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Martin H.

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Posted: 12:18pm 16 Oct 2024

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Animation using MAP Command

'HDMI only
MODE 2:CLS
Dim integer col(15):Restore colors:For f=1 To 15:Read col(f):Next
Dim integer mp(15,3)
Map reset:Map set
For CL=0 To 15
x=20*CL
Box x,0,20,128,,col(cl),col(cl)
For n=0 To 127 Step 2
If cl Then
For c=0 To 9 Step 2
Pixel x+c+10,n,col(cl+(CL<15))
Pixel x+c+11,n+1,col(cl+(CL<15))
Next
End If
If cl<15 Then
Circle 40,180,40-(cl*2),,,col(15-cl),Col(15-cl)
Circle 280,180,40-(cl*2),,,col(15-cl),Col(15-cl)
End If
Circle 160,180,40-(cl*2),,,col(cl),Col(cl)
Next
Next
Print @(96,130); "Mode 2 color cycling"
Do
For r=0 To 255 Step 8
For g=0 To 255 Step 8
For b=0 To 255 Step 8
For n=1 To 14
mp(n,0)=mp(n+1,0)
mp(n,1)=mp(n+1,1)
mp(n,2)=mp(n+1,2)
Map(n)=RGB(mp(n,0),mp(n,1),mp(n,2))
Next
Map(15)=RGB(r,g,b)
mp(15,0)=r:mp(15,1)=g:mp(15,2)=b
Map set
'Pause 10
FRAMEBUFFER wait
Next
Next
Next
Loop
colors:
'--Colorscheme accordung to Screencolors

Data RGB(BLUE),RGB(MYRTLE),RGB(COBALT) ,RGB(MIDGREEN),RGB(CERULEAN)
Data RGB(GREEN),RGB(CYAN),RGB(RED)
Data RGB(MAGENTA),RGB(RUST),RGB(FUCHSIA),RGB(BROWN),RGB(LILAC)
Data RGB(YELLOW),RGB(WHITE)

Edited 2024-10-17 01:12 by Martin H.

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stanleyella

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Posted: 03:46pm 16 Oct 2024

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impressive. is it 256 shades of grey?

Martin H.

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Posted: 04:55pm 16 Oct 2024

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no just Mode 2 ,so just 16 Colors at once ..
It just counts through all possible RGB values and change the “MAP” entry accordingly
Edited 2024-10-17 02:55 by Martin H.

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stanleyella

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Posted: 05:15pm 16 Oct 2024

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er , it was a joke , 50 shades of grey, never seen it.
mode 2 hdmi vs mode 2 vga. vga can run mode 2 faster, pico 2350 usb

matherp
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Posted: 05:31pm 16 Oct 2024

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Quote mode 2 hdmi vs mode 2 vga. vga can run mode 2 faster

VGA only has 16 fixed colours
HDMI mode 2 (or 3) has any 16 out of 32768 as in the animation
HDMI mode 4 can show all 32768 colours at the same time
HDMI mode 5 can show any 256 out of 32768 at the same time
Edited 2024-10-17 03:33 by matherp

stanleyella

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Posted: 06:18pm 16 Oct 2024

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matherp said

Quote mode 2 hdmi vs mode 2 vga. vga can run mode 2 faster

I think it's brill. using optimex 2350 hdmi.
testing existing code 2040 vga.
this vga example to test mode 2 hdmi and not the same, slower and sprite colours wrong.
try this code on vga and hdmi to see.

'vga 320x240 mode 2 sprites
mode 2
OPTION BASE 0 ' 0 based arrays
option DEFAULT INTEGER
OPTION EXPLICIT

dim dx(15),dy(15),spx(15),spy(15)
dim cannon(119),missile(15),oldspx(15),oldspy(15)
dim ptr,hiscore,spw,spht,temp,frame,frame_count,spdata,sp1
hiscore=0

