Min. and Max. modulo values?

AGS · 06 February 2014, 11:55

Hi, just a cool small question: What are the minimum and maximum values for the bitplane modulo?

hooverphonique · 06 February 2014, 12:02

they are signed 16 bit words, and any value stored there will be added.

AGS · 06 February 2014, 12:08

Oh, that's quite much! I am developing a bitplane-viewer and am going to add a slider to adjust the modulo. Now, that slider potvalue must be translated into a modulo and I won't use the full possible value as then already a little move of the slider knob adds or susbtracts too many. what would be a good min/max for the slider? so that practical use of the modulo in demos is supported?

Leffmann · 06 February 2014, 19:19

If you want to cover all cases then you would need a maximum in the thousands, but a range from 0 to 320 will cover most, if you consider both interleaved and non-interleaved bitplanes.

thomas · 06 February 2014, 19:24

Sure? A superhires bitmap with 256 colors and interleaved bitplanes would have a modulo of 1120.

Leffmann · 06 February 2014, 20:01

Yeah but that's exactly what I wrote, that you may need a modulo in the thousands to cover all and rare cases. I think the slider is only for convenience, so it would only have to cover the most common cases. (there's probably an edit-field as well)

AGS · 06 February 2014, 21:35

I dunno how I can separate the edit field from the slider because the field should show the scroller value and the scroller should visualize the field value.

AGS · 07 February 2014, 12:40

Beside the modulo slider I have a vertical scroller to scroll through the file or memory. That one has the file/memory size as MAX, the current offset as POT and one line of 40 bytes + modulo as BODY. In the other direction, I use the scroller POT as offset. When I klick under or above the knob, the 'picture' moves one line down or one line up. This is correct. But when I drag the scroller knob, the picture does not only move vertically but also horizontally. How can I make it so that when scrolling the scroller the pic also moves only vertically?

06 February 2014, 11:55	#1
AGS XoXo/Tasko Developer Join Date: Dec 2013 Location: Munich Age: 48 Posts: 450	Min. and Max. modulo values? Hi, just a cool small question: What are the minimum and maximum values for the bitplane modulo?

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06 February 2014, 12:02	#2
hooverphonique ex. demoscener "Bigmama" Join Date: Jun 2012 Location: Fyn / Denmark Posts: 1,635	they are signed 16 bit words, and any value stored there will be added.

06 February 2014, 12:08	#3
AGS XoXo/Tasko Developer Join Date: Dec 2013 Location: Munich Age: 48 Posts: 450	Oh, that's quite much! I am developing a bitplane-viewer and am going to add a slider to adjust the modulo. Now, that slider potvalue must be translated into a modulo and I won't use the full possible value as then already a little move of the slider knob adds or susbtracts too many. what would be a good min/max for the slider? so that practical use of the modulo in demos is supported?

06 February 2014, 19:19	#4
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	If you want to cover all cases then you would need a maximum in the thousands, but a range from 0 to 320 will cover most, if you consider both interleaved and non-interleaved bitplanes.

06 February 2014, 19:24	#5
thomas Registered User Join Date: Jan 2002 Location: Germany Posts: 7,021	Sure? A superhires bitmap with 256 colors and interleaved bitplanes would have a modulo of 1120.

06 February 2014, 20:01	#6
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	Yeah but that's exactly what I wrote, that you may need a modulo in the thousands to cover all and rare cases. I think the slider is only for convenience, so it would only have to cover the most common cases. (there's probably an edit-field as well)

06 February 2014, 21:35	#7
AGS XoXo/Tasko Developer Join Date: Dec 2013 Location: Munich Age: 48 Posts: 450	I dunno how I can separate the edit field from the slider because the field should show the scroller value and the scroller should visualize the field value.

07 February 2014, 12:40	#8
AGS XoXo/Tasko Developer Join Date: Dec 2013 Location: Munich Age: 48 Posts: 450	Beside the modulo slider I have a vertical scroller to scroll through the file or memory. That one has the file/memory size as MAX, the current offset as POT and one line of 40 bytes + modulo as BODY. In the other direction, I use the scroller POT as offset. When I klick under or above the knob, the 'picture' moves one line down or one line up. This is correct. But when I drag the scroller knob, the picture does not only move vertically but also horizontally. How can I make it so that when scrolling the scroller the pic also moves only vertically?

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