* Add smooth arc drawing function
Update ESP8266 architecture reference
Add pushMaskedImage() to render 16bpp images with a 1bpp mask (used for transparent PNG images plus with sprites)
New functions added using drawArc:
drawSmoothArc
drawSmoothCircle
drawSmoothRoundRect
New sqrt_fraction() added to improve smooth graphics performance on processors without a FPU (e.g. RP2040)
Faster alphaBlend() function added which retains 6bpp for green
Rename swap_coord() to transpose()
* Update TFT_eSPI.cpp
* Add arc examples
Sprite class uses TFT_eSPI setBitmapColor - fn deleted
Small performance improvement to RP2040 SPI PIO
Typo corrections
Correct (unused) tft_Write_32 for STM32
Update HX8357D rotation code
Enable software reset for ILI9486
Add preliminary RM68120 support
The RP2040 processors can now drive 8 bit parallel and SPI displays using the PIO hardware.
The PIO offloads the processor by providing:
1. PIO managed setWindow sequence
2. PIO managed block and screen fill
Add ILI9225 support
Add viewport feature to Sprites
Rationalise common TFT_eSPI and Sprite functions and variables to use inherited functions width(), height(), rotation(), write(), pivot, cursor, swapBytes.
#740: To avoid ambiguity the pushSprite for writing a sprite to another sprite has been renamed pushToSprite
#704: Change to 18 bit colurs for SSD1963 with SPI interface
Remove outdated TFT_SPIFFS_Jpeg example
New function added:
bool created(void);
to check if sprite has been rotated. Example:
if ( !spr.created() ) Serial.println("Sprite has not been created");
TFT_eFEX also needs updating so Rotated_Sprite_3 example renders correctly.
pushImage for FLASH images updated so partly off-screen images are correctly rendered.
Read_User_Setup updated to be compatible with STM32 and new structure format.
Reduction in compiler warnings
Update Sprite destructor
Update version to 2.2.1