'colour shortcuts
const WH =RGB(255, 255, 255) 'WHITE
const YE =RGB(255, 255, 0) 'YELLOW
const LI =RGB(255, 128, 255) 'LILAC
const BR =RGB(255, 128, 0) 'BROWN
const FU =RGB(255, 64, 255) 'FUCHSIA
const RU =RGB(255, 64, 0) 'RUST
const MA =RGB(255, 0, 255) 'MAGENTA
const RE =RGB(255, 0, 0) 'RED
const CY =RGB(0, 255, 255) 'CYAN
const GR =RGB(0, 255, 0) 'GREEN
const CE =RGB(0, 128, 255) 'CERULEAN
const MI =RGB(0, 128, 0) 'MIDGREEN
const CO =RGB(0, 64, 255) 'COBALT
const MY =RGB(0, 64, 0) 'MYRTLE
const BL =RGB(0, 0, 255) 'BLUE
const Bk =RGB(0, 0, 0) 'BLACK
const Gy =RGB(128, 128, 128) 'GREY
const Lg =RGB(210, 210, 210) 'LITEGREY
const Og =RGB(255, 165, 0) 'ORANGE
const PK =RGB(255, 160, 171) 'PINK
const Gd =RGB(255, 215, 0) 'GOLD
const SA =RGB(250, 128, 114) 'SALMON
const BE =RGB(245, 245, 220) 'BEIGE
'
cls
restore sprite1
udg1 'draws sprite1 on screen at 10,10
sprite READ 1,10,10,16,16 'reads sprite1 from screen to blit buffer1
restore sprite2
udg1 'draws sprite2 on screen at 10,10
sprite read 2,10,10,16,16 'reads sprite2 from screen to blit buffer2
'
for temp=0 to 15 'set up start sprite positions and directions

spx(temp)=(mm.hres /2)-32+int(rnd*64)
spy(temp)=(mm.vres /2)-20+int(rnd*40)
do :dx(temp)=int(rnd*5)-int(rnd*9):loop until dx(temp)<>0
do :dy(temp)=int(rnd*5)-int(rnd*9):loop until dy(temp)<>0

next temp
'
FRAMEBUFFER CREATE F

FRAMEBUFFER WRITE f

do 'demo moving sprite

cls RGB(black)
for temp=0 to 15
' if sprite_status(temp)=1 then 'is sprite active
if spx(temp)> mm.hres-32 then 'check right edge
dx(temp)= 0-dx(temp)
elseif spx(temp)<16 then 'check left edge
dx(temp)= 0-dx(temp)
end if
if spy(temp)>mm.vres-32 then 'check bottom edge
dy(temp)= 0-dy(temp)
elseif spy(temp)<16 then 'check top edge
dy(temp)= 0-dy(temp)
end if
'
spx(temp)=spx(temp)+dx(temp):spy(temp)=spy(temp)+dy(temp) 'get new position for draw
'
if frame=0 then'which sprite to draw
sprite WRITE 1,spx(temp),spy(temp) 'draw sprite1 at new position
else
sprite WRITE 2,spx(temp),spy(temp) 'draw sprite2 at new position
end if
next temp

