draw-line
wayland/arduino-tvout/draw-line
Draw a line between two points.
draw-line
@/draw-line
Draw a line between two points.
DEV@/tvout-device
A tvout device.
X0number
The x coordinate of point 0.
Y0number
The y coordinate of point 0.
X1number
The x coordinate of point 1.
Y1number
The y coordinate of point 1.
COLORnumber
The color of the line. Options:
0 = black;
1 = white;
2 = invert.
UPDpulse
Update. Triggers draw line.
DONEpulse
Pulse on completion.
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 x0 = getValue<input_X0>(ctx);
uint8_t y0 = getValue<input_Y0>(ctx);
uint8_t x1 = getValue<input_X1>(ctx);
uint8_t y1 = getValue<input_Y1>(ctx);
char color = getValue<input_COLOR>(ctx);
tv->draw_line(x0, y0, x1, y1, color);
emitValue<output_DONE>(ctx, 1);
}