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What, more editing? I'll get it write, eventually!
Pete 
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(04-05-2024, 02:23 AM)Pete Wrote: What, more editing? I'll get it write, eventually!
Pete
Of curse you will; Pete. Have you noticed to, another fing peeple offen get rong is pucturation.
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04-05-2024, 02:36 AM
(This post was last modified: 04-05-2024, 02:36 AM by Pete.)
Well house about now, varmint!
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I'm adding the DRAW statement to Lesson 5 in the tutorial. I'm currently writing a few example programs to go along with it. This is the first example I made and shows how to use _RGB color to change line colors.
Code: (Select All) ' Hypno.BAS (you are getting very sleepy)
'
' DRAW statement demo
' by Terry Ritchie 04/05/24
'
DIM angle AS INTEGER ' pen angle
DIM length AS INTEGER ' line length
DIM count AS INTEGER ' line counter
DIM Gray AS INTEGER ' gray color level
DIM Direction AS INTEGER ' gray level direction
SCREEN _NEWIMAGE(800, 600, 32) ' enter a graphics screen
Gray = 0 ' set gray color level
Direction = 1 ' set gray level direction
DO ' begin main program loop
_LIMIT 10 ' 10 times a second should be nice
angle = 0 ' reset pen angle
length = 1 ' reset line length
count = 0 ' reset line counter
DRAW "BM399,299" ' move pen to the center of screen
DO ' begin spiral draw loop
DRAW "C" + STR$(_RGB(Gray, Gray, Gray)) ' change gray level of line color
DRAW "TA" + STR$(angle) ' rotate pen
DRAW "R" + STR$(length) ' draw straight line to right at rotated angle
angle = angle + 15 ' increase angle of rotation
IF angle MOD 180 = 0 THEN length = length + 1 ' increase line length at top and bottom
IF angle = 360 THEN angle = 0 ' reset angle when needed
Gray = Gray + Direction ' increase/decrease gray color level
IF Gray = 255 OR Gray = 0 THEN Direction = -Direction ' reverse gray level direction
count = count + 1 ' increment line counter
LOOP UNTIL count = 1550 ' 1550 lines should do it
_DISPLAY ' update the screen with changes
LOOP UNTIL _KEYDOWN(27) ' leave when ESC pressed
SYSTEM ' return to the operating system
There are two ways to write error-free programs; only the third one works.
QB64 Tutorial
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04-05-2024, 07:11 PM
(This post was last modified: 04-05-2024, 07:11 PM by NakedApe.)
Gee, thanks, Terry. I've been staring at my screen in a daze for the last 20 minutes. Nice demo - cool, little program. 
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04-05-2024, 09:25 PM
(This post was last modified: 04-05-2024, 09:26 PM by TerryRitchie.)
(04-05-2024, 07:11 PM)NakedApe Wrote: Gee, thanks, Terry. I've been staring at my screen in a daze for the last 20 minutes. Nice demo - cool, little program. Yikes, it should have come with a warning! 
There are two ways to write error-free programs; only the third one works.
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Here's another one to stare at.
Code: (Select All) ' DrawBoxes.BAS
'
' DRAW example using paint feature
' by Terry Ritchie 04/05/24
' Using the paint feature in DRAW can be very taxing on the CPU.
' Change boxsize to 20 below and see the result.
