examples/commodetto/outline/random-ellipses draws very small shapes.

[stc1988]

Build environment: macOS
Moddable SDK version: 　6.0.0
Target device: Moddable Two, M5stack, M5Stack core2

Description

Steps to Reproduce

1. Build and install the example app examples/commodetto/outline/random-ellipses

Other information

It seems that Math.random() is always returning very small values.

> Math.random() 
0.01670149760709645
> Math.random() 
0.020756102171902567
> Math.random() 
0.02375773713545821
> Math.random() 
0.0271738914370476
> Math.random() 
0.020485148769916302
> Math.random() 
0.011472429384354601
> Math.random() 
0.02121300809579273
> Math.random() 
0.01759265992268749
> Math.random() 
0.019775460245966787

[phoddie]

I think the problem is a missing "f".

#if ESP32
	#define c_rand() (0x7ffffff & esp_random())

should be

#if ESP32
	#define c_rand() (0x7fffffff & esp_random())

It would be nice if C supported _ in numbers like JavaScript so we could write 0x7fff_ffff. 😉

[stc1988]

Thank you for checking it right away.
Although there’s a bias in the area compared to the simulator, it is now displaying.

[phoddie]

Looks like the range of rand() is still attenuated, maybe to 0 to 0.5. RAND_MAX might also need to be adjusted. I'll look into that later. (Always great to see Moddable Display, even in a bug report!)

[phoddie]

Try replacing this mess...

#if ESP32
	#define C_RAND_MAX UINT32_MAX
#else
//	#define C_RAND_MAX RAND_MAX
	#define C_RAND_MAX (0xFFFFFFFF)
#endif

...with this...

#define C_RAND_MAX INT32_MAX

That fills the entire screen with random ellipses here.

[stc1988]

#define C_RAND_MAX INT32_MAX

This code works as I expedted. Thank you.

[phoddie]

Thanks for confirming. I'll commit that for our next release.