Gradients discusses axial and radial gradients and shows how to create and use CGShading and CGGradient objects. Shadows describes what shadows are, explains how they work, and shows how to paint with them. Patterns defines what a pattern and its parts are, tells how Quartz renders them, and shows how to create colored and stenciled patterns. Transforms describes the current transformation matrix and explains how to modify it, shows how to set up affine transforms, shows how to convert between user and device space, and provides background information on the mathematical operations that Quartz performs. Paths discusses the basic elements that make up paths, shows how to create and paint them, shows how to set up a clipping area, and explains how blend modes affect painting.Ĭolor and Color Spaces discusses color values and using alpha values for transparency, and it describes how to create a color space, set colors, create color objects, and set rendering intent. Graphics Contexts describes the kinds of drawing destinations and provides step-by-step instructions for creating all flavors of graphics contexts. Overview of Quartz 2D describes the page, drawing destinations, Quartz opaque data types, graphics states, coordinates, and memory management, and it takes a look at how Quartz works “under the hood.” This document is organized into the following chapters: Provide graphics editing capabilities in an application

This document is intended for developers who need to perform any of the following tasks: The Quartz 2D API is easy to use and provides access to powerful features such as transparency layers, path-based drawing, offscreen rendering, advanced color management, anti-aliased rendering, and PDF document creation, display, and parsing. Quartz 2D is resolution- and device-independent.

Quartz 2D provides low-level, lightweight 2D rendering with unmatched output fidelity regardless of display or printing device.

Core Graphics, also known as Quartz 2D, is an advanced, two-dimensional drawing engine available for iOS, tvOS and macOS application development.

Quartz for macos