QB64 - Graphics & Sounds

Computer

PIXEL✨

• Smallest possible element of an image on the screen

• the computeer screen has hundreds of pixels

RESOLUTION

• Measured in terms of pixels vertically & horizontally on the screen

SCREEN command 💻

• All graphic commands can be used only if SCREEN is used

• Changes the resolution

• 2 types of modes:

  • Text mode

  • Graphic mode

• SCREEN 0 = only text

• SCREEN 1 - 13 = graphics & text

• Higher the number, higher the resolution

COLOR

Changes colour of screen & text

You must write the colour no.

• U can change foreground & background colour

  Color (foreground colour),(background colour)

PSET

• Highlights one single pixel at a specific point (coordinate)

• Works only if SCREEN is used

• Syntax

  PSET ([x coordinate],[y coordinate]), colour

LINE

➖

• Draws a line b/w 2 specific coordinates (points)

• SCREEN shd be used before using this

• U can draw squares/ rectangles with this

• B or BF shd be used for making a rectangle or square

• Syntax

  LINE (X1,Y1) - (X2,Y2),colour, B/BF

• B = outlined box

• BF = Filled box

CIRCLE ⚪

• Draws a circle of a specific radius at given coordinates

• Can be used only if SCREEN command is used

• Syntax

  CIRCLE (X,Y), radius ,colour

  Ex. Circle (30,60), 20, 4

Paint 🖌

• Used to paint a specific point

• U have to tell where it shd start, & where it shd stop (borders), otherwise it’ll cover the whole screen

• SCREEN shd be there to use paint

• Syntax

  PAINT ( X,Y), colour number, border colour

• Border color tells paint that it shdn’t paint further when it finds a pixel of that colour

BEEP

• Produces a beep sound for ½ of a second

• You just need to put beep wherever u want it

Sound

• Produces sound of a specific frequency for a specific duration from the speaker

• Only 1 sound is played at a time

• Syntax

  Sound , f, d

• f = Frequency (hertz)

• D = duration (in ticks)