Rounds the cursor coordinates to the nearest minor grid intersection. The minor grid spacing is derived from the main grid size divided by the minor-line factor configured in the Grid settings.

Как это работает

1. 1Rounds cursor X and Y to the nearest minor grid multiple.
2. 2Has the lowest snap priority – all other snaps override it.
3. 3Skipped during Move Point operations so individual point dragging stays smooth.

Locks the cursor to the nearest point object within the snap threshold. The candidate pool includes standalone points, image corner points, construction-line reference points, and block-instance snap points.

Как это работает

1. 1Collects all visible points, image corners, construction-line origins, and block snap points.
2. 2Snaps to the nearest candidate within the snap threshold.
3. 3Does not fire on a point that is itself being moved.

Activates only during selection moves. Tests each endpoint of moving lines against nearby static vertices and adjusts the entire move offset so moved geometry lands exactly on an existing node.

Как это работает

1. 1Collects all endpoints of selected lines being moved.
2. 2Tests each moving endpoint against static vertices + block snap points.
3. 3Adjusts the whole move delta so the nearest matching endpoint pair aligns.

Targets endpoint-type anchors across all geometry: line and arc endpoints, circle centers, axis endpoints, and dimension/leader anchor points. The nearest anchor within threshold wins.

Как это работает

1. 1Tests all line endpoints, arc endpoints, circle centers, axis nodes, and dimension anchors.
2. 2Snaps to the nearest one within threshold using a priority queue.
3. 3Does not fire on an endpoint currently being moved.

Snaps cursor X and/or Y coordinates independently to nearby line endpoints and points, showing dashed inference guides. This creates SketchUp-style horizontal and vertical alignment without explicit gridlines.

Как это работает

1. 1Scans line endpoints within horizontal and vertical threshold of the cursor separately.
2. 2Locks X to the nearest node at the same X value, Y to the nearest node at the same Y value.
3. 3Deferred when Normal, Extension, or other strong intent snaps are active.

Snaps to computed midpoints of lines, the mid-sweep angle of arcs, arc center points, and the midpoints of structural gridlines. Nearest qualifying candidate under threshold wins.

Как это работает

1. 1For lines: computes geometric center point between p1 and p2.
2. 2For arcs: tests both the mid-sweep arc point and the arc center.
3. 3Also tests midpoints of structural gridlines.

Для круги, tests the four cardinal points along the rim (0°, 90°, 180°, 270°) and snaps to the closest one. This is the circle-equivalent of Snap to Line Ends for the rim geometry.

Как это работает

1. 1Scans all visible circles (not arcs).
2. 2Calculates four quadrant rim points from center + radius at 0°, 90°, 180°, 270°.
3. 3Snaps to nearest quadrant point within threshold.

Nearest-point snap: projects the cursor perpendicularly onto the closest geometry (линии, SkyCiv Section Builder позволяет добавить отверстие, construction lines, оси) within a very tight screen-space threshold. A dashed guide is drawn from cursor to the foot.

Как это работает

1. 1Projects cursor onto every nearby candidate geometry element.
2. 2Fires only when cursor is extremely close to the geometry (tight ~10 px screen threshold).
3. 3Draws a dashed perpendicular guide from cursor to the snap foot.

Activates when the cursor is near a line endpoint and the drawing start point is on or near that line. Locks cursor movement to the implied infinite extension of the line beyond its segment end.

Как это работает

1. 1Detects when cursor travels away from a line endpoint along the line direction.
2. 2Locks cursor to the projected infinite line direction beyond the segment end.
3. 3Deferred when Adjacent Nodes snap is more appropriate for the cursor position.

During line or polyline creation, constrains the new segment to run exactly perpendicular from the start point relative to a candidate base line. Uses a 2° angular dead-zone to activate smoothly.

Как это работает

1. 1Detects when the cursor direction from start is within 2° of perpendicular to a nearby base line.
2. 2Locks the endpoint to the exact perpendicular ray through the start point.
3. 3Works for both simple lines and polyline segments.

Projects the active начальная точка perpendicularly onto nearby candidate lines and construction lines and snaps to that perpendicular foot if within threshold. Finds the point where a perpendicular from start meets existing geometry.

Как это работает

1. 1Projects start point perpendicularly onto each candidate line and construction line.
2. 2Snaps cursor to the foot point if within normal snap threshold.
3. 3Uses infinite-line projection so both line extension and finite segment are considered.

