void JoystickHistoryView::Draw(UIContext &dc) {
if (xAxis_ > -1 && yAxis_ > -1) {
const AtlasImage &image = dc.Draw()->GetAtlas()->images[I_CROSS];
float minRadius = std::min(bounds_.w, bounds_.h) * 0.5f - image.w;
int a = maxCount_ - (int)locations_.size();
for (auto iter = locations_.begin(); iter != locations_.end(); ++iter) {
float x = bounds_.centerX() + minRadius * iter->x;
float y = bounds_.centerY() - minRadius * iter->y;
float alpha = (float)a / maxCount_;
if (alpha < 0.0f) alpha = 0.0f;
dc.Draw()->DrawImage(I_CROSS, x, y, 0.8f, colorAlpha(0xFFFFFF, alpha), ALIGN_CENTER);
a++;
}
dc.End();
dc.BeginNoTex();
dc.Draw()->RectOutline(bounds_.centerX() - minRadius, bounds_.centerY() - minRadius, minRadius * 2, minRadius * 2, 0x80FFFFFF);
dc.End();
dc.Begin();
} else {
dc.DrawText("N/A", bounds_.centerX(), bounds_.centerY(), 0xFFFFFFFF, ALIGN_CENTER);
}
}
