Snapping

NullCad supports several snap modes, which apply while using drawing and modify tools:

• Endpoint — snap to the start/end of a line or polyline segment.
• Midpoint — snap to the midpoint of a segment.
• Nearest — snap to the closest point on a geometry.
• Grid — snap to a configurable grid spacing.
• Intersection — snap to the intersection of two line segments.
• Perpendicular — snap from a base point perpendicular to a line.
• Angle constraint — constrain the next point to specific angle increments from the previous point.

Active snap modes

Rather than always snapping to whatever is closest, you can manually select which intersection to use when multiple candidates are nearby, or average multiple points together to derive a snap location.

Configuring snapping

Snap settings (which modes are active, grid spacing, tolerance) are available from the snap configuration panel and persist with the document state.