[Plugin] FredoBend - v1.5a - 30 Jun 26

TIG

@fredo6
I think it's best for a bent object's geometry to follow a 'curve' and start perpendicular to the start/end segment. But if the path is a full circle the bending should start perpendicular to a mid-segment, to keep the objects 'endmost' dimensions correct: and if it's around an arc [partial circle] that's user-defined it should be treated like any other curve: but if it's a swept form around a notional partial-circular path, that should then start/end perpendicular to a half-segment - that way the bent form stays as dimensionally true as it can be.

fredo6

NEW RELEASE: FredoBend v1.4a - 20 Jun 26

Requirements

LibFredo6: v15.9a or above
Sketchup version: SU2017 and above

FredoBend 1.4a is a maintenance release including:

Bug fixing
Technical adjustments
functional adjustments

Note that applying the Circular Bend tool to a component will impact all other instances. So, if this is not intended, please make sure you make the component instance unique before.

Home Page of FredoBend for information and Download.

Main post of this FredoBend thread.

fredo6

NEW RELEASE: FredoBend v1.5a - 30 Jun 26

Requirements

LibFredo6: v15.9a or above
Sketchup version: SU2017 and above

FredoBend 1.5a is a major release including:

Introduction of the Dome tool
Bug fixing
Technical adjustments
functional adjustments

Note that applying the Circular and Dome Bend tool to a component will impact all other instances. So, if this is not intended, please make sure you make the component instance unique before.

Home Page of FredoBend for information and Download.

Main post of this FredoBend thread.

Rich O Brien

@fredo6 Dome works great. Do you plan to add support to maintain UVs?

fredo6

@Rich-O-Brien said:

@fredo6 Do you plan to add support to maintain UVs?

Maybe, although I am not entirely sure there is a technical solution. What is sure is that it is not trivial and there will be an impact to performance.

fredo6

I really need to investigate deeper what is going on.

The generation is done by deformation, that is, without creating geometry, just moving vertices.

In the meantime, there is ThruPaint to correct the issues.

FredoBend and UVs.mp4

jonorman

Hi. Would editing radius be a possibility as well as angle ??

fredo6

@jonorman said:

Hi. Would editing radius be a possibility as well as angle ??

Yes. But are you sure you know what the radius value would be?

jonorman

@fredo6 Yes, it would be nice to either give angle value, or radius. Maybe following: If you change angel in the angle value, the radius automaticly update, and if you then if you change the radius value the angle value would update.. If that is possible. If this make sense

fredo6

Yes, indeed. Rdaius and angle are related. My question is whether you know in your model what value of radius you would enter?

panixia

@fredo6 said:

whether you know in your model what value of radius you would enter

To be fair, I see quite a lot of real world use cases where it's easier to know which radius is needed, rather than the angle.
Sounds like a reasonable feature request.

fredo6

This is a reasonable feature request for sure. I did not include it because personally, I did not see cases where I would have to specify the radius rather than the angle.

Actually the angle is an absolute parameter, that will stay the same, even if the shape changes.

In contrast, the radius depends on the total length of the shape along the bending direction. If you change the shape, the radius will change. Somehow, input of the radius is a one-time specification to compute the equivaleent angle for the given shape.

jonorman

Yes, In example: We are buliding a big tank, 30 meters in diameter. This is made of rolled plates. I don`t allways know the length of the plate, but i know the diameter of the tank, so it would be easy to just punch in that number.

fredo6

Ok. This is not complex to add in FredoBend, both for the Circular tool and the Dome tool.

However, there is question of the precedence of the angle versus the radius, since they are both related by a formula which also includes the length of the original shape along the bending direction.

1) Should the angle always prevail? that is, when you specify a radius, it calculates the angle and keep the angle as the main parameter. So, entering a radius is just a transient way to specify the angle.

2) or should the input mode be remembered? that is, if you specify a radius, FredoBend remembers that you specified a radius and will keep your radius value and adjust the angle dynamically, should the original shape change. Same if you specify an angle, it remembers that you specified than angle and will adjust the radius accordingly.

I also have to find a way to specify the radius in the VCB. Currently, a simple float value is for the angle. So, I'll probably set the convention for radius to be a flaot followed by a 'r' (ex: 3.5r, means 3.5 in current model unit), or a float with unit specification (ex: 3.5m or 3.5').

panixia

@fredo6 said:

there is question of the precedence

I guess option 2 is the correct one.

@fredo6 said:

I also have to find a way to specify the radius in the VCB

I guess r3,5 should be model uinits
And r3,5 plus units should set an arbitrary unit (different from the default model unit)

If you put the "r" BEFORE the number I guess that you can safely assume that it will be radius based.
If there's no "r" in front, then the number specify the angle.

If you put it after the number how do you specify the arbitrary unit?
In your example should be something like 3,5rcm (wich is weird compared to r3.5cm in my opinion).

jonorman

Opjtion 2 sounds good.

fredo6

For information, you CANNOT put 'r' in front of the number. If you type 'r' as first character, then Sketchup will switch to whatever command has a shortcut 'r'.

The distinction between radius, angle and number of segments is based on whether a letter follows the number:

if no character or 'd', this is an angle
if 's', this is a number of segments
if 'r' this is a radius
if something else that can be interpreted as a unit (', ", m, cm, mm, etc...), then it is also a radius with specified units
otherwise, it is ignored

Note that in the case of the Dome tool, you can add a digit 1 or 2 after, to specify whether this relates to the first or second curve.

33s2 will set 33 segments for the second curve
45.3d2 will set the angle to 45.3 degrees for the second curve
so, 35.6r2 will set the radius to 35.6 model unit for the second curve
and 35.6m2 will set the radius to 35.6m for the second curve

To finish with the VCB convention, if you type 2 values that are of the same categories, they apply to the curve1 and then the curve2. For instance: '33.4 45.6' will set the angles to 33.4 deg. for curve1 and 45.6 deg. for curve 2.

panixia

@fredo6 said:

For information, you CANNOT put 'r' in front of the number. If you type 'r' as first character, then Sketchup will switch to whatever command has a shortcut 'r'.

Doh, that's right!