line

C++ implementation

struct State {
    int x1,y1,x2,y2;
    bool black,set=false;
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) {
    auto display = getValue<input_DISPLAY>(ctx);
    auto state=getState(ctx);
    if(state->set){
        display->drawLine(state->x1,state->y1,state->x2,state->y2,state->black?WHITE:BLACK);
    }
    auto start=getValue<input_START>(ctx);
    auto end=getValue<input_END>(ctx);
    state->x1=start->x; state->y1=start->y;
    state->x2=end->x; state->y2=end->y;
    state->black=getValue<input_BLACK>(ctx);
    state->set=true;
    display->drawLine(state->x1,state->y1,state->x2,state->y2,state->black?BLACK:WHITE);
    display->display();
    emitValue<output_DONE>(ctx, 1);
}