1 Curve modeling
Curves, also known as splines, are used to describe smooth curves and shapes
Generally divided into two types:
bezier curve
Nurbs curve
Add a curve:
Add --> Curve --> Bezier Curve
Press 7 to enter top view
Press TAB to edit the curve
Select the move tool and move a control point or handle
Press TAB to exit editing
Next, the curves can be converted to a mesh, or otherwise used. .
(It can be converted to a grid and then edited on points, edges, and faces)
2 Editing of Bezier curves (control points)
control point
Add a Bezier curve. edit.
When a control point is selected, handles are displayed.
control point
Two modes of operation:
1. Box selection, move or g key
2. Adjust (select and move)
handle
The handle can be extended and shortened, which will affect the shape of the curve
3 Editing of Bezier curves
1. Add control points
Subdivision: select two control points, right click, subdivide
Extrude: select the endpoint, press E key
2. Delete the control point
Merge vertices: select the control point, press the x key
In addition, press the A key to select all control points
Type of handle
Select a handle, press the V key, select the handle type
-- Free, free adjustment (left and right can be set separately)
--alignment, left and right synchronization
--Vector, directly connected (there is no curve in the middle) and converted to free when moving
- Automatic, automatic smoothing
4 grid alignment
In order to ensure the accuracy of the curve, grid alignment should be used
-- open magnet options
--Incremental mode, check absolute grid alignment
5 Free line drawing
1. In free line drawing, press F to automatically close
2. Select two points and press F to close
3. For redundant points, press X to merge
4. Curve intersection: select adjacent vertices, press V, and automatically
5. Two overlapping points: drag and press X to delete one of them
6. Allow multi-segment curves and do not require connection
7. Press the 1/3 key to draw a curve in the vertical plane
6 Use of background images
Prepare a picture as a reference for modeling
Press the 7 key to enter the top view
Add | Image | Background
Punch right attribute, object data attribute
Size, zoom image size
Add a curve, free line drawing
Key points and details:
1. The background image is only displayed in the orthographic view, not in the perspective view
2. As a background display, it will not cover the object
7 blender comes with curved shape
more curved shapes
Start the plugin Add Curve: Extra Objects
More preset curve shapes.