Entries from June 2009 ↓

You can change the angle of arcs, and you can change the length of open lines, arcs, open polylines, elliptical arcs, and open splines. The results are similar to both extending and trimming. You can alter the length in several ways:

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You can extend only open polylines (unjoined first and last line or arc polyline segments). Either the first or the last edge extends as if it were a line or arc object.

Wide polylines extend so the centerline intersects the boundary. Because the ends of wide polylines are at a 90-degree angle, part of the end extends past the boundary if the boundary is not perpendicular to the extended segment. If you extend a tapered polyline segment, the width of the extended end is corrected to continue the original taper to the new endpoint. If this correction gives the segment a negative ending width, the ending width is forced to 0.

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You can use the Scale grip mode to scale objects. For example, you can increase the size of a circle by dragging outward from the base grip or decrease the size by dragging inward. Alternatively, you could enter a value for relative scaling. In the following example, the outlet symbol, which is defined as a block, is scaled down. When selected, blocks have a single grip at the insertion point. To scale the block, you select the insertion point as the base grip and move the cursor to resize the block.

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In this example, you extend the three horizontal lines to an implied boundary, which is where they would intersect the single line if it were extended.

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You can extend objects so they end precisely at a boundary defined by other objects. You can also extend objects to where they would intersect a boundary. This is called extending to an implied boundary. In the following example, you extend the lines precisely to a circle, which is the boundary.

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