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Vector Fields on Grids and Surfaces

Vector fields may be defined on planar grids or curved surfaces. They are always associated with a point set, e.g. the vertices of a surface, such each surface vertex is the base point of a single vector of the vector field. Different visualization methods allow to display vector fields as a collection of arrows, as integral curves, or as LIC images (Line Integral Convolution).

The centers of the potential are the marked surfaces of the underlying grid. Keep pressing key 'm' while dragging a small rectangle to mark vertices inside the rectangle as additional centers. Pressing 'u' allows to deselect vertices. Keep pressing 'p' and continuously drag a single center.

Vectorfield Demo

View source code: PaVectorField.java of applet, PjVectorField.java of project, PjVectorField_IP.java of info panel.