draw-line(wt-sprite)
wayland/wio-terminal-lcd/draw-line(wt-sprite)
Draw a line on a sprite.
draw-line(wt-sprite)
@/draw-line(wt-sprite)
Draw a line on a sprite.
Sprite@/wt-sprite
A wt-sprite object.
X0number
X coordinate of the start of the line.
Y0number
Y coordinate of the start of the line.
X1number
X coordinate of the end of the line.
Y1number
Y coordinate of the end of the line.
Colorxod/color/color
Line color.
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_eSprite sprite` class instance
auto spr = getValue<input_Sprite>(ctx);
XColor color24 = getValue<input_Color>(ctx);
uint16_t color16 = ((color24.r & 0xF8) << 8) | ((color24.g & 0xFC) << 3) | (color24.b >> 3);
spr -> drawLine(getValue<input_X0>(ctx),
getValue<input_Y0>(ctx),
getValue<input_X1>(ctx),
getValue<input_Y1>(ctx),
color16);
emitValue<output_Done>(ctx, 1);
}
}