hayguen / offscreen_bitmap_draw

Offscreen Bitmap/Raster Drawing (C++) Library

Offscreen Bitmap Drawing C++ Header-Only Library

Origin

This is a fork of http://www.partow.net/downloads/bitmap.zip
an MIT licensed C++ Bitmap Library from Arash Partow.

See http://www.partow.net/programming/bitmap/index.html and the referenced documentation there:
https://www.partow.net/programming/bitmap/documentation/annotated.html

Purpose

Perform inlined in-memory drawing operations with normal CPU - not using GPU, which don't need library operations or function calls.

Thus, it's header-only.

Changes from Arash Partow's version

• splitted/organized single header into multiple headers in offscr_bmp_drw/ directory
• added (still) minimalistic cmake support
• moved all classes/functions into namespace OffScreenBitmapDraw
• added zingl_image_drawer and templates for setting or adding pixels - later one for building heatmaps
• other incompatible changes planned!

Related / Similar C++ Libraries

• Tools for offscreen bitmap drawing - with Adafruit GFX Library
  • https://github.com/leftCoast/LC_offscreen
  • https://github.com/adafruit/Adafruit-GFX-Library
• Simple C++ off screen raster graphics library
  • https://github.com/richmit/mraster
• Bresenham Code/Site of Alois Zingl
  • https://zingl.github.io/bresenham.html
  • https://github.com/zingl/Bresenham
• PNG loader encoder/decoder
  • https://github.com/lvandeve/lodepng

offscreen_bitmap_draw's Issues

copy and adapt zingl code

have a look at following code:

• https://zingl.github.io/bresenham.html
• https://github.com/zingl/Bresenham

integrate some of that algorithms, e.g. drawing thick or anti-aliased lines, and adapt for in-memory bitmaps

use/integrate libtranspose

see https://github.com/hayguen/libtranspose

for better cache efficiency (reduce cache misses), when drawing huge vectors (implicit x-axis, values for y-axis) with millions of values ..