Rhino cơ bản - Curves - Arc tool - Rhino Việt | Hướng dẫn phần mềm Rhino 3D

Draws an arc.

Draws an arc using a center location, one end point, and a second end point or an angle.

Steps

Pick the center of the arc's radius.

Pick the arc's first endpoint.

This point is also the arc's start point.

Pick the arc's second end point or type an angle.

Options

Deformable

Draws a NURBS approximation of the arc.

Degree

Specifies the degree of the curve (or surface).

When drawing a high-degree curve, the output curve will not be the degree you request unless there is at least one more control point than the degree.

PointCount

Specifies the number of control points.

Extension

Extends a curve with an arc by picking the arc's endpoint.

Steps

Pick the curve to extend.

Pick the arc's end point.

Extension options

Center

Extends a curve with an arc by picking the arc's center and endpoint.

Steps

Pick the arc's center point.

Pick the arc's end point.

Notes

The arc extension is not joined to the original curve.

To draw an arc extension and join it in one step, use the Extend command.

The center point is constrained to a plane perpendicular to the curve end. If the extension is drawn in a view perpendicular to the constraint plane, the input will be automatically locked parallel to the construction plane.

In other views Rhino tries to make sure one of the ortho directions is parallel to the construction plane. Press the Shift key when making the pick to maintain the ortho direction.

Length

Type a positive or negative number or pick two points to specify the arc curve's length.

StartPoint

Draws an arc starting from the arc's first end point.

Steps

Pick the arc's start point.

Pick the arc's end point.

Click a location the arc passes through.

StartPoint options

Direction

Specifies the direction of a line tangent to the arc's first end point.

Steps

Pick a start point.

Pick a tangent direction.

Pick an end point.

ThroughPoint

Specifies a location the arc curve must pass through.

Steps

Pick a start point.

Pick a location.

Pick an end point.

Center

Specifies a center point for the arc's radius.

Steps

Pick a center point.

Tangent

Draws an arc tangent to two curves with an option to specify a radius.

Steps

Select a tangent curve.

Select the second tangent curve, or type a radius to restrict the arc to the specified radius.

If a tangent point exists on the second curve that meets the radius requirement, the tangent constraint will appear at that point as you drag the arc around.

Select a third tangent curve, or press Enter to draw a circle.

Click to choose the arc direction from the options displayed when the mouse is dragged.

Tangent options

Point

Releases the command from the tangent constraint. Pick a point not on the tangent curve for the arc to pass through.

FromFirstPoint

Forces the arc to go through the first picked point on the curve instead of allowing the point to slide along the curve.

Radius

Specifies a radius. If a tangent point exists on the second curve that meets the radius requirement, the tangent constraint will appear at that point as you drag the circle.

Tilted

Draws an arc whose plane is tilted from the current construction plane. In a different viewport or with elevator mode, pick the start of the tilted arc, and specify the arc's orientation.