Titlebook: Beginning ARKit for iPhone and iPad; Augmented Reality Ap Wallace Wang Book 2018 Wallace Wang 2018 ARKit.Apple.iOS.iPad.iPhone.Augmented Re

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ADORN

Understanding Augmented Reality and ARKit,You may have heard of virtual reality (VR), but there’s a similar innovation that’s appearing on mobile devices like the iPhone and iPad that’s called augmented reality (AR). Although they may rely on similar technology, virtual reality and augmented reality offer vastly different uses in everyday life.

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Working with Shapes,In the previous chapter, we used a debugging option that allowed our augmented reality app to display the world origin, which showed the x-, y-, and z-axes based on the iOS device’s current location. Based on this world origin, we can place virtual objects in the augmented reality view by defining its x, y, and z coordinates.

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Positioning Objects,Virtual objects appear in an augmented reality view when you specify their x, y, and z coordinates. Such virtual objects remain fixed in place unless the user resets the world origin so they appear based on the new world origin’s location.

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Drawing on the Screen,You’ve already seen how you can draw common geometric shapes in augmented reality such as cylinders, boxes, pyramids, and spheres. You’ve also seen how you can draw custom geometric shapes by defining starting and end points. Creating and displaying virtual objects on the screen typically occurs in code.

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Adding Touch Gestures to Augmented Reality,Up until now, we’ve created augmented reality apps that display virtual objects on the screen. What gives augmented reality a greater sense of existing in front of your eyes is when you can interact with virtual objects.

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Physics on Virtual Objects,So far when we’ve added virtual objects to an augmented reality view, those virtual objects simply float in mid-air. While this might be suitable in some cases, in other cases you might want the virtual objects to behave more like real objects that can fall, bounce, and collide with one another.

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