Framework for automatic generation of facades on free-form surfaces
Framework for automatic generation of facades on free-form surfaces
复制标题
在自由曲面上自动生成立面的框架
DOI：
10.1016/j.foar.2017.04.003
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
K. Shimada
中科院分区：
文献类型：
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作者：
Diego Andrade;Mika Harada;K. Shimada
新的设计工具已经产生了越来越多的兴趣，提出复杂的几何形状和图案。在不增加施工成本和时间的情况下，需要形成立面的弯曲几何形状，这是任何项目最复杂的设计挑战之一。在本文中，我们提出并展示了一个新的计算框架，通过面板和蜂窝结构的覆层，在立面顶部创建图案。该工具描述了一个给定的基础模型上的区域，特别是处理的位置，大小和一般几何特征的表面上的这种模型的方向。用户输入表明期望的用户对面板的意图的曲线和对应于黎曼度量张量场的初始边界条件的一组种子特征。该系统通过在整个域上求解Laplace-Beltrami偏微分方程来插值由输入特征和输入曲线定义的张量。我们展示了一个快速的聚类和搜索操作，正确的面板利用率的基础上的大小量化为设计变量，并通过Voronoi分割实现。我们提出了蜂窝结构，可以从基本的网格生产的另一种选择立面创作和构思检索。该系统连接到商业CAD软件包的几何建模内核;该系统通过其编程接口调用使用来自核心几何引擎的布尔运算将特征放置在基础模型外观的顶部。有了这个计算工具，数千个复合板可以在几分钟内可视化和开发。
New design tools have created a growing interest for presenting complex geometries and patterns. The need to form curved geometries of facades, without incurring high construction costs and time increases, presents one of the most complex design challenges for any project. In this paper, we present and demonstrate a new computational framework for the creation of patterns on top of facades, via cladding of panels and honeycomb structures. The tool describes a given region on a base model; dealing particularly with location, size and orientation of general geometric features on the surface of such model. The user inputs curves that manifest the desired user׳s intention for the panels and a set of seed features that correspond to the initial boundary conditions of a Riemannian metric tensor field. The system interpolates the tensors defined by input features and input curves by solving a Laplace-Beltrami partial differential equation over the entire domain. We show a fast clustering and search operations for correct panel utilization based on size quantization as design variable and implemented via Voronoi segmentation. We present honeycomb structures that can be retrieved from the fundamental mesh producing another option for facade creation and ideation. The system connects to a geometric modeling kernel of a commercial CAD package; the system places features on top of the base model facade using boolean operations from the core geometric engine via its programming interface calls. With this computational tool, thousands of clad panels can be visualized and developed within minutes.