精确建模

Constrain cursor movement

To Cartesian coordinates.
To an angle.
To a distance from the last point.
To both an angle and a distance.
Vertically from the construction plane.
To x-, y-, and z-coordinate points.
To relative coordinates.

Snap to the cursor to a specific location on an object

物件锁点

Constrain the marker to an exact location on an object such as the center of a circle or the midpoint of a line.

Osnap

Set object snaps state.

AlongLine object snap

沿着一条轨迹直线。

AlongParallel object snap

沿着与参考直线平行的轨迹线。

Between object snap

锁定两个点之间直线距离的中点。

Center object snap

Snap to the center of a circle, arc, closed polyline, or annotation text bounding box.

End object snap

Snap to the end of a curve.

From object snap

锁定距离基准点某个距离的点。

Intersection object snap

可以锁定两条曲线、两个边缘或曲面结构线的交点。

Knot object snap

Snap to a knot on a curve or surface.

Midpoint object snap

Snap to the midpoint of a curve or surface edge.

Near object snap

可以锁定到曲线上最接近鼠标光标的位置。

NoSnap object snap

Turn off persistent object snaps for one pick.

OnCrv object snap

限制只能锁定在选取的曲线上。

OnPolysurface object snap

限制只能锁定在选取的多重曲面上。

OnSurface object snap

限制只能锁定在选取的曲面上。

Perpendicular (To) object snap

可以锁定曲线上的垂点。

PerpendicularFrom object snap

锁定到与曲线垂直直线的轨迹线上。

Point object snap

Snap to a point object, control point, edit point, and block or text insertion point.

Quadrant object snap

锁定一条曲线在目前的工作平面 X 或 Y 座标最大值或最小值的点。

Tangent (To) object snap

可以锁定曲线上的正切点。

TangentFrom object snap

鼠标标记只能在与一条曲线正切的轨迹线上移动。

Vertex object snap

可以锁定网格顶点。

请参考

Set model units

Pick a location