FRAMEBUFFER COPY f,N
'
frame_count=frame_count+1 'when to change sprite
if frame_count=10 then
frame=not frame
frame_count=0
end if
pause 50
loop
'
sub udg1 'draws 16x16 data for blit to copy
for spht=0 to 15
for spw=0 to 15
read sp1
pixel spw+10,spht+10,sp1
next spw
next spht
end sub
'
sprite1:
data wh,bl,bl,bl,bl,bk,bk,bk,bk,bk,bk,bl,bl,bl,bl,wh
data bk,bl,re,re,re,bl,bl,bk,bk,bl,bl,re,re,re,bl,bk
data bk,bk,bk,bl,re,wh,bl,bk,bk,bl,wh,re,bl,bk,bk,bk
data bk,bk,bk,bl,re,wh,bl,bk,bk,bl,wh,re,bl,bk,bk,bk
data bk,bk,bk,bk,bl,wh,bl,bk,bk,bl,wh,bl,bk,bk,bk,bk
data bk,bk,bk,bk,bk,bl,bl,bk,bk,bl,bl,bk,bk,bk,bk,bk
data bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk
data bk,bk,bk,bk,ye,ye,ye,bk,bk,ye,ye,ye,bk,bk,bk,bk
data bk,bk,bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk,bk,bk
data bk,ye,ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye,ye,bk
data bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk
data ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bl,ye
data ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye
data ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye
data bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk
data bk,bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk,bk
sprite2:
data bl,bl,bl,bl,bl,bk,bk,bk,bk,bk,bk,bl,bl,bl,bl,bl
data bk,bl,re,re,re,bl,bl,bk,bk,bl,bl,re,re,re,bl,bk
data bk,bk,bl,wh,wh,re,bl,bk,bk,bl,re,wh,wh,bl,bk,bk
data bk,bk,bk,bl,re,wh,bl,bk,bk,bl,wh,re,bl,bk,bk,bk
data bk,bk,bk,bk,bl,wh,bl,bk,bk,bl,wh,bl,bk,bk,bk,bk
data bk,bk,bk,bk,bk,bl,bl,bk,bk,bl,bl,bk,bk,bk,bk,bk
data bk,bk,bk,bk,bk,bk,bk,ye,ye,bk,bk,bk,bk,bk,bk,bk
data bk,bk,bk,bk,bk,ye,ye,bk,bk,ye,ye,bk,bk,bk,bk,bk
data bk,bk,bk,bk,ye,ye,bk,bk,bk,bk,ye,ye,bk,bk,bk,bk
data bk,bk,bk,bk,ye,bk,bk,bk,bk,bk,bk,ye,bk,bk,bk,bk
data bk,bk,bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk,bk,bk
data bk,bk,ye,bk,bk,bk,bk,bk,bk,bk,bk,bk,bk,ye,bk,bk
data bk,bk,bk,ye,ye,bk,bk,bk,bk,bk,bk,ye,ye,bk,bk,bk
data bk,bk,bk,bk,ye,ye,bk,bk,bk,bk,ye,ye,bk,bk,bk,bk
data bk,bk,bk,bk,bk,ye,bk,bk,bk,bk,ye,bk,bk,bk,bk,bk
data bk,bk,bk,bk,bk,bk,ye,bk,bk,ye,bk,bk,bk,bk,bk,bk
'cannon
data bk,bk,bk,bk,bk,wh,wh,bk,bk,bk,bk,bk
data bk,bk,bk,bk,ye,cy,cy,ye,bk,bk,bk,bk
data bk,bk,bk,ye,cy,wh,wh,cy,ye,bk,bk,bk
data bk,bk,bk,ye,cy,cy,cy,cy,ye,bk,bk,bk
data bk,bk,ye,ye,cy,wh,wh,cy,ye,ye,bk,bk
data bk,bk,ye,cy,cy,cy,cy,cy,cy,ye,bk,bk
data bk,ye,bl,bl,bl,re,re,bl,bl,bl,ye,bk
data ye,ye,bl,bl,bl,re,re,bl,bl,bl,ye,ye
data bk,bk,ye,re,re,re,re,re,re,ye,bk,bk
data bk,bk,bk,ye,fu,fu,fu,fu,ye,bk,bk,bk
'missile
data wh,wh,re,re,ye,ye,wh,wh,wh,wh,ye,ye,re,re,wh,wh

Martin H.

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Posts: 1113

Posted: 08:01pm 16 Oct 2024

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Stan,
Since the values of the colors are hardwired on PicomiteVGA, it is of course not possible to create other colors via software.
In my setups I don't have much difference with the RGB 121 colors between Micomite VGA and DVI/HDMI.
The VGA colors can vary a little depending on the setup, as the resistors also have a tolerance and the AD-Converter in monitors also can “interpret” this differently.
DVI/HDMI send the color values digitally to the monitor, which then displays the colors. Here, of course, we have the option of adding more simultaneous colors, but this would mean that much more Screenmemory would be required for the image.
The generation via the MAP command is a compromise, similar to the Atari ST LOW-RES mode. No extra memory is required for the screen, but the data in there are only pointers to a color palette. Here you have the choice of many more colors (RGB555) but only 16 at a time.

My animation takes advantage of this by generating the image only once, but then changing the color palette again and again.
That wouldn't work on the PicomiteVGA.
Edited 2024-10-17 06:12 by Martin H.

