thomthom / true-bend

Bends instance to a given degree or radius, preserving the original length.

TrueBend

SketchUp extension allowing you to bend instances to a given degree or radius, preserving the original length.

Example Usage

The length of the reference segment is preserved as the instance is bent:

Use the VCB to enter an accurate bend angle:

Use the VCB to adjust the segmentation by appending "s":

Toggle soft+smooth for the newly created edges:

VCB Input

By default the VCB accept bend angle. But you can switch to other modes by appending a unit type:

• Angle Input: 45deg
• Segment Count: 8s
• Bend Distance: 500mm (This should be a value less than the width of the bottom from bounding box segment.)

true-bend's Issues

Set Radius as default bend input

https://forums.sketchup.com/t/truebend-plugin-question/113830

Add toolbar button

Support picking edge as reference for bend

Add project README

Enter sagitta

There are multiple requests for entering sagitta. This is somewhat a challenge to compute (See #13). Found a solution that worked for angles less than 180 degrees. But failed after that. Maybe being able to bend up til 180 degrees can work for most cases?

Wire up ErrorReporter

Change how bend is controlled by mouse

Change to dragging the reference segment. Using Directional cursor from TT_Lib.

Draw a circular plane at mid point of reference segment, with arrows pointing in each direction - to indicate to the user that this can be interacted with.

Made debug visualisation configurable

Put various debug visualisation behind feature toggles exposed via debug menu.

Curves/Arcs doesn't bend without exploding

Entering 1s or 0s in VCB cause errors

Persist Tool options

Segmented and Soft+Smooth isn't persisted across tool sessions.

Optimize `draw`

Lots of stuff is re-computed on every draw. Create DrawingCache (copy from other project) and split the drawing logic into bucket of when they need to re-compute.

The drawing for the selected instance doesn't change until the geometry change. This can be cached longer.

The bending preview needs to be updated upon user input.

Clear up length VCB input

Currently it says "Distance", and in the viewport you see a number for the radius. But when entering a length instead of an angle it represent the sagitta.

Need to make this clearer.

Don't reset bend handle after each adjustment

Preserve the handle size.

Or, remember the distance and make the handle adjust relative to previous value.

Right now it starts fresh using the handle as absolute adjustment value.

Support nested instances

Check in test models

Enter radius

https://extensions.sketchup.com/en/comment/106756#comment-106756

it would be great to input the radius. is this possible? i mean something you can impliment?
I have a half circle with radius 3800mm. i need to break this down into 4 ft lengths (sheet size). if i could draw a 4ft length then give it a radius... solves problem - 'True Bend' keeps original length!??

This might also be challenging, similar to computing based on sagitta...

Which version to work with SketchUp 15?

Would you please direct me to a version of this wonderful TruBend plugin that works with SketchUp Make 15?
Thanks

Grid not always displayed correcty

When the component origin doesn't match the bottom left corner it's drawn incorrectly.

Bend is incorrect when instance is not parallel to the ground

Visualize segment options

When toggling on the option to segment the bent shape, visualize it in the viewport.

Errors after setting bend to zero

http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3629
http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3626
http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3622
http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3616
http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3615
http://sketchup.thomthom.net/extensions/TT_TrueBend/signatures/similar/signature/3620

Support picking arbitrary bounding box edge

Extending non-transient object, clashing with other extensions

Dezmo has reported in the SketchUp forum that his code clashes with TrueBend, after TrueBend has been used. Calling PickHelper#pick_segment inside his namespace with seemingly malformed arguments raises an exception in TrueBend's HighDpiPickHelper.

https://forums.sketchup.com/t/truebend-re-defined-method-for-pick-segment-points/87777

It appears TrueBend is extending a PickHelper object that isn't actually transient, but reused as return value by View#pick_helper method.

https://github.com/thomthom/true-bend/blob/master/src/tt_truebend/dpi/view.rb#L126

Running this snippet over and over shows the same object ID being re-used.

Sketchup.active_model.active_view.object_id

To fix this clash, perhaps the delegation pattern could be used inside HighDpiPickHelper just as it is used HighDpiView.

Update README on input units

Explain how to switch between Degree and Distance.
Explain what Distance is.

Deleting error mid-bend causes errors

Preserve UV mapping

Not sure how feasible this is, but worth a shot. Not sure how easy it will be with ngons bending etc.