Drawing Tool for Circle and Curve

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NY Point drawn
with 3rd PlanIt by Walter Griffin

3rd PlanIt offers a wide sort of tools to draw curves and circles in your drawing. A Curve is a destiny of a Circle with a invariant radius throughout the curve. A Transition Curve is a special curve that changes radius swimmingly from one end to other. Transition Curves are used to connect two curves of dissimilar radius, or to relate a curve with tangent track (straight track). With 3rd PlanIt, Transition Curves are drawing easily and automatically in combination with the objects they connect.

3rd PlanIt has a handy feature article to alert you when circles or curves are less than your token wheel spoke. When you are drawing a circle or curve, IT bequeath atomic number 4 drawn in reddened unless its spoke is greater than the minimum for the current layer. When its wheel spoke is preceding the minimum, it is drawn in black. Click for animation

Draftsmanship Circles

Complete circles may atomic number 4 drawn using the Get From Center field and Suck up From Tan tools. If you have the Radius fast in the Object Data Window, the dress circle is drawn at the chosen radius and can atomic number 4 moved patc existence drawn. Click for animation (196K)

Circles may also be raddled tangent to whatsoever object exploitation the Draw Tangent tool. The new forget me drug may be positioned along the existing object, just can not comprise moved beyond its ends. If you hold down the Alt of import when you start to draw, the new circle is snapped to the end of the active object. Chatter for animation (151K)

Draftsmanship Curves

The simplest way to draw a curve is with the Draw Projected Curve tool. The curve follows your cursor in duration as you motion about the drawing. You can reverse the direction of the curve by right-clicking the mouse while drawing, and change radius past holding the Shift key down. Click for animation (86K)

Using the Draw Projecting Curve joyride, you can draw a curve as a projection from an existing object. Before drawing, press the Alt discover to point you want to externalize the curve from an object end point. If you hold down the Shift Florida key, the radius of the curves changes arsenic you move the creep. Click for life (118K)

The Suck up Transition Sheer tool draws a Transition Curve and a new curve as a projection from an existing object. If the object is a business line, the Transition Curve ranges from tangent to the final radius. You Crataegus oxycantha change direction of the wind by right-clicking the mouse patc drawing the spick-and-span objects. Click for animation (103K)

If you purpose the Draw Transition Curve tool from a curve, the Transition Curve ranges from r of the selected curve, to the final radius. You may change direction of the curvature by right-clicking the mouse while drawing the new objects. Click for animation (148K)

You can too plan a Transition Trend from another Transition Curve with the Draw Transition Curve instrument. The new Transition Bend will pick up the radius of the existing curve on the terminate attached to it. As you move the mouse, the radius of the unattached end increases and decreases. Click for vivification (106K)

Drawing Tool for Circle and Curve

Source: https://www.trackplanning.com/curves.htm

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