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stanleyella

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Posted: 08:19pm 16 Oct 2024

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yes, I got vga is 16 colours, plenty.
In the case of VGA, the hardware is limited to the 16 colours defined by the resistor network.
In the case of HDMI each of the 16 colours can be mapped to any RGB555 colour. Use MAP GREYSCALE to have 16 shades of grey from black to white available.

I don't understand rgb555 colour... or the other rgb modes. vga seemed easier if the 16 colours can be defined with RGB(255, 64, 255)
https://www.thebackshed.com/forum/ViewTopic.php?TID=17173&P=8#225819

stanleyella

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Posted: 08:30pm 16 Oct 2024

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and map works vga

'map swithing demo
Dim integer cmap(13)

'Clear the screen
MODE 2
Map reset
CLS rgb(black)

'Set up colours in the array
cmap(1)=RGB(white)
cmap(2)=RGB(black)
cmap(3)=RGB(black)
cmap(4)=RGB(black)
cmap(5)=RGB(black)
cmap(6)=RGB(black)

cmap(7)=RGB(white)
cmap(8)=RGB(black)
cmap(9)=RGB(black)
cmap(10)=RGB(black)
cmap(11)=RGB(black)
cmap(12)=RGB(black)

' Do an initial update of the Colour map to set up our colours
domap

hline=76:hy=1:mch=1
line 0,75,319,75,,RGB(white)

do'draw horizontal lines
line 0,hline,319,hline,,map(mch)
inc mch:if mch=7 then mch=1
hline=hline+hy:hy=hy+0.6
loop until hline>240

xb=-149:xt=10:mch=7
do'draw vertical lines
line xb,239,xt,75,,map(mch)
inc mch:if mch=13 then mch=7
xb=xb+8:xt=xt+4
loop until xb>=479

'
lr=0
do
cmap(0)=cmap(6)
For i=5 To 0 Step -1' move horizontal lines
cmap(i+1)=cmap(i)
Next

if lr<40 then
cmap(6)=cmap(12)
For i=11 To 6 Step -1' move vertical lines
cmap(i+1)=cmap(i)
Next
else
cmap(12)=cmap(7)
For i=7 To 12' move vertical lines
cmap(i)=cmap(i+1)
Next
end if
inc lr:if lr>80 then lr=0

domap
pause 100
loop

end

Sub domap
Local integer i
Map (0)=RGB(black)
For i=1 To 12
Map (i)=cmap(i)
Next
Map set
End Sub

Mixtel90

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Posted: 08:38pm 16 Oct 2024

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RGBxyz refers to the number of bits available for each colour. So, for example, RGB222 would have 2 bits each for red, green and blue. That would give you off+3 brightness levels for each colour because 2 bits counts up 0-1-2-3.

RGB555 gives you 5 bits for each colour. That's off+31 brightness levels for each.

If you multiply the possibilities that gives you the total number of colours you can get:
RGB222 = 4 x 4 x 4 = 64 colours
RGB121 (our standard "VGA" Mode 2) = 2 x 4 x 2 = 16 colours
RGB555 = 32 x 32 x 32 = 32768 colours

Mick

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Preliminary MMBasic docs & my PCB designs

stanleyella

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Posted: 09:54pm 16 Oct 2024

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box don't fill.thought I had box fill sorted
mode 2
OPTION EXPLICIT
OPTION DEFAULT NONE

dim r%,g%,b%,count1%
mode 2:cls rgb(black)
for count1%=0 to 255
r%=count1%
box 100,100,60,60,1,rgb(r%,g%,b%),rgb(r%,g%,b%)
pause 100
next

stanleyella

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Posted: 10:10pm 16 Oct 2024

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hdmi on olimex. for beginner, nice. thanks to matherp for making possible and know there's other designs but £17 total ,postage and tax is good if you ever wired pico and sd card reader and audio filter and 3.5 jack and vga socket.
olimex is so easy to use 2350 and hdmi.
ready made alternatives? ebay?

phil99

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Posted: 10:20pm 16 Oct 2024

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Box fill works on PicoMiteVGA MMBasic RP2350A Edition V6.00.00RC8

