Search found 205 matches

Sun 29 Nov 2020, 21:57
Forum: Mathematics
Topic: Trigonometry - inverse...
Replies: 3
Views: 41

Re: Trigonometry - inverse...

Hi Ivan, Assuming you know y and x, then you can just use ATN: theta = ATN(y/x) This will give you the angle theta, in radians. If you do theta = DEG(ATN(y/x)) you will get it in degrees. You will note that you need to ensure x isn't 0, or you will get an error: you can check for this, and simply as...
Sat 28 Nov 2020, 18:21
Forum: Mathematics
Topic: Trigonometry - inverse...
Replies: 3
Views: 41

Re: Trigonometry - inverse...

Hi Ivan, not sure what you are looking for, and something like Wikipedia might be a good place to go, but, very simply: Consider a right-angled triangle with a horizontal baseline and a point on the left. The line sloping up from the bottom left to top right is the hypotenuse, which is the longest s...
Sat 28 Nov 2020, 17:53
Forum: Graphics and Games
Topic: Draggable handles
Replies: 2
Views: 24

Re: Draggable handles

I don't know of an automated way, but when I want drag boxes I use xor plotting, so that it's easy to move/resize them. I often want to drag a box round something, and this approach works very well for that. What you want is a bit different, but should be doable that way?
Mon 02 Nov 2020, 13:11
Forum: Miscellaneous
Replies: 6
Views: 360

Hi Richard,

I can confirm I've done a backup this morning.

Best wishes,

D
Sun 01 Nov 2020, 12:27
Forum: Miscellaneous
Replies: 6
Views: 360

Hi Richard, I'm still alive! Just drowning under a sea of coursework deadlines: COVID means exams have basically been replaced by several bits of coursework, so I have 7 to get done by the end of this week... As a conseqeunce, I don't often look at my "old" work email - you are better to use my new ...
Sat 17 Oct 2020, 09:35
Forum: In-browser edition of BBCSDL
Topic: Deploying programs in a browser
Replies: 3
Views: 411

Re: Deploying programs in a browser

I don't know what you mean!
Thu 15 Oct 2020, 08:03
Forum: In-browser edition of BBCSDL
Topic: Deploying programs in a browser
Replies: 3
Views: 411

Re: Deploying programs in a browser

Hi Richard,

I can take a hint! Forum created and topic moved. Let me know if the name doesn't suit...

D
Sat 26 Sep 2020, 09:01
Forum: Announcements
Topic: In-browser BBC BASIC for SDL 2.0
Replies: 56
Views: 5977

Re: In-browser BBC BASIC for SDL 2.0

Hi Richard,

I like it! I think it's much more friendly.

Best wishes,

D
Wed 16 Sep 2020, 09:32
Forum: Graphics and Games
Topic: Adding new graphic modes
Replies: 2
Views: 647

Re: Adding new graphic modes

Hi Repton, If you refer to the manual, you will see that BBC BASIC for Windows/SDL offers a multitude of pre-defined modes (34, I think!), as well as the ability to define your own using VDU 23,22. That should fulfil any needs you have. Note that even in modes with few colours, you can redefine the ...
Mon 07 Sep 2020, 13:10
Forum: BBC BASIC language
Topic: VDU 24?
Replies: 6
Views: 964

Re: VDU 24?

Hi Richard,

I didn't see a reply from you, and I certainly didn't delete it! There's no record of it in the moderator's log, so nor did anyone else, as far as I can see. Please feel free to re-post what was clearly a more accurate post than mine!

Best wishes,

D