ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

With the aim to achieve the quantified and visualized expression of crop growth, taking corn as an example, a simulation framework, which integrated parametric keyframe animation with the skeleton model was proposed. At first, a skeleton model for its topological structure was adopted, which was defined based on a precise geometric model. The dynamic creation of the parabolic curve of blade midrib integrated time variant was used to stimulate the elongation of leaf skeleton. With parametric keyframe technique, of which each keyframe parameters was acquired from the observed data or the output of corn growth model, the animation could be obtained by manual interaction. Experimental results showed that the proposed method could simulate the basic movements of corn growth visually with highly realistic rendering effects. It provides a simple and general dynamic process simulation for plant growth.