Dim r%,g%,b%,count1%
MODE 2:CLS RGB(black)
For r%=0 To 255 Step 255
For g%=0 To 255 Step 64
For b%=0 To 255 Step 255
Box 100,100,60,60,1,RGB(r%,g%,b%),RGB(r%,g%,b%)
Pause 1000
Next
Next
Next

Edited 2024-10-17 08:30 by phil99

stanleyella

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Posted: 10:43pm 16 Oct 2024

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phil99 said Box fill works on PicoMiteVGA MMBasic RP2350A Edition V6.00.00RC8

Dim r%,g%,b%,count1%
MODE 2:CLS RGB(black)
For r%=0 To 255 Step 255
For g%=0 To 255 Step 64
For b%=0 To 255 Step 255
Box 100,100,60,60,1,RGB(r%,g%,b%),RGB(r%,g%,b%)
Pause 1000
Next
Next
Next

er? not hdmi
Edited 2024-10-17 08:55 by stanleyella

phil99

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Posted: 11:37pm 16 Oct 2024

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The point is the Box command is exactly the same as in your program and it works.
The box is filled with the same colour as its border.

JohnS
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Posted: 07:24am 17 Oct 2024

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stanleyella said

phil99 said Box fill works on PicoMiteVGA MMBasic RP2350A Edition V6.00.00RC8

Dim r%,g%,b%,count1%
MODE 2:CLS RGB(black)
For r%=0 To 255 Step 255
For g%=0 To 255 Step 64
For b%=0 To 255 Step 255
Box 100,100,60,60,1,RGB(r%,g%,b%),RGB(r%,g%,b%)
Pause 1000
Next
Next
Next

er? not hdmi

Are you saying that with the right firmware correctly installed that Box does not fill with HDMI?

I am (very) doubtful that you'd be right if so but be sure to report the version and Options with a short test program.

John

stanleyella

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Posted: 05:41pm 17 Oct 2024

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dim r%,g%,b%,count1%
mode 2:cls rgb(black)
for count1%=0 to 255
b%=count1%
text 0,0,str$(count1%)
box 100,100,60,60,1,rgb(white),rgb(r%,g%,b%)
pause 1000
next

red box at 128
green box at 64 and lite green box at 128
blue box at 128
same as vga mode2 but hdmi mode 2

phil99

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Posted: 08:57pm 17 Oct 2024

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That is how it is meant to be, except when g%=count% it is:-
dark green box at 64, mid green at 128 and light green box at 192, though the visible difference between mid and bright green is small. The reason for that is the colour scale is in linear steps but our vision is logarithmic.

It's 4 bit colour RGB121, Blue and Red are 1 bit each so any value up to 127 = &B0 = off and 128 to 255 = &B1 = on.
Green has 2 bits so:-
0 to 63 = &B00 = off
64 to 127 = &B01 = dark green
128 to 191 = &B10 = mid green
192 to 255 = &B11 = bright green

stanleyella

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Posted: 09:44pm 17 Oct 2024

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hdmi mode 5 is more like 3 blue,7 green,7 red same code.
getting the drift now.. I think. thanks, stan

phil99

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Posted: 11:09pm 17 Oct 2024

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If you want to know exactly how many colour steps there are in each mode this colour counter will do the job.

'A Display colour counter
MODE 2 '<-----------------Select the mode to test
CLS RGB(white) : Option Base 0
Dim String S$(2) = (" Blues", " Greens", " Reds")
Dim Integer a, b, c, d
For a = 0 To 2 'cycle through blue , green and red
b = 0 'initialize colour count
For c = 0 To 255 'set the brightness
d = c << (a * 8) 'make a 24bit colour
Line c, 1+a*9, c, 9+a*9, 1, d 'send it to a line
' Pixel c, 9+a*9, d 'send it to a pixel
If d = Pixel(c, 9+a*9) Then 'read that pixel back from the screen
Inc b 'if the colour is the same as the one sent count it
EndIf
Next
Print b; S$(a) 'show counted colours
Next
End

Edited 2024-10-18 10:59 by phil99

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