Vizier is a game world and sprite image management library. Vizier will offer two features:
1) image scrolling, zooming, and rotating transformation processes
2) 2D frustum culling.
Vizier facilitates image transformation by offering scrolling and zooming methods for the world image, and rotating methods for sprites. Vizier manages the images to ensure the scrolling and zooming is properly applied, relieving client code of responsibility for repositioning and scaling images. the vizier.
Sprite class keeps a cache of and manages all the various images that sprites generate for rotate operations.
Vizier provides 2D frustum culling for managing very large game worlds. a frustum loads only that portion of the world within the frustum. The frustum is centered on the visible screen and is typically the size of the screen or bigger.
Very large worlds challenge game design with memory and precision burdens; frustum culling eliminates these challenges. Vizier loads and evicts portions of the world from the frustum, using client supplied load and evict size parameters.
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