CONST BOXSIZE = 100 ' side length of rotating squares
DIM Angle AS INTEGER ' pen rotation angle
DIM Gray AS INTEGER ' paint color
DIM Direction AS INTEGER ' paint color direction
DIM s AS STRING ' side length of square in string format
DIM s2 AS STRING ' 1/2 side length of square in string format
DIM Box AS STRING ' string used to draw a square
DIM White AS STRING ' color white in string format
DIM Black AS STRING ' color black in string format
SCREEN _NEWIMAGE(800, 600, 32) ' enter a graphics screen
White = STR$(_RGB(255, 255, 255)) ' create white string
Black = STR$(_RGB(0, 0, 0)) ' create black string
s = STR$(BOXSIZE) ' create side length string
s2 = STR$(BOXSIZE \ 2) ' create 1/2 side length string
Box = "D" + s2 + "L" + s + "U" + s + "R" + s + "D" + s2 ' create string to draw a square
Direction = 1 ' set paint color direction
Gray = 0 ' set paint color
DO ' begin main program loop
CLS ' clear the screen
_LIMIT 60 ' no faster than 60 FPS
FOR y = BOXSIZE \ 2 TO 600 - BOXSIZE \ 2 STEP BOXSIZE ' cycle square x center points
FOR x = BOXSIZE \ 2 TO 800 - BOXSIZE \ 2 STEP BOXSIZE ' cycle square y center points
DRAW "BM" + STR$(x) + "," + STR$(y) ' move pen to square center point
DRAW "TA" + STR$(Angle) ' rotate pen
DRAW "C" + Black ' make pen color black
DRAW "R" + s2 ' move pen to square border
DRAW "C" + White ' make pen color white
DRAW Box ' draw a square
DRAW "BM" + STR$(x) + "," + STR$(y) ' move pen back to center of square
DRAW "P" + STR$(_RGB(Gray, Gray, Gray)) + "," + White ' paint inside the square
NEXT x
NEXT y
_DISPLAY ' update the screen with changes
Gray = Gray + Direction ' increase/decrease gray color level
IF Gray = 255 OR Gray = 0 THEN Direction = -Direction ' reverse gray level direction
Angle = Angle + 1 ' increase pen angle
IF Angle = 360 THEN Angle = 0 ' reset angle when needed
LOOP UNTIL _KEYDOWN(27) ' leave when ESC key pressed
SYSTEM ' return to operating system
There are two ways to write error-free programs; only the third one works.
QB64 Tutorial
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(04-05-2024, 03:53 PM)TerryRitchie Wrote: I'm adding the DRAW statement to Lesson 5 in the tutorial. I'm currently writing a few example programs to go along with it. This is the first example I made and shows how to use _RGB color to change line colors.
Code: (Select All) ' Hypno.BAS (you are getting very sleepy)
'
' DRAW statement demo
' by Terry Ritchie 04/05/24
'
DIM angle AS INTEGER ' pen angle
DIM length AS INTEGER ' line length
DIM count AS INTEGER ' line counter
DIM Gray AS INTEGER ' gray color level
DIM Direction AS INTEGER ' gray level direction
SCREEN _NEWIMAGE(800, 600, 32) ' enter a graphics screen
Gray = 0 ' set gray color level
Direction = 1 ' set gray level direction
DO ' begin main program loop
_LIMIT 10 ' 10 times a second should be nice
angle = 0 ' reset pen angle
length = 1 ' reset line length
count = 0 ' reset line counter
DRAW "BM399,299" ' move pen to the center of screen
DO ' begin spiral draw loop
DRAW "C" + STR$(_RGB(Gray, Gray, Gray)) ' change gray level of line color
DRAW "TA" + STR$(angle) ' rotate pen
DRAW "R" + STR$(length) ' draw straight line to right at rotated angle
angle = angle + 15 ' increase angle of rotation
IF angle MOD 180 = 0 THEN length = length + 1 ' increase line length at top and bottom
IF angle = 360 THEN angle = 0 ' reset angle when needed
Gray = Gray + Direction ' increase/decrease gray color level
IF Gray = 255 OR Gray = 0 THEN Direction = -Direction ' reverse gray level direction
count = count + 1 ' increment line counter
LOOP UNTIL count = 1550 ' 1550 lines should do it
_DISPLAY ' update the screen with changes
LOOP UNTIL _KEYDOWN(27) ' leave when ESC pressed
SYSTEM ' return to the operating system
Wow, nice! But you're right about the "warning!
Yes, that makes things clearer for me. I think you need a simpler demo first though - maybe just a colured empty square or circle, then go on to fill it.
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(04-05-2024, 11:48 PM)PhilOfPerth Wrote: (04-05-2024, 03:53 PM)TerryRitchie Wrote: I'm adding the DRAW statement to Lesson 5 in the tutorial. I'm currently writing a few example programs to go along with it. This is the first example I made and shows how to use _RGB color to change line colors.