Normal from Edge stores a designated constraint line and then locks all cursor movement to the normal (перпендикуляр) ray of that edge through the start point. Other snaps can resolve to intersections along this ray.

Как это работает

1. 1Hover near a line to designate it as the normal constraint edge.
2. 2Cursor is projected onto the normal ray through the start point.
3. 3With Line Ends / Touch / Intersection active, snap resolves to crossing geometry along the ray.

Creates horizontal and vertical alignment guides through an acquired reference point. The cursor snaps when it falls within threshold of these guides, and two intersecting guides can be compound-locked to their exact crossing.

Как это работает

1. 1Hover over a node to acquire it as the alignment reference point.
2. 2Snaps cursor X to the reference when within threshold (vertical guide), or Y (horizontal guide).
3. 3When two guides from different nodes overlap, a compound snap locks to their exact intersection.

Detects a target line under the cursor and constrains the endpoint of the new segment to lie along a parallel direction from the start point. The target line defines the direction; start point defines the origin.

Как это работает

1. 1Finds the nearest line under the cursor.
2. 2Projects cursor to the closest point on that line, then uses the target-line direction as the parallel vector.
3. 3Snaps endpoint to the parallel ray from start point at the projected length.

Projects the cursor onto the infinite extended path of structural gridline objects. Uses the configured axis extension distance to reach beyond the drawn gridline segment ends.

Как это работает

1. 1Extends each gridline by the axis extension distance in both directions.
2. 2Projects cursor perpendicularly onto the extended line.
3. 3Snaps to closest foot point within threshold.

Treats each construction line as infinite in both directions. The cursor is projected perpendicularly onto the infinite line and snaps to the nearest projection point within threshold.

Как это работает

1. 1For each construction line, computes the nearest point on its infinite direction from cursor.
2. 2Snaps cursor to the closest valid foot point within threshold.
3. 3Hidden construction lines are excluded.

Computes true geometric intersections between all combinations of lines, SkyCiv Section Builder позволяет добавить отверстие, круги, extended gridlines, and infinite construction lines, then snaps to the nearest one within threshold.

Как это работает

1. 1Computes line–line, line–arc, and arc–arc intersection pairs within the search area.
2. 2Includes extended gridlines (with axis extension) and infinite construction lines in intersection tests.
3. 3Snaps to the nearest valid intersection point within threshold.

Tests the four corners and four edge midpoints of PDF export page frames and snaps to the nearest one. требует Show PDF Frames to be enabled.

Как это работает

1. 1Reads all current PDF export page frame geometries.
2. 2Тесты 4 corners + 4 edge midpoints per frame.
3. 3Only active when Show PDF Frames is enabled in settings.

Snaps to the anchor position of text objects. Useful for aligning leaders, размеры, or other annotation elements to existing text insertion points.

Как это работает

1. 1Collects the insertion position of every visible text object.
2. 2Snaps cursor to the nearest anchor within threshold.
3. 3Off by default on startup – enable only when needed for text-alignment workflows.

Adds the boundary vertices of hatch objects to the snap candidate pool, including line endpoints, arc key points, and circle centers within hatch loops.

Как это работает

1. 1Scans all hatch loop segments for line start/end points and arc key points.
2. 2Adds them as end-type snap candidates, same priority as Snap to Line Ends.
3. 3Skips hidden hatches.

Length Step rounds the active segment length to the nearest multiple of the configured step value while drawing or modifying. Useful for modular and regular-spacing drafting.

Как это работает

1. 1Active only during line creation or modification.
2. 2Rounds current segment length to the nearest multiple of the step value.
3. 3Endpoint moves to the snapped length along the current direction.

Angle Step quantizes the drawing direction to the nearest multiple of the configured angle increment. Essential for engineering drafting with standard angular constraints (например, 15°, 30°, 45°).

Как это работает

1. 1Rounds cursor direction to the nearest multiple of the step value.
2. 2Active during line creation, modification, and align operations.
3. 3Can combine with Snap to Align to find stepped-angle intersection points.

А master on/off switch for all snap detection. Turning snaps off does not reset individual snap options – turning snaps back on restores the exact same configuration as before.

Как это работает

1. 1Click Toggle (или нажмите Shift+S) to disable all snap detection at once.
2. 2All individual snap checkboxes remain in their current state.
3. 3Toggle again to restore snapping with the previous configuration.