eink-dairy/pico-ssd1306/shapeRenderer/readme.md

Shape Renderer Module

This module provides functions for drawing basic geometrical shapes with simple code

1. Importing

#include "pico-ssd1306/shapeRenderer/ShapeRenderer.h"

note that core library and hardware_i2c library's need to be imported to use this library so follow steps from section 1 of readme.md

2. Differences from core library

Calling functions from modules is different from core lib. You can't just do object.drawLine(... since modules don't actually extend the SSD1306 class. You need to provide module functions with a pointer to a display object. So the first argument of every module draw function is a pointer to a display.

To see this more clearly here is an example:

// Create a new display object
pico_ssd1306::SSD1306 display = pico_ssd1306::SSD1306(I2C_PORT, 0x3D, pico_ssd1306::Size::W128xH64);

// Draw a line from x: 0, y: 0 to x: 128, y: 64
// Notice how we first pass the address of display object to the function
pico_ssd1306::drawLine(&display, 0, 0, 128, 64);

All functions are documented here