 a red circle centered at v1 = (10, 30) of radius 12. </span></div>
<div class="line"> </div>
<div class="line"><span class="comment">// method `Image::drawCircleAA(fVec2 center, float r, color_t color, float opacity)` takes floating point valued parameters for sub-pixel precision: </span></div>
<div class="line">im.drawCircleAA({50.0f, 60.0f} , 11.5f, <a class="code hl_variable" href="_color_8h.html#a3cf013ec1fa56751bb229035ef718aba">tgx::RGB32_Red</a>); <span class="comment">// draw a blue circle centered