Code: (Select All) ' Hypno.BAS (you are getting very sleepy)
'
' DRAW statement demo
' by Terry Ritchie 04/05/24
'
DIM angle AS INTEGER ' pen angle
DIM length AS INTEGER ' line length
DIM count AS INTEGER ' line counter
DIM Gray AS INTEGER ' gray color level
DIM Direction AS INTEGER ' gray level direction
SCREEN _NEWIMAGE(800, 600, 32) ' enter a graphics screen
Gray = 0 ' set gray color level
Direction = 1 ' set gray level direction
DO ' begin main program loop
_LIMIT 10 ' 10 times a second should be nice
angle = 0 ' reset pen angle
length = 1 ' reset line length
count = 0 ' reset line counter
DRAW "BM399,299" ' move pen to the center of screen
DO ' begin spiral draw loop
DRAW "C" + STR$(_RGB(Gray, Gray, Gray)) ' change gray level of line color
DRAW "TA" + STR$(angle) ' rotate pen
DRAW "R" + STR$(length) ' draw straight line to right at rotated angle
angle = angle + 15 ' increase angle of rotation
IF angle MOD 180 = 0 THEN length = length + 1 ' increase line length at top and bottom
IF angle = 360 THEN angle = 0 ' reset angle when needed
Gray = Gray + Direction ' increase/decrease gray color level
IF Gray = 255 OR Gray = 0 THEN Direction = -Direction ' reverse gray level direction
count = count + 1 ' increment line counter
LOOP UNTIL count = 1550 ' 1550 lines should do it
_DISPLAY ' update the screen with changes
LOOP UNTIL _KEYDOWN(27) ' leave when ESC pressed
SYSTEM ' return to the operating system
Wow, nice! But you're right about the "warning!
Yes, that makes things clearer for me. I think you need a simpler demo first though - maybe just a colured empty square or circle, then go on to fill it. Yep, the examples will start out simple and work up towards these. I like to get the more difficult examples out of the way first.
There are two ways to write error-free programs; only the third one works.
QB64 Tutorial
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(04-06-2024, 01:29 AM)TerryRitchie Wrote: (04-05-2024, 11:48 PM)PhilOfPerth Wrote: (04-05-2024, 03:53 PM)TerryRitchie Wrote: I'm adding the DRAW statement to Lesson 5 in the tutorial. I'm currently writing a few example programs to go along with it. This is the first example I made and shows how to use _RGB color to change line colors.
Code: (Select All) ' Hypno.BAS (you are getting very sleepy)
'
' DRAW statement demo
' by Terry Ritchie 04/05/24
'
DIM angle AS INTEGER ' pen angle
DIM length AS INTEGER ' line length
DIM count AS INTEGER ' line counter
DIM Gray AS INTEGER ' gray color level
DIM Direction AS INTEGER ' gray level direction
SCREEN _NEWIMAGE(800, 600, 32) ' enter a graphics screen
Gray = 0 ' set gray color level
Direction = 1 ' set gray level direction
DO ' begin main program loop
_LIMIT 10 ' 10 times a second should be nice
angle = 0 ' reset pen angle
length = 1 ' reset line length
count = 0 ' reset line counter
DRAW "BM399,299" ' move pen to the center of screen
DO ' begin spiral draw loop
DRAW "C" + STR$(_RGB(Gray, Gray, Gray)) ' change gray level of line color
DRAW "TA" + STR$(angle) ' rotate pen
DRAW "R" + STR$(length) ' draw straight line to right at rotated angle
angle = angle + 15 ' increase angle of rotation
IF angle MOD 180 = 0 THEN length = length + 1 ' increase line length at top and bottom
IF angle = 360 THEN angle = 0 ' reset angle when needed
Gray = Gray + Direction ' increase/decrease gray color level
IF Gray = 255 OR Gray = 0 THEN Direction = -Direction ' reverse gray level direction
count = count + 1 ' increment line counter
LOOP UNTIL count = 1550 ' 1550 lines should do it
_DISPLAY ' update the screen with changes
LOOP UNTIL _KEYDOWN(27) ' leave when ESC pressed
SYSTEM ' return to the operating system
Wow, nice! But you're right about the "warning!
Yes, that makes things clearer for me. I think you need a simpler demo first though - maybe just a colured empty square or circle, then go on to fill it. Yep, the examples will start out simple and work up towards these. I like to get the more difficult examples out of the way first.
Go Terry!!!
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