Shape¶

Dimensions: By default, new curves are set to be 3D, which means that control points can be placed anywhere in 3D space. Curves can also be set to 2D which constrain the control points to the curve’s local XY axis.

Resolution Preview/Render U

The resolution property defines the number of points that are computed between every pair of control points. Curves can be made more or less smooth by increasing and decreasing the resolution respectively. The Preview U setting determines the resolution in the 3D Viewport while the Render U setting determines the curve’s render resolution. If Render U is set to zero (0), then the Preview U setting is used for both the 3D Viewport and render resolution.

../../../_images/modeling_curves_properties_shape_resolution-3.png — Curves with a resolution of 3.¶

../../../_images/modeling_curves_properties_shape_resolution-12.png — Curves with a resolution of 12.¶

Twist Method

A 3D curve has control points that are not located on the curve’s local XY plane. This gives the curve a twist which can affect the curve normals. You can alter how the twist of the curve is calculated by choosing from Minimum, Tangent and Z-Up options from the select menu.

../../../_images/modeling_curves_properties_shape_twisting.png — Curves with a twist of Tangent.¶

Smooth: Interactively removes twists from the curve. This is useful if a curve has noticeable ”kinks” from over twisting; which can be possible when converting meshes to curves.

Fill Mode

Fill determines the way a curve is displayed when it is beveled (see below for details on Beveling). When set to Half the curve is displayed as half a cylinder.

../../../_images/modeling_curves_properties_shape_fill-half.png — Curves with a fill of Half.¶

../../../_images/modeling_curves_properties_shape_fill-full.png — Curves with a fill of Full.¶

Fill Solver

Triangulation solver used when filling 2D curves.

Sweep Line:: Fast triangulation method intended for well-behaved outlines. Does not support self-intersecting curves.
Delaunay:: Uses Constrained Delaunay Triangulation (CDT). More robust and supports self-intersecting curves, at the cost of being slower.

Fill Rule

Fill rule used by the Delaunay Fill Solver to determine which regions are considered inside.

Even-Odd:: Alternates inside/outside based on the number of boundary crossings. Overlapping regions may cancel out depending on the crossing count.
Non-Zero:: Determines inside/outside based on winding direction. Overlapping curves with the same winding direction are filled as a union, while opposite winding directions can create holes.

Curve Deform

Radius: Causes the deformed object to be scaled by the set curve radius. Utilized when using a curve as a path or when using the Curve Modifier.

Stretch: The Stretch curve option allows you to let the mesh object stretch, or squeeze, over the entire curve. To get the expected result, use this together with the Bounds Clamp option. Utilized when using the Curve Modifier.

Bounds Clamp: When this option is enabled, the object and mesh offset along the deformation axis is ignored. This can be useful with the Stretch option or when using a negative axis. Utilized when using the Curve Modifier.