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openVG-Slide10

Similar to OpenGL, OpenVG™ allows the user to specify matrices that transform objects in the environment. The API allows for a 3x3 matrix for images, which can be used to simulate perspective and 2.5 or pseudo-3D like interfaces. A 2x3 matrix is used for paths, which allows easy scaling, rotation, and translation of vector-based images. If a customer would like to put vector images in perspective, this can be done on the application side before sending down to the API. OpenVG also allows the user to specify a mask when rendering. This mask can be set by the user or built inside the API by rendering to a mask image. This allows for effects that would not be otherwise possible and performance savings for some complex images that don’t need to be fully displayed.

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