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Thread: Trying to reverse engineer this family

1. Trying to reverse engineer this family

The item that im most curious about is how they applied the triangle formula to the top of this family.

there are parameters hidden in the middle extrusion of the family i believe these are part of it along with the span parameter.

however in one formula they use a hypotenuse (doesn't that mean there is a right triangle somewhere or could this work for an isosceles triangle?)

Just wondering if my assumptions are correct?

2. The right triangle exists from the top RP (Eave Height) to the center of the frame. I think there are better ways of handling the formulas but it does work. I'm also not the best at trig

I also would have used reference lines instead of the Brace Length parameters. The geometry will take care of itself if constrained to the RL.

different strokes I guess

3. The constraints are going from the top of "Eave Height" to the peak based off half the width of "Span" Creating a right triangle from the center of the span to the opposite corner. His extrusion is constrained to the intersections of the reference planes at these points. Then the sweep is constrained to the edge of the extrusion. Not entirely sure why they needed the hypotenuse as a constraint. It will always be a right triangle so finding the angle of the slope and defining the height of the peak as a constraint would be the way I would of done it. To each there own.

a = Rise * Rise or (a²)
b = Run * Run or (b²)
c = sqrt(c) or (c²)

Pythagorean Theorem is (a²+b²=c²)

To find his Hypotenuse a simpler way would be to simply to put "sqrt(Rise ^ 2 + Run ^ 2)" in the Hypotenuse parameter and get rid of "a" "b" and "c"

Added my version of the family. I didn't re-construct the constraints though.

4. would you attached the model to more ref planes and not use hidden parameters

(i dont like hidden parameters always seems like asking for trouble when you go back to the family later)

5. Originally Posted by Darius
would you attached the model to more ref planes and not use hidden parameters

(i dont like hidden parameters always seems like asking for trouble when you go back to the family later)
I would not use hidden parameters. :thumbsups:

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