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Canvas4_ESP32S3

ESP32-S3 optimized 4-bit canvas.

WIDTHCanvas width in pixels HEIGHTCanvas height in pixels

Namespace: enjin2

Header: include/enjin2/graphics/canvas_esp32s3.hpp

Public Methods​

Canvas4_ESP32S3()​

~Canvas4_ESP32S3()​

IRAM_ATTR void setPixel(int16_t x, int16_t y, Pixel4 color)​

Fast pixel setting using lookup tables.

xX coordinate yY coordinate colorPixel color

IRAM_ATTR Pixel4 getPixel(int16_t x, int16_t y) const​

Fast pixel reading using lookup tables.

xX coordinate yY coordinate Pixel color at the specified location

IRAM_ATTR void drawHorizontalLine(int16_t x1, int16_t x2, int16_t y, Pixel4 color)​

Vectorized horizontal line drawing.

x1Start X coordinate x2End X coordinate yY coordinate colorLine color

IRAM_ATTR void drawVerticalLine(int16_t x, int16_t y1, int16_t y2, Pixel4 color)​

Optimized vertical line drawing.

xX coordinate y1Start Y coordinate y2End Y coordinate colorLine color

IRAM_ATTR void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, Pixel4 color)​

Fast rectangle filling using vectorized horizontal lines.

xTop-left X coordinate yTop-left Y coordinate wWidth in pixels hHeight in pixels colorFill color

IRAM_ATTR void fillCircle(int16_t cx, int16_t cy, int16_t radius, Pixel4 color)​

Optimized circle filling using scanline algorithm.

cxCenter X coordinate cyCenter Y coordinate radiusCircle radius colorFill color

IRAM_ATTR void clear(Pixel4 color)​

Fast clear using optimized memory operations.

colorColor to fill canvas with

constuint8_t * getData() const​

Get raw data pointer for DMA transfers.

Pointer to pixel buffer

constexpr constexprsize_t getDataSize() const​

Get data size in bytes.

Data size

Private Methods​

IRAM_ATTR void setPixelDirect(uint8_t *row, int16_t x, uint8_t color)​

Direct pixel setting without bounds checking.