Hello!

Something that is sometimes really annoying is the lack of an atan2 and an a²+b²=c² function. Would blocks like this be possible:

([ atan2] of (a) and (b) :: operators)
([ sqrt(a²+b²)] of (a) and (b) :: operators)

I know that you can build them, but it's annoying and less understandable.

This would require a new block with two inputs, and at that point it becomes unclear what functions to put in it.
Do we put every function and equation with two inputs?

No, you don't need

([abs] of (x) or (y) :: operators)

, do you?
Oops, I made a mistake. I mean sqrt(a²+b²).
And atan and atan2 are different things.

Something like

(constrain (value) (min) (max) :: operators)

would also be really useful for collision detection between circles and rectangles.

I dunno what “atan2” means, but I have a workaround for the bottom block:

(((a)*(a)) + ((b)*(b)))

HTML-Fan wrote:

Something like

(constrain (value) (min) (max) :: operators)

would also be really useful for collision detection between circles and rectangles.

Why can't you use

<touching [rectangle v] ?>

Seth_Zaw wrote:

I dunno what “atan2” means, but I have a workaround for the bottom block:

(((a)*(a)) + ((b)*(b)))

atan2 is something like point to x: () y: () and you need about 8 blocks below each other to build it, so it looks kinda ugly.
Yes, a workaround, but I want it to be on hand when I need it, I don't want to build it.

Seth_Zaw wrote:

HTML-Fan wrote:

Something like

(constrain (value) (min) (max) :: operators)

would also be really useful for collision detection between circles and rectangles.

Why can't you use

<touching [rectangle v] ?>

That works with sprites. But I code pen engines, because I don't like sprites and their collision detection.

HTML-Fan wrote:

Seth_Zaw wrote:

I dunno what “atan2” means, but I have a workaround for the bottom block:

(((a)*(a)) + ((b)*(b)))

atan2 is something like point to x: () y: () and you need about 8 blocks below each other to build it, so it looks kinda ugly.
Yes, a workaround, but I want it to be on hand when I need it, I don't want to build it.

Seth_Zaw wrote:

HTML-Fan wrote:

Something like

(constrain (value) (min) (max) :: operators)

would also be really useful for collision detection between circles and rectangles.

Why can't you use

<touching [rectangle v] ?>

That works with sprites. But I code pen engines, because I don't like sprites and their collision detection.

Too bad! You'll just have to use sprites, because constrains are really confusing to beginner Scratchers.

Seth_Zaw wrote:

Too bad! You'll just have to use sprites, because constrains are really confusing to beginner Scratchers.

I could use

set [result v] to [value]
if <[result] < [min]> then
set [result v] to [min]
end
if <[result] > [max]> then
set [result v] to [max]
end

but for a rectangle you have to do this twice and that makes the collision detection code really long.
And why is it confusing? It just keeps the value between a min and a max value.

Maybe those operators with multiple inputs could be included in

([ v] of (9) :: operators)

*bump*
This isn't confusing. It's more confusing to see the lack of such a function.