Development of three-dimensional modeling system simulating balloon art for children education

为了支持儿童在虚拟空间中学习三维物体建模，开发了模拟气球艺术的建模软件。在这个系统中，孩子们可以通过扭曲，弯曲和拧一个细长的气球来制作各种形状。每个建模功能都显示有一个大图标，显示功能的效果。每个函数都有一个原始的声音。声音是用来识别功能和娱乐儿童的，评价儿童所做的形状，并引导他们形成良好的形状的机制是必要的，将该系统用于造型教育。然后，我们添加了评估模块。该模块显示箭头，其指示由孩子形成的形状与其参考形状之间的差异。可以按照箭头的方向来细化形状。我们还添加了动画模块，它可以创建孩子们所做的形状的运动。根据与参考形状的长度差，通过修改存储在系统中的查尔兹作品的原始运动来生成对应于该作品的运动。可以将多个动作分配给一个形状，并且通过形状的分数选择其中一个动作。通过试用实验，证实了儿童可以在五分钟内从简短的解释和几个插图中毫无困难地理解系统的用法。动画片逗乐了孩子们。据观察，孩子们改变了他们的形状很多次，以查看动画。但是，有些孩子从最初的造型做一遍又一遍时，很难回到以前的造型。然后，我们增加了撤消/重做功能，使建模工作返回到以前的任何时间，这些改进大大提高了方便性。

Modeling software simulating balloon art was developed in order to support children learning three-dimensional object modeling in virtual space. In this system, children can make various shapes by twisting, bending, and screwing a long and slender balloon. Each modeling function is displayed with a large icon which shows effect of the function. Each function has an original sound. The sound is used to identify the function and amuse children.The mechanism evaluating the shapes made by children and leading them to good shapes is necessary to use the system to modeling education. Then, we added evaluation module. The module displays the arrows which indicate differences between the shape made by the child and its reference shape. It is possible to refine the shape, by following the arrows. Score of the shape is also displayed.We also added the animation module, which creates motions of the shapes made by children. <A motion corresponding to a childs work is generated by modifying its original motion stored in the system, according to the difference of length from the reference shape. Several motions can be assigned to one shape, and one of the motions is selected by the score of the shape.By the trial experiment, it was confirmed that children can understand the usage of the system from short explanation and several illustrations in five minutes without difficulty. The animation amused children. It was observed that children changed their shapes many times in order to view the animation. However, some children do the modeling over again from the initial shape when it is difficult to return, the shape to the former. Then, we added the undo/redo function to return the modeling work to any time of the previous.Convenience has improved greatly by these improvements.