Full Version: Lots of unkown

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re: crv.evaluateCurvature, here is some test code. Make a curve, select it and then push the Tab key and paste this in to the XYZ input control:

var crv = moi.geometryDatabase.getSelectedObjects().getCurves().item(0);
var pt = crv.evaluatePoint( crv.domainMin );
var K = crv.evaluateCurvature( crv.domainMin );
var f = moi.command.createFactory( 'line' );
f.setInput( 0, pt );
f.setInput( 1, moi.vectorMath.add( pt, K ) );
f.commit();

That will make a line showing the curvature vector. The radius of curvature is 1 / length of that line.

Curvature vectors are generally scaled up by quite a bit when used for visualization purposes. They tend to be small in their direct form.

- Michael

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thanks ! that's what i've needed !

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how can I get toplevel from a selection (ex:face or edge to object)

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Hi Tudor,

re:
> how can I get toplevel from a selection (ex:face or edge to object)

var toplevel = subobj.getTopLevelParent();

- Michael

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Hi Michael !
is it possible to attach moi-html to chrome to have futures like object explorer/building html ?
or other ways to debug

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Hi Tudor,

re:
> Hi Michael !
> is it possible to attach moi-html to chrome to have futures like object explorer/building html ?
> or other ways to debug

No, not currently. In the future I want to have a script debugger in MoI, it will involve a lot of work to make that happen though.

- Michael

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Message 8665.191 was deleted

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Hi Michael !
I think this should rise an error
createPoint(moi.vectorMath.add(obj.getStartPt(), scaleVector(obj.evaluateTangent(obj.domainMin), -1))).commit() - correct state
createPoint(moi.vectorMath.add(obj.getStartPt(), scaleVector(obj.evaluateTangent(obj.domainMin)),-1)).commit() - should rise -> it creates an null point

function scaleVector(v, factor) ... return moi.vectorMath.createPoint(x,y,z)

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Hi Michael !
I'm working a script & I wanna optimize it ! it uses a lot of moi.vectorMath.add()
wanna ask what's the math behind that function ? mb will improve runtime (not to call internals todo math operations )

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Hi Tudor,

re:
> it uses a lot of moi.vectorMath.add()
> wanna ask what's the math behind that function ?

Like this:

var PtA, PtB, Result;

<......>

Result.x = PtA.x + PtB.x;
Result.y = PtA.y + PtB.y;
Result.z = PtA.z + PtB.z;


- Michael

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scripts for edge selection :

I wanted ~ growLoop similar to Subd, with v4 it became possible
works only for 1 selected object -> possible multiple edge selection

_GrowSelectionTangecy - expands only once
_ExpandSelectionTangecy - expands full selection

testing files are on moi_objects.rar
I haven't done more optimization since ~ 140ms is good result on big_object test (started from 20s -> 2s -> 1.2s-> 0.140)

quick Notes:
factory.Update() + getCreatedObjects() - it's slow process - better avoid it
looping same object - debugging -> might have different selection order - idk why it's happening - have to place into java object
Ps: why getEndPt() != domainMax ?

Attachments:
moi_objects.rar
_ExpandSelectionTangecy.js
_GrowSelectionTangecy.js

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add point
D -> delete corners

Attachments:
AddPoint.js

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http://moi3d.com/forum/index.php?webtag=MOI&msg=8665.136
Shortcuts for manipulation:
Fillet; Inset; Shell ; Offset(Brep)

Numpad+ -> value + value/2
Shift+Numpad+ -> value + value/10
Numpad- -> value - value /3
Shift+Numpad- -> value + value/10
Numpad* -> value*2
Numpad/ -> value/2

//added
small adjustments
Ctrl+Shift+Numpad+ -> value +value/100
Ctrl+Shift+Numpad- -> value - value/100
r - reset distance to 0 -> to start new one

Attachments:
GetDistance.js

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Hi Michael
for offset - through point, I wanna store value for next op - have the same as previous - how shall I do it ? (temporary global save*)

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magic of offset ~ weird behavior

Attachments:
buggy_offset.3dm

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I've tested in other software to see if it's rly a problem !
Rhino Fails - buggy
DesignSpark Mechanical - buggy
Illustrator - it doest care about continuity
Fusion 360 - it maxed the continuity- when it breaks, will round corners

Image Attachments:
23123.jpg 

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Hi Tudor,

re:
> for offset - through point, I wanna store value for next op - have the same as previous - how
> shall I do it ? (temporary global save*)

There's moi.command.setOption() and moi.command.getOption() that can be used for that.

The setOption works like: moi.command.setOption( 'string_id', val );

getOption goes like this:
var val = moi.command.getOption( 'string_id' );

One thing to watch out for is that getOption() will throw an exception if there isn't anything saved with that string id before, so you need to use it in a try/catch block like this:

var Val = 5;
try {
Val = moi.command.getOption( 'string_id' );
}
catch(e) {}

- Michael

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Hi Tudor,

re:
> magic of offset ~ weird behavior

Offset has been tuned up quite a bit already for the next beta and it shouldn't make the weird excessive extensions anymore.

It will try to make a G2 continuous extension but it looks at how much the extension bends and once it is beyond a limit it switches to G1 line extensions:



- Michael

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thanks !

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rectangle round corner if forgot check button - applies instead of cancel entire op

Attachments:
GetRectRoundCorner.js

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