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All visual items in Qt Declarative inherit from Item. Although Item has no visual appearance, it defines all the properties that are common across visual items - such as the x and y position, the widt...    阅读全文
posted @ 2011-08-04 14:18
katago
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Types of Animations 主要有以下几种动画: Value Source / Behavior When an animation is used as a value source or in a Behavior, the default target and property name to be animated can both be inferred.  Rectangl...    阅读全文
posted @ 2011-08-04 14:00
katago
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Fundamental laws of physics Gravity 重力 Friction 摩擦力 Collision response 碰撞 Forward kinematics Particle systems 粒子系统 Playing God http://search.china-pub.com/s/?key1=%uff08%u7f8e%uff09Andr%u00e9+LaMothe...    阅读全文
posted @ 2011-08-04 10:37
katago
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在虚拟战场中,有些诸如烟雾、火焰、雨雪等自然现象和不规则对象,它们不仅有复杂的逻辑结构,而且还会动态地发生变换,很难用传统的几何建模方式来表现。粒子系统(Particle System)是迄今为止计算机图形学中用于描述不规则对象最成熟的理论之一,也是视景仿真领域模拟自然现象和特殊效果的方法中视觉效果最好的一种。粒子系统的基本思想是,采用大量具有一定生命和属性的微小粒子图元作为基本元素来描述不规则对...    阅读全文
posted @ 2011-08-04 10:12
katago
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