This demonstration shows the tool we have developed for hand-sketching user interfaces. Our motivation for developing this tool is to provide an environment where novice programmers can move freely along the design continuum from informal low-fidelity prototypes to completed formal designs. A low-cost digital whiteboard is used to provide a shared work space for Freeform. The tool is integrated...

We propose a new approach to easily creating 3D geometric models. A technique called interactive evolutionary computation (IEC) is introduced to accelerate user’s invention and inspiration of new shapes. The proposed IEC-based design system generates aesthetically pleasing shapes through the simulation of natural evolutionary processes. The user is responsible for specifying his/her subjective ...

Implicit surfaces have received increased attention in the design and animation of 3D objects, since they posses some useful advantages over the traditional parametric surfaces. However, interactive design of such surfaces generally suffers from the relatively slow display speed and lack of efficient control facilities. This paper experiments the combination of the implicit surface technique an...

This paper presents a method for interactive design by means of extending the PDE based approach for surface generation. The governing partial differential equation is generalized to arbitrary order allowing complex shapes to be designed as single patch PDE surfaces. Using this technique a designer has the flexibility of creating and manipulating the geometry of shape that satisfying an arbitra...

This paper presents a protein visualization system called BioBrowser, which provides high quality images at interactive frame rates for molecules of extreme size and complexity. This is achieved by a shift in the tessellation approach: triangle meshes are not produced a priori on a ’just-in-case’ basis. Instead, tessellation happens ’justin-time’ given a certain camera position, image size and ...

This paper presents a system for design and simulation of supporting tube structure. We model each freeform tube component as a swept surface, and employ boundary control and skeletal control to manipulate its cross-sections and its embedding respectively. With the parametrization of the swept surface, a quadrilateral mesh consisting of nine-node general shell elements is automatically generate...

In this paper we describe concepts, which support the interactive exploration of subsurface information extracted from seismic datasets. Since in general subsurface information is of volumetric nature, appropriate visualization techniques are needed to provide an insight view to special regions of interest. Usually clipping planes or surface extraction techniques are used for this purpose. We w...

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We propose a new approach to easily creating 3D geometric models. A technique called interactive evolutionary computation (IEC) is introduced to accelerate user s invention and inspiration of new shapes. The proposed IEC-based design system generates aesthetically pleasing shapes through the simulation of natural evolutionary processes. The user only is required to specify his/her subjective pr...

All cells, inc luding h u m a n hemopoietic cells and lines derived from them, possess numerous surface proteins. In most h u m a n leukocytes and lymphoid cell lines several dozen proteins can be detected in membrane preparations, but so far only those proteins encoded by the various HLA loci have been extensively characterized. Vir tual ly noth ing is known about the great majori ty of lympho...