我想將具有透明背景的更多PNG合併爲一張稍後會提供給客戶端的圖像。我如何在appengine中實現這個目標?看起來像API不起作用,因爲透明度不被尊重。這裏是我的代碼片段:如何將png與透明背景結合在appengine中?
ArrayList<Composite> comps = new ArrayList<Composite>();
comps.add(ImagesServiceFactory.makeComposite(getImageFromStaticFile("imgs/odontogram/dente_colore/dente_colore_11.png"), 0, 0, 1, Anchor.TOP_LEFT));
comps.add(ImagesServiceFactory.makeComposite(getImageFromStaticFile("imgs/odontogram/dente_colore/dente_colore_12.png"), 10, 0, 1, Anchor.TOP_LEFT));
long color = 0xFFFFFFFFL;
Image resImg = ImagesServiceFactory.getImagesService().composite(comps, 429, 189, color);
response.getOutputStream().write(resImg.getImageData());