draw-pixel

wayland/arduino-tvout/draw-pixel

Set the color of a pixel.
draw-pixel
@/draw-pixel
Set the color of a pixel.
DEV@/tvout-device
A tvout device.
Xnumber
The x coordinate of the pixel.
Ynumber
The y coordinate of the pixel.
COLORnumber
The color of the pixel. Options: 0 = black; 1 = white; 2 = invert.
UPDpulse
Update. Triggers set pixel.
draw-pixel
DEV
X
Y
COLOR
UPD
DONE
DONEpulse
Pulse on completion.
To use the node in your project you should have the wayland/arduino-tvout library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.

C++ implementation

struct State {
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    // The node responds only if there is an input pulse
    if (!isInputDirty<input_UPD>(ctx))
        return;

    // Get a pointer to the `TVout` class instance
    auto tv = getValue<input_DEV>(ctx);
    uint8_t x = getValue<input_X>(ctx);
    uint8_t y = getValue<input_Y>(ctx);
    char color = getValue<input_COLOR>(ctx);

    tv->set_pixel(x, y, color);

    emitValue<output_DONE>(ctx, 1);
}