Trapezoid XY Pad

[Evan Splash]

Hi there! Maybe someone has some ideas on how to make a trapezoid XY Pad?
I don't understand where to start. Drawing a trapezoid on the panel is not a problem, but how to make the indicator move exactly inside the drawn path?
Thanks in advance to everyone who responds! :)

[Oli Ullmann]

@Evan-Splash
Check the YouTube channel of @d-healey
He made a video about it. :-)

[Evan Splash]

@Oli-Ullmann Thanks, I'll definitely check it out!
I've already tried to find it in his videos, but I only found a rectangular XY pad. I'll try again :)

[d.healey]

@Evan-Splash said in Trapezoid XY Pad:

I only found a rectangular XY pad. I'll try again :)

That's all you'll find. But any shape is basically the same principle, you'll just need some fancy maths to make sure you remain in your shape's boundary.

[Evan Splash]

@d-healey I have a problem with math, I was hoping someone had a ready-made solution :)

[Lindon]

@Evan-Splash its pretty simple trigonometry - you just need to make sure the angle of your selected point(x) is within the angle of the bottom left and bottom right angles of your containing triangle:

Calculating an angle - Trigonometry - Edexcel - GCSE Maths Revision - Edexcel - BBC Bitesize

Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.

BBC Bitesize (www.bbc.co.uk)

[Evan Splash]

@Lindon Thanks for the advice! I'll start with that.