Draw Feature

The editing tools are divided into three sections: Editing Contours, Editing Vectors, and Drawing Features.

Draw Feature

Surface Feature

Interact with the mouse to break contours in surface features.

1. Click the left mouse button to select a polygon or closed polyline.
2. Continue clicking the left mouse button to select additional polygons or closed polylines, or right-click to trim surface features.

Bilinear Feature

Interact with the mouse to break contours in linear features.

1. Click the left mouse button to select the first line.
2. Click the left mouse button to select the second line to trim linear features.

Join Contour

Interact with the mouse to connect contours within a selected area.

1. Click the left mouse button to select the first point of the break area, continue clicking until the area is selected.

2. During the selection, you can right-click to undo a point, and double-click to end the box selection and start connecting contours within the area.

3. Repeat step 1 to connect the next break area.

Parameters

• Straight Connection: Connect endpoints of contours with the same elevation directly within the area.

• Curve Connection: Smooth the connected contours within the area using Bezier curves based on the direct connection.

  • Sampling Interval: Specify the average distance between adjacent points after smoothing.

Join Two Contour

Interact with the mouse to connect selected contour lines.

1. Click the left mouse button to select the first contour line.
2. Continue to select the second contour line. If the elevations are the same, connect the two closest endpoints of the contour lines.

Editing Vectors

Basic vector editing tools needed for contour editing.

Break at Point

Interact with the mouse to break a polygon at a point.

1. Click the left mouse button to select the polyline, B-spline, or Bezier curve to edit, or right-click to exit editing.
2. Click the left mouse button to select an intersection point on the polyline, or right-click to end the current edit and start a new one.
3. Right-click to exit break at point.

Break in Line

Interact with the mouse to break a polygon at a line.

1. Click the left mouse button to select the polyline, B-spline, or Bezier curve to edit, or right-click to exit editing.
2. Click the left mouse button to select the first intersection point on the polyline, or right-click to end the current edit and start a new one.
3. Click the left mouse button to select the second intersection point to complete the break, or right-click to undo and reselect the first intersection point.
4. Right-click to exit break at line.

Trim

Interact with the mouse to trim polygons.

1. Click the left mouse button to select a polyline, rectangle, or closed polyline as a baseline, or right-click to exit editing.
2. After selecting a baseline, click the left mouse button to continue selecting baselines, or right-click to prepare to select vectors to be trimmed.
3. In the trimming selection mode, click the left mouse button to select the vector to be trimmed, which will delete the vector based on the intersection with the baseline.
4. Right-click to revert to reselecting the baseline, and right-click again to exit trimming.

Note: Trimming is based on intersection points in the xy plane, regardless of the elevation of the vector.

Join Polylines

Interact with the mouse to merge polylines.

1. Click the left mouse button to select the starting or ending point of the first vector line, and right-click to exit.
2. Click the left mouse button to select the starting or ending point of the second vector line to complete the merge.

Merge Polylines

Interact with the mouse to combine multiple polylines.

1. Click the left mouse button to select multiple non-closed vector lines (polylines, B-splines, or Bezier curves), then use the combine function to merge the selected vectors.
2. After activating the combine function, click the left mouse button to select the vectors to be combined, and right-click to merge the selected vectors.
3. Click the left mouse button to select one vector, then right-click to prepare to select another vector. Click the left mouse button to select the second vector and complete the merge.
4. Right-click to exit combining.

Intersect Polylines

Interact with the mouse to intersect polylines.

1. Click the left mouse button to select the first vector line to intersect, or right-click to exit editing.
2. Click the left mouse button to select the second vector line to intersect, or right-click to revert to step 1.
3. Choose the intersection points to complete the intersect operation.

Add Node

Interact with the mouse to add nodes to polygons.

1. Click the left mouse button to select the polyline or polygon entity to edit, or right-click to exit editing.
2. Click the left mouse button to add a node at the selected position on the polyline or polygon entity, or right-click to end the current edit and start a new one.
3. Right-click to exit adding nodes.

Append Node

Interact with the mouse to append nodes to the start or end of polylines, B-splines, or Bezier curves.

1. Click the left mouse button to select the polyline entity to edit, or right-click to exit editing.
2. Click the left mouse button to select a point to determine the insertion position based on distance. If closer to the start, add the point before the start; otherwise, add it after the end. Right-click to end the polyline editing and start a new one.
3. In the property panel on the right, select the type of segment to append (polyline, B-spline, or Bezier curve), defaulting to polyline. Click to switch between the three types.
4. Right-click to exit appending nodes.

Here is the translation of the provided text into English:

Editing Tools

Delete Node

Edit polygons to delete nodes through mouse interaction.

1. Left-click to select the polyline or polygon entity you want to edit, or right-click to exit editing.
2. Left-click on the polygon entity's node to delete it, or right-click to end the current edit and start a new one.
3. Right-click to exit node deletion.

Smooth and Simplify

Perform smoothing or simplification operations on polylines.

1. Click the line smoothing and simplification button to open the parameter settings window.
2. Select the vector line object and execute the operation.

Parameter Settings:

• Smooth: Whether to apply smoothing.
• Filter Distance: Effective when smoothing is enabled; specifies the average distance between adjacent points after smoothing.
• Simplify: Whether to apply simplification.
• Filter Distance: Specifies the maximum deviation distance from the line to retain points. As the distance decreases, more points are retained and fewer are removed from the line.

Point

Draw points to mark point features using mouse left-click. The steps are as follows:

1. Left-click to select the location for the point entity.
2. Repeat step one to draw additional points.
3. Right-click to finish drawing point entities.

Two-Point Polyline

Draw line segments to mark linear features using mouse left-click to draw the starting point. The steps are as follows:

1. Left-click to select the starting point of the line segment, or right-click to finish drawing the line segment.
2. Left-click to select the ending point of the line segment, or right-click to revert to step one.
3. Right-click to finish drawing the line segment.

Draw Polyline

Draw polylines through mouse interaction to mark linear features.

1. Left-click to select points, or right-click to exit polyline drawing.
2. Repeat step one to add more points, or right-click to finish the current polyline drawing. To close the polyline, click the close button, and repeat step one to start a new polyline drawing.

Line Parallel

Draw multiple parallel polylines through mouse interaction to mark linear features.

1. Configure the parameters on the right to control the spacing and repetition quantity, as well as the repetition direction.
2. Left-click to select points, or right-click to exit polyline drawing.
3. Repeat step one to add points, or right-click to finish the current polyline drawing. Repeat step two to start a new polyline drawing, and adjust parameters during the drawing process.

Polygon

Draw polygons through mouse interaction to mark area features, with functions for adding and deleting nodes.

1. Left-click to select points, or right-click to exit polygon drawing.
2. Repeat step one to add more points, or right-click to finish the current polygon drawing. Repeat step one to start a new polygon drawing.
3. Right-click to exit polygon drawing.

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