From: Per Bothner <per@bothner.com>
To: Arie van Wingerden <xapwing@gmail.com>, kawa@sourceware.org
Subject: Re: Need some help with Java - Kawa interop
Date: Fri, 02 Nov 2018 05:08:00 -0000 [thread overview]
Message-ID: <dbdb88ea-e0b5-078d-a822-0acb47066929@bothner.com> (raw)
In-Reply-To: <CADkALSGg=9RURk9-kG6qGPMUUx4fnJeQEdP0BQFX+4AJOX__yw@mail.gmail.com>
On 11/1/18 6:44 AM, Arie van Wingerden wrote:
> Trying to generate a random color for a shape in JavaFX.
> This (lines 7-9 are the binding of r, g and b):
>
>> (define (randomColor)
> (let (
> (rnd ((java.lang.Math:random))
> (r (java.util.Random:nextInt 255))
> (g (java.util.Random:nextInt 255))
> (b (java.util.Random:nextInt 255)))
> (Color:rgb r g b)))
nextInt is not static method, so you need an instance.
(define (randomColor)
(let* ((rnd (java.util.Random))
(r (rnd:nextInt 255))
(g (rnd:nextInt 255))
(b (rnd:nextInt 255)))
(java.awt.Color r g b)))
--
--Per Bothner
per@bothner.com http://per.bothner.com/
prev parent reply other threads:[~2018-11-02 5:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-01 13:45 Arie van Wingerden
2018-11-02 5:08 ` Per Bothner [this message]
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