering is based on the Smooth setting of the Tool Controls bar. The thin red line segment editor can be used to set a straight or curved segment within a spiro. The positioning (vector) of smooth nodes in relation to adjacent cusp/smooth nodes is how a spiro's rendering is calculated. Even though smooth node handles are displayed on Spiro paths they do not impact editing of the Spiro. Once the spiro path is created, the Node Tool must be used to edit the positioning of the spiro's smooth and cusp nodes. Smooth nodes apply spiro based interconnection to adjacent nodes within the path. The second mode of editing, enabled by using the Tool Controls bar, creates a Spiro based path which involves both cusp ◇ and smooth ○ nodes. (3) Once a path is created the Node Tool can edit the nodes, it has an extensive set of node and segment editing features, available in the Tool Controls bar. (2) To add nodes to an existing path place the mouse cursor □ over a start/end node, the node will change color left click and either drag or click to another position on the canvas. (1) To reduce the number of nodes on a given path use the path simplify command ‣ Path ‣‣Si mplify ( Ctrl+ L). Once a path is created, there are three options for editing the path nodes. This Click-Release method is helpful when creating Spiro paths. Additional segments can be added to the first segment, by clicking on one of the end nodes. (2) By a series of Clicks and Releases, example Click on the canvas (don't drag) then move the cursor to another location and Click again this will create a path segment. (1) By dragging (press+hold) the mouse □ on the canvas. Freehand drawing can be done in two ways. The first (default) option creates freehand Bezier curves and lines. The Pencil Tool creates two styles of a path and dots (circle shapes). Pencil Tool - Bezier (Freehand) Pencil Tool: The default stroke, fill and Ctrl+ Click settings of the tools can be set using: This segment based editing also impacts the editing of Spiro paths. The Tool Controls bar can be used for many edits change selected segment(s) to a line change selected segment(s) curves delete the segment between two non-end points. Once a segment is selected (clicked) the two adjacent path nodes change color and the edit is applied by either dragging the segment or using the Tools Controls bar edits. This segment editor can also change a segment from a curve to a straight line or vice versa. When you mouse-over □ a segment the Node Tool cursor changes to a pointer with a fist. To view the red line segment editing, you must change from the Path Tool ( P, B and C) to the Node Tool ( N). There are thin red lines between path nodes and are used to edit a 'segment' between two nodes. Spiro based paths do not respond to node handle positioning edits and if the handles are retracted for auto-smooth nodes, the node will change to either a smooth or cusp node. The Cusp and Smooth Nodes have handles that are used to set the node's length (x,y value of the handle itself) its angle and distance, the 'tool-tip message' in the Status Bar displays this dynamic information. Smooth nodes can have one straight segment and one curved segment on either side of the node. A path's curve settings are provided by two types of Smooth Nodes, □ smooth and auto-smooth ○ Nodes. The start/end and corner(s) of a path are referred to as Cusp Nodes ◇ nodes along a path. Unlike the use of shape handles for editing, path objects use three types of path nodes. Converting an existing shape or text object to a path, can also create paths: Rendering of pre-configuured objects can be created using the ‣Exte nsions Menu bar features. Aths can be created by Path Tools, Pencil, Bezier, and Calligraphy, rendering and object conversions.
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