draw-ellipse(wt-lcd-device)
wayland/wio-terminal-lcd/draw-ellipse(wt-lcd-device)
Draw ellipse.
draw-ellipse(wt-lcd-device)
@/draw-ellipse(wt-lcd-device)
Draw ellipse.
DEV@/wt-lcd-device
A wt-lcd-device.
Xnumber
X coordinate of the origin.
Ynumber
Y coordinate of the origin.
RXnumber
Horizontal radius (pixels).
RYnumber
Vertical radius (pixels)
Colorxod/color/color
Color.
Fillboolean
True to fill ellipse with colour, False to draw outline only.
UPDpulse
Update.
Donepulse
Pulse on completion.
C++ implementation
#pragma XOD evaluate_on_pin disable
#pragma XOD evaluate_on_pin enable input_UPD
node {
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 `TFT_eSPI tft` class instance
auto tft = getValue<input_DEV>(ctx);
XColor color24 = getValue<input_Color>(ctx);
uint16_t color16 = ((color24.r & 0xF8) << 8) | ((color24.g & 0xFC) << 3) | (color24.b >> 3);
if (getValue<input_Fill>(ctx)) {
tft -> fillEllipse(getValue<input_X>(ctx), getValue<input_Y>(ctx), getValue<input_RX>(ctx), getValue<input_RY>(ctx), color16);
} else {
tft -> drawEllipse(getValue<input_X>(ctx), getValue<input_Y>(ctx), getValue<input_RX>(ctx), getValue<input_RY>(ctx), color16);
}
emitValue<output_Done>(ctx, 1);
}
}