CONTOUR GRADIENTS USING THREE-DIMENSIONAL MODELS

摘要

A method and systems of applying a contour gradient to a two-dimensional path are provided. A three-dimensional polygonal shell may be constructed from the two-dimensional path. Then the three-dimensional polygonal shell may be projected into two dimensions, resulting in a two-dimensional projected model, while saving values for a third dimension for each point in the two-dimensional projected model. Then a range of all values for the third dimension in the two-dimensional projected model is determined from the saved values. The range can then be mapped to a visual attribute. The two-dimensional projected model may be displayed using the mapped visual attribute.

主权项

1. A method for displaying a two-dimensional (2D) model of a path that defines a plurality of 2D points, the method comprising:
constructing a three-dimensional (3D) model based on the 2D path, wherein the 3D model includes a plurality of 3D points that each corresponds to one of the plurality of 2D points; constructing the 2D model based on the 3D model, wherein the 2D model associates a third-dimension value of each of the plurality of 3D points with the corresponding 2D point of the plurality of 2D points; determining a range of the third-dimension values; determining a visual attribute value for each of the plurality of 2D points based on the associated third-dimension value and a mapping function that is based on the range of third-dimension values; and causing to display the 2D model, wherein a visual attribute for each of the plurality of 2D points is based on the determined visual attribute value.