Draw Library (for QB64PE v4.4 up)

[SMcNeill]

DRAW LIBRARY
============
A high‑performance 2D drawing library for QB64‑PE, providing fast routines for shapes, lines, images, text rendering, and geometric transformations.

FEATURES

• Fast filled shapes using scanline algorithms
  
• Thick lines, triangles, quads, and rounded rectangles
  
• Rotated and scaled image rendering
  
• Rotated and filled ellipses
  
• Arc and ring‑arc support
  
• Text‑to‑image rendering
  
• Clean naming conventions
  
• No dependencies beyond QB64‑PE
  

INSTALLATION

1. Place the library file in your project folder.
   
2. Add this line at the top of your program:
   '$INCLUDE:'Draw Library.QLB'
   
3. Compile and run.
   

COMMAND INDEX

CIRCLES & ELLIPSES

• Draw.Circle.Fill
  
• Draw.Circle.Thick
  
• Draw.Ellipse.Filled
  
• Draw.Ellipse.Arc.Fill
  
• Draw.Ellipse.Ring.Arc.Fill
  
• Draw.Ellipse.Tilt
  
• Draw.Ellipse.Tilt.Fill
  
• Draw.Ring.Arc.Fill
  
• Draw.Arc.Fill
  

LINES

• Draw.Line.Angle
  
• Draw.Line.Thick
  

TRIANGLES

• Draw.Triangle
  
• Draw.Triangle.Fill
  
• Draw.Triangle.Thick
  

QUADRILATERALS

• Draw.Quad
  
• Draw.Quad.Fill
  
• Draw.Quad.Thick
  

RECTANGLES

• Draw.Rect.Rounded
  
• Draw.Rect.Rounded.Fill
  

IMAGES & TEXT

• Draw.Image
  
• Draw.Text.To.Image&
  

Philosophy
The Draw Library is built around a few core principles:

• 1. Consistency
  • Every command follows the same naming pattern:
    
    Code: (Select All)

    Draw.<Shape>.<Variant>
• 2. Performance
  • Wherever possible, routines use:
    _MAPTRIANGLE for fast GPU‑accelerated fills
    _MEM for direct pixel writes
    Integer math for speed and stability
    
• 3. Compatibility
  • All routines work in:
    Any 32‑bit screen mode
    Any resolution
    Any aspect ratio
    
• 4. Simplicity
  • The API is designed to be intuitive:
    No global state
    No hidden dependencies
    No required initialization
    

EXAMPLE

Code: (Select All)

'$INCLUDE:'Draw Library.QLB'



SCREEN _NEWIMAGE(800, 600, 32)



Draw.Circle.Fill 400, 300, 100, _RGB32(255, 140, 0)



img& = _LOADIMAGE("ship.png", 32)

Draw.Image img&, 400, 300, 1, 1, 45, 0

LICENSE

This library is free to use, modify, and distribute in any QB64PE project.
Attribution is appreciated but not required.

AUTHOR

Created by Steve, with a focus on clarity, performance, and developer‑friendly design.