The GrafPort defined a coordinate system. The most obvious on-screen "object" corresponding to a GrafPort was a window, but the entire desktop view could be a GrafPort, and off-screen ports could also exist. This was a logical drawing area where graphics could be drawn. QuickDraw defined a key data structure, the graphics port, or GrafPort. A raster system requires much less processing power however, and was the prevailing paradigm at the time that QuickDraw was developed. This is in contrast to vector graphics systems, where graphics primitives are defined in mathematical terms and rasterized as required to the display resolution. In addition, QuickDraw was a raster graphics system, which defines the pixel as its basic unit of graphical information. QuickDraw was grounded in the Apple Lisa's LisaGraf of the early 1980s and was designed to fit well with the Pascal-based interfaces and development environments of the early Apple systems. Applications using QuickDraw will still run under OS X 10.8 through macOS 10.13 however, the current versions of Xcode and the macOS SDK do not contain the header files to compile such programs. In Mac OS X v10.8, QuickDraw header support was removed from the operating system. In Mac OS X v10.5 applications using QuickDraw cannot make use of the added 64-bit support. In Mac OS X v10.4, QuickDraw has been officially deprecated. QuickDraw still existed as part of the libraries of Mac OS X, but had been largely superseded by the more modern Quartz graphics system. It was initially written by Bill Atkinson and Andy Hertzfeld. Java is a registered trademark of Oracle and/or its affiliates.QuickDraw is the 2D graphics library and associated Application Programming Interface (API) which is a core part of the classic Mac OS operating system. For details, see the Google Developers Site Policies. Title = Įxcept as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. 'label': ClassLabel(shape=(), dtype=int64, num_classes=345), The bitmap datasetĬontains these drawings converted from vector format into 28x28 grayscale images The Quick Draw Dataset is a collection of 50 million drawings across 345Ĭategories, contributed by players of the game Quick, Draw!. diabetic_retinopathy_detection (manual).
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