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• 1. [Article] Algorithm animation in a declarative visual programming language

  How might capabilities for algorithm animation be seamlessly integrated into a programming language that is both visual and declarative? Until now, visual programming language researchers have not attempted ...

  Citation × Citation Citation Abstract Copy Title: Algorithm animation in a declarative visual programming language Author: Burnett, Margaret, 1949-, Carlson, Paul M., Oregon State University. Dept. of Computer Science How might capabilities for algorithm animation be seamlessly integrated into a programming language that is both visual and declarative? Until now, visual programming language researchers have not attempted to answer that question, making the fruits of algorithm animation available only to users of textual progranming languages. Users of visual programming languages (VPLs) have been deprived of the unique semantic insights algorithm animation offers, insights that would foster the understanding and debugging of visual programs. We have answered the question by seamlessly integrating algorithm animation capabilities into Forms/3, a general-purpose, declarative VPL. Our results show that such a VPL can support algorithm animation without leaving the declarative, visual model, without adding new concepts to the language or how to program in it, and without deviating from the uniform representation established for the language. In addition, our research shows that the characteristics of declarative VPLs result in some interesting algorithm animation features not found in other systems. Title: Algorithm animation in a declarative visual programming language Author: Burnett, Margaret, 1949-, Carlson, Paul M., Oregon State University. Dept. of Computer Science How might capabilities for algorithm animation be seamlessly integrated into a programming language that is both visual and declarative? Until now, visual programming language researchers have not attempted to answer that question, making the fruits of algorithm animation available only to users of textual progranming languages. Users of visual programming languages (VPLs) have been deprived of the unique semantic insights algorithm animation offers, insights that would foster the understanding and debugging of visual programs. We have answered the question by seamlessly integrating algorithm animation capabilities into Forms/3, a general-purpose, declarative VPL. Our results show that such a VPL can support algorithm animation without leaving the declarative, visual model, without adding new concepts to the language or how to program in it, and without deviating from the uniform representation established for the language. In addition, our research shows that the characteristics of declarative VPLs result in some interesting algorithm animation features not found in other systems. Close

• 2. [Article] Fluid flow on interacting deformable surfaces

  Fluid simulation on interacting deformable surfaces is a challenging problem that has many applications. In this paper, we present a framework in which artistic as well as physically realistic flows can ...

  Citation × Citation Citation Abstract Copy Title: Fluid flow on interacting deformable surfaces Author: Oregon State University. Dept. of Computer Science, Zhang, Eugene, Neill, Patrick J., Metoyer, Ronald A., 1971- Fluid simulation on interacting deformable surfaces is a challenging problem that has many applications. In this paper, we present a framework in which artistic as well as physically realistic flows can be generated on surfaces during deformation and collision. Our simulation system provides comprehensive control over the motion and deformation of an object as well as the movement and density of the fluid on the surface. At the heart of our system is a numerical solver that allows viscous and incompressible flows to be directly generated on surfaces using concepts from differential geometry, such as geodesic polar maps and parallel transport. This solver is fast and stable even when the object undergoes deformation or collides with other surfaces. We also propose rules that allow deformation and collisions to impact fluid flows in a physically realistic manner. By combining these rules with a set of comprehensive design functionalities, we develop a system in which the user can specify shape deformation, collision, and fluid flow in a unified framework. We demonstrate the capability of our system with a number example scenarios. Title: Fluid flow on interacting deformable surfaces Author: Oregon State University. Dept. of Computer Science, Zhang, Eugene, Neill, Patrick J., Metoyer, Ronald A., 1971- Fluid simulation on interacting deformable surfaces is a challenging problem that has many applications. In this paper, we present a framework in which artistic as well as physically realistic flows can be generated on surfaces during deformation and collision. Our simulation system provides comprehensive control over the motion and deformation of an object as well as the movement and density of the fluid on the surface. At the heart of our system is a numerical solver that allows viscous and incompressible flows to be directly generated on surfaces using concepts from differential geometry, such as geodesic polar maps and parallel transport. This solver is fast and stable even when the object undergoes deformation or collides with other surfaces. We also propose rules that allow deformation and collisions to impact fluid flows in a physically realistic manner. By combining these rules with a set of comprehensive design functionalities, we develop a system in which the user can specify shape deformation, collision, and fluid flow in a unified framework. We demonstrate the capability of our system with a number example scenarios. Close