Flexi Bezier Tool

The Bézier Toolkit add-on has a number of utility ops and tools for working with Bézier curves in Blender. The important ones are:

  • Flexi Draw Bézier for quickly creating Bézier curves
  • Flexi Edit Bézier for interactively editing the curves in Object Mode (features include: direct segment editing by dragging any point on curve, adding points at any position on segment, deleting segments / points and uniformly subdividing the segments)
  • Flexi Grease Bézier for creating Grease Pencil Bézier strokes

All the above tools are backed by a flexible Snapping and Locking Framework , that allows (among other things): locking the curve or curve segments to a plane / axis or to any face of the active object as well as entering coordinate values via keyboard for precision drawing and editing.

Some other ops in the toolkit are:
Join Bézier Curves: Joins multiple curves with curve segments or straight lines (close points are merged together)
Paste Length: Makes the selected curve objects the same length as the active one
Split Bézier Curves: Splits curves into individual splines, segments or even Bézier points :slight_smile:

Playlist with all the videos related to the toolkit: https://www.youtube.com/playlist?list=PLxsh4i5F_h9G6QFoPzKvBRMayz8533fSW

Download location:


Script file: blenderbezierutils.py

Suggestions, feedback and bug reports are welcome :slight_smile:

(For bug reports, you might want to consider using the Github Issues page for better tracking.)

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Looks super usefull! I was really missing an intuitive way to create curves in blender very fast, great work!

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Thank you very much for this fantastic addon! The addon is very useful and will be a part of my daily work.

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Dope addon!!
Thanks for sharing!

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Great job. It’s a great tool.:clap:
This is similar to the operation of vector paint software such as Adobe Illustrator.

Suggest

  1. We think that it is good to prepare a shortcut that is easy to access from the left hand
  • Confirm the operation and make it a curve … Space
  • Move back one operation … Ctrl + Z
  1. I think the add-on’s panel should be in “Tools” instead of “Tool”

I need a handle reset, add / delete function for existing segments like Illustrator.
If you can do this, you will be able to do most of the work of curve creation.
(It’s a greedy proposal, so I don’t think it’s essential if you think it’s a hassle)

  1. Adjust the handle of the existing segment at the clicked position by dragging again
  2. Add a new segment at the clicked position
  • As far as I know, there is no way to add a segment in the middle of a curve except to select two segments and perform Subdivide. I want to make a segment at a specified position by clicking directly.
  1. Delete the segment existing at the clicked position

Bug report

  • When dragging on an object and trying to start drawing, the object sometimes moves.
    • It seems that this phenomenon is likely to occur if you drag it quickly
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Great addon, keep up the good work!

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really great addon, blender missing better bezier tools, thank you very much.

missing snap on another objects (face, vertex, edge…)

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Wow, this is amazing! Only C4D was able to draw bezier curves like Illustrator does and now we have them on blender with this addon!

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This is really a very useful addon.
Great work!

A little Bug.
If I create a spline in frontal view and then change it from Shape ->3D to 2D, the spline is only a line.

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Thank you for the detailed feedback and suggestions.

  • I am a little hesitant to change the shortcuts now since the video is already published. I would shortly add right click to combine confirm + new curve, which is likely to be used quite frequently. Hope that would help.
  • The area reserved for external add-ons is, I guess , Active Tool & Workspace Settings. That’s the reason why I have created all my add-on panels in this area. Again unless there is a good reason to change this, I think it’s better to continue with it as otherwise the video and documentation will need to be changed.
  • I am planning to work on the feature to adjust the segment curvature by dragging a point on it. Maybe that would meet some of your requirements.
  • Have not used illustrator so not sure of the reset and other functionality you mentioned. Maybe you could upload a video illustrating that and I will implement it if it’s doable :).

About the bug report… do you use LMB for selecting the objects? I might have missed that because I have the old Blender way of selection with RMB.

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That is because the z coordinate of all the points of a 2D curve is zero. By converting 3d to 2d you effectively remove one (z) dimension.
The curves created by this tool are no different than the ones created by Blender. So if you create a similar curve using Blender, you will get the same result.
(Just try adding a standard Bezier curve, rotate by 90 degrees on x and apply transform. Now if you convert to 2d, it will be a line)

Yes, I do.

The problem with snapping to vertices of mesh objects is there can potentially be a very large number of them in a blend file. So it will not only have performance issue but maybe also ineffective. One option could be snapping to vertices of vertex group. Let’s have some more ideas around this :slight_smile:

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It’s great. This sets a standard.

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I am a little hesitant to change the shortcuts now since the video is already published. I would shortly add right click to combine confirm + new curve, which is likely to be used quite frequently. Hope that would help.

Please add more shortcuts, leaving the existing shortcuts.
The operation to confirm with space is the same as the knife tool and loop cut. It can be said that it looks like Blender operation.

I am planning to work on the feature to adjust the segment curvature by dragging a point on it. Maybe that would meet some of your requirements.

Good😃

Have not used illustrator so not sure of the reset and other functionality you mentioned. Maybe you could upload a video illustrating that and I will implement it if it’s doable :).

Master the Pen Tool in 30 Minutes | Photoshop In-Depth Tutorial - YouTube

The above video is a reference video.
In the 16:00 of the video, I will show you how to create a heart-shaped curve.
Video is a Photoshop tutorial, but it has the same functionality as Illustrator.

About the function of “.3” that I proposed in the first reply
In the video, you can “Alt-Drag” on an existing segment to create handles and adjust the length and angle of both handles simultaneously.
“Alt + Click” on an existing segment will delete the handle.
In addition, you can adjust one of the handles just like a free handle by “Alt + Drag” only one of the handles.

Other

  • Click on a segment to delete the segment.
  • Click on a curve to add a segment.
  • Alt-Drag on the curve to add segments, create handles, and adjust the length and angle of both handles at the same time.
  • Ctrl-Drag on a segment moves the segment.

About the bug report… do you use LMB for selecting the objects? I might have missed that because I have the old Blender way of selection with RMB.

Yes, I set the selection to LMB.

This awesome tool should be in the final master build, thanks for sharing!

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Fantastic work! Feels like the pen tool in Illustrator.

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Found a way to change the curve to 2d. Press 7, draw the curve in top view and you will be able to change it to 2d. Then you can rotate it on x axis.

great tool but if you accidentally rotate orthoview you can’t get back with alt+middlemouse drag like in default blender hotkey for jumping back and forth orthomodes (I don’t have numpad I need this feature)

Hi artoonick,
after you draw your Object in Front-View.
Go into Edit-Mode, rotate all Points x-90.
Go into Object-Mode, rotate x 90.
Change the curve to 2D.

An automatic like the Align to View function would be an nice addition.

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