design ui ux unity user experience rendering tutorial animation alignment user interface principle pattern user development look dev pbr technical art tech art material shader graph shader editor pixi webgl canvas library framework javascript html5 browser web phaser game node-based particles games vfx graphic design effect visual soa aos memory cachemiss cache oop system component entity mike acton performance ecs dod data-oriented design character 1981 animator the illusion of life disney principles ollie johnston frank thomas annotated scrollbar jenifer tidwell designing interface hub and spoke global navigation navigation patterns pyramid modal window signposts proximity emphasize movement shape size texture color position static contrast mental model ockham gestalt razor rule of third miller occam behavior pareto golden ratio hick fitts layout usability interface experience prototype mockup wireframe mobile cross-platforms
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