Java - Graphics2D - 图形渲染

g.setRenderingHints(mapH);

HashMap mapH = new HashMap();
mapH.put(RenderingHints.KEY_ALPHA_INTERPOLATION,  RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY); //alpha差值（着色)
mapH.put(RenderingHints.KEY_ANTIALIASING,  RenderingHints.VALUE_ANTIALIAS_ON);  //抗锯齿（抗锯齿总开关）
mapH.put(RenderingHints.KEY_TEXT_ANTIALIASING,   RenderingHints.VALUE_TEXT_ANTIALIAS_GASP );  //文字抗锯齿
mapH.put(RenderingHints.KEY_STROKE_CONTROL,  RenderingHints.VALUE_STROKE_PURE); // 笔划规范化(画线用)
mapH.put(RenderingHints.KEY_COLOR_RENDERING,  RenderingHints.VALUE_COLOR_RENDER_QUALITY); // 颜色规范化（渐变用）
mapH.put(RenderingHints.KEY_FRACTIONALMETRICS,  RenderingHints.VALUE_FRACTIONALMETRICS_ON ); //字体小数开关
mapH.put(RenderingHints.KEY_INTERPOLATION , RenderingHints.VALUE_INTERPOLATION_BICUBIC); //插值算法，缩放旋转用
mapH.put(RenderingHints.KEY_RENDERING,RenderingHints.VALUE_RENDER_QUALITY); //呈现质量开关
mapH.put(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE); //抖动形状

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